commit 22722051fb6bcbb95c895e68dad10d34a9db7e4d
author Andreas Mohr <andi@rhlx01.fht-esslingen.de> Fri Jun 23 02:05:30 2006 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> Fri Jun 23 07:43:05 2006 -0700
tree 2f6e7a7888b4369cb2dd18be1cd4d3b18730280b
parent 89d0cf01c0aa9e8241cc3703a359ecd6abf3c28a

[PATCH] x86/powerpc make hardirq_ctx and softirq_ctx __read_mostly

The hardirq_ctx and softirq_ctx variables are written to on init only,

Signed-off-by: Andreas Mohr <andi@lisas.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/kernel/irq.c

diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index f3a9c78..248e922 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -42,8 +42,8 @@
 	u32                     stack[THREAD_SIZE/sizeof(u32)];
 };
 
-static union irq_ctx *hardirq_ctx[NR_CPUS];
-static union irq_ctx *softirq_ctx[NR_CPUS];
+static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly;
+static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
 #endif
 
 /*

arch/powerpc/kernel/irq.c

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index bfcec4c..40d4c14 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -380,8 +380,8 @@
 #endif /* CONFIG_PPC64 */
 
 #ifdef CONFIG_IRQSTACKS
-struct thread_info *softirq_ctx[NR_CPUS];
-struct thread_info *hardirq_ctx[NR_CPUS];
+struct thread_info *softirq_ctx[NR_CPUS] __read_mostly;
+struct thread_info *hardirq_ctx[NR_CPUS] __read_mostly;
 
 void irq_ctx_init(void)
 {