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2015-02-13perf trace: Handle multiple threads better wrt syscalls being intermixedArnaldo Carvalho de Melo1-0/+28
$ trace time taskset -c 0 usleep 1 0.845 ( 0.021 ms): time/16722 wait4(upid: 4294967295, stat_addr: 0x7fff17f443d4, ru: 0x7fff17f44438 ) ... 0.865 ( 0.008 ms): time/16723 execve(arg0: 140733595272004, arg1: 140733595272720, arg2: 140733595272768, arg3: 139755107218496, arg4: 7307199665339051828, arg5: 3) = -2 2.395 ( 1.523 ms): taskset/16723 execve(arg0: 140733595272013, arg1: 140733595272720, arg2: 140733595272768, arg3: 139755107218496, arg4: 7307199665339051828, arg5: 3) = 0 2.411 ( 0.002 ms): taskset/16723 brk( ) = 0x1915000 3.300 ( 0.058 ms): usleep/16723 nanosleep(rqtp: 0x7ffff4ada190 ) = 0 <SNIP> 3.305 ( 0.000 ms): usleep/16723 exit_group( 3.363 ( 2.539 ms): time/16722 ... [continued]: wait4()) = 16723 3.366 ( 0.001 ms): time/16722 rt_sigaction(sig: INT, act: 0x7fff17f44160, oact: 0x7fff17f44200, sigsetsize: 8) = 0 We we're not seeing this line: 0.845 ( 0.021 ms): time/16722 wait4(upid: 4294967295, stat_addr: 0x7fff17f443d4, ru: 0x7fff17f44438 ) ... just the one when it finishes: 3.363 ( 2.539 ms): time/16722 ... [continued]: wait4()) = 16723 Still some issues left till we move to ordered_samples when multiple CPUs/threads are involved... Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-zq9x30a1ky3djqewqn2v3ja3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-13perf trace: Print thread info when following childrenArnaldo Carvalho de Melo1-1/+3
The default for 'trace workload' is to set perf_event_attr.inherit to 1, i.e. to make it equivalent to 'strace -f workload', so we were ending with syscalls for multiple processes mixed up, fix it: Before: [root@ssdandy ~]# trace -e brk time usleep 1 0.071 ( 0.002 ms): brk( ) = 0x100e000 0.802 ( 0.001 ms): brk( ) = 0x1d99000 1.132 ( 0.003 ms): brk( ) = 0x1d99000 1.136 ( 0.003 ms): brk(brk: 0x1dba000) = 0x1dba000 1.140 ( 0.001 ms): brk( ) = 0x1dba000 0.00user 0.00system 0:00.00elapsed 63%CPU (0avgtext+0avgdata 528maxresident)k 0inputs+0outputs (0major+181minor)pagefaults 0swaps [root@ssdandy ~]# After: [root@ssdandy ~]# trace -f -e brk time usleep 1 0.072 ( 0.002 ms): time/26308 brk( ) = 0x1e6e000 0.860 ( 0.001 ms): usleep/26309 brk( ) = 0xb91000 1.193 ( 0.003 ms): usleep/26309 brk( ) = 0xb91000 1.197 ( 0.003 ms): usleep/26309 brk(brk: 0xbb2000) = 0xbb2000 1.201 ( 0.001 ms): usleep/26309 brk( ) = 0xbb2000 0.00user 0.00system 0:00.00elapsed 0%CPU (0avgtext+0avgdata 524maxresident)k 0inputs+0outputs (0major+180minor)pagefaults 0swaps [root@ssdandy ~]# BTW: to achieve the 'strace workload' behaviour, i.e. without a explicit '-f', one has to use --no-inherit. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> echo Link: http://lkml.kernel.org/n/tip-`ranpwd -l 24`@git.kernel.org Link: http://lkml.kernel.org/n/tip-2wu2d5n65msxoq1i7vtcaft2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-13perf list: Place the header text in its right positionYunlong Song2-5/+3
The hearer text 'List of pre-defined events (to be used in -e):' is placed in an improper function, which causes an abnormal output, e.g. 'perf list hw' shows no guiding text at all, and 'perf list hw L1-dcache*' shows the guiding text incorrectly in the middle of the output. Example Before this patch: $ perf list hw L1-dcache* branch-instructions OR branches [Hardware event] branch-misses [Hardware event] bus-cycles [Hardware event] cache-misses [Hardware event] cache-references [Hardware event] cpu-cycles OR cycles [Hardware event] instructions [Hardware event] stalled-cycles-backend OR idle-cycles-backend [Hardware event] stalled-cycles-frontend OR idle-cycles-frontend [Hardware event] List of pre-defined events (to be used in -e): <-- incorrect position L1-dcache-load-misses [Hardware cache event] L1-dcache-loads [Hardware cache event] L1-dcache-prefetch-misses [Hardware cache event] L1-dcache-prefetches [Hardware cache event] L1-dcache-store-misses [Hardware cache event] L1-dcache-stores [Hardware cache event] After this patch: $ perf list hw L1-dcache* List of pre-defined events (to be used in -e): <-- correct position branch-instructions OR branches [Hardware event] branch-misses [Hardware event] bus-cycles [Hardware event] cache-misses [Hardware event] cache-references [Hardware event] cpu-cycles OR cycles [Hardware event] instructions [Hardware event] stalled-cycles-backend OR idle-cycles-backend [Hardware event] stalled-cycles-frontend OR idle-cycles-frontend [Hardware event] L1-dcache-load-misses [Hardware cache event] L1-dcache-loads [Hardware cache event] L1-dcache-prefetch-misses [Hardware cache event] L1-dcache-prefetches [Hardware cache event] L1-dcache-store-misses [Hardware cache event] L1-dcache-stores [Hardware cache event] Signed-off-by: Yunlong Song <yunlong.song@huawei.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1423833115-11199-8-git-send-email-yunlong.song@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-13perf: Remove the extra validity check on nr_pagesKaixu Xia1-1/+1
The function is_power_of_2() also do the check on nr_pages, so the first check performed is unnecessary. On the other hand, the key point is to ensure @nr_pages is a power-of-two number and mostly @nr_pages is a nonzero value, so in the most cases, the function is_power_of_2() will be called. Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Link: http://lkml.kernel.org/r/1422352512-75150-1-git-send-email-xiakaixu@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-13perf tools: Fix a bug of segmentation faultYunlong Song1-2/+4
Fix the 'segmentation fault' bug of 'perf list --list-cmds', which also happens in other cases (e.g. record, report ...). This bug happens when there are no cmds to list at all. Example: Before this patch: $ perf list --list-cmds Segmentation fault $ After this patch: $ perf list --list-cmds $ As shown above, the result prints nothing rather than a segmentation fault. The null result means 'perf list' has no cmds to display at this time. Signed-off-by: Yunlong Song <yunlong.song@huawei.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1423833115-11199-5-git-send-email-yunlong.song@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-12perf build: Display make commands on V=1Jiri Olsa2-22/+30
Get more verbose output wrt displaying executed commands from make. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Tested-by: Will Deacon <will.deacon@arm.com> Cc: Alexis Berlemont <alexis.berlemont@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-68v67h59zoz7ilb1ggcuff3j@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-12tools lib lockdep: Use tools build frameworkJiri Olsa2-109/+24
Move the lockdep library building under tools build framework. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexis Berlemont <alexis.berlemont@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: S. Lockwood-Childs <sjl@vctlabs.com> Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-i0t25buqyo5jfvzpw2347h1h@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-12tools lib traceevent: Use tools build frameworkJiri Olsa3-132/+65
Move the libtraceevent library building under tools build framework. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Tested-by: Will Deacon <will.deacon@arm.com> Cc: Alexis Berlemont <alexis.berlemont@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/n/tip-opvx59tcawlmm916lg4aff4h@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-12tools lib api: Rename libapikfs.a to libapi.aJiri Olsa6-21/+21
Renaming libapikfs.a to libapi.a, because it's not just 'fs' specific library now. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Tested-by: Will Deacon <will.deacon@arm.com> Cc: Alexis Berlemont <alexis.berlemont@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-g1mk5oj2ayq4vn653ovfg3gv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-02-12tools lib api: Use tools build frameworkJiri Olsa5-46/+35
Move the libapikfs library building under tools build framework. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Tested-by: Will Deacon <will.deacon@arm.com> Cc: Alexis Berlemont <alexis.berlemont@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-xjo8r7nuqy9mvlfrmx9zcfwb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>