perf header: Add is_perf_magic() func

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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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Feng Tang 2012-10-30 11:56:07 +08:00 • committed by Arnaldo Carvalho de Melo

parent cdbab7c201

commit e84ba4e268

2 changed files with 11 additions and 0 deletions

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tools/perf/util/header.c

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tools/perf/util/header.h

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