path: root/tools/perf/builtin-inject.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-inject.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-inject.c')
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 9b336fdb6f71..423875c999b2 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -123,6 +123,19 @@ static int perf_event__repipe_mmap(struct perf_tool *tool,
return err;
+static int perf_event__repipe_mmap2(struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct machine *machine)
+ int err;
+ err = perf_event__process_mmap2(tool, event, sample, machine);
+ perf_event__repipe(tool, event, sample, machine);
+ return err;
static int perf_event__repipe_fork(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
@@ -339,6 +352,7 @@ static int __cmd_inject(struct perf_inject *inject)
if (inject->build_ids || inject->sched_stat) {
inject->tool.mmap = perf_event__repipe_mmap;
+ inject->tool.mmap2 = perf_event__repipe_mmap2;
inject->tool.fork = perf_event__repipe_fork;
inject->tool.tracing_data = perf_event__repipe_tracing_data;
@@ -390,6 +404,7 @@ int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused)
.tool = {
.sample = perf_event__repipe_sample,
.mmap = perf_event__repipe,
+ .mmap2 = perf_event__repipe,
.comm = perf_event__repipe,
.fork = perf_event__repipe,
.exit = perf_event__repipe,