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perf arm spe: Fix uninitialized record error variable

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The auxtrace init variable 'err' was not being initialized, leading perf
to abort early in an SPE record command when there was no explicit
error, rather only based whatever memory contents were on the stack.
Initialize it explicitly on getting an SPE successfully, the same way
cs-etm does.

Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Dongjiu Geng <gengdongjiu@huawei.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: ffd3d18c20 ("perf tools: Add ARM Statistical Profiling Extensions (SPE) support")
Link: http://lkml.kernel.org/r/20180810174512.52900813e57cbccf18ce99a2@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Kim Phillips 2018-08-10 17:45:12 -05:00 committed by Arnaldo Carvalho de Melo
parent c9b51a0170
commit 3443533665
1 changed files with 1 additions and 0 deletions
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tools/perf/arch/arm64/util/arm-spe.c
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@ -194,6 +194,7 @@ struct auxtrace_record *arm_spe_recording_init(int *err,
sper->itr.read_finish = arm_spe_read_finish;
sper->itr.alignment = 0;
*err = 0;
return &sper->itr;
}