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perf tests evsel-tp-sched: Fix bitwise operator

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commit 489338a717 upstream.

Notice that the use of the bitwise OR operator '|' always leads to true
in this particular case, which seems a bit suspicious due to the context
in which this expression is being used.

Fix this by using bitwise AND operator '&' instead.

This bug was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Fixes: 6a6cd11d4e ("perf test: Add test for the sched tracepoint format fields")
Link: http://lkml.kernel.org/r/20190122233439.GA5868@embeddedor
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gustavo A. R. Silva
2019-01-22 17:34:39 -06:00
committed by Greg Kroah-Hartman
parent bbf850876f
commit ee5470d3e1
1 changed files with 1 additions and 1 deletions
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2
tools/perf/tests/evsel-tp-sched.c
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@@ -17,7 +17,7 @@ static int perf_evsel__test_field(struct perf_evsel *evsel, const char *name,
return -1;
}
is_signed = !!(field->flags | FIELD_IS_SIGNED);
is_signed = !!(field->flags & FIELD_IS_SIGNED);
if (should_be_signed && !is_signed) {
pr_debug("%s: \"%s\" signedness(%d) is wrong, should be %d\n",
evsel->name, name, is_signed, should_be_signed);