aboutsummaryrefslogtreecommitdiffstats
path: root/tools/perf/builtin-trace.c
blob: 6e47b19a1dcba086db731f945c2e4bcc20aea44f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
/*
 * builtin-trace.c
 *
 * Builtin 'trace' command:
 *
 * Display a continuously updated trace of any workload, CPU, specific PID,
 * system wide, etc.  Default format is loosely strace like, but any other
 * event may be specified using --event.
 *
 * Copyright (C) 2012, 2013, 2014, 2015 Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
 *
 * Initially based on the 'trace' prototype by Thomas Gleixner:
 *
 * http://lwn.net/Articles/415728/ ("Announcing a new utility: 'trace'")
 */

#include "util/record.h"
#include <traceevent/event-parse.h>
#include <api/fs/tracing_path.h>
#include <bpf/bpf.h>
#include "util/bpf_map.h"
#include "util/rlimit.h"
#include "builtin.h"
#include "util/cgroup.h"
#include "util/color.h"
#include "util/config.h"
#include "util/debug.h"
#include "util/dso.h"
#include "util/env.h"
#include "util/event.h"
#include "util/evsel.h"
#include "util/evsel_fprintf.h"
#include "util/synthetic-events.h"
#include "util/evlist.h"
#include "util/evswitch.h"
#include "util/mmap.h"
#include <subcmd/pager.h>
#include <subcmd/exec-cmd.h>
#include "util/machine.h"
#include "util/map.h"
#include "util/symbol.h"
#include "util/path.h"
#include "util/session.h"
#include "util/thread.h"
#include <subcmd/parse-options.h>
#include "util/strlist.h"
#include "util/intlist.h"
#include "util/thread_map.h"
#include "util/stat.h"
#include "util/tool.h"
#include "util/util.h"
#include "trace/beauty/beauty.h"
#include "trace-event.h"
#include "util/parse-events.h"
#include "util/bpf-loader.h"
#include "callchain.h"
#include "print_binary.h"
#include "string2.h"
#include "syscalltbl.h"
#include "rb_resort.h"
#include "../perf.h"

#include <errno.h>
#include <inttypes.h>
#include <poll.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <linux/err.h>
#include <linux/filter.h>
#include <linux/kernel.h>
#include <linux/random.h>
#include <linux/stringify.h>
#include <linux/time64.h>
#include <linux/zalloc.h>
#include <fcntl.h>
#include <sys/sysmacros.h>

#include <linux/ctype.h>
#include <perf/mmap.h>

#ifndef O_CLOEXEC
# define O_CLOEXEC		02000000
#endif

#ifndef F_LINUX_SPECIFIC_BASE
# define F_LINUX_SPECIFIC_BASE	1024
#endif

/*
 * strtoul: Go from a string to a value, i.e. for msr: MSR_FS_BASE to 0xc0000100
 */
struct syscall_arg_fmt {
	size_t	   (*scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
	bool	   (*strtoul)(char *bf, size_t size, struct syscall_arg *arg, u64 *val);
	unsigned long (*mask_val)(struct syscall_arg *arg, unsigned long val);
	void	   *parm;
	const char *name;
	u16	   nr_entries; // for arrays
	bool	   show_zero;
};

struct syscall_fmt {
	const char *name;
	const char *alias;
	struct {
		const char *sys_enter,
			   *sys_exit;
	}	   bpf_prog_name;
	struct syscall_arg_fmt arg[6];
	u8	   nr_args;
	bool	   errpid;
	bool	   timeout;
	bool	   hexret;
};

struct trace {
	struct perf_tool	tool;
	struct syscalltbl	*sctbl;
	struct {
		struct syscall  *table;
		struct bpf_map  *map;
		struct { // per syscall BPF_MAP_TYPE_PROG_ARRAY
			struct bpf_map  *sys_enter,
					*sys_exit;
		}		prog_array;
		struct {
			struct evsel *sys_enter,
					  *sys_exit,
					  *augmented;
		}		events;
		struct bpf_program *unaugmented_prog;
	} syscalls;
	struct {
		struct bpf_map *map;
	} dump;
	struct record_opts	opts;
	struct evlist	*evlist;
	struct machine		*host;
	struct thread		*current;
	struct bpf_object	*bpf_obj;
	struct cgroup		*cgroup;
	u64			base_time;
	FILE			*output;
	unsigned long		nr_events;
	unsigned long		nr_events_printed;
	unsigned long		max_events;
	struct evswitch		evswitch;
	struct strlist		*ev_qualifier;
	struct {
		size_t		nr;
		int		*entries;
	}			ev_qualifier_ids;
	struct {
		size_t		nr;
		pid_t		*entries;
		struct bpf_map  *map;
	}			filter_pids;
	double			duration_filter;
	double			runtime_ms;
	struct {
		u64		vfs_getname,
				proc_getname;
	} stats;
	unsigned int		max_stack;
	unsigned int		min_stack;
	int			raw_augmented_syscalls_args_size;
	bool			raw_augmented_syscalls;
	bool			fd_path_disabled;
	bool			sort_events;
	bool			not_ev_qualifier;
	bool			live;
	bool			full_time;
	bool			sched;
	bool			multiple_threads;
	bool			summary;
	bool			summary_only;
	bool			errno_summary;
	bool			failure_only;
	bool			show_comm;
	bool			print_sample;
	bool			show_tool_stats;
	bool			trace_syscalls;
	bool			libtraceevent_print;
	bool			kernel_syscallchains;
	s16			args_alignment;
	bool			show_tstamp;
	bool			show_duration;
	bool			show_zeros;
	bool			show_arg_names;
	bool			show_string_prefix;
	bool			force;
	bool			vfs_getname;
	int			trace_pgfaults;
	char			*perfconfig_events;
	struct {
		struct ordered_events	data;
		u64			last;
	} oe;
};

struct tp_field {
	int offset;
	union {
		u64 (*integer)(struct tp_field *field, struct perf_sample *sample);
		void *(*pointer)(struct tp_field *field, struct perf_sample *sample);
	};
};

#define TP_UINT_FIELD(bits) \
static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \
{ \
	u##bits value; \
	memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
	return value;  \
}

TP_UINT_FIELD(8);
TP_UINT_FIELD(16);
TP_UINT_FIELD(32);
TP_UINT_FIELD(64);

#define TP_UINT_FIELD__SWAPPED(bits) \
static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \
{ \
	u##bits value; \
	memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
	return bswap_##bits(value);\
}

TP_UINT_FIELD__SWAPPED(16);
TP_UINT_FIELD__SWAPPED(32);
TP_UINT_FIELD__SWAPPED(64);

static int __tp_field__init_uint(struct tp_field *field, int size, int offset, bool needs_swap)
{
	field->offset = offset;

	switch (size) {
	case 1:
		field->integer = tp_field__u8;
		break;
	case 2:
		field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16;
		break;
	case 4:
		field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32;
		break;
	case 8:
		field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64;
		break;
	default:
		return -1;
	}

	return 0;
}

static int tp_field__init_uint(struct tp_field *field, struct tep_format_field *format_field, bool needs_swap)
{
	return __tp_field__init_uint(field, format_field->size, format_field->offset, needs_swap);
}

static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample)
{
	return sample->raw_data + field->offset;
}

static int __tp_field__init_ptr(struct tp_field *field, int offset)
{
	field->offset = offset;
	field->pointer = tp_field__ptr;
	return 0;
}

static int tp_field__init_ptr(struct tp_field *field, struct tep_format_field *format_field)
{
	return __tp_field__init_ptr(field, format_field->offset);
}

struct syscall_tp {
	struct tp_field id;
	union {
		struct tp_field args, ret;
	};
};

/*
 * The evsel->priv as used by 'perf trace'
 * sc:	for raw_syscalls:sys_{enter,exit} and syscalls:sys_{enter,exit}_SYSCALLNAME
 * fmt: for all the other tracepoints
 */
struct evsel_trace {
	struct syscall_tp	sc;
	struct syscall_arg_fmt  *fmt;
};

static struct evsel_trace *evsel_trace__new(void)
{
	return zalloc(sizeof(struct evsel_trace));
}

static void evsel_trace__delete(struct evsel_trace *et)
{
	if (et == NULL)
		return;

	zfree(&et->fmt);
	free(et);
}

/*
 * Used with raw_syscalls:sys_{enter,exit} and with the
 * syscalls:sys_{enter,exit}_SYSCALL tracepoints
 */
static inline struct syscall_tp *__evsel__syscall_tp(struct evsel *evsel)
{
	struct evsel_trace *et = evsel->priv;

	return &et->sc;
}

static struct syscall_tp *evsel__syscall_tp(struct evsel *evsel)
{
	if (evsel->priv == NULL) {
		evsel->priv = evsel_trace__new();
		if (evsel->priv == NULL)
			return NULL;
	}

	return __evsel__syscall_tp(evsel);
}

/*
 * Used with all the other tracepoints.
 */
static inline struct syscall_arg_fmt *__evsel__syscall_arg_fmt(struct evsel *evsel)
{
	struct evsel_trace *et = evsel->priv;

	return et->fmt;
}

static struct syscall_arg_fmt *evsel__syscall_arg_fmt(struct evsel *evsel)
{
	struct evsel_trace *et = evsel->priv;

	if (evsel->priv == NULL) {
		et = evsel->priv = evsel_trace__new();

		if (et == NULL)
			return NULL;
	}

	if (et->fmt == NULL) {
		et->fmt = calloc(evsel->tp_format->format.nr_fields, sizeof(struct syscall_arg_fmt));
		if (et->fmt == NULL)
			goto out_delete;
	}

	return __evsel__syscall_arg_fmt(evsel);

out_delete:
	evsel_trace__delete(evsel->priv);
	evsel->priv = NULL;
	return NULL;
}

static int evsel__init_tp_uint_field(struct evsel *evsel, struct tp_field *field, const char *name)
{
	struct tep_format_field *format_field = evsel__field(evsel, name);

	if (format_field == NULL)
		return -1;

	return tp_field__init_uint(field, format_field, evsel->needs_swap);
}

#define perf_evsel__init_sc_tp_uint_field(evsel, name) \
	({ struct syscall_tp *sc = __evsel__syscall_tp(evsel);\
	   evsel__init_tp_uint_field(evsel, &sc->name, #name); })

static int evsel__init_tp_ptr_field(struct evsel *evsel, struct tp_field *field, const char *name)
{
	struct tep_format_field *format_field = evsel__field(evsel, name);

	if (format_field == NULL)
		return -1;

	return tp_field__init_ptr(field, format_field);
}

#define perf_evsel__init_sc_tp_ptr_field(evsel, name) \
	({ struct syscall_tp *sc = __evsel__syscall_tp(evsel);\
	   evsel__init_tp_ptr_field(evsel, &sc->name, #name); })

static void evsel__delete_priv(struct evsel *evsel)
{
	zfree(&evsel->priv);
	evsel__delete(evsel);
}

static int evsel__init_syscall_tp(struct evsel *evsel)
{
	struct syscall_tp *sc = evsel__syscall_tp(evsel);

	if (sc != NULL) {
		if (evsel__init_tp_uint_field(evsel, &sc->id, "__syscall_nr") &&
		    evsel__init_tp_uint_field(evsel, &sc->id, "nr"))
			return -ENOENT;
		return 0;
	}

	return -ENOMEM;
}

static int evsel__init_augmented_syscall_tp(struct evsel *evsel, struct evsel *tp)
{
	struct syscall_tp *sc = evsel__syscall_tp(evsel);

	if (sc != NULL) {
		struct tep_format_field *syscall_id = evsel__field(tp, "id");
		if (syscall_id == NULL)
			syscall_id = evsel__field(tp, "__syscall_nr");
		if (syscall_id == NULL ||
		    __tp_field__init_uint(&sc->id, syscall_id->size, syscall_id->offset, evsel->needs_swap))
			return -EINVAL;

		return 0;
	}

	return -ENOMEM;
}

static int evsel__init_augmented_syscall_tp_args(struct evsel *evsel)
{
	struct syscall_tp *sc = __evsel__syscall_tp(evsel);

	return __tp_field__init_ptr(&sc->args, sc->id.offset + sizeof(u64));
}

static int evsel__init_augmented_syscall_tp_ret(struct evsel *evsel)
{
	struct syscall_tp *sc = __evsel__syscall_tp(evsel);

	return __tp_field__init_uint(&sc->ret, sizeof(u64), sc->id.offset + sizeof(u64), evsel->needs_swap);
}

static int evsel__init_raw_syscall_tp(struct evsel *evsel, void *handler)
{
	if (evsel__syscall_tp(evsel) != NULL) {
		if (perf_evsel__init_sc_tp_uint_field(evsel, id))
			return -ENOENT;

		evsel->handler = handler;
		return 0;
	}

	return -ENOMEM;
}

static struct evsel *perf_evsel__raw_syscall_newtp(const char *direction, void *handler)
{
	struct evsel *evsel = evsel__newtp("raw_syscalls", direction);

	/* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */
	if (IS_ERR(evsel))
		evsel = evsel__newtp("syscalls", direction);

	if (IS_ERR(evsel))
		return NULL;

	if (evsel__init_raw_syscall_tp(evsel, handler))
		goto out_delete;

	return evsel;

out_delete:
	evsel__delete_priv(evsel);
	return NULL;
}

#define perf_evsel__sc_tp_uint(evsel, name, sample) \
	({ struct syscall_tp *fields = __evsel__syscall_tp(evsel); \
	   fields->name.integer(&fields->name, sample); })

#define perf_evsel__sc_tp_ptr(evsel, name, sample) \
	({ struct syscall_tp *fields = __evsel__syscall_tp(evsel); \
	   fields->name.pointer(&fields->name, sample); })

size_t strarray__scnprintf_suffix(struct strarray *sa, char *bf, size_t size, const char *intfmt, bool show_suffix, int val)
{
	int idx = val - sa->offset;

	if (idx < 0 || idx >= sa->nr_entries || sa->entries[idx] == NULL) {
		size_t printed = scnprintf(bf, size, intfmt, val);
		if (show_suffix)
			printed += scnprintf(bf + printed, size - printed, " /* %s??? */", sa->prefix);
		return printed;
	}

	return scnprintf(bf, size, "%s%s", sa->entries[idx], show_suffix ? sa->prefix : "");
}

size_t strarray__scnprintf(struct strarray *sa, char *bf, size_t size, const char *intfmt, bool show_prefix, int val)
{
	int idx = val - sa->offset;

	if (idx < 0 || idx >= sa->nr_entries || sa->entries[idx] == NULL) {
		size_t printed = scnprintf(bf, size, intfmt, val);
		if (show_prefix)
			printed += scnprintf(bf + printed, size - printed, " /* %s??? */", sa->prefix);
		return printed;
	}

	return scnprintf(bf, size, "%s%s", show_prefix ? sa->prefix : "", sa->entries[idx]);
}

static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size,
						const char *intfmt,
					        struct syscall_arg *arg)
{
	return strarray__scnprintf(arg->parm, bf, size, intfmt, arg->show_string_prefix, arg->val);
}

static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size,
					      struct syscall_arg *arg)
{
	return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg);
}

#define SCA_STRARRAY syscall_arg__scnprintf_strarray

bool syscall_arg__strtoul_strarray(char *bf, size_t size, struct syscall_arg *arg, u64 *ret)
{
	return strarray__strtoul(arg->parm, bf, size, ret);
}

bool syscall_arg__strtoul_strarray_flags(char *bf, size_t size, struct syscall_arg *arg, u64 *ret)
{
	return strarray__strtoul_flags(arg->parm, bf, size, ret);
}

bool syscall_arg__strtoul_strarrays(char *bf, size_t size, struct syscall_arg *arg, u64 *ret)
{
	return strarrays__strtoul(arg->parm, bf, size, ret);
}

size_t syscall_arg__scnprintf_strarray_flags(char *bf, size_t size, struct syscall_arg *arg)
{
	return strarray__scnprintf_flags(arg->parm, bf, size, arg->show_string_prefix, arg->val);
}

size_t strarrays__scnprintf(struct strarrays *sas, char *bf, size_t size, const char *intfmt, bool show_prefix, int val)
{
	size_t printed;
	int i;

	for (i = 0; i < sas->nr_entries; ++i) {
		struct strarray *sa = sas->entries[i];
		int idx = val - sa->offset;

		if (idx >= 0 && idx < sa->nr_entries) {
			if (sa->entries[idx] == NULL)
				break;
			return scnprintf(bf, size, "%s%s", show_prefix ? sa->prefix : "", sa->entries[idx]);
		}
	}

	printed = scnprintf(bf, size, intfmt, val);
	if (show_prefix)
		printed += scnprintf(bf + printed, size - printed, " /* %s??? */", sas->entries[0]->prefix);
	return printed;
}

bool strarray__strtoul(struct strarray *sa, char *bf, size_t size, u64 *ret)
{
	int i;

	for (i = 0; i < sa->nr_entries; ++i) {
		if (sa->entries[i] && strncmp(sa->entries[i], bf, size) == 0 && sa->entries[i][size] == '\0') {
			*ret = sa->offset + i;
			return true;
		}
	}

	return false;
}

bool strarray__strtoul_flags(struct strarray *sa, char *bf, size_t size, u64 *ret)
{
	u64 val = 0;
	char *tok = bf, *sep, *end;

	*ret = 0;

	while (size != 0) {
		int toklen = size;

		sep = memchr(tok, '|', size);
		if (sep != NULL) {
			size -= sep - tok + 1;

			end = sep - 1;
			while (end > tok && isspace(*end))
				--end;

			toklen = end - tok + 1;
		}

		while (isspace(*tok))
			++tok;

		if (isalpha(*tok) || *tok == '_') {
			if (!strarray__strtoul(sa, tok, toklen, &val))
				return false;
		} else {
			bool is_hexa = tok[0] == 0 && (tok[1] = 'x' || tok[1] == 'X');

			val = strtoul(tok, NULL, is_hexa ? 16 : 0);
		}

		*ret |= (1 << (val - 1));

		if (sep == NULL)
			break;
		tok = sep + 1;
	}

	return true;
}

bool strarrays__strtoul(struct strarrays *sas, char *bf, size_t size, u64 *ret)
{
	int i;

	for (i = 0; i < sas->nr_entries; ++i) {
		struct strarray *sa = sas->entries[i];

		if (strarray__strtoul(sa, bf, size, ret))
			return true;
	}

	return false;
}

size_t syscall_arg__scnprintf_strarrays(char *bf, size_t size,
					struct syscall_arg *arg)
{
	return strarrays__scnprintf(arg->parm, bf, size, "%d", arg->show_string_prefix, arg->val);
}

#ifndef AT_FDCWD
#define AT_FDCWD	-100
#endif

static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size,
					   struct syscall_arg *arg)
{
	int fd = arg->val;
	const char *prefix = "AT_FD";

	if (fd == AT_FDCWD)
		return scnprintf(bf, size, "%s%s", arg->show_string_prefix ? prefix : "", "CWD");

	return syscall_arg__scnprintf_fd(bf, size, arg);
}

#define SCA_FDAT syscall_arg__scnprintf_fd_at

static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
					      struct syscall_arg *arg);

#define SCA_CLOSE_FD syscall_arg__scnprintf_close_fd

size_t syscall_arg__scnprintf_hex(char *bf, size_t size, struct syscall_arg *arg)
{
	return scnprintf(bf, size, "%#lx", arg->val);
}

size_t syscall_arg__scnprintf_ptr(char *bf, size_t size, struct syscall_arg *arg)
{
	if (arg->val == 0)
		return scnprintf(bf, size, "NULL");
	return syscall_arg__scnprintf_hex(bf, size, arg);
}

size_t syscall_arg__scnprintf_int(char *bf, size_t size, struct syscall_arg *arg)
{
	return scnprintf(bf, size, "%d", arg->val);
}

size_t syscall_arg__scnprintf_long(char *bf, size_t size, struct syscall_arg *arg)
{
	return scnprintf(bf, size, "%ld", arg->val);
}

static size_t syscall_arg__scnprintf_char_array(char *bf, size_t size, struct syscall_arg *arg)
{
	// XXX Hey, maybe for sched:sched_switch prev/next comm fields we can
	//     fill missing comms using thread__set_comm()...
	//     here or in a special syscall_arg__scnprintf_pid_sched_tp...
	return scnprintf(bf, size, "\"%-.*s\"", arg->fmt->nr_entries ?: arg->len, arg->val);
}

#define SCA_CHAR_ARRAY syscall_arg__scnprintf_char_array

static const char *bpf_cmd[] = {
	"MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM",
	"MAP_GET_NEXT_KEY", "PROG_LOAD",
};
static DEFINE_STRARRAY(bpf_cmd, "BPF_");

static const char *fsmount_flags[] = {
	[1] = "CLOEXEC",
};
static DEFINE_STRARRAY(fsmount_flags, "FSMOUNT_");

#include "trace/beauty/generated/fsconfig_arrays.c"

static DEFINE_STRARRAY(fsconfig_cmds, "FSCONFIG_");

static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", };
static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, "EPOLL_CTL_", 1);

static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", };
static DEFINE_STRARRAY(itimers, "ITIMER_");

static const char *keyctl_options[] = {
	"GET_KEYRING_ID", "JOIN_SESSION_KEYRING", "UPDATE", "REVOKE", "CHOWN",
	"SETPERM", "DESCRIBE", "CLEAR", "LINK", "UNLINK", "SEARCH", "READ",
	"INSTANTIATE", "NEGATE", "SET_REQKEY_KEYRING", "SET_TIMEOUT",
	"ASSUME_AUTHORITY", "GET_SECURITY", "SESSION_TO_PARENT", "REJECT",
	"INSTANTIATE_IOV", "INVALIDATE", "GET_PERSISTENT",
};
static DEFINE_STRARRAY(keyctl_options, "KEYCTL_");

static const char *whences[] = { "SET", "CUR", "END",
#ifdef SEEK_DATA
"DATA",
#endif
#ifdef SEEK_HOLE
"HOLE",
#endif
};
static DEFINE_STRARRAY(whences, "SEEK_");

static const char *fcntl_cmds[] = {
	"DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK",
	"SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "GETLK64",
	"SETLK64", "SETLKW64", "SETOWN_EX", "GETOWN_EX",
	"GETOWNER_UIDS",
};
static DEFINE_STRARRAY(fcntl_cmds, "F_");

static const char *fcntl_linux_specific_cmds[] = {
	"SETLEASE", "GETLEASE", "NOTIFY", [5] =	"CANCELLK", "DUPFD_CLOEXEC",
	"SETPIPE_SZ", "GETPIPE_SZ", "ADD_SEALS", "GET_SEALS",
	"GET_RW_HINT", "SET_RW_HINT", "GET_FILE_RW_HINT", "SET_FILE_RW_HINT",
};

static DEFINE_STRARRAY_OFFSET(fcntl_linux_specific_cmds, "F_", F_LINUX_SPECIFIC_BASE);

static struct strarray *fcntl_cmds_arrays[] = {
	&strarray__fcntl_cmds,
	&strarray__fcntl_linux_specific_cmds,
};

static DEFINE_STRARRAYS(fcntl_cmds_arrays);

static const char *rlimit_resources[] = {
	"CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE",
	"MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO",
	"RTTIME",
};
static DEFINE_STRARRAY(rlimit_resources, "RLIMIT_");

static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", };
static DEFINE_STRARRAY(sighow, "SIG_");

static const char *clockid[] = {
	"REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID",
	"MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE", "BOOTTIME",
	"REALTIME_ALARM", "BOOTTIME_ALARM", "SGI_CYCLE", "TAI"
};
static DEFINE_STRARRAY(clockid, "CLOCK_");

static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size,
						 struct syscall_arg *arg)
{
	bool show_prefix = arg->show_string_prefix;
	const char *suffix = "_OK";
	size_t printed = 0;
	int mode = arg->val;

	if (mode == F_OK) /* 0 */
		return scnprintf(bf, size, "F%s", show_prefix ? suffix : "");
#define	P_MODE(n) \
	if (mode & n##_OK) { \
		printed += scnprintf(bf + printed, size - printed, "%s%s", #n, show_prefix ? suffix : ""); \
		mode &= ~n##_OK; \
	}

	P_MODE(R);
	P_MODE(W);
	P_MODE(X);
#undef P_MODE

	if (mode)
		printed += scnprintf(bf + printed, size - printed, "|%#x", mode);

	return printed;
}

#define SCA_ACCMODE syscall_arg__scnprintf_access_mode

static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
					      struct syscall_arg *arg);

#define SCA_FILENAME syscall_arg__scnprintf_filename

static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size,
						struct syscall_arg *arg)
{
	bool show_prefix = arg->show_string_prefix;
	const char *prefix = "O_";
	int printed = 0, flags = arg->val;

#define	P_FLAG(n) \
	if (flags & O_##n) { \
		printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #n); \
		flags &= ~O_##n; \
	}

	P_FLAG(CLOEXEC);
	P_FLAG(NONBLOCK);
#undef P_FLAG

	if (flags)
		printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);

	return printed;
}

#define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags

#ifndef GRND_NONBLOCK
#define GRND_NONBLOCK	0x0001
#endif
#ifndef GRND_RANDOM
#define GRND_RANDOM	0x0002
#endif

static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size,
						   struct syscall_arg *arg)
{
	bool show_prefix = arg->show_string_prefix;
	const char *prefix = "GRND_";
	int printed = 0, flags = arg->val;

#define	P_FLAG(n) \
	if (flags & GRND_##n) { \
		printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #n); \
		flags &= ~GRND_##n; \
	}

	P_FLAG(RANDOM);
	P_FLAG(NONBLOCK);
#undef P_FLAG

	if (flags)
		printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);

	return printed;
}

#define SCA_GETRANDOM_FLAGS syscall_arg__scnprintf_getrandom_flags

#define STRARRAY(name, array) \
	  { .scnprintf	= SCA_STRARRAY, \
	    .strtoul	= STUL_STRARRAY, \
	    .parm	= &strarray__##array, }

#define STRARRAY_FLAGS(name, array) \
	  { .scnprintf	= SCA_STRARRAY_FLAGS, \
	    .strtoul	= STUL_STRARRAY_FLAGS, \
	    .parm	= &strarray__##array, }

#include "trace/beauty/arch_errno_names.c"
#include "trace/beauty/eventfd.c"
#include "trace/beauty/futex_op.c"
#include "trace/beauty/futex_val3.c"
#include "trace/beauty/mmap.c"
#include "trace/beauty/mode_t.c"
#include "trace/beauty/msg_flags.c"
#include "trace/beauty/open_flags.c"
#include "trace/beauty/perf_event_open.c"
#include "trace/beauty/pid.c"
#include "trace/beauty/sched_policy.c"
#include "trace/beauty/seccomp.c"
#include "trace/beauty/signum.c"
#include "trace/beauty/socket_type.c"
#include "trace/beauty/waitid_options.c"

static struct syscall_fmt syscall_fmts[] = {
	{ .name	    = "access",
	  .arg = { [1] = { .scnprintf = SCA_ACCMODE,  /* mode */ }, }, },
	{ .name	    = "arch_prctl",
	  .arg = { [0] = { .scnprintf = SCA_X86_ARCH_PRCTL_CODE, /* code */ },
		   [1] = { .scnprintf = SCA_PTR, /* arg2 */ }, }, },
	{ .name	    = "bind",
	  .arg = { [0] = { .scnprintf = SCA_INT, /* fd */ },
		   [1] = { .scnprintf = SCA_SOCKADDR, /* umyaddr */ },
		   [2] = { .scnprintf = SCA_INT, /* addrlen */ }, }, },
	{ .name	    = "bpf",
	  .arg = { [0] = STRARRAY(cmd, bpf_cmd), }, },
	{ .name	    = "brk",	    .hexret = true,
	  .arg = { [0] = { .scnprintf = SCA_PTR, /* brk */ }, }, },
	{ .name     = "clock_gettime",
	  .arg = { [0] = STRARRAY(clk_id, clockid), }, },
	{ .name	    = "clone",	    .errpid = true, .nr_args = 5,
	  .arg = { [0] = { .name = "flags",	    .scnprintf = SCA_CLONE_FLAGS, },
		   [1] = { .name = "child_stack",   .scnprintf = SCA_HEX, },
		   [2] = { .name = "parent_tidptr", .scnprintf = SCA_HEX, },
		   [3] = { .name = "child_tidptr",  .scnprintf = SCA_HEX, },
		   [4] = { .name = "tls",	    .scnprintf = SCA_HEX, }, }, },
	{ .name	    = "close",
	  .arg = { [0] = { .scnprintf = SCA_CLOSE_FD, /* fd */ }, }, },
	{ .name	    = "connect",
	  .arg = { [0] = { .scnprintf = SCA_INT, /* fd */ },
		   [1] = { .scnprintf = SCA_SOCKADDR, /* servaddr */ },
		   [2] = { .scnprintf = SCA_INT, /* addrlen */ }, }, },
	{ .name	    = "epoll_ctl",
	  .arg = { [1] = STRARRAY(op, epoll_ctl_ops), }, },
	{ .name	    = "eventfd2",
	  .arg = { [1] = { .scnprintf = SCA_EFD_FLAGS, /* flags */ }, }, },
	{ .name	    = "fchmodat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
	{ .name	    = "fchownat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
	{ .name	    = "fcntl",
	  .arg = { [1] = { .scnprintf = SCA_FCNTL_CMD,  /* cmd */
			   .strtoul   = STUL_STRARRAYS,
			   .parm      = &strarrays__fcntl_cmds_arrays,
			   .show_zero = true, },
		   [2] = { .scnprintf =  SCA_FCNTL_ARG, /* arg */ }, }, },
	{ .name	    = "flock",
	  .arg = { [1] = { .scnprintf = SCA_FLOCK, /* cmd */ }, }, },
	{ .name     = "fsconfig",
	  .arg = { [1] = STRARRAY(cmd, fsconfig_cmds), }, },
	{ .name     = "fsmount",
	  .arg = { [1] = STRARRAY_FLAGS(flags, fsmount_flags),
		   [2] = { .scnprintf = SCA_FSMOUNT_ATTR_FLAGS, /* attr_flags */ }, }, },
	{ .name     = "fspick",
	  .arg = { [0] = { .scnprintf = SCA_FDAT,	  /* dfd */ },
		   [1] = { .scnprintf = SCA_FILENAME,	  /* path */ },
		   [2] = { .scnprintf = SCA_FSPICK_FLAGS, /* flags */ }, }, },
	{ .name	    = "fstat", .alias = "newfstat", },
	{ .name	    = "fstatat", .alias = "newfstatat", },
	{ .name	    = "futex",
	  .arg = { [1] = { .scnprintf = SCA_FUTEX_OP, /* op */ },
		   [5] = { .scnprintf = SCA_FUTEX_VAL3, /* val3 */ }, }, },
	{ .name	    = "futimesat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
	{ .name	    = "getitimer",
	  .arg = { [0] = STRARRAY(which, itimers), }, },
	{ .name	    = "getpid",	    .errpid = true, },
	{ .name	    = "getpgid",    .errpid = true, },
	{ .name	    = "getppid",    .errpid = true, },
	{ .name	    = "getrandom",
	  .arg = { [2] = { .scnprintf = SCA_GETRANDOM_FLAGS, /* flags */ }, }, },
	{ .name	    = "getrlimit",
	  .arg = { [0] = STRARRAY(resource, rlimit_resources), }, },
	{ .name	    = "gettid",	    .errpid = true, },
	{ .name	    = "ioctl",
	  .arg = {
#if defined(__i386__) || defined(__x86_64__)
/*
 * FIXME: Make this available to all arches.
 */
		   [1] = { .scnprintf = SCA_IOCTL_CMD, /* cmd */ },
		   [2] = { .scnprintf = SCA_HEX, /* arg */ }, }, },
#else
		   [2] = { .scnprintf = SCA_HEX, /* arg */ }, }, },
#endif
	{ .name	    = "kcmp",	    .nr_args = 5,
	  .arg = { [0] = { .name = "pid1",	.scnprintf = SCA_PID, },
		   [1] = { .name = "pid2",	.scnprintf = SCA_PID, },
		   [2] = { .name = "type",	.scnprintf = SCA_KCMP_TYPE, },
		   [3] = { .name = "idx1",	.scnprintf = SCA_KCMP_IDX, },
		   [4] = { .name = "idx2",	.scnprintf = SCA_KCMP_IDX, }, }, },
	{ .name	    = "keyctl",
	  .arg = { [0] = STRARRAY(option, keyctl_options), }, },
	{ .name	    = "kill",
	  .arg = { [1] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
	{ .name	    = "linkat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
	{ .name	    = "lseek",
	  .arg = { [2] = STRARRAY(whence, whences), }, },
	{ .name	    = "lstat", .alias = "newlstat", },
	{ .name     = "madvise",
	  .arg = { [0] = { .scnprintf = SCA_HEX,      /* start */ },
		   [2] = { .scnprintf = SCA_MADV_BHV, /* behavior */ }, }, },
	{ .name	    = "mkdirat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
	{ .name	    = "mknodat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
	{ .name	    = "mmap",	    .hexret = true,
/* The standard mmap maps to old_mmap on s390x */
#if defined(__s390x__)
	.alias = "old_mmap",
#endif
	  .arg = { [2] = { .scnprintf = SCA_MMAP_PROT,	/* prot */ },
		   [3] = { .scnprintf = SCA_MMAP_FLAGS,	/* flags */
			   .strtoul   = STUL_STRARRAY_FLAGS,
			   .parm      = &strarray__mmap_flags, },
		   [5] = { .scnprintf = SCA_HEX,	/* offset */ }, }, },
	{ .name	    = "mount",
	  .arg = { [0] = { .scnprintf = SCA_FILENAME, /* dev_name */ },
		   [3] = { .scnprintf = SCA_MOUNT_FLAGS, /* flags */
			   .mask_val  = SCAMV_MOUNT_FLAGS, /* flags */ }, }, },
	{ .name	    = "move_mount",
	  .arg = { [0] = { .scnprintf = SCA_FDAT,	/* from_dfd */ },
		   [1] = { .scnprintf = SCA_FILENAME, /* from_pathname */ },
		   [2] = { .scnprintf = SCA_FDAT,	/* to_dfd */ },
		   [3] = { .scnprintf = SCA_FILENAME, /* to_pathname */ },
		   [4] = { .scnprintf = SCA_MOVE_MOUNT_FLAGS, /* flags */ }, }, },
	{ .name	    = "mprotect",
	  .arg = { [0] = { .scnprintf = SCA_HEX,	/* start */ },
		   [2] = { .scnprintf = SCA_MMAP_PROT,	/* prot */ }, }, },
	{ .name	    = "mq_unlink",
	  .arg = { [0] = { .scnprintf = SCA_FILENAME, /* u_name */ }, }, },
	{ .name	    = "mremap",	    .hexret = true,
	  .arg = { [3] = { .scnprintf = SCA_MREMAP_FLAGS, /* flags */ }, }, },
	{ .name	    = "name_to_handle_at",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
	{ .name	    = "newfstatat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
	{ .name	    = "open",
	  .arg = { [1] = { .scnprintf = SCA_OPEN_FLAGS, /* flags */ }, }, },
	{ .name	    = "open_by_handle_at",
	  .arg = { [0] = { .scnprintf = SCA_FDAT,	/* dfd */ },
		   [2] = { .scnprintf = SCA_OPEN_FLAGS, /* flags */ }, }, },
	{ .name	    = "openat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT,	/* dfd */ },
		   [2] = { .scnprintf = SCA_OPEN_FLAGS, /* flags */ }, }, },
	{ .name	    = "perf_event_open",
	  .arg = { [2] = { .scnprintf = SCA_INT,	/* cpu */ },
		   [3] = { .scnprintf = SCA_FD,		/* group_fd */ },
		   [4] = { .scnprintf = SCA_PERF_FLAGS, /* flags */ }, }, },
	{ .name	    = "pipe2",
	  .arg = { [1] = { .scnprintf = SCA_PIPE_FLAGS, /* flags */ }, }, },
	{ .name	    = "pkey_alloc",
	  .arg = { [1] = { .scnprintf = SCA_PKEY_ALLOC_ACCESS_RIGHTS,	/* access_rights */ }, }, },
	{ .name	    = "pkey_free",
	  .arg = { [0] = { .scnprintf = SCA_INT,	/* key */ }, }, },
	{ .name	    = "pkey_mprotect",
	  .arg = { [0] = { .scnprintf = SCA_HEX,	/* start */ },
		   [2] = { .scnprintf = SCA_MMAP_PROT,	/* prot */ },
		   [3] = { .scnprintf = SCA_INT,	/* pkey */ }, }, },
	{ .name	    = "poll", .timeout = true, },
	{ .name	    = "ppoll", .timeout = true, },
	{ .name	    = "prctl",
	  .arg = { [0] = { .scnprintf = SCA_PRCTL_OPTION, /* option */
			   .strtoul   = STUL_STRARRAY,
			   .parm      = &strarray__prctl_options, },
		   [1] = { .scnprintf = SCA_PRCTL_ARG2, /* arg2 */ },
		   [2] = { .scnprintf = SCA_PRCTL_ARG3, /* arg3 */ }, }, },
	{ .name	    = "pread", .alias = "pread64", },
	{ .name	    = "preadv", .alias = "pread", },
	{ .name	    = "prlimit64",
	  .arg = { [1] = STRARRAY(resource, rlimit_resources), }, },
	{ .name	    = "pwrite", .alias = "pwrite64", },
	{ .name	    = "readlinkat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
	{ .name	    = "recvfrom",
	  .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
	{ .name	    = "recvmmsg",
	  .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
	{ .name	    = "recvmsg",
	  .arg = { [2] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
	{ .name	    = "renameat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* olddirfd */ },
		   [2] = { .scnprintf = SCA_FDAT, /* newdirfd */ }, }, },
	{ .name	    = "renameat2",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* olddirfd */ },
		   [2] = { .scnprintf = SCA_FDAT, /* newdirfd */ },
		   [4] = { .scnprintf = SCA_RENAMEAT2_FLAGS, /* flags */ }, }, },
	{ .name	    = "rt_sigaction",
	  .arg = { [0] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
	{ .name	    = "rt_sigprocmask",
	  .arg = { [0] = STRARRAY(how, sighow), }, },
	{ .name	    = "rt_sigqueueinfo",
	  .arg = { [1] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
	{ .name	    = "rt_tgsigqueueinfo",
	  .arg = { [2] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
	{ .name	    = "sched_setscheduler",
	  .arg = { [1] = { .scnprintf = SCA_SCHED_POLICY, /* policy */ }, }, },
	{ .name	    = "seccomp",
	  .arg = { [0] = { .scnprintf = SCA_SECCOMP_OP,	   /* op */ },
		   [1] = { .scnprintf = SCA_SECCOMP_FLAGS, /* flags */ }, }, },
	{ .name	    = "select", .timeout = true, },
	{ .name	    = "sendfile", .alias = "sendfile64", },
	{ .name	    = "sendmmsg",
	  .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
	{ .name	    = "sendmsg",
	  .arg = { [2] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
	{ .name	    = "sendto",
	  .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ },
		   [4] = { .scnprintf = SCA_SOCKADDR, /* addr */ }, }, },
	{ .name	    = "set_tid_address", .errpid = true, },
	{ .name	    = "setitimer",
	  .arg = { [0] = STRARRAY(which, itimers), }, },
	{ .name	    = "setrlimit",
	  .arg = { [0] = STRARRAY(resource, rlimit_resources), }, },
	{ .name	    = "socket",
	  .arg = { [0] = STRARRAY(family, socket_families),
		   [1] = { .scnprintf = SCA_SK_TYPE, /* type */ },
		   [2] = { .scnprintf = SCA_SK_PROTO, /* protocol */ }, }, },
	{ .name	    = "socketpair",
	  .arg = { [0] = STRARRAY(family, socket_families),
		   [1] = { .scnprintf = SCA_SK_TYPE, /* type */ },
		   [2] = { .scnprintf = SCA_SK_PROTO, /* protocol */ }, }, },
	{ .name	    = "stat", .alias = "newstat", },
	{ .name	    = "statx",
	  .arg = { [0] = { .scnprintf = SCA_FDAT,	 /* fdat */ },
		   [2] = { .scnprintf = SCA_STATX_FLAGS, /* flags */ } ,
		   [3] = { .scnprintf = SCA_STATX_MASK,	 /* mask */ }, }, },
	{ .name	    = "swapoff",
	  .arg = { [0] = { .scnprintf = SCA_FILENAME, /* specialfile */ }, }, },
	{ .name	    = "swapon",
	  .arg = { [0] = { .scnprintf = SCA_FILENAME, /* specialfile */ }, }, },
	{ .name	    = "symlinkat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
	{ .name	    = "sync_file_range",
	  .arg = { [3] = { .scnprintf = SCA_SYNC_FILE_RANGE_FLAGS, /* flags */ }, }, },
	{ .name	    = "tgkill",
	  .arg = { [2] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
	{ .name	    = "tkill",
	  .arg = { [1] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
	{ .name     = "umount2", .alias = "umount",
	  .arg = { [0] = { .scnprintf = SCA_FILENAME, /* name */ }, }, },
	{ .name	    = "uname", .alias = "newuname", },
	{ .name	    = "unlinkat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
	{ .name	    = "utimensat",
	  .arg = { [0] = { .scnprintf = SCA_FDAT, /* dirfd */ }, }, },
	{ .name	    = "wait4",	    .errpid = true,
	  .arg = { [2] = { .scnprintf = SCA_WAITID_OPTIONS, /* options */ }, }, },
	{ .name	    = "waitid",	    .errpid = true,
	  .arg = { [3] = { .scnprintf = SCA_WAITID_OPTIONS, /* options */ }, }, },
};

static int syscall_fmt__cmp(const void *name, const void *fmtp)
{
	const struct syscall_fmt *fmt = fmtp;
	return strcmp(name, fmt->name);
}

static struct syscall_fmt *__syscall_fmt__find(struct syscall_fmt *fmts, const int nmemb, const char *name)
{
	return bsearch(name, fmts, nmemb, sizeof(struct syscall_fmt), syscall_fmt__cmp);
}

static struct syscall_fmt *syscall_fmt__find(const char *name)
{
	const int nmemb = ARRAY_SIZE(syscall_fmts);
	return __syscall_fmt__find(syscall_fmts, nmemb, name);
}

static struct syscall_fmt *__syscall_fmt__find_by_alias(struct syscall_fmt *fmts, const int nmemb, const char *alias)
{
	int i;

	for (i = 0; i < nmemb; ++i) {
		if (fmts[i].alias && strcmp(fmts[i].alias, alias) == 0)
			return &fmts[i];
	}

	return NULL;
}

static struct syscall_fmt *syscall_fmt__find_by_alias(const char *alias)
{
	const int nmemb = ARRAY_SIZE(syscall_fmts);
	return __syscall_fmt__find_by_alias(syscall_fmts, nmemb, alias);
}

/*
 * is_exit: is this "exit" or "exit_group"?
 * is_open: is this "open" or "openat"? To associate the fd returned in sys_exit with the pathname in sys_enter.
 * args_size: sum of the sizes of the syscall arguments, anything after that is augmented stuff: pathname for openat, etc.
 * nonexistent: Just a hole in the syscall table, syscall id not allocated
 */
struct syscall {
	struct tep_event    *tp_format;
	int		    nr_args;
	int		    args_size;
	struct {
		struct bpf_program *sys_enter,
				   *sys_exit;
	}		    bpf_prog;
	bool		    is_exit;
	bool		    is_open;
	bool		    nonexistent;
	struct tep_format_field *args;
	const char	    *name;
	struct syscall_fmt  *fmt;
	struct syscall_arg_fmt *arg_fmt;
};

/*
 * Must match what is in the BPF program:
 *
 * tools/perf/examples/bpf/augmented_raw_syscalls.c
 */
struct bpf_map_syscall_entry {
	bool	enabled;
	u16	string_args_len[6];
};

/*
 * We need to have this 'calculated' boolean because in some cases we really
 * don't know what is the duration of a syscall, for instance, when we start
 * a session and some threads are waiting for a syscall to finish, say 'poll',
 * in which case all we can do is to print "( ? ) for duration and for the
 * start timestamp.
 */
static size_t fprintf_duration(unsigned long t, bool calculated, FILE *fp)
{
	double duration = (double)t / NSEC_PER_MSEC;
	size_t printed = fprintf(fp, "(");

	if (!calculated)
		printed += fprintf(fp, "         ");
	else if (duration >= 1.0)
		printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration);
	else if (duration >= 0.01)
		printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration);
	else
		printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration);
	return printed + fprintf(fp, "): ");
}

/**
 * filename.ptr: The filename char pointer that will be vfs_getname'd
 * filename.entry_str_pos: Where to insert the string translated from
 *                         filename.ptr by the vfs_getname tracepoint/kprobe.
 * ret_scnprintf: syscall args may set this to a different syscall return
 *                formatter, for instance, fcntl may return fds, file flags, etc.
 */
struct thread_trace {
	u64		  entry_time;
	bool		  entry_pending;
	unsigned long	  nr_events;
	unsigned long	  pfmaj, pfmin;
	char		  *entry_str;
	double		  runtime_ms;
	size_t		  (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
        struct {
		unsigned long ptr;
		short int     entry_str_pos;
		bool	      pending_open;
		unsigned int  namelen;
		char	      *name;
	} filename;
	struct {
		int	      max;
		struct file   *table;
	} files;

	struct intlist *syscall_stats;
};

static struct thread_trace *thread_trace__new(void)
{
	struct thread_trace *ttrace =  zalloc(sizeof(struct thread_trace));

	if (ttrace) {
		ttrace->files.max = -1;
		ttrace->syscall_stats = intlist__new(NULL);
	}

	return ttrace;
}

static struct thread_trace *thread__trace(struct thread *thread, FILE *fp)
{
	struct thread_trace *ttrace;

	if (thread == NULL)
		goto fail;

	if (thread__priv(thread) == NULL)
		thread__set_priv(thread, thread_trace__new());

	if (thread__priv(thread) == NULL)
		goto fail;

	ttrace = thread__priv(thread);
	++ttrace->nr_events;

	return ttrace;
fail:
	color_fprintf(fp, PERF_COLOR_RED,
		      "WARNING: not enough memory, dropping samples!\n");
	return NULL;
}


void syscall_arg__set_ret_scnprintf(struct syscall_arg *arg,
				    size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg))
{
	struct thread_trace *ttrace = thread__priv(arg->thread);

	ttrace->ret_scnprintf = ret_scnprintf;
}

#define TRACE_PFMAJ		(1 << 0)
#define TRACE_PFMIN		(1 << 1)

static const size_t trace__entry_str_size = 2048;

static struct file *thread_trace__files_entry(struct thread_trace *ttrace, int fd)
{
	if (fd < 0)
		return NULL;

	if (fd > ttrace->files.max) {
		struct file *nfiles = realloc(ttrace->files.table, (fd + 1) * sizeof(struct file));

		if (nfiles == NULL)
			return NULL;

		if (ttrace->files.max != -1) {
			memset(nfiles + ttrace->files.max + 1, 0,
			       (fd - ttrace->files.max) * sizeof(struct file));
		} else {
			memset(nfiles, 0, (fd + 1) * sizeof(struct file));
		}

		ttrace->files.table = nfiles;
		ttrace->files.max   = fd;
	}

	return ttrace->files.table + fd;
}

struct file *thread__files_entry(struct thread *thread, int fd)
{
	return thread_trace__files_entry(thread__priv(thread), fd);
}

static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname)
{
	struct thread_trace *ttrace = thread__priv(thread);
	struct file *file = thread_trace__files_entry(ttrace, fd);

	if (file != NULL) {
		struct stat st;
		if (stat(pathname, &st) == 0)
			file->dev_maj = major(st.st_rdev);
		file->pathname = strdup(pathname);
		if (file->pathname)
			return 0;
	}

	return -1;
}

static int thread__read_fd_path(struct thread *thread, int fd)
{
	char linkname[PATH_MAX], pathname[PATH_MAX];
	struct stat st;
	int ret;

	if (thread->pid_ == thread->tid) {
		scnprintf(linkname, sizeof(linkname),
			  "/proc/%d/fd/%d", thread->pid_, fd);
	} else {
		scnprintf(linkname, sizeof(linkname),
			  "/proc/%d/task/%d/fd/%d", thread->pid_, thread->tid, fd);
	}

	if (lstat(linkname, &st) < 0 || st.st_size + 1 > (off_t)sizeof(pathname))
		return -1;

	ret = readlink(linkname, pathname, sizeof(pathname));

	if (ret < 0 || ret > st.st_size)
		return -1;

	pathname[ret] = '\0';
	return trace__set_fd_pathname(thread, fd, pathname);
}

static const char *thread__fd_path(struct thread *thread, int fd,
				   struct trace *trace)
{
	struct thread_trace *ttrace = thread__priv(thread);

	if (ttrace == NULL || trace->fd_path_disabled)
		return NULL;

	if (fd < 0)
		return NULL;

	if ((fd > ttrace->files.max || ttrace->files.table[fd].pathname == NULL)) {
		if (!trace->live)
			return NULL;
		++trace->stats.proc_getname;
		if (thread__read_fd_path(thread, fd))
			return NULL;
	}

	return ttrace->files.table[fd].pathname;
}

size_t syscall_arg__scnprintf_fd(char *bf, size_t size, struct syscall_arg *arg)
{
	int fd = arg->val;
	size_t printed = scnprintf(bf, size, "%d", fd);
	const char *path = thread__fd_path(arg->thread, fd, arg->trace);

	if (path)
		printed += scnprintf(bf + printed, size - printed, "<%s>", path);

	return printed;
}

size_t pid__scnprintf_fd(struct trace *trace, pid_t pid, int fd, char *bf, size_t size)
{
        size_t printed = scnprintf(bf, size, "%d", fd);
	struct thread *thread = machine__find_thread(trace->host, pid, pid);

	if (thread) {
		const char *path = thread__fd_path(thread, fd, trace);

		if (path)
			printed += scnprintf(bf + printed, size - printed, "<%s>", path);

		thread__put(thread);
	}

        return printed;
}

static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
					      struct syscall_arg *arg)
{
	int fd = arg->val;
	size_t printed = syscall_arg__scnprintf_fd(bf, size, arg);
	struct thread_trace *ttrace = thread__priv(arg->thread);

	if (ttrace && fd >= 0 && fd <= ttrace->files.max)
		zfree(&ttrace->files.table[fd].pathname);

	return printed;
}

static void thread__set_filename_pos(struct thread *thread, const char *bf,
				     unsigned long ptr)
{
	struct thread_trace *ttrace = thread__priv(thread);

	ttrace->filename.ptr = ptr;
	ttrace->filename.entry_str_pos = bf - ttrace->entry_str;
}

static size_t syscall_arg__scnprintf_augmented_string(struct syscall_arg *arg, char *bf, size_t size)
{
	struct augmented_arg *augmented_arg = arg->augmented.args;
	size_t printed = scnprintf(bf, size, "\"%.*s\"", augmented_arg->size, augmented_arg->value);
	/*
	 * So that the next arg with a payload can consume its augmented arg, i.e. for rename* syscalls
	 * we would have two strings, each prefixed by its size.
	 */
	int consumed = sizeof(*augmented_arg) + augmented_arg->size;

	arg->augmented.args = ((void *)arg->augmented.args) + consumed;
	arg->augmented.size -= consumed;

	return printed;
}

static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
					      struct syscall_arg *arg)
{
	unsigned long ptr = arg->val;

	if (arg->augmented.args)
		return syscall_arg__scnprintf_augmented_string(arg, bf, size);

	if (!arg->trace->vfs_getname)
		return scnprintf(bf, size, "%#x", ptr);

	thread__set_filename_pos(arg->thread, bf, ptr);
	return 0;
}

static bool trace__filter_duration(struct trace *trace, double t)
{
	return t < (trace->duration_filter * NSEC_PER_MSEC);
}

static size_t __trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
{
	double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC;

	return fprintf(fp, "%10.3f ", ts);
}

/*
 * We're handling tstamp=0 as an undefined tstamp, i.e. like when we are
 * using ttrace->entry_time for a thread that receives a sys_exit without
 * first having received a sys_enter ("poll" issued before tracing session
 * starts, lost sys_enter exit due to ring buffer overflow).
 */
static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
{
	if (tstamp > 0)
		return __trace__fprintf_tstamp(trace, tstamp, fp);

	return fprintf(fp, "         ? ");
}

static bool done = false;
static bool interrupted = false;

static void sig_handler(int sig)
{
	done = true;
	interrupted = sig == SIGINT;
}

static size_t trace__fprintf_comm_tid(struct trace *trace, struct thread *thread, FILE *fp)
{
	size_t printed = 0;

	if (trace->multiple_threads) {
		if (trace->show_comm)
			printed += fprintf(fp, "%.14s/", thread__comm_str(thread));
		printed += fprintf(fp, "%d ", thread->tid);
	}

	return printed;
}

static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread,
					u64 duration, bool duration_calculated, u64 tstamp, FILE *fp)
{
	size_t printed = 0;

	if (trace->show_tstamp)
		printed = trace__fprintf_tstamp(trace, tstamp, fp);
	if (trace->show_duration)
		printed += fprintf_duration(duration, duration_calculated, fp);
	return printed + trace__fprintf_comm_tid(trace, thread, fp);
}

static int trace__process_event(struct trace *trace, struct machine *machine,
				union perf_event *event, struct perf_sample *sample)
{
	int ret = 0;

	switch (event->header.type) {
	case PERF_RECORD_LOST:
		color_fprintf(trace->output, PERF_COLOR_RED,
			      "LOST %" PRIu64 " events!\n", event->lost.lost);
		ret = machine__process_lost_event(machine, event, sample);
		break;
	default:
		ret = machine__process_event(machine, event, sample);
		break;
	}

	return ret;
}

static int trace__tool_process(struct perf_tool *tool,
			       union perf_event *event,
			       struct perf_sample *sample,
			       struct machine *machine)
{
	struct trace *trace = container_of(tool, struct trace, tool);
	return trace__process_event(trace, machine, event, sample);
}

static char *trace__machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp)
{
	struct machine *machine = vmachine;

	if (machine->kptr_restrict_warned)
		return NULL;

	if (symbol_conf.kptr_restrict) {
		pr_warning("Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n"
			   "Check /proc/sys/kernel/kptr_restrict and /proc/sys/kernel/perf_event_paranoid.\n\n"
			   "Kernel samples will not be resolved.\n");
		machine->kptr_restrict_warned = true;
		return NULL;
	}

	return machine__resolve_kernel_addr(vmachine, addrp, modp);
}

static int trace__symbols_init(struct trace *trace, struct evlist *evlist)
{
	int err = symbol__init(NULL);

	if (err)
		return err;

	trace->host = machine__new_host();
	if (trace->host == NULL)
		return -ENOMEM;

	err = trace_event__register_resolver(trace->host, trace__machine__resolve_kernel_addr);
	if (err < 0)
		goto out;

	err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
					    evlist->core.threads, trace__tool_process, false,
					    1);
out:
	if (err)
		symbol__exit();

	return err;
}

static void trace__symbols__exit(struct trace *trace)
{
	machine__exit(trace->host);
	trace->host = NULL;

	symbol__exit();
}

static int syscall__alloc_arg_fmts(struct syscall *sc, int nr_args)
{
	int idx;

	if (nr_args == 6 && sc->fmt && sc->fmt->nr_args != 0)
		nr_args = sc->fmt->nr_args;

	sc->arg_fmt = calloc(nr_args, sizeof(*sc->arg_fmt));
	if (sc->arg_fmt == NULL)
		return -1;

	for (idx = 0; idx < nr_args; ++idx) {
		if (sc->fmt)
			sc->arg_fmt[idx] = sc->fmt->arg[idx];
	}

	sc->nr_args = nr_args;
	return 0;
}

static struct syscall_arg_fmt syscall_arg_fmts__by_name[] = {
	{ .name = "msr",	.scnprintf = SCA_X86_MSR,	  .strtoul = STUL_X86_MSR,	   },
	{ .name = "vector",	.scnprintf = SCA_X86_IRQ_VECTORS, .strtoul = STUL_X86_IRQ_VECTORS, },
};

static int syscall_arg_fmt__cmp(const void *name, const void *fmtp)
{
       const struct syscall_arg_fmt *fmt = fmtp;
       return strcmp(name, fmt->name);
}

static struct syscall_arg_fmt *
__syscall_arg_fmt__find_by_name(struct syscall_arg_fmt *fmts, const int nmemb, const char *name)
{
       return bsearch(name, fmts, nmemb, sizeof(struct syscall_arg_fmt), syscall_arg_fmt__cmp);
}

static struct syscall_arg_fmt *syscall_arg_fmt__find_by_name(const char *name)
{
       const int nmemb = ARRAY_SIZE(syscall_arg_fmts__by_name);
       return __syscall_arg_fmt__find_by_name(syscall_arg_fmts__by_name, nmemb, name);
}

static struct tep_format_field *
syscall_arg_fmt__init_array(struct syscall_arg_fmt *arg, struct tep_format_field *field)
{
	struct tep_format_field *last_field = NULL;
	int len;

	for (; field; field = field->next, ++arg) {
		last_field = field;

		if (arg->scnprintf)
			continue;

		len = strlen(field->name);

		if (strcmp(field->type, "const char *") == 0 &&
		    ((len >= 4 && strcmp(field->name + len - 4, "name") == 0) ||
		     strstr(field->name, "path") != NULL))
			arg->scnprintf = SCA_FILENAME;
		else if ((field->flags & TEP_FIELD_IS_POINTER) || strstr(field->name, "addr"))
			arg->scnprintf = SCA_PTR;
		else if (strcmp(field->type, "pid_t") == 0)
			arg->scnprintf = SCA_PID;
		else if (strcmp(field->type, "umode_t") == 0)
			arg->scnprintf = SCA_MODE_T;
		else if ((field->flags & TEP_FIELD_IS_ARRAY) && strstr(field->type, "char")) {
			arg->scnprintf = SCA_CHAR_ARRAY;
			arg->nr_entries = field->arraylen;
		} else if ((strcmp(field->type, "int") == 0 ||
			  strcmp(field->type, "unsigned int") == 0 ||
			  strcmp(field->type, "long") == 0) &&
			 len >= 2 && strcmp(field->name + len - 2, "fd") == 0) {
			/*
			 * /sys/kernel/tracing/events/syscalls/sys_enter*
			 * egrep 'field:.*fd;' .../format|sed -r 's/.*field:([a-z ]+) [a-z_]*fd.+/\1/g'|sort|uniq -c
			 * 65 int
			 * 23 unsigned int
			 * 7 unsigned long
			 */
			arg->scnprintf = SCA_FD;
               } else {
			struct syscall_arg_fmt *fmt = syscall_arg_fmt__find_by_name(field->name);

			if (fmt) {
				arg->scnprintf = fmt->scnprintf;
				arg->strtoul   = fmt->strtoul;
			}
		}
	}

	return last_field;
}

static int syscall__set_arg_fmts(struct syscall *sc)
{
	struct tep_format_field *last_field = syscall_arg_fmt__init_array(sc->arg_fmt, sc->args);

	if (last_field)
		sc->args_size = last_field->offset + last_field->size;

	return 0;
}

static int trace__read_syscall_info(struct trace *trace, int id)
{
	char tp_name[128];
	struct syscall *sc;
	const char *name = syscalltbl__name(trace->sctbl, id);

#ifdef HAVE_SYSCALL_TABLE_SUPPORT
	if (trace->syscalls.table == NULL) {
		trace->syscalls.table = calloc(trace->sctbl->syscalls.max_id + 1, sizeof(*sc));
		if (trace->syscalls.table == NULL)
			return -ENOMEM;
	}
#else
	if (id > trace->sctbl->syscalls.max_id || (id == 0 && trace->syscalls.table == NULL)) {
		// When using libaudit we don't know beforehand what is the max syscall id
		struct syscall *table = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc));

		if (table == NULL)
			return -ENOMEM;

		// Need to memset from offset 0 and +1 members if brand new
		if (trace->syscalls.table == NULL)
			memset(table, 0, (id + 1) * sizeof(*sc));
		else
			memset(table + trace->sctbl->syscalls.max_id + 1, 0, (id - trace->sctbl->syscalls.max_id) * sizeof(*sc));

		trace->syscalls.table	      = table;
		trace->sctbl->syscalls.max_id = id;
	}
#endif
	sc = trace->syscalls.table + id;
	if (sc->nonexistent)
		return 0;

	if (name == NULL) {
		sc->nonexistent = true;
		return 0;
	}

	sc->name = name;
	sc->fmt  = syscall_fmt__find(sc->name);

	snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name);
	sc->tp_format = trace_event__tp_format("syscalls", tp_name);

	if (IS_ERR(sc->tp_format) && sc->fmt && sc->fmt->alias) {
		snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias);
		sc->tp_format = trace_event__tp_format("syscalls", tp_name);
	}

	if (syscall__alloc_arg_fmts(sc, IS_ERR(sc->tp_format) ? 6 : sc->tp_format->format.nr_fields))
		return -ENOMEM;

	if (IS_ERR(sc->tp_format))
		return PTR_ERR(sc->tp_format);

	sc->args = sc->tp_format->format.fields;
	/*
	 * We need to check and discard the first variable '__syscall_nr'
	 * or 'nr' that mean the syscall number. It is needless here.
	 * So drop '__syscall_nr' or 'nr' field but does not exist on older kernels.
	 */
	if (sc->args && (!strcmp(sc->args->name, "__syscall_nr") || !strcmp(sc->args->name, "nr"))) {
		sc->args = sc->args->next;
		--sc->nr_args;
	}

	sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit");
	sc->is_open = !strcmp(name, "open") || !strcmp(name, "openat");

	return syscall__set_arg_fmts(sc);
}

static int evsel__init_tp_arg_scnprintf(struct evsel *evsel)
{
	struct syscall_arg_fmt *fmt = evsel__syscall_arg_fmt(evsel);

	if (fmt != NULL) {
		syscall_arg_fmt__init_array(fmt, evsel->tp_format->format.fields);
		return 0;
	}

	return -ENOMEM;
}

static int intcmp(const void *a, const void *b)
{
	const int *one = a, *another = b;

	return *one - *another;
}

static int trace__validate_ev_qualifier(struct trace *trace)
{
	int err = 0;
	bool printed_invalid_prefix = false;
	struct str_node *pos;
	size_t nr_used = 0, nr_allocated = strlist__nr_entries(trace->ev_qualifier);

	trace->ev_qualifier_ids.entries = malloc(nr_allocated *
						 sizeof(trace->ev_qualifier_ids.entries[0]));

	if (trace->ev_qualifier_ids.entries == NULL) {
		fputs("Error:\tNot enough memory for allocating events qualifier ids\n",
		       trace->output);
		err = -EINVAL;
		goto out;
	}

	strlist__for_each_entry(pos, trace->ev_qualifier) {
		const char *sc = pos->s;
		int id = syscalltbl__id(trace->sctbl, sc), match_next = -1;

		if (id < 0) {
			id = syscalltbl__strglobmatch_first(trace->sctbl, sc, &match_next);
			if (id >= 0)
				goto matches;

			if (!printed_invalid_prefix) {
				pr_debug("Skipping unknown syscalls: ");
				printed_invalid_prefix = true;
			} else {
				pr_debug(", ");
			}

			pr_debug("%s", sc);
			continue;
		}
matches:
		trace->ev_qualifier_ids.entries[nr_used++] = id;
		if (match_next == -1)
			continue;

		while (1) {
			id = syscalltbl__strglobmatch_next(trace->sctbl, sc, &match_next);
			if (id < 0)
				break;
			if (nr_allocated == nr_used) {
				void *entries;

				nr_allocated += 8;
				entries = realloc(trace->ev_qualifier_ids.entries,
						  nr_allocated * sizeof(trace->ev_qualifier_ids.entries[0]));
				if (entries == NULL) {
					err = -ENOMEM;
					fputs("\nError:\t Not enough memory for parsing\n", trace->output);
					goto out_free;
				}
				trace->ev_qualifier_ids.entries = entries;
			}
			trace->ev_qualifier_ids.entries[nr_used++] = id;
		}
	}

	trace->ev_qualifier_ids.nr = nr_used;
	qsort(trace->ev_qualifier_ids.entries, nr_used, sizeof(int), intcmp);
out:
	if (printed_invalid_prefix)
		pr_debug("\n");
	return err;
out_free:
	zfree(&trace->ev_qualifier_ids.entries);
	trace->ev_qualifier_ids.nr = 0;
	goto out;
}

static __maybe_unused bool trace__syscall_enabled(struct trace *trace, int id)
{
	bool in_ev_qualifier;

	if (trace->ev_qualifier_ids.nr == 0)
		return true;

	in_ev_qualifier = bsearch(&id, trace->ev_qualifier_ids.entries,
				  trace->ev_qualifier_ids.nr, sizeof(int), intcmp) != NULL;

	if (in_ev_qualifier)
	       return !trace->not_ev_qualifier;

	return trace->not_ev_qualifier;
}

/*
 * args is to be interpreted as a series of longs but we need to handle
 * 8-byte unaligned accesses. args points to raw_data within the event
 * and raw_data is guaranteed to be 8-byte unaligned because it is
 * preceded by raw_size which is a u32. So we need to copy args to a temp
 * variable to read it. Most notably this avoids extended load instructions
 * on unaligned addresses
 */
unsigned long syscall_arg__val(struct syscall_arg *arg, u8 idx)
{
	unsigned long val;
	unsigned char *p = arg->args + sizeof(unsigned long) * idx;

	memcpy(&val, p, sizeof(val));
	return val;
}

static size_t syscall__scnprintf_name(struct syscall *sc, char *bf, size_t size,
				      struct syscall_arg *arg)
{
	if (sc->arg_fmt && sc->arg_fmt[arg->idx].name)
		return scnprintf(bf, size, "%s: ", sc->arg_fmt[arg->idx].name);

	return scnprintf(bf, size, "arg%d: ", arg->idx);
}

/*
 * Check if the value is in fact zero, i.e. mask whatever needs masking, such
 * as mount 'flags' argument that needs ignoring some magic flag, see comment
 * in tools/perf/trace/beauty/mount_flags.c
 */
static unsigned long syscall_arg_fmt__mask_val(struct syscall_arg_fmt *fmt, struct syscall_arg *arg, unsigned long val)
{
	if (fmt && fmt->mask_val)
		return fmt->mask_val(arg, val);

	return val;
}

static size_t syscall_arg_fmt__scnprintf_val(struct syscall_arg_fmt *fmt, char *bf, size_t size,
					     struct syscall_arg *arg, unsigned long val)
{
	if (fmt && fmt->scnprintf) {
		arg->val = val;
		if (fmt->parm)
			arg->parm = fmt->parm;
		return fmt->scnprintf(bf, size, arg);
	}
	return scnprintf(bf, size, "%ld", val);
}

static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
				      unsigned char *args, void *augmented_args, int augmented_args_size,
				      struct trace *trace, struct thread *thread)
{
	size_t printed = 0;
	unsigned long val;
	u8 bit = 1;
	struct syscall_arg arg = {
		.args	= args,
		.augmented = {
			.size = augmented_args_size,
			.args = augmented_args,
		},
		.idx	= 0,
		.mask	= 0,
		.trace  = trace,
		.thread = thread,
		.show_string_prefix = trace->show_string_prefix,
	};
	struct thread_trace *ttrace = thread__priv(thread);

	/*
	 * Things like fcntl will set this in its 'cmd' formatter to pick the
	 * right formatter for the return value (an fd? file flags?), which is
	 * not needed for syscalls that always return a given type, say an fd.
	 */
	ttrace->ret_scnprintf = NULL;

	if (sc->args != NULL) {
		struct tep_format_field *field;

		for (field = sc->args; field;
		     field = field->next, ++arg.idx, bit <<= 1) {
			if (arg.mask & bit)
				continue;

			arg.fmt = &sc->arg_fmt[arg.idx];
			val = syscall_arg__val(&arg, arg.idx);
			/*
			 * Some syscall args need some mask, most don't and
			 * return val untouched.
			 */
			val = syscall_arg_fmt__mask_val(&sc->arg_fmt[arg.idx], &arg, val);

			/*
 			 * Suppress this argument if its value is zero and
 			 * and we don't have a string associated in an
 			 * strarray for it.
 			 */
			if (val == 0 &&
			    !trace->show_zeros &&
			    !(sc->arg_fmt &&
			      (sc->arg_fmt[arg.idx].show_zero ||
			       sc->arg_fmt[arg.idx].scnprintf == SCA_STRARRAY ||
			       sc->arg_fmt[arg.idx].scnprintf == SCA_STRARRAYS) &&
			      sc->arg_fmt[arg.idx].parm))
				continue;

			printed += scnprintf(bf + printed, size - printed, "%s", printed ? ", " : "");

			if (trace->show_arg_names)
				printed += scnprintf(bf + printed, size - printed, "%s: ", field->name);

			printed += syscall_arg_fmt__scnprintf_val(&sc->arg_fmt[arg.idx],
								  bf + printed, size - printed, &arg, val);
		}
	} else if (IS_ERR(sc->tp_format)) {
		/*
		 * If we managed to read the tracepoint /format file, then we
		 * may end up not having any args, like with gettid(), so only
		 * print the raw args when we didn't manage to read it.
		 */
		while (arg.idx < sc->nr_args) {
			if (arg.mask & bit)
				goto next_arg;
			val = syscall_arg__val(&arg, arg.idx);
			if (printed)
				printed += scnprintf(bf + printed, size - printed, ", ");
			printed += syscall__scnprintf_name(sc, bf + printed, size - printed, &arg);
			printed += syscall_arg_fmt__scnprintf_val(&sc->arg_fmt[arg.idx], bf + printed, size - printed, &arg, val);
next_arg:
			++arg.idx;
			bit <<= 1;
		}
	}

	return printed;
}

typedef int (*tracepoint_handler)(struct trace *trace, struct evsel *evsel,
				  union perf_event *event,
				  struct perf_sample *sample);

static struct syscall *trace__syscall_info(struct trace *trace,
					   struct evsel *evsel, int id)
{
	int err = 0;

	if (id < 0) {

		/*
		 * XXX: Noticed on x86_64, reproduced as far back as 3.0.36, haven't tried
		 * before that, leaving at a higher verbosity level till that is
		 * explained. Reproduced with plain ftrace with:
		 *
		 * echo 1 > /t/events/raw_syscalls/sys_exit/enable
		 * grep "NR -1 " /t/trace_pipe
		 *
		 * After generating some load on the machine.
 		 */
		if (verbose > 1) {
			static u64 n;
			fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n",
				id, evsel__name(evsel), ++n);
		}
		return NULL;
	}

	err = -EINVAL;

#ifdef HAVE_SYSCALL_TABLE_SUPPORT
	if (id > trace->sctbl->syscalls.max_id) {
#else
	if (id >= trace->sctbl->syscalls.max_id) {
		/*
		 * With libaudit we don't know beforehand what is the max_id,
		 * so we let trace__read_syscall_info() figure that out as we
		 * go on reading syscalls.
		 */
		err = trace__read_syscall_info(trace, id);
		if (err)
#endif
		goto out_cant_read;
	}

	if ((trace->syscalls.table == NULL || trace->syscalls.table[id].name == NULL) &&
	    (err = trace__read_syscall_info(trace, id)) != 0)
		goto out_cant_read;

	if (trace->syscalls.table[id].name == NULL) {
		if (trace->syscalls.table[id].nonexistent)
			return NULL;
		goto out_cant_read;
	}

	return &trace->syscalls.table[id];

out_cant_read:
	if (verbose > 0) {
		char sbuf[STRERR_BUFSIZE];
		fprintf(trace->output, "Problems reading syscall %d: %d (%s)", id, -err, str_error_r(-err, sbuf, sizeof(sbuf)));
		if (id <= trace->sctbl->syscalls.max_id && trace->syscalls.table[id].name != NULL)
			fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
		fputs(" information\n", trace->output);
	}
	return NULL;
}

struct syscall_stats {
	struct stats stats;
	u64	     nr_failures;
	int	     max_errno;
	u32	     *errnos;
};

static void thread__update_stats(struct thread *thread, struct thread_trace *ttrace,
				 int id, struct perf_sample *sample, long err, bool errno_summary)
{
	struct int_node *inode;
	struct syscall_stats *stats;
	u64 duration = 0;

	inode = intlist__findnew(ttrace->syscall_stats, id);
	if (inode == NULL)
		return;

	stats = inode->priv;
	if (stats == NULL) {
		stats = malloc(sizeof(*stats));
		if (stats == NULL)
			return;

		stats->nr_failures = 0;
		stats->max_errno   = 0;
		stats->errnos	   = NULL;
		init_stats(&stats->stats);
		inode->priv = stats;
	}

	if (ttrace->entry_time && sample->time > ttrace->entry_time)
		duration = sample->time - ttrace->entry_time;

	update_stats(&stats->stats, duration);

	if (err < 0) {
		++stats->nr_failures;

		if (!errno_summary)
			return;

		err = -err;
		if (err > stats->max_errno) {
			u32 *new_errnos = realloc(stats->errnos, err * sizeof(u32));

			if (new_errnos) {
				memset(new_errnos + stats->max_errno, 0, (err - stats->max_errno) * sizeof(u32));
			} else {
				pr_debug("Not enough memory for errno stats for thread \"%s\"(%d/%d), results will be incomplete\n",
					 thread__comm_str(thread), thread->pid_, thread->tid);
				return;
			}

			stats->errnos = new_errnos;
			stats->max_errno = err;
		}

		++stats->errnos[err - 1];
	}
}

static int trace__printf_interrupted_entry(struct trace *trace)
{
	struct thread_trace *ttrace;
	size_t printed;
	int len;

	if (trace->failure_only || trace->current == NULL)
		return 0;

	ttrace = thread__priv(trace->current);

	if (!ttrace->entry_pending)
		return 0;

	printed  = trace__fprintf_entry_head(trace, trace->current, 0, false, ttrace->entry_time, trace->output);
	printed += len = fprintf(trace->output, "%s)", ttrace->entry_str);

	if (len < trace->args_alignment - 4)
		printed += fprintf(trace->output, "%-*s", trace->args_alignment - 4 - len, " ");

	printed += fprintf(trace->output, " ...\n");

	ttrace->entry_pending = false;
	++trace->nr_events_printed;

	return printed;
}

static int trace__fprintf_sample(struct trace *trace, struct evsel *evsel,
				 struct perf_sample *sample, struct thread *thread)
{
	int printed = 0;

	if (trace->print_sample) {
		double ts = (double)sample->time / NSEC_PER_MSEC;

		printed += fprintf(trace->output, "%22s %10.3f %s %d/%d [%d]\n",
				   evsel__name(evsel), ts,
				   thread__comm_str(thread),
				   sample->pid, sample->tid, sample->cpu);
	}

	return printed;
}

static void *syscall__augmented_args(struct syscall *sc, struct perf_sample *sample, int *augmented_args_size, int raw_augmented_args_size)
{
	void *augmented_args = NULL;
	/*
	 * For now with BPF raw_augmented we hook into raw_syscalls:sys_enter
	 * and there we get all 6 syscall args plus the tracepoint common fields
	 * that gets calculated at the start and the syscall_nr (another long).
	 * So we check if that is the case and if so don't look after the
	 * sc->args_size but always after the full raw_syscalls:sys_enter payload,
	 * which is fixed.
	 *
	 * We'll revisit this later to pass s->args_size to the BPF augmenter
	 * (now tools/perf/examples/bpf/augmented_raw_syscalls.c, so that it
	 * copies only what we need for each syscall, like what happens when we
	 * use syscalls:sys_enter_NAME, so that we reduce the kernel/userspace
	 * traffic to just what is needed for each syscall.
	 */
	int args_size = raw_augmented_args_size ?: sc->args_size;

	*augmented_args_size = sample->raw_size - args_size;
	if (*augmented_args_size > 0)
		augmented_args = sample->raw_data + args_size;

	return augmented_args;
}

static int trace__sys_enter(struct trace *trace, struct evsel *evsel,
			    union perf_event *event __maybe_unused,
			    struct perf_sample *sample)
{
	char *msg;
	void *args;
	int printed = 0;
	struct thread *thread;
	int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
	int augmented_args_size = 0;
	void *augmented_args = NULL;
	struct syscall *sc = trace__syscall_info(trace, evsel, id);
	struct thread_trace *ttrace;

	if (sc == NULL)
		return -1;

	thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
	ttrace = thread__trace(thread, trace->output);
	if (ttrace == NULL)
		goto out_put;

	trace__fprintf_sample(trace, evsel, sample, thread);

	args = perf_evsel__sc_tp_ptr(evsel, args, sample);

	if (ttrace->entry_str == NULL) {
		ttrace->entry_str = malloc(trace__entry_str_size);
		if (!ttrace->entry_str)
			goto out_put;
	}

	if (!(trace->duration_filter || trace->summary_only || trace->min_stack))
		trace__printf_interrupted_entry(trace);
	/*
	 * If this is raw_syscalls.sys_enter, then it always comes with the 6 possible
	 * arguments, even if the syscall being handled, say "openat", uses only 4 arguments
	 * this breaks syscall__augmented_args() check for augmented args, as we calculate
	 * syscall->args_size using each syscalls:sys_enter_NAME tracefs format file,
	 * so when handling, say the openat syscall, we end up getting 6 args for the
	 * raw_syscalls:sys_enter event, when we expected just 4, we end up mistakenly
	 * thinking that the extra 2 u64 args are the augmented filename, so just check
	 * here and avoid using augmented syscalls when the evsel is the raw_syscalls one.
	 */
	if (evsel != trace->syscalls.events.sys_enter)
		augmented_args = syscall__augmented_args(sc, sample, &augmented_args_size, trace->raw_augmented_syscalls_args_size);
	ttrace->entry_time = sample->time;
	msg = ttrace->entry_str;
	printed += scnprintf(msg + printed, trace__entry_str_size - printed, "%s(", sc->name);

	printed += syscall__scnprintf_args(sc, msg + printed, trace__entry_str_size - printed,
					   args, augmented_args, augmented_args_size, trace, thread);

	if (sc->is_exit) {
		if (!(trace->duration_filter || trace->summary_only || trace->failure_only || trace->min_stack)) {
			int alignment = 0;

			trace__fprintf_entry_head(trace, thread, 0, false, ttrace->entry_time, trace->output);
			printed = fprintf(trace->output, "%s)", ttrace->entry_str);
			if (trace->args_alignment > printed)
				alignment = trace->args_alignment - printed;
			fprintf(trace->output, "%*s= ?\n", alignment, " ");
		}
	} else {
		ttrace->entry_pending = true;
		/* See trace__vfs_getname & trace__sys_exit */
		ttrace->filename.pending_open = false;
	}

	if (trace->current != thread) {
		thread__put(trace->current);
		trace->current = thread__get(thread);
	}
	err = 0;
out_put:
	thread__put(thread);
	return err;
}

static int trace__fprintf_sys_enter(struct trace *trace, struct evsel *evsel,
				    struct perf_sample *sample)
{
	struct thread_trace *ttrace;
	struct thread *thread;
	int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
	struct syscall *sc = trace__syscall_info(trace, evsel, id);
	char msg[1024];
	void *args, *augmented_args = NULL;
	int augmented_args_size;

	if (sc == NULL)
		return -1;

	thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
	ttrace = thread__trace(thread, trace->output);
	/*
	 * We need to get ttrace just to make sure it is there when syscall__scnprintf_args()
	 * and the rest of the beautifiers accessing it via struct syscall_arg touches it.
	 */
	if (ttrace == NULL)
		goto out_put;

	args = perf_evsel__sc_tp_ptr(evsel, args, sample);
	augmented_args = syscall__augmented_args(sc, sample, &augmented_args_size, trace->raw_augmented_syscalls_args_size);
	syscall__scnprintf_args(sc, msg, sizeof(msg), args, augmented_args, augmented_args_size, trace, thread);
	fprintf(trace->output, "%s", msg);
	err = 0;
out_put:
	thread__put(thread);
	return err;
}

static int trace__resolve_callchain(struct trace *trace, struct evsel *evsel,
				    struct perf_sample *sample,
				    struct callchain_cursor *cursor)
{
	struct addr_location al;
	int max_stack = evsel->core.attr.sample_max_stack ?
			evsel->core.attr.sample_max_stack :
			trace->max_stack;
	int err;

	if (machine__resolve(trace->host, &al, sample) < 0)
		return -1;

	err = thread__resolve_callchain(al.thread, cursor, evsel, sample, NULL, NULL, max_stack);
	addr_location__put(&al);
	return err;
}

static int trace__fprintf_callchain(struct trace *trace, struct perf_sample *sample)
{
	/* TODO: user-configurable print_opts */
	const unsigned int print_opts = EVSEL__PRINT_SYM |
				        EVSEL__PRINT_DSO |
				        EVSEL__PRINT_UNKNOWN_AS_ADDR;

	return sample__fprintf_callchain(sample, 38, print_opts, &callchain_cursor, symbol_conf.bt_stop_list, trace->output);
}

static const char *errno_to_name(struct evsel *evsel, int err)
{
	struct perf_env *env = evsel__env(evsel);
	const char *arch_name = perf_env__arch(env);

	return arch_syscalls__strerrno(arch_name, err);
}

static int trace__sys_exit(struct trace *trace, struct evsel *evsel,
			   union perf_event *event __maybe_unused,
			   struct perf_sample *sample)
{
	long ret;
	u64 duration = 0;
	bool duration_calculated = false;
	struct thread *thread;
	int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1, callchain_ret = 0, printed = 0;
	int alignment = trace->args_alignment;
	struct syscall *sc = trace__syscall_info(trace, evsel, id);
	struct thread_trace *ttrace;

	if (sc == NULL)
		return -1;

	thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
	ttrace = thread__trace(thread, trace->output);
	if (ttrace == NULL)
		goto out_put;

	trace__fprintf_sample(trace, evsel, sample, thread);

	ret = perf_evsel__sc_tp_uint(evsel, ret, sample);

	if (trace->summary)
		thread__update_stats(thread, ttrace, id, sample, ret, trace->errno_summary);

	if (!trace->fd_path_disabled && sc->is_open && ret >= 0 && ttrace->filename.pending_open) {
		trace__set_fd_pathname(thread, ret, ttrace->filename.name);
		ttrace->filename.pending_open = false;
		++trace->stats.vfs_getname;
	}

	if (ttrace->entry_time) {
		duration = sample->time - ttrace->entry_time;
		if (trace__filter_duration(trace, duration))
			goto out;
		duration_calculated = true;
	} else if (trace->duration_filter)
		goto out;

	if (sample->callchain) {
		callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
		if (callchain_ret == 0) {
			if (callchain_cursor.nr < trace->min_stack)
				goto out;
			callchain_ret = 1;
		}
	}

	if (trace->summary_only || (ret >= 0 && trace->failure_only))
		goto out;

	trace__fprintf_entry_head(trace, thread, duration, duration_calculated, ttrace->entry_time, trace->output);

	if (ttrace->entry_pending) {
		printed = fprintf(trace->output, "%s", ttrace->entry_str);
	} else {
		printed += fprintf(trace->output, " ... [");
		color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued");
		printed += 9;
		printed += fprintf(trace->output, "]: %s()", sc->name);
	}

	printed++; /* the closing ')' */

	if (alignment > printed)
		alignment -= printed;
	else
		alignment = 0;

	fprintf(trace->output, ")%*s= ", alignment, " ");

	if (sc->fmt == NULL) {
		if (ret < 0)
			goto errno_print;
signed_print:
		fprintf(trace->output, "%ld", ret);
	} else if (ret < 0) {
errno_print: {
		char bf[STRERR_BUFSIZE];
		const char *emsg = str_error_r(-ret, bf, sizeof(bf)),
			   *e = errno_to_name(evsel, -ret);

		fprintf(trace->output, "-1 %s (%s)", e, emsg);
	}
	} else if (ret == 0 && sc->fmt->timeout)
		fprintf(trace->output, "0 (Timeout)");
	else if (ttrace->ret_scnprintf) {
		char bf[1024];
		struct syscall_arg arg = {
			.val	= ret,
			.thread	= thread,
			.trace	= trace,
		};
		ttrace->ret_scnprintf(bf, sizeof(bf), &arg);
		ttrace->ret_scnprintf = NULL;
		fprintf(trace->output, "%s", bf);
	} else if (sc->fmt->hexret)
		fprintf(trace->output, "%#lx", ret);
	else if (sc->fmt->errpid) {
		struct thread *child = machine__find_thread(trace->host, ret, ret);

		if (child != NULL) {
			fprintf(trace->output, "%ld", ret);
			if (child->comm_set)
				fprintf(trace->output, " (%s)", thread__comm_str(child));
			thread__put(child);
		}
	} else
		goto signed_print;

	fputc('\n', trace->output);

	/*
	 * We only consider an 'event' for the sake of --max-events a non-filtered
	 * sys_enter + sys_exit and other tracepoint events.
	 */
	if (++trace->nr_events_printed == trace->max_events && trace->max_events != ULONG_MAX)
		interrupted = true;

	if (callchain_ret > 0)
		trace__fprintf_callchain(trace, sample);
	else if (callchain_ret < 0)
		pr_err("Problem processing %s callchain, skipping...\n", evsel__name(evsel));
out:
	ttrace->entry_pending = false;
	err = 0;
out_put:
	thread__put(thread);
	return err;
}

static int trace__vfs_getname(struct trace *trace, struct evsel *evsel,
			      union perf_event *event __maybe_unused,
			      struct perf_sample *sample)
{
	struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
	struct thread_trace *ttrace;
	size_t filename_len, entry_str_len, to_move;
	ssize_t remaining_space;
	char *pos;
	const char *filename = evsel__rawptr(evsel, sample, "pathname");

	if (!thread)
		goto out;

	ttrace = thread__priv(thread);
	if (!ttrace)
		goto out_put;

	filename_len = strlen(filename);
	if (filename_len == 0)
		goto out_put;

	if (ttrace->filename.namelen < filename_len) {
		char *f = realloc(ttrace->filename.name, filename_len + 1);

		if (f == NULL)
			goto out_put;

		ttrace->filename.namelen = filename_len;
		ttrace->filename.name = f;
	}

	strcpy(ttrace->filename.name, filename);
	ttrace->filename.pending_open = true;

	if (!ttrace->filename.ptr)
		goto out_put;

	entry_str_len = strlen(ttrace->entry_str);
	remaining_space = trace__entry_str_size - entry_str_len - 1; /* \0 */
	if (remaining_space <= 0)
		goto out_put;

	if (filename_len > (size_t)remaining_space) {
		filename += filename_len - remaining_space;
		filename_len = remaining_space;
	}

	to_move = entry_str_len - ttrace->filename.entry_str_pos + 1; /* \0 */
	pos = ttrace->entry_str + ttrace->filename.entry_str_pos;
	memmove(pos + filename_len, pos, to_move);
	memcpy(pos, filename, filename_len);

	ttrace->filename.ptr = 0;
	ttrace->filename.entry_str_pos = 0;
out_put:
	thread__put(thread);
out:
	return 0;
}

static int trace__sched_stat_runtime(struct trace *trace, struct evsel *evsel,
				     union perf_event *event __maybe_unused,
				     struct perf_sample *sample)
{
        u64 runtime = evsel__intval(evsel, sample, "runtime");
	double runtime_ms = (double)runtime / NSEC_PER_MSEC;
	struct thread *thread = machine__findnew_thread(trace->host,
							sample->pid,
							sample->tid);
	struct thread_trace *ttrace = thread__trace(thread, trace->output);

	if (ttrace == NULL)
		goto out_dump;

	ttrace->runtime_ms += runtime_ms;
	trace->runtime_ms += runtime_ms;
out_put:
	thread__put(thread);
	return 0;

out_dump:
	fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
	       evsel->name,
	       evsel__strval(evsel, sample, "comm"),
	       (pid_t)evsel__intval(evsel, sample, "pid"),
	       runtime,
	       evsel__intval(evsel, sample, "vruntime"));
	goto out_put;
}

static int bpf_output__printer(enum binary_printer_ops op,
			       unsigned int val, void *extra __maybe_unused, FILE *fp)
{
	unsigned char ch = (unsigned char)val;

	switch (op) {
	case BINARY_PRINT_CHAR_DATA:
		return fprintf(fp, "%c", isprint(ch) ? ch : '.');
	case BINARY_PRINT_DATA_BEGIN:
	case BINARY_PRINT_LINE_BEGIN:
	case BINARY_PRINT_ADDR:
	case BINARY_PRINT_NUM_DATA:
	case BINARY_PRINT_NUM_PAD:
	case BINARY_PRINT_SEP:
	case BINARY_PRINT_CHAR_PAD:
	case BINARY_PRINT_LINE_END:
	case BINARY_PRINT_DATA_END:
	default:
		break;
	}

	return 0;
}

static void bpf_output__fprintf(struct trace *trace,
				struct perf_sample *sample)
{
	binary__fprintf(sample->raw_data, sample->raw_size, 8,
			bpf_output__printer, NULL, trace->output);
	++trace->nr_events_printed;
}

static size_t trace__fprintf_tp_fields(struct trace *trace, struct evsel *evsel, struct perf_sample *sample,
				       struct thread *thread, void *augmented_args, int augmented_args_size)
{
	char bf[2048];
	size_t size = sizeof(bf);
	struct tep_format_field *field = evsel->tp_format->format.fields;
	struct syscall_arg_fmt *arg = __evsel__syscall_arg_fmt(evsel);
	size_t printed = 0;
	unsigned long val;
	u8 bit = 1;
	struct syscall_arg syscall_arg = {
		.augmented = {
			.size = augmented_args_size,
			.args = augmented_args,
		},
		.idx	= 0,
		.mask	= 0,
		.trace  = trace,
		.thread = thread,
		.show_string_prefix = trace->show_string_prefix,
	};

	for (; field && arg; field = field->next, ++syscall_arg.idx, bit <<= 1, ++arg) {
		if (syscall_arg.mask & bit)
			continue;

		syscall_arg.len = 0;
		syscall_arg.fmt = arg;
		if (field->flags & TEP_FIELD_IS_ARRAY) {
			int offset = field->offset;

			if (field->flags & TEP_FIELD_IS_DYNAMIC) {
				offset = format_field__intval(field, sample, evsel->needs_swap);
				syscall_arg.len = offset >> 16;
				offset &= 0xffff;
			}

			val = (uintptr_t)(sample->raw_data + offset);
		} else
			val = format_field__intval(field, sample, evsel->needs_swap);
		/*
		 * Some syscall args need some mask, most don't and
		 * return val untouched.
		 */
		val = syscall_arg_fmt__mask_val(arg, &syscall_arg, val);

		/*
		 * Suppress this argument if its value is zero and
		 * and we don't have a string associated in an
		 * strarray for it.
		 */
		if (val == 0 &&
		    !trace->show_zeros &&
		    !((arg->show_zero ||
		       arg->scnprintf == SCA_STRARRAY ||
		       arg->scnprintf == SCA_STRARRAYS) &&
		      arg->parm))
			continue;

		printed += scnprintf(bf + printed, size - printed, "%s", printed ? ", " : "");

		/*
		 * XXX Perhaps we should have a show_tp_arg_names,
		 * leaving show_arg_names just for syscalls?
		 */
		if (1 || trace->show_arg_names)
			printed += scnprintf(bf + printed, size - printed, "%s: ", field->name);

		printed += syscall_arg_fmt__scnprintf_val(arg, bf + printed, size - printed, &syscall_arg, val);
	}

	return printed + fprintf(trace->output, "%s", bf);
}

static int trace__event_handler(struct trace *trace, struct evsel *evsel,
				union perf_event *event __maybe_unused,
				struct perf_sample *sample)
{
	struct thread *thread;
	int callchain_ret = 0;
	/*
	 * Check if we called perf_evsel__disable(evsel) due to, for instance,
	 * this event's max_events having been hit and this is an entry coming
	 * from the ring buffer that we should discard, since the max events
	 * have already been considered/printed.
	 */
	if (evsel->disabled)
		return 0;

	thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);

	if (sample->callchain) {
		callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
		if (callchain_ret == 0) {
			if (callchain_cursor.nr < trace->min_stack)
				goto out;
			callchain_ret = 1;
		}
	}

	trace__printf_interrupted_entry(trace);
	trace__fprintf_tstamp(trace, sample->time, trace->output);

	if (trace->trace_syscalls && trace->show_duration)
		fprintf(trace->output, "(         ): ");

	if (thread)
		trace__fprintf_comm_tid(trace, thread, trace->output);

	if (evsel == trace->syscalls.events.augmented) {
		int id = perf_evsel__sc_tp_uint(evsel, id, sample);
		struct syscall *sc = trace__syscall_info(trace, evsel, id);

		if (sc) {
			fprintf(trace->output, "%s(", sc->name);
			trace__fprintf_sys_enter(trace, evsel, sample);
			fputc(')', trace->output);
			goto newline;
		}

		/*
		 * XXX: Not having the associated syscall info or not finding/adding
		 * 	the thread should never happen, but if it does...
		 * 	fall thru and print it as a bpf_output event.
		 */
	}

	fprintf(trace->output, "%s(", evsel->name);

	if (evsel__is_bpf_output(evsel)) {
		bpf_output__fprintf(trace, sample);
	} else if (evsel->tp_format) {
		if (strncmp(evsel->tp_format->name, "sys_enter_", 10) ||
		    trace__fprintf_sys_enter(trace, evsel, sample)) {
			if (trace->libtraceevent_print) {
				event_format__fprintf(evsel->tp_format, sample->cpu,
						      sample->raw_data, sample->raw_size,
						      trace->output);
			} else {
				trace__fprintf_tp_fields(trace, evsel, sample, thread, NULL, 0);
			}
		}
	}

newline:
	fprintf(trace->output, ")\n");

	if (callchain_ret > 0)
		trace__fprintf_callchain(trace, sample);
	else if (callchain_ret < 0)
		pr_err("Problem processing %s callchain, skipping...\n", evsel__name(evsel));

	++trace->nr_events_printed;

	if (evsel->max_events != ULONG_MAX && ++evsel->nr_events_printed == evsel->max_events) {
		evsel__disable(evsel);
		evsel__close(evsel);
	}
out:
	thread__put(thread);
	return 0;
}

static void print_location(FILE *f, struct perf_sample *sample,
			   struct addr_location *al,
			   bool print_dso, bool print_sym)
{

	if ((verbose > 0 || print_dso) && al->map)
		fprintf(f, "%s@", al->map->dso->long_name);

	if ((verbose > 0 || print_sym) && al->sym)
		fprintf(f, "%s+0x%" PRIx64, al->sym->name,
			al->addr - al->sym->start);
	else if (al->map)
		fprintf(f, "0x%" PRIx64, al->addr);
	else
		fprintf(f, "0x%" PRIx64, sample->addr);
}

static int trace__pgfault(struct trace *trace,
			  struct evsel *evsel,
			  union perf_event *event __maybe_unused,
			  struct perf_sample *sample)
{
	struct thread *thread;
	struct addr_location al;
	char map_type = 'd';
	struct thread_trace *ttrace;
	int err = -1;
	int callchain_ret = 0;

	thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);

	if (sample->callchain) {
		callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
		if (callchain_ret == 0) {
			if (callchain_cursor.nr < trace->min_stack)
				goto out_put;
			callchain_ret = 1;
		}
	}

	ttrace = thread__trace(thread, trace->output);
	if (ttrace == NULL)
		goto out_put;

	if (evsel->core.attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)
		ttrace->pfmaj++;
	else
		ttrace->pfmin++;

	if (trace->summary_only)
		goto out;

	thread__find_symbol(thread, sample->cpumode, sample->ip, &al);

	trace__fprintf_entry_head(trace, thread, 0, true, sample->time, trace->output);

	fprintf(trace->output, "%sfault [",
		evsel->core.attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ?
		"maj" : "min");

	print_location(trace->output, sample, &al, false, true);

	fprintf(trace->output, "] => ");

	thread__find_symbol(thread, sample->cpumode, sample->addr, &al);

	if (!al.map) {
		thread__find_symbol(thread, sample->cpumode, sample->addr, &al);

		if (al.map)
			map_type = 'x';
		else
			map_type = '?';
	}

	print_location(trace->output, sample, &al, true, false);

	fprintf(trace->output, " (%c%c)\n", map_type, al.level);

	if (callchain_ret > 0)
		trace__fprintf_callchain(trace, sample);
	else if (callchain_ret < 0)
		pr_err("Problem processing %s callchain, skipping...\n", evsel__name(evsel));

	++trace->nr_events_printed;
out:
	err = 0;
out_put:
	thread__put(thread);
	return err;
}

static void trace__set_base_time(struct trace *trace,
				 struct evsel *evsel,
				 struct perf_sample *sample)
{
	/*
	 * BPF events were not setting PERF_SAMPLE_TIME, so be more robust
	 * and don't use sample->time unconditionally, we may end up having
	 * some other event in the future without PERF_SAMPLE_TIME for good
	 * reason, i.e. we may not be interested in its timestamps, just in
	 * it taking place, picking some piece of information when it
	 * appears in our event stream (vfs_getname comes to mind).
	 */
	if (trace->base_time == 0 && !trace->full_time &&
	    (evsel->core.attr.sample_type & PERF_SAMPLE_TIME))
		trace->base_time = sample->time;
}

static int trace__process_sample(struct perf_tool *tool,
				 union perf_event *event,
				 struct perf_sample *sample,
				 struct evsel *evsel,
				 struct machine *machine __maybe_unused)
{
	struct trace *trace = container_of(tool, struct trace, tool);
	struct thread *thread;
	int err = 0;

	tracepoint_handler handler = evsel->handler;

	thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
	if (thread && thread__is_filtered(thread))
		goto out;

	trace__set_base_time(trace, evsel, sample);

	if (handler) {
		++trace->nr_events;
		handler(trace, evsel, event, sample);
	}
out:
	thread__put(thread);
	return err;
}

static int trace__record(struct trace *trace, int argc, const char **argv)
{
	unsigned int rec_argc, i, j;
	const char **rec_argv;
	const char * const record_args[] = {
		"record",
		"-R",
		"-m", "1024",
		"-c", "1",
	};
	pid_t pid = getpid();
	char *filter = asprintf__tp_filter_pids(1, &pid);
	const char * const sc_args[] = { "-e", };
	unsigned int sc_args_nr = ARRAY_SIZE(sc_args);
	const char * const majpf_args[] = { "-e", "major-faults" };
	unsigned int majpf_args_nr = ARRAY_SIZE(majpf_args);
	const char * const minpf_args[] = { "-e", "minor-faults" };
	unsigned int minpf_args_nr = ARRAY_SIZE(minpf_args);
	int err = -1;

	/* +3 is for the event string below and the pid filter */
	rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 3 +
		majpf_args_nr + minpf_args_nr + argc;
	rec_argv = calloc(rec_argc + 1, sizeof(char *));

	if (rec_argv == NULL || filter == NULL)
		goto out_free;

	j = 0;
	for (i = 0; i < ARRAY_SIZE(record_args); i++)
		rec_argv[j++] = record_args[i];

	if (trace->trace_syscalls) {
		for (i = 0; i < sc_args_nr; i++)
			rec_argv[j++] = sc_args[i];

		/* event string may be different for older kernels - e.g., RHEL6 */
		if (is_valid_tracepoint("raw_syscalls:sys_enter"))
			rec_argv[j++] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit";
		else if (is_valid_tracepoint("syscalls:sys_enter"))
			rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit";
		else {
			pr_err("Neither raw_syscalls nor syscalls events exist.\n");
			goto out_free;
		}
	}

	rec_argv[j++] = "--filter";
	rec_argv[j++] = filter;

	if (trace->trace_pgfaults & TRACE_PFMAJ)
		for (i = 0; i < majpf_args_nr; i++)
			rec_argv[j++] = majpf_args[i];

	if (trace->trace_pgfaults & TRACE_PFMIN)
		for (i = 0; i < minpf_args_nr; i++)
			rec_argv[j++] = minpf_args[i];

	for (i = 0; i < (unsigned int)argc; i++)
		rec_argv[j++] = argv[i];

	err = cmd_record(j, rec_argv);
out_free:
	free(filter);
	free(rec_argv);
	return err;
}

static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp);

static bool evlist__add_vfs_getname(struct evlist *evlist)
{
	bool found = false;
	struct evsel *evsel, *tmp;
	struct parse_events_error err;
	int ret;

	bzero(&err, sizeof(err));
	ret = parse_events(evlist, "probe:vfs_getname*", &err);
	if (ret) {
		free(err.str);
		free(err.help);
		free(err.first_str);
		free(err.first_help);
		return false;
	}

	evlist__for_each_entry_safe(evlist, evsel, tmp) {
		if (!strstarts(evsel__name(evsel), "probe:vfs_getname"))
			continue;

		if (evsel__field(evsel, "pathname")) {
			evsel->handler = trace__vfs_getname;
			found = true;
			continue;
		}

		list_del_init(&evsel->core.node);
		evsel->evlist = NULL;
		evsel__delete(evsel);
	}

	return found;
}

static struct evsel *evsel__new_pgfault(u64 config)
{
	struct evsel *evsel;
	struct perf_event_attr attr = {
		.type = PERF_TYPE_SOFTWARE,
		.mmap_data = 1,
	};

	attr.config = config;
	attr.sample_period = 1;

	event_attr_init(&attr);

	evsel = evsel__new(&attr);
	if (evsel)
		evsel->handler = trace__pgfault;

	return evsel;
}

static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample)
{
	const u32 type = event->header.type;
	struct evsel *evsel;

	if (type != PERF_RECORD_SAMPLE) {
		trace__process_event(trace, trace->host, event, sample);
		return;
	}

	evsel = perf_evlist__id2evsel(trace->evlist, sample->id);
	if (evsel == NULL) {
		fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample->id);
		return;
	}

	if (evswitch__discard(&trace->evswitch, evsel))
		return;

	trace__set_base_time(trace, evsel, sample);

	if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT &&
	    sample->raw_data == NULL) {
		fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
		       evsel__name(evsel), sample->tid,
		       sample->cpu, sample->raw_size);
	} else {
		tracepoint_handler handler = evsel->handler;
		handler(trace, evsel, event, sample);
	}

	if (trace->nr_events_printed >= trace->max_events && trace->max_events != ULONG_MAX)
		interrupted = true;
}

static int trace__add_syscall_newtp(struct trace *trace)
{
	int ret = -1;
	struct evlist *evlist = trace->evlist;
	struct evsel *sys_enter, *sys_exit;

	sys_enter = perf_evsel__raw_syscall_newtp("sys_enter", trace__sys_enter);
	if (sys_enter == NULL)
		goto out;

	if (perf_evsel__init_sc_tp_ptr_field(sys_enter, args))
		goto out_delete_sys_enter;

	sys_exit = perf_evsel__raw_syscall_newtp("sys_exit", trace__sys_exit);
	if (sys_exit == NULL)
		goto out_delete_sys_enter;

	if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret))
		goto out_delete_sys_exit;

	evsel__config_callchain(sys_enter, &trace->opts, &callchain_param);
	evsel__config_callchain(sys_exit, &trace->opts, &callchain_param);

	evlist__add(evlist, sys_enter);
	evlist__add(evlist, sys_exit);

	if (callchain_param.enabled && !trace->kernel_syscallchains) {
		/*
		 * We're interested only in the user space callchain
		 * leading to the syscall, allow overriding that for
		 * debugging reasons using --kernel_syscall_callchains
		 */
		sys_exit->core.attr.exclude_callchain_kernel = 1;
	}

	trace->syscalls.events.sys_enter = sys_enter;
	trace->syscalls.events.sys_exit  = sys_exit;

	ret = 0;
out:
	return ret;

out_delete_sys_exit:
	evsel__delete_priv(sys_exit);
out_delete_sys_enter:
	evsel__delete_priv(sys_enter);
	goto out;
}

static int trace__set_ev_qualifier_tp_filter(struct trace *trace)
{
	int err = -1;
	struct evsel *sys_exit;
	char *filter = asprintf_expr_inout_ints("id", !trace->not_ev_qualifier,
						trace->ev_qualifier_ids.nr,
						trace->ev_qualifier_ids.entries);

	if (filter == NULL)
		goto out_enomem;

	if (!evsel__append_tp_filter(trace->syscalls.events.sys_enter, filter)) {
		sys_exit = trace->syscalls.events.sys_exit;
		err = evsel__append_tp_filter(sys_exit, filter);
	}

	free(filter);
out:
	return err;
out_enomem:
	errno = ENOMEM;
	goto out;
}

#ifdef HAVE_LIBBPF_SUPPORT
static struct bpf_map *trace__find_bpf_map_by_name(struct trace *trace, const char *name)
{
	if (trace->bpf_obj == NULL)
		return NULL;

	return bpf_object__find_map_by_name(trace->bpf_obj, name);
}

static void trace__set_bpf_map_filtered_pids(struct trace *trace)
{
	trace->filter_pids.map = trace__find_bpf_map_by_name(trace, "pids_filtered");
}

static void trace__set_bpf_map_syscalls(struct trace *trace)
{
	trace->syscalls.map = trace__find_bpf_map_by_name(trace, "syscalls");
	trace->syscalls.prog_array.sys_enter = trace__find_bpf_map_by_name(trace, "syscalls_sys_enter");
	trace->syscalls.prog_array.sys_exit  = trace__find_bpf_map_by_name(trace, "syscalls_sys_exit");
}

static struct bpf_program *trace__find_bpf_program_by_title(struct trace *trace, const char *name)
{
	if (trace->bpf_obj == NULL)
		return NULL;

	return bpf_object__find_program_by_title(trace->bpf_obj, name);
}

static struct bpf_program *trace__find_syscall_bpf_prog(struct trace *trace, struct syscall *sc,
							const char *prog_name, const char *type)
{
	struct bpf_program *prog;

	if (prog_name == NULL) {
		char default_prog_name[256];
		scnprintf(default_prog_name, sizeof(default_prog_name), "!syscalls:sys_%s_%s", type, sc->name);
		prog = trace__find_bpf_program_by_title(trace, default_prog_name);
		if (prog != NULL)
			goto out_found;
		if (sc->fmt && sc->fmt->alias) {
			scnprintf(default_prog_name, sizeof(default_prog_name), "!syscalls:sys_%s_%s", type, sc->fmt->alias);
			prog = trace__find_bpf_program_by_title(trace, default_prog_name);
			if (prog != NULL)
				goto out_found;
		}
		goto out_unaugmented;
	}

	prog = trace__find_bpf_program_by_title(trace, prog_name);

	if (prog != NULL) {
out_found:
		return prog;
	}

	pr_debug("Couldn't find BPF prog \"%s\" to associate with syscalls:sys_%s_%s, not augmenting it\n",
		 prog_name, type, sc->name);
out_unaugmented:
	return trace->syscalls.unaugmented_prog;
}

static void trace__init_syscall_bpf_progs(struct trace *trace, int id)
{
	struct syscall *sc = trace__syscall_info(trace, NULL, id);

	if (sc == NULL)
		return;

	sc->bpf_prog.sys_enter = trace__find_syscall_bpf_prog(trace, sc, sc->fmt ? sc->fmt->bpf_prog_name.sys_enter : NULL, "enter");
	sc->bpf_prog.sys_exit  = trace__find_syscall_bpf_prog(trace, sc, sc->fmt ? sc->fmt->bpf_prog_name.sys_exit  : NULL,  "exit");
}

static int trace__bpf_prog_sys_enter_fd(struct trace *trace, int id)
{
	struct syscall *sc = trace__syscall_info(trace, NULL, id);
	return sc ? bpf_program__fd(sc->bpf_prog.sys_enter) : bpf_program__fd(trace->syscalls.unaugmented_prog);
}

static int trace__bpf_prog_sys_exit_fd(struct trace *trace, int id)
{
	struct syscall *sc = trace__syscall_info(trace, NULL, id);
	return sc ? bpf_program__fd(sc->bpf_prog.sys_exit) : bpf_program__fd(trace->syscalls.unaugmented_prog);
}

static void trace__init_bpf_map_syscall_args(struct trace *trace, int id, struct bpf_map_syscall_entry *entry)
{
	struct syscall *sc = trace__syscall_info(trace, NULL, id);
	int arg = 0;

	if (sc == NULL)
		goto out;

	for (; arg < sc->nr_args; ++arg) {
		entry->string_args_len[arg] = 0;
		if (sc->arg_fmt[arg].scnprintf == SCA_FILENAME) {
			/* Should be set like strace -s strsize */
			entry->string_args_len[arg] = PATH_MAX;
		}
	}
out:
	for (; arg < 6; ++arg)
		entry->string_args_len[arg] = 0;
}
static int trace__set_ev_qualifier_bpf_filter(struct trace *trace)
{
	int fd = bpf_map__fd(trace->syscalls.map);
	struct bpf_map_syscall_entry value = {
		.enabled = !trace->not_ev_qualifier,
	};
	int err = 0;
	size_t i;

	for (i = 0; i < trace->ev_qualifier_ids.nr; ++i) {
		int key = trace->ev_qualifier_ids.entries[i];

		if (value.enabled) {
			trace__init_bpf_map_syscall_args(trace, key, &value);
			trace__init_syscall_bpf_progs(trace, key);
		}

		err = bpf_map_update_elem(fd, &key, &value, BPF_EXIST);
		if (err)
			break;
	}

	return err;
}

static int __trace__init_syscalls_bpf_map(struct trace *trace, bool enabled)
{
	int fd = bpf_map__fd(trace->syscalls.map);
	struct bpf_map_syscall_entry value = {
		.enabled = enabled,
	};
	int err = 0, key;

	for (key = 0; key < trace->sctbl->syscalls.nr_entries; ++key) {
		if (enabled)
			trace__init_bpf_map_syscall_args(trace, key, &value);

		err = bpf_map_update_elem(fd, &key, &value, BPF_ANY);
		if (err)
			break;
	}

	return err;
}

static int trace__init_syscalls_bpf_map(struct trace *trace)
{
	bool enabled = true;

	if (trace->ev_qualifier_ids.nr)
		enabled = trace->not_ev_qualifier;

	return __trace__init_syscalls_bpf_map(trace, enabled);
}

static struct bpf_program *trace__find_usable_bpf_prog_entry(struct trace *trace, struct syscall *sc)
{
	struct tep_format_field *field, *candidate_field;
	int id;

	/*
	 * We're only interested in syscalls that have a pointer:
	 */
	for (field = sc->args; field; field = field->next) {
		if (field->flags & TEP_FIELD_IS_POINTER)
			goto try_to_find_pair;
	}

	return NULL;

try_to_find_pair:
	for (id = 0; id < trace->sctbl->syscalls.nr_entries; ++id) {
		struct syscall *pair = trace__syscall_info(trace, NULL, id);
		struct bpf_program *pair_prog;
		bool is_candidate = false;

		if (pair == NULL || pair == sc ||
		    pair->bpf_prog.sys_enter == trace->syscalls.unaugmented_prog)
			continue;

		for (field = sc->args, candidate_field = pair->args;
		     field && candidate_field; field = field->next, candidate_field = candidate_field->next) {
			bool is_pointer = field->flags & TEP_FIELD_IS_POINTER,
			     candidate_is_pointer = candidate_field->flags & TEP_FIELD_IS_POINTER;

			if (is_pointer) {
			       if (!candidate_is_pointer) {
					// The candidate just doesn't copies our pointer arg, might copy other pointers we want.
					continue;
			       }
			} else {
				if (candidate_is_pointer) {
					// The candidate might copy a pointer we don't have, skip it.
					goto next_candidate;
				}
				continue;
			}

			if (strcmp(field->type, candidate_field->type))
				goto next_candidate;

			is_candidate = true;
		}

		if (!is_candidate)
			goto next_candidate;

		/*
		 * Check if the tentative pair syscall augmenter has more pointers, if it has,
		 * then it may be collecting that and we then can't use it, as it would collect
		 * more than what is common to the two syscalls.
		 */
		if (candidate_field) {
			for (candidate_field = candidate_field->next; candidate_field; candidate_field = candidate_field->next)
				if (candidate_field->flags & TEP_FIELD_IS_POINTER)
					goto next_candidate;
		}

		pair_prog = pair->bpf_prog.sys_enter;
		/*
		 * If the pair isn't enabled, then its bpf_prog.sys_enter will not
		 * have been searched for, so search it here and if it returns the
		 * unaugmented one, then ignore it, otherwise we'll reuse that BPF
		 * program for a filtered syscall on a non-filtered one.
		 *
		 * For instance, we have "!syscalls:sys_enter_renameat" and that is
		 * useful for "renameat2".
		 */
		if (pair_prog == NULL) {
			pair_prog = trace__find_syscall_bpf_prog(trace, pair, pair->fmt ? pair->fmt->bpf_prog_name.sys_enter : NULL, "enter");
			if (pair_prog == trace->syscalls.unaugmented_prog)
				goto next_candidate;
		}

		pr_debug("Reusing \"%s\" BPF sys_enter augmenter for \"%s\"\n", pair->name, sc->name);
		return pair_prog;
	next_candidate:
		continue;
	}

	return NULL;
}

static int trace__init_syscalls_bpf_prog_array_maps(struct trace *trace)
{
	int map_enter_fd = bpf_map__fd(trace->syscalls.prog_array.sys_enter),
	    map_exit_fd  = bpf_map__fd(trace->syscalls.prog_array.sys_exit);
	int err = 0, key;

	for (key = 0; key < trace->sctbl->syscalls.nr_entries; ++key) {
		int prog_fd;

		if (!trace__syscall_enabled(trace, key))
			continue;

		trace__init_syscall_bpf_progs(trace, key);

		// It'll get at least the "!raw_syscalls:unaugmented"
		prog_fd = trace__bpf_prog_sys_enter_fd(trace, key);
		err = bpf_map_update_elem(map_enter_fd, &key, &prog_fd, BPF_ANY);
		if (err)
			break;
		prog_fd = trace__bpf_prog_sys_exit_fd(trace, key);
		err = bpf_map_update_elem(map_exit_fd, &key, &prog_fd, BPF_ANY);
		if (err)
			break;
	}

	/*
	 * Now lets do a second pass looking for enabled syscalls without
	 * an augmenter that have a signature that is a superset of another
	 * syscall with an augmenter so that we can auto-reuse it.
	 *
	 * I.e. if we have an augmenter for the "open" syscall that has
	 * this signature:
	 *
	 *   int open(const char *pathname, int flags, mode_t mode);
	 *
	 * I.e. that will collect just the first string argument, then we
	 * can reuse it for the 'creat' syscall, that has this signature:
	 *
	 *   int creat(const char *pathname, mode_t mode);
	 *
	 * and for:
	 *
	 *   int stat(const char *pathname, struct stat *statbuf);
	 *   int lstat(const char *pathname, struct stat *statbuf);
	 *
	 * Because the 'open' augmenter will collect the first arg as a string,
	 * and leave alone all the other args, which already helps with
	 * beautifying 'stat' and 'lstat''s pathname arg.
	 *
	 * Then, in time, when 'stat' gets an augmenter that collects both
	 * first and second arg (this one on the raw_syscalls:sys_exit prog
	 * array tail call, then that one will be used.
	 */
	for (key = 0; key < trace->sctbl->syscalls.nr_entries; ++key) {
		struct syscall *sc = trace__syscall_info(trace, NULL, key);
		struct bpf_program *pair_prog;
		int prog_fd;

		if (sc == NULL || sc->bpf_prog.sys_enter == NULL)
			continue;

		/*
		 * For now we're just reusing the sys_enter prog, and if it
		 * already has an augmenter, we don't need to find one.
		 */
		if (sc->bpf_prog.sys_enter != trace->syscalls.unaugmented_prog)
			continue;

		/*
		 * Look at all the other syscalls for one that has a signature
		 * that is close enough that we can share:
		 */
		pair_prog = trace__find_usable_bpf_prog_entry(trace, sc);
		if (pair_prog == NULL)
			continue;

		sc->bpf_prog.sys_enter = pair_prog;

		/*
		 * Update the BPF_MAP_TYPE_PROG_SHARED for raw_syscalls:sys_enter
		 * with the fd for the program we're reusing:
		 */
		prog_fd = bpf_program__fd(sc->bpf_prog.sys_enter);
		err = bpf_map_update_elem(map_enter_fd, &key, &prog_fd, BPF_ANY);
		if (err)
			break;
	}


	return err;
}

static void trace__delete_augmented_syscalls(struct trace *trace)
{
	struct evsel *evsel, *tmp;

	evlist__remove(trace->evlist, trace->syscalls.events.augmented);
	evsel__delete(trace->syscalls.events.augmented);
	trace->syscalls.events.augmented = NULL;

	evlist__for_each_entry_safe(trace->evlist, tmp, evsel) {
		if (evsel->bpf_obj == trace->bpf_obj) {
			evlist__remove(trace->evlist, evsel);
			evsel__delete(evsel);
		}

	}

	bpf_object__close(trace->bpf_obj);
	trace->bpf_obj = NULL;
}
#else // HAVE_LIBBPF_SUPPORT
static struct bpf_map *trace__find_bpf_map_by_name(struct trace *trace __maybe_unused,
						   const char *name __maybe_unused)
{
	return NULL;
}

static void trace__set_bpf_map_filtered_pids(struct trace *trace __maybe_unused)
{
}

static void trace__set_bpf_map_syscalls(struct trace *trace __maybe_unused)
{
}

static int trace__set_ev_qualifier_bpf_filter(struct trace *trace __maybe_unused)
{
	return 0;
}

static int trace__init_syscalls_bpf_map(struct trace *trace __maybe_unused)
{
	return 0;
}

static struct bpf_program *trace__find_bpf_program_by_title(struct trace *trace __maybe_unused,
							    const char *name __maybe_unused)
{
	return NULL;
}

static int trace__init_syscalls_bpf_prog_array_maps(struct trace *trace __maybe_unused)
{
	return 0;
}

static void trace__delete_augmented_syscalls(struct trace *trace __maybe_unused)
{
}
#endif // HAVE_LIBBPF_SUPPORT

static bool trace__only_augmented_syscalls_evsels(struct trace *trace)
{
	struct evsel *evsel;

	evlist__for_each_entry(trace->evlist, evsel) {
		if (evsel == trace->syscalls.events.augmented ||
		    evsel->bpf_obj == trace->bpf_obj)
			continue;

		return false;
	}

	return true;
}

static int trace__set_ev_qualifier_filter(struct trace *trace)
{
	if (trace->syscalls.map)
		return trace__set_ev_qualifier_bpf_filter(trace);
	if (trace->syscalls.events.sys_enter)
		return trace__set_ev_qualifier_tp_filter(trace);
	return 0;
}

static int bpf_map__set_filter_pids(struct bpf_map *map __maybe_unused,
				    size_t npids __maybe_unused, pid_t *pids __maybe_unused)
{
	int err = 0;
#ifdef HAVE_LIBBPF_SUPPORT
	bool value = true;
	int map_fd = bpf_map__fd(map);
	size_t i;

	for (i = 0; i < npids; ++i) {
		err = bpf_map_update_elem(map_fd, &pids[i], &value, BPF_ANY);
		if (err)
			break;
	}
#endif
	return err;
}

static int trace__set_filter_loop_pids(struct trace *trace)
{
	unsigned int nr = 1, err;
	pid_t pids[32] = {
		getpid(),
	};
	struct thread *thread = machine__find_thread(trace->host, pids[0], pids[0]);

	while (thread && nr < ARRAY_SIZE(pids)) {
		struct thread *parent = machine__find_thread(trace->host, thread->ppid, thread->ppid);

		if (parent == NULL)
			break;

		if (!strcmp(thread__comm_str(parent), "sshd") ||
		    strstarts(thread__comm_str(parent), "gnome-terminal")) {
			pids[nr++] = parent->tid;
			break;
		}
		thread = parent;
	}

	err = evlist__append_tp_filter_pids(trace->evlist, nr, pids);
	if (!err && trace->filter_pids.map)
		err = bpf_map__set_filter_pids(trace->filter_pids.map, nr, pids);

	return err;
}

static int trace__set_filter_pids(struct trace *trace)
{
	int err = 0;
	/*
	 * Better not use !target__has_task() here because we need to cover the
	 * case where no threads were specified in the command line, but a
	 * workload was, and in that case we will fill in the thread_map when
	 * we fork the workload in evlist__prepare_workload.
	 */
	if (trace->filter_pids.nr > 0) {
		err = evlist__append_tp_filter_pids(trace->evlist, trace->filter_pids.nr,
						    trace->filter_pids.entries);
		if (!err && trace->filter_pids.map) {
			err = bpf_map__set_filter_pids(trace->filter_pids.map, trace->filter_pids.nr,
						       trace->filter_pids.entries);
		}
	} else if (perf_thread_map__pid(trace->evlist->core.threads, 0) == -1) {
		err = trace__set_filter_loop_pids(trace);
	}

	return err;
}

static int __trace__deliver_event(struct trace *trace, union perf_event *event)
{
	struct evlist *evlist = trace->evlist;
	struct perf_sample sample;
	int err = evlist__parse_sample(evlist, event, &sample);

	if (err)
		fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err);
	else
		trace__handle_event(trace, event, &sample);

	return 0;
}

static int __trace__flush_events(struct trace *trace)
{