]> git.karo-electronics.de Git - karo-tx-linux.git/commit
perf tools: Add attr->mmap2 support
authorStephane Eranian <eranian@google.com>
Wed, 21 Aug 2013 10:10:25 +0000 (12:10 +0200)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 11 Sep 2013 13:09:32 +0000 (10:09 -0300)
commit5c5e854bc760a2e2c878df3cfcf2afa4febcd511
treecc0c44e8d8d9804f30c90f067d08c6cb4c9565ac
parente71aa28312b208a14cd87fa61e941ac8c85072f4
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>
17 files changed:
tools/perf/builtin-annotate.c
tools/perf/builtin-inject.c
tools/perf/builtin-mem.c
tools/perf/builtin-report.c
tools/perf/builtin-script.c
tools/perf/tests/perf-record.c
tools/perf/util/build-id.c
tools/perf/util/event.c
tools/perf/util/event.h
tools/perf/util/evsel.c
tools/perf/util/header.c
tools/perf/util/machine.c
tools/perf/util/machine.h
tools/perf/util/map.c
tools/perf/util/map.h
tools/perf/util/session.c
tools/perf/util/tool.h