diff options
| author | Bob Nelson <rrnelson@linux.vnet.ibm.com> | 2007-07-20 21:39:52 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@klappe.arndb.de> | 2007-07-20 21:42:20 +0200 |
| commit | 36aaccc1e96481e8310b1d13600096da0f24ff43 (patch) | |
| tree | 2726a068ae0d4529ccde030136255abbd1b1e069 /arch/powerpc/platforms/cell/spufs/run.c | |
| parent | 2414059420311e5384de646eebfd529c184afd3c (diff) | |
[CELL] oprofile: enable SPU switch notification to detect currently active SPU tasks
From: Maynard Johnson <mpjohn@us.ibm.com>
This patch adds to the capability of spu_switch_event_register so that
the caller is also notified of currently active SPU tasks.
Exports spu_switch_event_register and spu_switch_event_unregister so
that OProfile can get access to the notifications provided.
Signed-off-by: Maynard Johnson <mpjohn@us.ibm.com>
Signed-off-by: Carl Love <carll@us.ibm.com>
Signed-off-by: Bob Nelson <rrnelson@us.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/run.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/run.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c index c0238ea5b55a..0b50fa5cb39d 100644 --- a/arch/powerpc/platforms/cell/spufs/run.c +++ b/arch/powerpc/platforms/cell/spufs/run.c @@ -18,15 +18,17 @@ void spufs_stop_callback(struct spu *spu) wake_up_all(&ctx->stop_wq); } -static inline int spu_stopped(struct spu_context *ctx, u32 * stat) +static inline int spu_stopped(struct spu_context *ctx, u32 *stat) { struct spu *spu; u64 pte_fault; *stat = ctx->ops->status_read(ctx); - if (ctx->state != SPU_STATE_RUNNABLE) - return 1; + spu = ctx->spu; + if (ctx->state != SPU_STATE_RUNNABLE || + test_bit(SPU_SCHED_NOTIFY_ACTIVE, &ctx->sched_flags)) + return 1; pte_fault = spu->dsisr & (MFC_DSISR_PTE_NOT_FOUND | MFC_DSISR_ACCESS_DENIED); return (!(*stat & SPU_STATUS_RUNNING) || pte_fault || spu->class_0_pending) ? @@ -124,7 +126,7 @@ out: return ret; } -static int spu_run_init(struct spu_context *ctx, u32 * npc) +static int spu_run_init(struct spu_context *ctx, u32 *npc) { spuctx_switch_state(ctx, SPU_UTIL_SYSTEM); @@ -158,8 +160,8 @@ static int spu_run_init(struct spu_context *ctx, u32 * npc) return 0; } -static int spu_run_fini(struct spu_context *ctx, u32 * npc, - u32 * status) +static int spu_run_fini(struct spu_context *ctx, u32 *npc, + u32 *status) { int ret = 0; @@ -298,6 +300,7 @@ static inline int spu_process_events(struct spu_context *ctx) long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *event) { int ret; + struct spu *spu; u32 status; if (mutex_lock_interruptible(&ctx->run_mutex)) @@ -333,6 +336,14 @@ long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *event) ret = spufs_wait(ctx->stop_wq, spu_stopped(ctx, &status)); if (unlikely(ret)) break; + spu = ctx->spu; + if (unlikely(test_and_clear_bit(SPU_SCHED_NOTIFY_ACTIVE, + &ctx->sched_flags))) { + if (!(status & SPU_STATUS_STOPPED_BY_STOP)) { + spu_switch_notify(spu, ctx); + continue; + } + } spuctx_switch_state(ctx, SPU_UTIL_SYSTEM); |