Commit-ID: 489338a717a0dfbbd5a3fabccf172b78f0ac9015
Gitweb: https://git.kernel.org/tip/489338a717a0dfbbd5a3fabccf172b78f0ac9015
Author: Gustavo A. R. Silva <gust...@embeddedor.com>
AuthorDate: Tue, 22 Jan 2019 17:34:39 -0600
Committer: Arnaldo Carvalho de Melo <a...@redhat.com>
CommitDate: Mon, 4 Feb 2019 11:32:14 -0300
perf tests evsel-tp-sched: Fix bitwise operator
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 <gust...@embeddedor.com>
Acked-by: Jiri Olsa <jo...@kernel.org>
Cc: Alexander Shishkin <alexander.shish...@linux.intel.com>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: sta...@vger.kernel.org
Fixes: 6a6cd11d4e57 ("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 <a...@redhat.com>
---
tools/perf/tests/evsel-tp-sched.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/tests/evsel-tp-sched.c
b/tools/perf/tests/evsel-tp-sched.c
index 5f8501c68da4..5cbba70bcdd0 100644
--- a/tools/perf/tests/evsel-tp-sched.c
+++ b/tools/perf/tests/evsel-tp-sched.c
@@ -17,7 +17,7 @@ static int perf_evsel__test_field(struct perf_evsel *evsel,
const char *name,
return -1;
}
- is_signed = !!(field->flags | TEP_FIELD_IS_SIGNED);
+ is_signed = !!(field->flags & TEP_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);
