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authorArnd Bergmann <arnd@arndb.de>2006-01-05 09:05:29 -0500
committerPaul Mackerras <paulus@samba.org>2006-01-08 23:44:57 -0500
commit2fb9d2063626374dd8a2514b3a730facac8235d8 (patch)
treeb410dcdbc5aee656c37951be36951130450549e7 /include/asm-powerpc/spu.h
parentaeb013772a2cc85a8d0baffd64977d2888bc781d (diff)
[PATCH] spufs: set irq affinity for running threads
For far, all SPU triggered interrupts always end up on the first SMT thread, which is a bad solution. This patch implements setting the affinity to the CPU that was running last when entering execution on an SPU. This should result in a significant reduction in IPI calls and better cache locality for SPE thread specific data. Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/spu.h')
-rw-r--r--include/asm-powerpc/spu.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h
index 692aa60e9903..38bacf2f6e0c 100644
--- a/include/asm-powerpc/spu.h
+++ b/include/asm-powerpc/spu.h
@@ -147,6 +147,7 @@ struct spu *spu_alloc(void);
147void spu_free(struct spu *spu); 147void spu_free(struct spu *spu);
148int spu_irq_class_0_bottom(struct spu *spu); 148int spu_irq_class_0_bottom(struct spu *spu);
149int spu_irq_class_1_bottom(struct spu *spu); 149int spu_irq_class_1_bottom(struct spu *spu);
150void spu_irq_setaffinity(struct spu *spu, int cpu);
150 151
151extern struct spufs_calls { 152extern struct spufs_calls {
152 asmlinkage long (*create_thread)(const char __user *name, 153 asmlinkage long (*create_thread)(const char __user *name,