diff options
| author | Stephane Eranian <eranian@google.com> | 2013-08-21 12:10:25 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-09-11 10:09:32 -0300 |
| commit | 5c5e854bc760a2e2c878df3cfcf2afa4febcd511 (patch) | |
| tree | cc0c44e8d8d9804f30c90f067d08c6cb4c9565ac /tools/perf/builtin-mem.c | |
| parent | e71aa28312b208a14cd87fa61e941ac8c85072f4 (diff) | |
perf tools: Add attr->mmap2 support
This patch adds support for the new PERF_RECORD_MMAP2 record type
exposed by the kernel. This is an extended PERF_RECORD_MMAP record.
It adds for each file-backed mapping the device major, minor number and
the inode number and generation.
This triplet uniquely identifies the source of a file-backed mapping. It
can be used to detect identical virtual mappings between processes, for
instance.
The patch will prefer MMAP2 over MMAP.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1377079825-19057-3-git-send-email-eranian@google.com
[ Cope with 314add6 "Change machine__findnew_thread() to set thread pid",
fix 'perf test' regression test entry affected,
use perf_missing_features.mmap2 to fallback to not using .mmap2 in older kernels,
so that new tools can work with kernels where this feature is not present ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-mem.c')
| -rw-r--r-- | tools/perf/builtin-mem.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c index 791b432df847..253133a6251d 100644 --- a/tools/perf/builtin-mem.c +++ b/tools/perf/builtin-mem.c @@ -190,6 +190,7 @@ int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused) .tool = { .sample = process_sample_event, .mmap = perf_event__process_mmap, + .mmap2 = perf_event__process_mmap2, .comm = perf_event__process_comm, .lost = perf_event__process_lost, .fork = perf_event__process_fork, |