aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/platforms/cell/spufs/sched.c
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2008-04-29 17:08:38 +1000
committerJeremy Kerr <jk@ozlabs.org>2008-04-30 15:01:54 +1000
commit5158e9b5218bd3799c9fa8c401ad24d7f0c0a0a1 (patch)
tree4ed17672fe0582c46f594217ba410ec92aebfb45 /arch/powerpc/platforms/cell/spufs/sched.c
parent14b3ca4022f050f8622ed282b734ddf445464583 (diff)
downloadlinaro-lsk-5158e9b5218bd3799c9fa8c401ad24d7f0c0a0a1.tar.gz
[POWERPC] spufs: add context switch notification log
There are userspace instrumentation tools that need to monitor spu context switches. This patch adds a new file called 'switch_log' to each spufs context directory that can be used to monitor the context switches. Context switch in/out and exit from spu_run are monitored after the file was first opened and can be read from it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/sched.c')
-rw-r--r--arch/powerpc/platforms/cell/spufs/sched.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 00528ef84ad..31e9d85761c 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -240,6 +240,7 @@ static void spu_bind_context(struct spu *spu, struct spu_context *ctx)
spu->mfc_callback = spufs_mfc_callback;
mb();
spu_unmap_mappings(ctx);
+ spu_switch_log_notify(spu, ctx, SWITCH_LOG_START, 0);
spu_restore(&ctx->csa, spu);
spu->timestamp = jiffies;
spu_cpu_affinity_set(spu, raw_smp_processor_id());
@@ -419,6 +420,7 @@ static void spu_unbind_context(struct spu *spu, struct spu_context *ctx)
spu_switch_notify(spu, NULL);
spu_unmap_mappings(ctx);
spu_save(&ctx->csa, spu);
+ spu_switch_log_notify(spu, ctx, SWITCH_LOG_STOP, 0);
spu->timestamp = jiffies;
ctx->state = SPU_STATE_SAVED;
spu->ibox_callback = NULL;