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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-01-13 16:22:17 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-01-13 17:39:43 +0100 |
| commit | b7cece76783c68fb391f9882235b4b0c9c300c46 (patch) | |
| tree | 8a0224493acc3cf74c218384a3b76b3e47c131a2 /tools/perf/util/thread.h | |
| parent | perf: Make cmd_to_page() function more compact (diff) | |
| download | linux-b7cece76783c68fb391f9882235b4b0c9c300c46.tar.xz linux-b7cece76783c68fb391f9882235b4b0c9c300c46.zip | |
perf tools: Encode kernel module mappings in perf.data
We were always looking at the running machine /proc/modules,
even when processing a perf.data file, which only makes sense
when we're doing 'perf record' and 'perf report' on the same
machine, and in close sucession, or if we don't use modules at
all, right Peter? ;-)
Now, at 'perf record' time we read /proc/modules, find the long
path for modules, and put them as PERF_MMAP events, just like we
did to encode the reloc reference symbol for vmlinux. Talking
about that now it is encoded in .pgoff, so that we can use
.{start,len} to store the address boundaries for the kernel so
that when we reconstruct the kmaps tree we can do lookups right
away, without having to fixup the end of the kernel maps like we
did in the past (and now only in perf record).
One more step in the 'perf archive' direction when we'll finally
be able to collect data in one machine and analyse in another.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263396139-4798-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/thread.h')
| -rw-r--r-- | tools/perf/util/thread.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h index c206f72c8881..c06c13535a70 100644 --- a/tools/perf/util/thread.h +++ b/tools/perf/util/thread.h @@ -67,4 +67,8 @@ map_groups__find_function(struct map_groups *self, struct perf_session *session, struct map *map_groups__find_by_name(struct map_groups *self, enum map_type type, const char *name); + +int __map_groups__create_kernel_maps(struct map_groups *self, + struct map *vmlinux_maps[MAP__NR_TYPES], + struct dso *kernel); #endif /* __PERF_THREAD_H */ |