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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/include/asm/irq.h
parent538f19526e40ce7a5a296fad6a3121409c890adc (diff)
downloadlinux-2.6.34-ux500-8f99a162653531ef25a3dd0f92bfb6332cd2b295.tar.gz
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/include/asm/irq.h')
-rw-r--r--arch/mips/include/asm/irq.h29
1 files changed, 2 insertions, 27 deletions
diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h
index 09b08d05ff7..06960364c96 100644
--- a/arch/mips/include/asm/irq.h
+++ b/arch/mips/include/asm/irq.h
@@ -113,36 +113,11 @@ do { \
#endif
-/*
- * do_IRQ handles all normal device IRQ's (the special
- * SMP cross-CPU interrupts have their own specific
- * handlers).
- *
- * Ideally there should be away to get this into kernel/irq/handle.c to
- * avoid the overhead of a call for just a tiny function ...
- */
-#define do_IRQ(irq) \
-do { \
- irq_enter(); \
- __DO_IRQ_SMTC_HOOK(irq); \
- generic_handle_irq(irq); \
- irq_exit(); \
-} while (0)
+extern void do_IRQ(unsigned int irq);
#ifdef CONFIG_MIPS_MT_SMTC_IRQAFF
-/*
- * To avoid inefficient and in some cases pathological re-checking of
- * IRQ affinity, we have this variant that skips the affinity check.
- */
-
-#define do_IRQ_no_affinity(irq) \
-do { \
- irq_enter(); \
- __NO_AFFINITY_IRQ_SMTC_HOOK(irq); \
- generic_handle_irq(irq); \
- irq_exit(); \
-} while (0)
+extern void do_IRQ_no_affinity(unsigned int irq);
#endif /* CONFIG_MIPS_MT_SMTC_IRQAFF */