From: Namhyung Kim <namhyung@kernel.org>
Date: Mon, 18 May 2015 00:30:42 +0000 (+0900)
Subject: perf tools: Protect dso cache fd with a mutex
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~210^2~43^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=33bdedcea2d77231fe46b1204cf6fc3a7d7c96c9;p=pandora-kernel.git

perf tools: Protect dso cache fd with a mutex

When dso cache is accessed in multi-thread environment, it's possible to
close other dso->data.fd during operation due to open file limit.
Protect the file descriptors using a separate mutex.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1431909055-21442-28-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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