From 5c5e854bc760a2e2c878df3cfcf2afa4febcd511 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Wed, 21 Aug 2013 12:10:25 +0200 Subject: 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: 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 --- tools/perf/util/map.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'tools/perf/util/map.c') diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 9e8304ca343e..4f6680d2043b 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -48,7 +48,8 @@ void map__init(struct map *map, enum map_type type, } struct map *map__new(struct list_head *dsos__list, u64 start, u64 len, - u64 pgoff, u32 pid, char *filename, + u64 pgoff, u32 pid, u32 d_maj, u32 d_min, u64 ino, + u64 ino_gen, char *filename, enum map_type type) { struct map *map = malloc(sizeof(*map)); @@ -62,6 +63,11 @@ struct map *map__new(struct list_head *dsos__list, u64 start, u64 len, vdso = is_vdso_map(filename); no_dso = is_no_dso_memory(filename); + map->maj = d_maj; + map->min = d_min; + map->ino = ino; + map->ino_generation = ino_gen; + if (anon) { snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", pid); filename = newfilename; -- cgit v1.2.3