From: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Date: Fri, 15 Nov 2024 09:15:27 +0000 (+0800)
Subject: perf tests: Fix an incorrect type in append_script()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=9ba3462c1ce5f1596c8f065540628cec7bdad005;p=users%2Fjedix%2Flinux-maple.git

perf tests: Fix an incorrect type in append_script()

The return value from the call to readlink() is ssize_t. However, the
return value is being assigned to an size_t variable 'len', so making
'len' an ssize_t.

./tools/perf/tests/tests-scripts.c:182:5-8: WARNING: Unsigned expression compared with zero: len < 0.

Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=11909
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20241115091527.128923-1-jiapeng.chong@linux.alibaba.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/perf/tests/tests-scripts.c b/tools/perf/tests/tests-scripts.c
index cf3ae0c1d8717..1d5759d081417 100644
--- a/tools/perf/tests/tests-scripts.c
+++ b/tools/perf/tests/tests-scripts.c
@@ -174,7 +174,7 @@ static void append_script(int dir_fd, const char *name, char *desc,
 	char filename[PATH_MAX], link[128];
 	struct test_suite *test_suite, **result_tmp;
 	struct test_case *tests;
-	size_t len;
+	ssize_t len;
 	char *exclusive;
 
 	snprintf(link, sizeof(link), "/proc/%d/fd/%d", getpid(), dir_fd);