From: Steven Rostedt <rostedt@goodmis.org>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Cc: Steven Rostedt <srostedt@redhat.com>
Subject: [PATCH 6/8] ftrace: use current CPU for function startup
Date: Thu, 10 Jul 2008 20:58:14 -0400 [thread overview]
Message-ID: <20080711005951.001704691@goodmis.org> (raw)
In-Reply-To: 20080711005808.316194101@goodmis.org
[-- Attachment #1: ftrace-function-use-this-cpu.patch --]
[-- Type: text/plain, Size: 932 bytes --]
This is more of a clean up. Currently the function tracer initializes the
tracer with which ever CPU was last used for tracing. This value isn't
realy useful for function tracing, but at least it should be something other
than a random number.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
kernel/trace/trace_functions.c | 3 +++
1 file changed, 3 insertions(+)
Index: linux-tip.git/kernel/trace/trace_functions.c
===================================================================
--- linux-tip.git.orig/kernel/trace/trace_functions.c 2008-07-10 12:19:54.000000000 -0400
+++ linux-tip.git/kernel/trace/trace_functions.c 2008-07-10 12:56:09.000000000 -0400
@@ -28,7 +28,10 @@ static void function_reset(struct trace_
static void start_function_trace(struct trace_array *tr)
{
+ tr->cpu = get_cpu();
function_reset(tr);
+ put_cpu();
+
tracing_start_cmdline_record();
tracing_start_function_trace();
}
--
next prev parent reply other threads:[~2008-07-11 1:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-11 0:58 [PATCH 0/8] ftrace: updates Steven Rostedt
2008-07-11 0:58 ` [PATCH 1/8] ftrace: move sched_switch enable after markers Steven Rostedt
2008-07-11 0:58 ` [PATCH 2/8] ftrace: define function trace nop Steven Rostedt
2008-07-11 0:58 ` [PATCH 3/8] ftrace: trace schedule Steven Rostedt
2008-07-11 0:58 ` [PATCH 4/8] ftrace: check proper config for preempt type Steven Rostedt
2008-07-11 0:58 ` [PATCH 5/8] ftrace: start wakeup tracing after setting function tracer Steven Rostedt
2008-07-11 0:58 ` Steven Rostedt [this message]
2008-07-11 0:58 ` [PATCH 7/8] ftrace: add ftrace_kill_atomic Steven Rostedt
2008-07-11 0:58 ` [PATCH 8/8] ftrace: separate out the function enabled variable Steven Rostedt
2008-07-11 13:50 ` [PATCH 0/8] ftrace: updates Ingo Molnar
2008-07-11 14:47 ` Ingo Molnar
2008-07-11 14:51 ` Steven Rostedt
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