From: James Clark <james.clark@xxxxxxx>
[ Upstream commit 20ebc4a649b82e6ad892684c76ea1e8dd786d336 ]
Commit f4a2aade6809c657 ("perf tests powerpc: Fix branch stack sampling
test to include sanity check for branch filter") added a skip if certain
branch options aren't available.
But the change added both -b (--branch-any) and --branch-filter options
at the same time, which will always result in a failure on any platform
because the arguments can't be used together.
Fix this by removing -b (--branch-any) and leaving --branch-filter which
already specifies 'any'. Also add warning messages to the test and perf
tool.
Output on x86 before this fix:
$ sudo ./perf test branch
108: Check branch stack sampling : Skip
After:
$ sudo ./perf test branch
108: Check branch stack sampling : Ok
Fixes: f4a2aade6809c657 ("perf tests powerpc: Fix branch stack sampling test to include sanity check for branch filter")
Signed-off-by: James Clark <james.clark@xxxxxxx>
Tested-by: Athira Jajeev <atrajeev@xxxxxxxxxxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Anshuman.Khandual@xxxxxxx
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Kajol Jain <kjain@xxxxxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221028121913.745307-1-james.clark@xxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
tools/perf/tests/shell/test_brstack.sh | 5 ++++-
tools/perf/util/parse-branch-options.c | 4 +++-
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/tools/perf/tests/shell/test_brstack.sh b/tools/perf/tests/shell/test_brstack.sh
index ec801cffae6b..d7ff5c4b4da4 100755
--- a/tools/perf/tests/shell/test_brstack.sh
+++ b/tools/perf/tests/shell/test_brstack.sh
@@ -13,7 +13,10 @@ fi
# skip the test if the hardware doesn't support branch stack sampling
# and if the architecture doesn't support filter types: any,save_type,u
-perf record -b -o- -B --branch-filter any,save_type,u true > /dev/null 2>&1 || exit 2
+if ! perf record -o- --no-buildid --branch-filter any,save_type,u -- true > /dev/null 2>&1 ; then
+ echo "skip: system doesn't support filter types: any,save_type,u"
+ exit 2
+fi
TMPDIR=$(mktemp -d /tmp/__perf_test.program.XXXXX)
diff --git a/tools/perf/util/parse-branch-options.c b/tools/perf/util/parse-branch-options.c
index bb4aa88c50a8..35264b5684d0 100644
--- a/tools/perf/util/parse-branch-options.c
+++ b/tools/perf/util/parse-branch-options.c
@@ -101,8 +101,10 @@ parse_branch_stack(const struct option *opt, const char *str, int unset)
/*
* cannot set it twice, -b + --branch-filter for instance
*/
- if (*mode)
+ if (*mode) {
+ pr_err("Error: Can't use --branch-any (-b) with --branch-filter (-j).\n");
return -1;
+ }
return parse_branch_str(str, mode);
}
--
2.35.1
