This is a note to let you know that I've just added the patch titled
selftests/ftrace: Limit length in subsystem-enable tests
to the 4.19-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:
selftests-ftrace-limit-length-in-subsystem-enable-tests.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1a4ea83a6e67f1415a1f17c1af5e9c814c882bb5 Mon Sep 17 00:00:00 2001
From: Yuanhe Shu <xiangzao@xxxxxxxxxxxxxxxxx>
Date: Mon, 26 Feb 2024 11:18:16 +0800
Subject: selftests/ftrace: Limit length in subsystem-enable tests
From: Yuanhe Shu <xiangzao@xxxxxxxxxxxxxxxxx>
commit 1a4ea83a6e67f1415a1f17c1af5e9c814c882bb5 upstream.
While sched* events being traced and sched* events continuously happen,
"[xx] event tracing - enable/disable with subsystem level files" would
not stop as on some slower systems it seems to take forever.
Select the first 100 lines of output would be enough to judge whether
there are more than 3 types of sched events.
Fixes: 815b18ea66d6 ("ftracetest: Add basic event tracing test cases")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Yuanhe Shu <xiangzao@xxxxxxxxxxxxxxxxx>
Acked-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
Acked-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
Signed-off-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
+++ b/tools/testing/selftests/ftrace/test.d/event/subsystem-enable.tc
@@ -30,7 +30,7 @@ echo 'sched:*' > set_event
yield
-count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+count=`head -n 100 trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
if [ $count -lt 3 ]; then
fail "at least fork, exec and exit events should be recorded"
fi
@@ -41,7 +41,7 @@ echo 1 > events/sched/enable
yield
-count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+count=`head -n 100 trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
if [ $count -lt 3 ]; then
fail "at least fork, exec and exit events should be recorded"
fi
@@ -52,7 +52,7 @@ echo 0 > events/sched/enable
yield
-count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
+count=`head -n 100 trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
if [ $count -ne 0 ]; then
fail "any of scheduler events should not be recorded"
fi
Patches currently in stable-queue which might be from xiangzao@xxxxxxxxxxxxxxxxx are
queue-4.19/selftests-ftrace-limit-length-in-subsystem-enable-tests.patch
