linux-kernel - [PATCH 5/9] ftrace: use this_cpu

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Message-ID: <50910A0A.9010209@gmail.com>
Date:	Wed, 31 Oct 2012 19:22:50 +0800
From:	Shan Wei <shanwei88@...il.com>
To:	rostedt@...dmis.org, fweisbec@...il.com, mingo@...hat.com,
	Kernel-Maillist <linux-kernel@...r.kernel.org>,
	cl@...ux-foundation.org
Subject: [PATCH 5/9] ftrace: use this_cpu_ptr per-cpu helper

From: Shan Wei <davidshan@...cent.com>

Signed-off-by: Shan Wei <davidshan@...cent.com>
---
 include/trace/ftrace.h |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index a763888..7c9fde7 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -638,7 +638,6 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
  *	struct trace_entry *ent;
  *	int __entry_size;
  *	int __data_size;
- *	int __cpu
  *	int pc;
  *
  *	pc = preempt_count();
@@ -654,7 +653,6 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
  *	// Protect the non nmi buffer
  *	// This also protects the rcu read side
  *	local_irq_save(irq_flags);
- *	__cpu = smp_processor_id();
  *
  *	if (in_nmi())
  *		trace_buf = rcu_dereference_sched(perf_trace_buf_nmi);
@@ -664,7 +662,7 @@ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
  *	if (!trace_buf)
  *		goto end;
  *
- *	trace_buf = per_cpu_ptr(trace_buf, __cpu);
+ *	trace_buf = this_cpu_ptr(trace_buf);
  *
  * 	// Avoid recursion from perf that could mess up the buffer
  * 	if (trace_buf->recursion++)
-- 
1.7.1

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