diff options
| author | Jeremy Kerr <jk@ozlabs.org> | 2007-12-20 16:39:59 +0900 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-12-21 19:46:20 +1100 |
| commit | d6ad39bc53521275d14fde86bfb94d9b2ddb7a08 (patch) | |
| tree | 07dcc592b343395cb7fbfb3053aa21103fb94352 /arch/powerpc/platforms/cell/spufs/switch.c | |
| parent | 8af30675c3e7b945bbaf6f57b724f246e56eb209 (diff) | |
[POWERPC] spufs: rework class 0 and 1 interrupt handling
Based on original patches from
Arnd Bergmann <arnd.bergman@de.ibm.com>; and
Luke Browning <lukebr@linux.vnet.ibm.com>
Currently, spu contexts need to be loaded to the SPU in order to take
class 0 and class 1 exceptions.
This change makes the actual interrupt-handlers much simpler (ie,
set the exception information in the context save area), and defers the
handling code to the spufs_handle_class[01] functions, called from
spufs_run_spu.
This should improve the concurrency of the spu scheduling leading to
greater SPU utilization when SPUs are overcommited.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/switch.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/switch.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/switch.c b/arch/powerpc/platforms/cell/spufs/switch.c index c9600e8e0e16..1a7d7a0f66fc 100644 --- a/arch/powerpc/platforms/cell/spufs/switch.c +++ b/arch/powerpc/platforms/cell/spufs/switch.c @@ -2077,10 +2077,6 @@ int spu_save(struct spu_state *prev, struct spu *spu) int rc; acquire_spu_lock(spu); /* Step 1. */ - prev->dar = spu->dar; - prev->dsisr = spu->dsisr; - spu->dar = 0; - spu->dsisr = 0; rc = __do_spu_save(prev, spu); /* Steps 2-53. */ release_spu_lock(spu); if (rc != 0 && rc != 2 && rc != 6) { @@ -2107,9 +2103,6 @@ int spu_restore(struct spu_state *new, struct spu *spu) acquire_spu_lock(spu); harvest(NULL, spu); spu->slb_replace = 0; - new->dar = 0; - new->dsisr = 0; - spu->class_0_pending = 0; rc = __do_spu_restore(new, spu); release_spu_lock(spu); if (rc) { |