path: root/tools/perf/builtin-mem.c
diff options
authorStephane Eranian <>2013-08-21 12:10:25 +0200
committerArnaldo Carvalho de Melo <>2013-09-11 10:09:32 -0300
commit5c5e854bc760a2e2c878df3cfcf2afa4febcd511 (patch)
treecc0c44e8d8d9804f30c90f067d08c6cb4c9565ac /tools/perf/builtin-mem.c
parente71aa28312b208a14cd87fa61e941ac8c85072f4 (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 <> Cc: Andi Kleen <> Cc: David Ahern <> Cc: Ingo Molnar <> Cc: Jiri Olsa <> Cc: Namhyung Kim <> Cc: Peter Zijlstra <> Link: [ 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 <>
Diffstat (limited to 'tools/perf/builtin-mem.c')
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,