From: Ingo Molnar <mingo@kernel.org>
Date: Wed, 9 Oct 2013 15:00:23 +0000 (+0200)
Subject: tools/perf/build: Fix non-existent build directory handling
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~41^2~28^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3fb66335e13ef7426affe9efa48c08857202c1cb;p=pandora-kernel.git

tools/perf/build: Fix non-existent build directory handling

Arnaldo reported that non-existent build directories were not
recognized  properly. The reason is readlink failure causing 'O'
to become empty.

Solve it by passing through the 'O' variable unmodified if
readlink fails.

Reported-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20131009150023.GA10167@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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