From: Feng Tang <feng.tang@intel.com>
Date: Tue, 30 Oct 2012 03:56:07 +0000 (+0800)
Subject: perf header: Add is_perf_magic() func
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~77^2~7^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e84ba4e26833991d1c1c15a592b1474ee2b6dfdb;p=pandora-kernel.git

perf header: Add is_perf_magic() func

With this function, other modules can basically check whether a file is
a legal perf data file by checking its first 8 bytes against all
possible perf magic numbers.

Change the function name from check_perf_magic to more meaningful
is_perf_magic as suggested by acme.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1351569369-26732-7-git-send-email-feng.tang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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