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authorWu Zhangjin <wuzhangjin@gmail.com>2009-11-20 20:34:33 +0800
committerRalf Baechle <ralf@linux-mips.org>2009-12-17 01:57:24 +0000
commit8f99a162653531ef25a3dd0f92bfb6332cd2b295 (patch)
tree7dbb95ed810a1fe91c243e05b0d858a7846ec22c /arch/mips/kernel/smp.c
parent538f19526e40ce7a5a296fad6a3121409c890adc (diff)
MIPS: Tracing: Add IRQENTRY_EXIT section for MIPS
This patch add a new section for MIPS to record the block of the hardirq handling for function graph tracer(print_graph_irq) via adding the __irq_entry annotation to the the entrypoints of the hardirqs(the block with irq_enter()...irq_exit()). Thanks goes to Steven & Frederic Weisbecker for their feedbacks. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Nicholas Mc Guire <der.herr@hofr.at> Cc: zhangfx@lemote.com Cc: Wu Zhangjin <wuzhangjin@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com> Patchwork: http://patchwork.linux-mips.org/patch/676/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/smp.c')
-rw-r--r--arch/mips/kernel/smp.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index e72e6844d13..6cdca1956b7 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -32,6 +32,7 @@
#include <linux/cpumask.h>
#include <linux/cpu.h>
#include <linux/err.h>
+#include <linux/ftrace.h>
#include <asm/atomic.h>
#include <asm/cpu.h>
@@ -130,7 +131,7 @@ asmlinkage __cpuinit void start_secondary(void)
/*
* Call into both interrupt handlers, as we share the IPI for them
*/
-void smp_call_function_interrupt(void)
+void __irq_entry smp_call_function_interrupt(void)
{
irq_enter();
generic_smp_call_function_single_interrupt();