diff options
| author | Wu Zhangjin <wuzhangjin@gmail.com> | 2009-11-20 20:34:33 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-12-17 01:57:24 +0000 |
| commit | 8f99a162653531ef25a3dd0f92bfb6332cd2b295 (patch) | |
| tree | 7dbb95ed810a1fe91c243e05b0d858a7846ec22c /arch/mips/sgi-ip22/ip22-time.c | |
| parent | 538f19526e40ce7a5a296fad6a3121409c890adc (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/sgi-ip22/ip22-time.c')
| -rw-r--r-- | arch/mips/sgi-ip22/ip22-time.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/sgi-ip22/ip22-time.c b/arch/mips/sgi-ip22/ip22-time.c index c8f7d2328b2..603fc91c103 100644 --- a/arch/mips/sgi-ip22/ip22-time.c +++ b/arch/mips/sgi-ip22/ip22-time.c @@ -16,6 +16,7 @@ #include <linux/interrupt.h> #include <linux/kernel_stat.h> #include <linux/time.h> +#include <linux/ftrace.h> #include <asm/cpu.h> #include <asm/mipsregs.h> @@ -115,7 +116,7 @@ __init void plat_time_init(void) } /* Generic SGI handler for (spurious) 8254 interrupts */ -void indy_8254timer_irq(void) +void __irq_entry indy_8254timer_irq(void) { int irq = SGI_8254_0_IRQ; ULONG cnt; |