libperf: Adopt perf_mmap__consume() function from tools/perf

Move perf_mmap__consume() vrom tools/perf to libperf and export it in
the perf/mmap.h header.

Move also the needed helpers perf_mmap__write_tail(),
perf_mmap__read_head() and perf_mmap__empty().

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20191007125344.14268-10-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

10 files changed, 18 insertions, 8 deletions

diff --git a/tools/perf/tests/backward-ring-buffer.c b/tools/perf/tests/backward-ring-buffer.c
index 338cd9faa835..13f9a060361a 100644
--- a/tools/perf/tests/backward-ring-buffer.c
+++ b/tools/perf/tests/backward-ring-buffer.c
@@ -13,6 +13,7 @@
 #include "util/mmap.h"
 #include <errno.h>
 #include <linux/string.h>
+#include <perf/mmap.h>
 
 #define NR_ITERS 111
 
diff --git a/tools/perf/tests/bpf.c b/tools/perf/tests/bpf.c
index 1eb0bffaed6c..6f0d239f8277 100644
--- a/tools/perf/tests/bpf.c
+++ b/tools/perf/tests/bpf.c
@@ -15,6 +15,7 @@
 #include <linux/string.h>
 #include <api/fs/fs.h>
 #include <bpf/bpf.h>
+#include <perf/mmap.h>
 #include "tests.h"
 #include "llvm.h"
 #include "debug.h"
diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
index f5764a3890b9..b5a57bb54c25 100644
--- a/tools/perf/tests/code-reading.c
+++ b/tools/perf/tests/code-reading.c
@@ -10,6 +10,7 @@
 #include <sys/param.h>
 #include <perf/cpumap.h>
 #include <perf/evlist.h>
+#include <perf/mmap.h>
 
 #include "debug.h"
 #include "dso.h"
@@ -430,7 +431,7 @@ static int process_events(struct machine *machine, struct evlist *evlist,
 
 		while ((event = perf_mmap__read_event(md)) != NULL) {
 			ret = process_event(machine, evlist, event, state);
-			perf_mmap__consume(md);
+			perf_mmap__consume(&md->core);
 			if (ret < 0)
 				return ret;
 		}
diff --git a/tools/perf/tests/keep-tracking.c b/tools/perf/tests/keep-tracking.c
index 92c7d591bcac..31c005e07b17 100644
--- a/tools/perf/tests/keep-tracking.c
+++ b/tools/perf/tests/keep-tracking.c
@@ -5,6 +5,7 @@
 #include <sys/prctl.h>
 #include <perf/cpumap.h>
 #include <perf/evlist.h>
+#include <perf/mmap.h>
 
 #include "debug.h"
 #include "parse-events.h"
@@ -46,7 +47,7 @@ static int find_comm(struct evlist *evlist, const char *comm)
 			    (pid_t)event->comm.tid == getpid() &&
 			    strcmp(event->comm.comm, comm) == 0)
 				found += 1;
-			perf_mmap__consume(md);
+			perf_mmap__consume(&md->core);
 		}
 		perf_mmap__read_done(md);
 	}
diff --git a/tools/perf/tests/mmap-basic.c b/tools/perf/tests/mmap-basic.c
index 3a22dce991ba..b176acc4f52e 100644
--- a/tools/perf/tests/mmap-basic.c
+++ b/tools/perf/tests/mmap-basic.c
@@ -16,6 +16,7 @@
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <perf/evlist.h>
+#include <perf/mmap.h>
 
 /*
  * This test will generate random numbers of calls to some getpid syscalls,
@@ -139,7 +140,7 @@ int test__basic_mmap(struct test *test __maybe_unused, int subtest __maybe_unuse
 			goto out_delete_evlist;
 		}
 		nr_events[evsel->idx]++;
-		perf_mmap__consume(md);
+		perf_mmap__consume(&md->core);
 	}
 	perf_mmap__read_done(md);
 
diff --git a/tools/perf/tests/openat-syscall-tp-fields.c b/tools/perf/tests/openat-syscall-tp-fields.c
index 2b5c46813053..bbf8ba320721 100644
--- a/tools/perf/tests/openat-syscall-tp-fields.c
+++ b/tools/perf/tests/openat-syscall-tp-fields.c
@@ -13,6 +13,7 @@
 #include "debug.h"
 #include "util/mmap.h"
 #include <errno.h>
+#include <perf/mmap.h>
 
 #ifndef O_DIRECTORY
 #define O_DIRECTORY    00200000
@@ -103,7 +104,7 @@ int test__syscall_openat_tp_fields(struct test *test __maybe_unused, int subtest
 				++nr_events;
 
 				if (type != PERF_RECORD_SAMPLE) {
-					perf_mmap__consume(md);
+					perf_mmap__consume(&md->core);
 					continue;
 				}
 
diff --git a/tools/perf/tests/perf-record.c b/tools/perf/tests/perf-record.c
index 437426be29e9..6ebbcc65749e 100644
--- a/tools/perf/tests/perf-record.c
+++ b/tools/perf/tests/perf-record.c
@@ -6,6 +6,7 @@
 #include <pthread.h>
 
 #include <sched.h>
+#include <perf/mmap.h>
 #include "evlist.h"
 #include "evsel.h"
 #include "debug.h"
@@ -276,7 +277,7 @@ int test__PERF_RECORD(struct test *test __maybe_unused, int subtest __maybe_unus
 					++errs;
 				}
 
-				perf_mmap__consume(md);
+				perf_mmap__consume(&md->core);
 			}
 			perf_mmap__read_done(md);
 		}
diff --git a/tools/perf/tests/sw-clock.c b/tools/perf/tests/sw-clock.c
index 84519df87f30..1aeb558010c1 100644
--- a/tools/perf/tests/sw-clock.c
+++ b/tools/perf/tests/sw-clock.c
@@ -15,6 +15,7 @@
 #include "util/mmap.h"
 #include "util/thread_map.h"
 #include <perf/evlist.h>
+#include <perf/mmap.h>
 
 #define NR_LOOPS  10000000
 
@@ -117,7 +118,7 @@ static int __test__sw_clock_freq(enum perf_sw_ids clock_id)
 		total_periods += sample.period;
 		nr_samples++;
 next_event:
-		perf_mmap__consume(md);
+		perf_mmap__consume(&md->core);
 	}
 	perf_mmap__read_done(md);
 
diff --git a/tools/perf/tests/switch-tracking.c b/tools/perf/tests/switch-tracking.c
index ffa592e0020e..55728b3da057 100644
--- a/tools/perf/tests/switch-tracking.c
+++ b/tools/perf/tests/switch-tracking.c
@@ -8,6 +8,7 @@
 #include <linux/zalloc.h>
 #include <perf/cpumap.h>
 #include <perf/evlist.h>
+#include <perf/mmap.h>
 
 #include "debug.h"
 #include "parse-events.h"
@@ -275,7 +276,7 @@ static int process_events(struct evlist *evlist,
 		while ((event = perf_mmap__read_event(md)) != NULL) {
 			cnt += 1;
 			ret = add_event(evlist, &events, event);
-			 perf_mmap__consume(md);
+			 perf_mmap__consume(&md->core);
 			if (ret < 0)
 				goto out_free_nodes;
 		}
diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c
index bce3a4cb4c89..a0f689594848 100644
--- a/tools/perf/tests/task-exit.c
+++ b/tools/perf/tests/task-exit.c
@@ -12,6 +12,7 @@
 #include <linux/string.h>
 #include <perf/cpumap.h>
 #include <perf/evlist.h>
+#include <perf/mmap.h>
 
 static int exited;
 static int nr_exit;
@@ -124,7 +125,7 @@ retry:
 		if (event->header.type == PERF_RECORD_EXIT)
 			nr_exit++;
 
-		perf_mmap__consume(md);
+		perf_mmap__consume(&md->core);
 	}
 	perf_mmap__read_done(md);