diff options
| author | Christoph Hellwig <hch@lst.de> | 2008-04-29 17:08:38 +1000 |
|---|---|---|
| committer | Jeremy Kerr <jk@ozlabs.org> | 2008-04-30 15:01:54 +1000 |
| commit | 5158e9b5218bd3799c9fa8c401ad24d7f0c0a0a1 (patch) | |
| tree | 4ed17672fe0582c46f594217ba410ec92aebfb45 /arch/powerpc/platforms/cell/spufs/sched.c | |
| parent | 14b3ca4022f050f8622ed282b734ddf445464583 (diff) | |
[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.c | 2 |
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; |