This is a note to let you know that I've just added the patch titled
tracing: Make trace_marker use the correct per-instance buffer
to the 3.10-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-make-trace_marker-use-the-correct-per-instance-buffer.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 2d71619c59fac95a5415a326162fa046161b938c Mon Sep 17 00:00:00 2001
From: Alexander Z Lam <azl@xxxxxxxxxx>
Date: Mon, 1 Jul 2013 15:31:24 -0700
Subject: tracing: Make trace_marker use the correct per-instance buffer
From: Alexander Z Lam <azl@xxxxxxxxxx>
commit 2d71619c59fac95a5415a326162fa046161b938c upstream.
The trace_marker file was present for each new instance created, but it
added the trace mark to the global trace buffer instead of to
the instance's buffer.
Link: http://lkml.kernel.org/r/1372717885-4543-2-git-send-email-azl@xxxxxxxxxx
Signed-off-by: Alexander Z Lam <azl@xxxxxxxxxx>
Cc: David Sharp <dhsharp@xxxxxxxxxx>
Cc: Vaibhav Nagarnaik <vnagarnaik@xxxxxxxxxx>
Cc: Alexander Z Lam <lambchop468@xxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
kernel/trace/trace.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4328,6 +4328,7 @@ tracing_mark_write(struct file *filp, co
size_t cnt, loff_t *fpos)
{
unsigned long addr = (unsigned long)ubuf;
+ struct trace_array *tr = filp->private_data;
struct ring_buffer_event *event;
struct ring_buffer *buffer;
struct print_entry *entry;
@@ -4387,7 +4388,7 @@ tracing_mark_write(struct file *filp, co
local_save_flags(irq_flags);
size = sizeof(*entry) + cnt + 2; /* possible \n added */
- buffer = global_trace.trace_buffer.buffer;
+ buffer = tr->trace_buffer.buffer;
event = trace_buffer_lock_reserve(buffer, TRACE_PRINT, size,
irq_flags, preempt_count());
if (!event) {
Patches currently in stable-queue which might be from azl@xxxxxxxxxx are
queue-3.10/tracing-get-trace_array-ref-counts-when-accessing-trace-files.patch
queue-3.10/tracing-add-trace_array_get-put-to-event-handling.patch
queue-3.10/tracing-protect-ftrace_trace_arrays-list-in-trace_events.c.patch
queue-3.10/tracing-make-trace_marker-use-the-correct-per-instance-buffer.patch
queue-3.10/tracing-add-trace_array_get-put-to-handle-instance-refs-better.patch
--
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