diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2006-01-05 17:05:29 +0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-01-09 07:44:57 +0300 |
| commit | 2fb9d2063626374dd8a2514b3a730facac8235d8 (patch) | |
| tree | b410dcdbc5aee656c37951be36951130450549e7 /arch/powerpc/platforms/cell/interrupt.h | |
| parent | aeb013772a2cc85a8d0baffd64977d2888bc781d (diff) | |
| download | linux-2fb9d2063626374dd8a2514b3a730facac8235d8.tar.xz | |
[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 'arch/powerpc/platforms/cell/interrupt.h')
| -rw-r--r-- | arch/powerpc/platforms/cell/interrupt.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/interrupt.h b/arch/powerpc/platforms/cell/interrupt.h index 37d58e6fd0c6..a14bd38791c0 100644 --- a/arch/powerpc/platforms/cell/interrupt.h +++ b/arch/powerpc/platforms/cell/interrupt.h @@ -54,6 +54,7 @@ extern void iic_setup_cpu(void); extern void iic_local_enable(void); extern void iic_local_disable(void); +extern u8 iic_get_target_id(int cpu); extern void spider_init_IRQ(void); extern int spider_get_irq(unsigned long int_pending); |