From: Martin Kaiser <martin@kaiser.cx>
Date: Tue, 28 Apr 2026 14:38:46 +0000 (+0200)
Subject: perf test: Fix nanosleep check in the ftrace test
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a4cbd51862d449e487866c173f5dff46329da76c;p=thirdparty%2Fkernel%2Fstable.git

perf test: Fix nanosleep check in the ftrace test

The perf ftrace test case runs:

  perf ftrace profile --graph-opts depth=5 sleep 0.1

and checks that the output contains a *clock_nanosleep function with a
count of 1.

This fails on a risc-v system that uses musl as its C library. musl's
nanosleep syscall wrapper uses either the nanosleep or the
clock_nanosleep syscall.

Filter for sys_*nanosleep to allow both syscalls.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/perf/tests/shell/ftrace.sh b/tools/perf/tests/shell/ftrace.sh
index 7f8aafcbb761c..9f6e590f6437b 100755
--- a/tools/perf/tests/shell/ftrace.sh
+++ b/tools/perf/tests/shell/ftrace.sh
@@ -71,9 +71,10 @@ test_ftrace_profile() {
     grep ^# "${output}"
     time_re="[[:space:]]+1[[:digit:]]{5}\.[[:digit:]]{3}"
     # 100283.000 100283.000 100283.000          1   __x64_sys_clock_nanosleep
-    # Check for one *clock_nanosleep line with a Count of just 1 that takes a bit more than 0.1 seconds
-    # Strip the _x64_sys part to work with other architectures
-    grep -E "^${time_re}${time_re}${time_re}[[:space:]]+1[[:space:]]+.*clock_nanosleep" "${output}"
+    # Check for one *sys_*nanosleep line with a Count of just 1 that takes a bit more than 0.1 seconds
+    # Strip the _x64_ part to work with other architectures, strip the clock part to support
+    # C libraries that use the nanosleep syscall instead of clock_nanosleep
+    grep -E "^${time_re}${time_re}${time_re}[[:space:]]+1[[:space:]]+.*sys_.*nanosleep" "${output}"
     echo "perf ftrace profile test  [Success]"
 }