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| author | Masami Hiramatsu | 2015-02-26 07:54:40 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2015-02-27 14:08:37 +0100 |
| commit | a50d11a10c2db86d7383c281d4e249d5393661e9 (patch) | |
| tree | 75de0fc30dd2401a309c654adebfc8ac058559b2 /tools/perf/Documentation/perf-buildid-cache.txt | |
| parent | perf probe: Handle strdup() failure (diff) | |
| download | kernel-qcow2-linux-a50d11a10c2db86d7383c281d4e249d5393661e9.tar.gz kernel-qcow2-linux-a50d11a10c2db86d7383c281d4e249d5393661e9.tar.xz kernel-qcow2-linux-a50d11a10c2db86d7383c281d4e249d5393661e9.zip | |
perf buildid-cache: Add new buildid cache if update target is not cached
Add new buildid cache if the update target file is not cached.
This can happen when an old binary is replaced by new one after caching
the old one. In this case, user sees his operation just failed.
But it does not look straight, since user just pass the binary "path",
not "build-id".
----
# ./perf buildid-cache --add ./perf
(update ./perf to new binary)
# ./perf buildid-cache --update ./perf
./perf wasn't in the cache
#
----
This patch adds given new binary to cache if the new binary is
not cached. So we'll not see the above error.
----
# ./perf buildid-cache --add ./perf
(update ./perf to new binary)
# ./perf buildid-cache --update ./perf
#
----
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20150226065440.23912.1494.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-buildid-cache.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-buildid-cache.txt | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/tools/perf/Documentation/perf-buildid-cache.txt b/tools/perf/Documentation/perf-buildid-cache.txt index 0294c57b1f5e..cec6b57e8be6 100644 --- a/tools/perf/Documentation/perf-buildid-cache.txt +++ b/tools/perf/Documentation/perf-buildid-cache.txt @@ -41,9 +41,14 @@ OPTIONS --missing=:: List missing build ids in the cache for the specified file. -u:: ---update:: - Update specified file of the cache. It can be used to update kallsyms - kernel dso to vmlinux in order to support annotation. +--update=:: + Update specified file of the cache. Note that this doesn't remove + older entires since those may be still needed for annotating old + (or remote) perf.data. Only if there is already a cache which has + exactly same build-id, that is replaced by new one. It can be used + to update kallsyms and kernel dso to vmlinux in order to support + annotation. + -v:: --verbose:: Be more verbose. |