From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Mathieu Desnoyers <compudj@krystal.dyndns.org>,
Steven Rostedt <srostedt@redhat.com>
Subject: [PATCH 1/6] ftrace: give time for wakeup test to run
Date: Mon, 29 Sep 2008 23:02:37 -0400 [thread overview]
Message-ID: <20080930030651.917721714@goodmis.org> (raw)
In-Reply-To: 20080930030236.230994826@goodmis.org
[-- Attachment #1: ftrace-add-wait-in-wakeup-selftest.patch --]
[-- Type: text/plain, Size: 930 bytes --]
It is possible that the testing thread in the ftrace wakeup test does not
run before we stop the trace. This will cause the trace to fail since nothing
will be in the buffers.
This patch adds a small wait in the wakeup test to allow for the woken task
to run and be traced.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
kernel/trace/trace_selftest.c | 3 +++
1 file changed, 3 insertions(+)
Index: linux-tip.git/kernel/trace/trace_selftest.c
===================================================================
--- linux-tip.git.orig/kernel/trace/trace_selftest.c 2008-09-29 20:13:37.000000000 -0400
+++ linux-tip.git/kernel/trace/trace_selftest.c 2008-09-29 20:14:30.000000000 -0400
@@ -498,6 +498,9 @@ trace_selftest_startup_wakeup(struct tra
wake_up_process(p);
+ /* give a little time to let the thread wake up */
+ msleep(100);
+
/* stop the tracing. */
tr->ctrl = 0;
trace->ctrl_update(tr);
--
next prev parent reply other threads:[~2008-09-30 3:07 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-30 3:02 [PATCH 0/6] ftrace: port to the new ring_buffer Steven Rostedt
2008-09-30 3:02 ` Steven Rostedt [this message]
2008-09-30 3:02 ` [PATCH 2/6] Unified trace buffer Steven Rostedt
2008-09-30 9:45 ` Ingo Molnar
2008-09-30 11:53 ` Ingo Molnar
2008-09-30 12:06 ` Steven Rostedt
2008-09-30 3:02 ` [PATCH 3/6] ring_buffer: add paranoid check for buffer page Steven Rostedt
2008-09-30 3:02 ` [PATCH 4/6] ring_buffer: reset buffer page when freeing Steven Rostedt
2008-09-30 3:02 ` [PATCH 5/6] ftrace: make work with new ring buffer Steven Rostedt
2008-09-30 3:02 ` [PATCH 6/6] ftrace: take advantage of variable length entries Steven Rostedt
2008-09-30 17:33 ` Pekka Paalanen
2008-09-30 17:45 ` Steven Rostedt
2008-10-01 4:42 ` Steven Rostedt
2008-10-01 7:54 ` Ingo Molnar
2008-10-01 14:52 ` Steven Rostedt
2008-10-01 14:52 ` [PATCH] ftrace: type cast verifier Steven Rostedt
2008-10-01 17:42 ` Ingo Molnar
2008-10-01 17:47 ` Ingo Molnar
2008-09-30 7:45 ` [PATCH 0/6] ftrace: port to the new ring_buffer Ingo Molnar
2008-09-30 8:23 ` Ingo Molnar
2008-09-30 8:30 ` Ingo Molnar
2008-09-30 9:13 ` Ingo Molnar
2008-09-30 12:04 ` Steven Rostedt
2008-09-30 12:04 ` Steven Rostedt
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