perf tools: Add dso__data_get/put_fd()

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Using dso__data_fd() in multi-thread environment is not safe since
returned fd can be closed and/or reused anytime.

So convert it to the dso__data_get/put_fd() pair to protect the access
with lock.

The original dso__data_fd() is deprecated and kept only for testing.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1432137821-10853-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

...

This commit is contained in:

Namhyung Kim 2015-05-21 01:03:41 +09:00 • committed by Arnaldo Carvalho de Melo

parent e840238d7c

commit 4bb11d012a

4 changed files with 50 additions and 16 deletions

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11

tools/perf/tests/dso-data.c

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31

tools/perf/util/dso.c

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13

tools/perf/util/dso.h

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11

tools/perf/util/unwind-libunwind.c

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