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Message-Id: <20130802102036.957370130@linuxfoundation.org>
Date: Fri, 2 Aug 2013 18:23:18 +0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, "zhangwei(Jovi)" <jovi.zhangwei@...wei.com>
Subject: [ 05/23] tracing: Fix irqs-off tag display in syscall tracing
3.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: "zhangwei(Jovi)" <jovi.zhangwei@...wei.com>
commit 11034ae9c20f4057a6127fc965906417978e69b2 upstream
Initialization of variable irq_flags and pc was missed when backport
11034ae9c to linux-3.0.y and linux-3.4.y, my fault.
Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@...wei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
kernel/trace/trace_syscalls.c | 3 +++
1 file changed, 3 insertions(+)
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -357,6 +357,9 @@ void ftrace_syscall_exit(void *ignore, s
if (!sys_data)
return;
+ local_save_flags(irq_flags);
+ pc = preempt_count();
+
event = trace_current_buffer_lock_reserve(&buffer,
sys_data->exit_event->event.type, sizeof(*entry),
irq_flags, pc);
--
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