linux-kernel - [PATCH] x86: make 32bit MAX_HARDIRQSS_PER_CPU to be NR

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Date:	Mon, 12 Jan 2009 11:54:27 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86: make 32bit MAX_HARDIRQSS_PER_CPU to be NR_VECTORS


Impact: clean up to be same as 64bit

32bit is use per-cpu vector too, so don't use default NR_IRQS

Signed-off-by: Yinghai Lu <yinghai@...nel.org>

---
 arch/x86/include/asm/hardirq_32.h  |    3 +++
 arch/x86/include/asm/irq_vectors.h |    4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

Index: linux-2.6/arch/x86/include/asm/hardirq_32.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/hardirq_32.h
+++ linux-2.6/arch/x86/include/asm/hardirq_32.h
@@ -20,6 +20,9 @@ typedef struct {
 
 DECLARE_PER_CPU(irq_cpustat_t, irq_stat);
 
+/* We can have at most NR_VECTORS irqs routed to a cpu at a time */
+#define MAX_HARDIRQS_PER_CPU NR_VECTORS
+
 #define __ARCH_IRQ_STAT
 #define __IRQ_STAT(cpu, member) (per_cpu(irq_stat, cpu).member)
 
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