This is a note to let you know that I've just added the patch titled
tracing: Fix selftest function recursion accounting
to the 3.8-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-fix-selftest-function-recursion-accounting.patch
and it can be found in the queue-3.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 05cbbf643b8eea1be21082c53cdb856d1dc6d765 Mon Sep 17 00:00:00 2001
From: Steven Rostedt <srostedt@xxxxxxxxxx>
Date: Tue, 22 Jan 2013 23:35:11 -0500
Subject: tracing: Fix selftest function recursion accounting
From: Steven Rostedt <srostedt@xxxxxxxxxx>
commit 05cbbf643b8eea1be21082c53cdb856d1dc6d765 upstream.
The test that checks function recursion does things differently
if the arch does not support all ftrace features. But that really
doesn't make a difference with how the test runs, and either way
the count variable should be 2 at the end.
Currently the test wrongly fails for archs that don't support all
the ftrace features.
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
kernel/trace/trace_selftest.c | 16 +++-------------
1 file changed, 3 insertions(+), 13 deletions(-)
--- a/kernel/trace/trace_selftest.c
+++ b/kernel/trace/trace_selftest.c
@@ -452,7 +452,6 @@ trace_selftest_function_recursion(void)
char *func_name;
int len;
int ret;
- int cnt;
/* The previous test PASSED */
pr_cont("PASSED\n");
@@ -510,19 +509,10 @@ trace_selftest_function_recursion(void)
unregister_ftrace_function(&test_recsafe_probe);
- /*
- * If arch supports all ftrace features, and no other task
- * was on the list, we should be fine.
- */
- if (!ftrace_nr_registered_ops() && !FTRACE_FORCE_LIST_FUNC)
- cnt = 2; /* Should have recursed */
- else
- cnt = 1;
-
ret = -1;
- if (trace_selftest_recursion_cnt != cnt) {
- pr_cont("*callback not called expected %d times (%d)* ",
- cnt, trace_selftest_recursion_cnt);
+ if (trace_selftest_recursion_cnt != 2) {
+ pr_cont("*callback not called expected 2 times (%d)* ",
+ trace_selftest_recursion_cnt);
goto out;
}
Patches currently in stable-queue which might be from srostedt@xxxxxxxxxx are
queue-3.8/tracing-fix-selftest-function-recursion-accounting.patch
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