From: James Clark james.clark@arm.com
maillist inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8EC9K CVE: NA
Reference: https://lore.kernel.org/linux-arm-kernel/20240613061731.3109448-1-anshuman.k...
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In the perf script command, spaces are turned into newlines. But when there is a double space this results in empty lines which fail the following inverse grep test, so strip the empty lines.
Cc: Mark Rutland mark.rutland@arm.com Cc: Arnaldo Carvalho de Melo acme@kernel.org Cc: linux-perf-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: James Clark james.clark@arm.com Signed-off-by: Anshuman Khandual anshuman.khandual@arm.com Signed-off-by: Junhao He hejunhao3@huawei.com --- tools/perf/tests/shell/test_brstack.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/tests/shell/test_brstack.sh b/tools/perf/tests/shell/test_brstack.sh index 283c9a902bbf..b1fe29bb71b3 100755 --- a/tools/perf/tests/shell/test_brstack.sh +++ b/tools/perf/tests/shell/test_brstack.sh @@ -62,7 +62,7 @@ test_filter() { echo "Testing branch stack filtering permutation ($test_filter_filter,$test_filter_expect)"
perf record -o $TMPDIR/perf.data --branch-filter $test_filter_filter,save_type,u -- ${TESTPROG} > /dev/null 2>&1 - perf script -i $TMPDIR/perf.data --fields brstack | tr ' ' '\n' > $TMPDIR/perf.script + perf script -i $TMPDIR/perf.data --fields brstack | tr ' ' '\n' | sed '/^[[:space:]]*$/d' > $TMPDIR/perf.script
# fail if we find any branch type that doesn't match any of the expected ones # also consider UNKNOWN branch types (-)