This is a note to let you know that I've just added the patch titled
ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section
to the 3.4-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:
ftrace-move-ftrace_filter_lseek-out-of-config_dynamic_ftrace-section.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From lizefan@xxxxxxxxxx Mon Jun 10 14:15:51 2013
From: Li Zefan <lizefan@xxxxxxxxxx>
Date: Fri, 7 Jun 2013 17:02:08 +0800
Subject: ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section
To: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, Frederic Weisbecker <fweisbec@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, stable <stable@xxxxxxxxxxxxxxx>
Message-ID: <51B1A190.4060409@xxxxxxxxxx>
From: Steven Rostedt <rostedt@xxxxxxxxxxx>
commit 7f49ef69db6bbf756c0abca7e9b65b32e999eec8 upstream.
As ftrace_filter_lseek is now used with ftrace_pid_fops, it needs to
be moved out of the #ifdef CONFIG_DYNAMIC_FTRACE section as the
ftrace_pid_fops is defined when DYNAMIC_FTRACE is not.
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
[ lizf: adjust context ]
Signed-off-by: Li Zefan <lizefan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/ftrace.h | 3 ++-
kernel/trace/ftrace.c | 28 ++++++++++++++--------------
2 files changed, 16 insertions(+), 15 deletions(-)
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -299,7 +299,6 @@ ssize_t ftrace_filter_write(struct file
size_t cnt, loff_t *ppos);
ssize_t ftrace_notrace_write(struct file *file, const char __user *ubuf,
size_t cnt, loff_t *ppos);
-loff_t ftrace_filter_lseek(struct file *file, loff_t offset, int origin);
int ftrace_regex_release(struct inode *inode, struct file *file);
void __init
@@ -420,6 +419,8 @@ static inline int
ftrace_regex_release(struct inode *inode, struct file *file) { return -ENODEV; }
#endif /* CONFIG_DYNAMIC_FTRACE */
+loff_t ftrace_filter_lseek(struct file *file, loff_t offset, int whence);
+
/* totally disable ftrace - can not re-enable after this */
void ftrace_kill(void);
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -999,6 +999,19 @@ static __init void ftrace_profile_debugf
static struct pid * const ftrace_swapper_pid = &init_struct_pid;
+loff_t
+ftrace_filter_lseek(struct file *file, loff_t offset, int whence)
+{
+ loff_t ret;
+
+ if (file->f_mode & FMODE_READ)
+ ret = seq_lseek(file, offset, whence);
+ else
+ file->f_pos = ret = 1;
+
+ return ret;
+}
+
#ifdef CONFIG_DYNAMIC_FTRACE
#ifndef CONFIG_FTRACE_MCOUNT_RECORD
@@ -2541,7 +2554,7 @@ static void ftrace_filter_reset(struct f
* routine, you can use ftrace_filter_write() for the write
* routine if @flag has FTRACE_ITER_FILTER set, or
* ftrace_notrace_write() if @flag has FTRACE_ITER_NOTRACE set.
- * ftrace_regex_lseek() should be used as the lseek routine, and
+ * ftrace_filter_lseek() should be used as the lseek routine, and
* release must call ftrace_regex_release().
*/
int
@@ -2625,19 +2638,6 @@ ftrace_notrace_open(struct inode *inode,
inode, file);
}
-loff_t
-ftrace_filter_lseek(struct file *file, loff_t offset, int origin)
-{
- loff_t ret;
-
- if (file->f_mode & FMODE_READ)
- ret = seq_lseek(file, offset, origin);
- else
- file->f_pos = ret = 1;
-
- return ret;
-}
-
static int ftrace_match(char *str, char *regex, int len, int type)
{
int matched = 0;
Patches currently in stable-queue which might be from lizefan@xxxxxxxxxx are
queue-3.4/tracing-fix-possible-null-pointer-dereferences.patch
queue-3.4/ftrace-move-ftrace_filter_lseek-out-of-config_dynamic_ftrace-section.patch
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