This is a note to let you know that I've just added the patch titled
tracing: Remove extra space at the end of hwlat_detector/mode
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tracing-remove-extra-space-at-the-end-of-hwlat_detec.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 48e98fcda3e7346a0ba10e840e3e8bb809730c4e
Author: Mikhail Kobuk <m.kobuk@xxxxxxxxx>
Date: Fri Aug 25 13:34:30 2023 +0300
tracing: Remove extra space at the end of hwlat_detector/mode
[ Upstream commit 2cf0dee989a8b2501929eaab29473b6b1fa11057 ]
Space is printed after each mode value including the last one:
$ echo \"$(sudo cat /sys/kernel/tracing/hwlat_detector/mode)\"
"none [round-robin] per-cpu "
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Link: https://lore.kernel.org/linux-trace-kernel/20230825103432.7750-1-m.kobuk@xxxxxxxxx
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Fixes: 8fa826b7344d ("trace/hwlat: Implement the mode config option")
Signed-off-by: Mikhail Kobuk <m.kobuk@xxxxxxxxx>
Reviewed-by: Alexey Khoroshilov <khoroshilov@xxxxxxxxx>
Acked-by: Daniel Bristot de Oliveira <bristot@xxxxxxxxxx>
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c
index 2f37a6e68aa9f..b791524a6536a 100644
--- a/kernel/trace/trace_hwlat.c
+++ b/kernel/trace/trace_hwlat.c
@@ -635,7 +635,7 @@ static int s_mode_show(struct seq_file *s, void *v)
else
seq_printf(s, "%s", thread_mode_str[mode]);
- if (mode != MODE_MAX)
+ if (mode < MODE_MAX - 1) /* if mode is any but last */
seq_puts(s, " ");
return 0;
