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| author | Jeremy Kerr <jk@ozlabs.org> | 2008-03-04 10:17:02 +0100 |
|---|---|---|
| committer | Jeremy Kerr <jk@ozlabs.org> | 2008-03-11 02:28:02 +0100 |
| commit | ce7c191bca88aa2f942f70a6d6c6315739a81a32 (patch) | |
| tree | 9acd862b1278fb4cc38f52ae11715e050e505621 | |
| parent | Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/arnd... (diff) | |
| download | linux-ce7c191bca88aa2f942f70a6d6c6315739a81a32.tar.xz linux-ce7c191bca88aa2f942f70a6d6c6315739a81a32.zip | |
[POWERPC] spufs: don't (ab)use SCHED_IDLE
commit 4ef11014 introduced a usage of SCHED_IDLE to detect when
a context is within spu_run.
Instead of SCHED_IDLE (which has other meaning), add a flag to
sched_flags to tell if a context should be running.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/run.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/sched.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/spufs.h | 1 |
3 files changed, 5 insertions, 3 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c index 6221968c2a3c..cac69e116776 100644 --- a/arch/powerpc/platforms/cell/spufs/run.c +++ b/arch/powerpc/platforms/cell/spufs/run.c @@ -220,6 +220,7 @@ static int spu_run_init(struct spu_context *ctx, u32 *npc) } } + set_bit(SPU_SCHED_SPU_RUN, &ctx->sched_flags); return 0; } @@ -234,7 +235,7 @@ static int spu_run_fini(struct spu_context *ctx, u32 *npc, *npc = ctx->ops->npc_read(ctx); spuctx_switch_state(ctx, SPU_UTIL_IDLE_LOADED); - ctx->policy = SCHED_IDLE; + clear_bit(SPU_SCHED_SPU_RUN, &ctx->sched_flags); spu_release(ctx); if (signal_pending(current)) diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c index 5d5f680cd0b8..00528ef84ad2 100644 --- a/arch/powerpc/platforms/cell/spufs/sched.c +++ b/arch/powerpc/platforms/cell/spufs/sched.c @@ -867,7 +867,7 @@ static noinline void spusched_tick(struct spu_context *ctx) if (ctx->policy == SCHED_FIFO) goto out; - if (--ctx->time_slice && ctx->policy != SCHED_IDLE) + if (--ctx->time_slice && test_bit(SPU_SCHED_SPU_RUN, &ctx->sched_flags)) goto out; spu = ctx->spu; @@ -877,7 +877,7 @@ static noinline void spusched_tick(struct spu_context *ctx) new = grab_runnable_context(ctx->prio + 1, spu->node); if (new) { spu_unschedule(spu, ctx); - if (ctx->policy != SCHED_IDLE) + if (test_bit(SPU_SCHED_SPU_RUN, &ctx->sched_flags)) spu_add_to_rq(ctx); } else { spu_context_nospu_trace(spusched_tick__newslice, ctx); diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h index 2c2fe3c07d72..cdc515182f82 100644 --- a/arch/powerpc/platforms/cell/spufs/spufs.h +++ b/arch/powerpc/platforms/cell/spufs/spufs.h @@ -44,6 +44,7 @@ struct spu_gang; enum { SPU_SCHED_NOTIFY_ACTIVE, SPU_SCHED_WAS_ACTIVE, /* was active upon spu_acquire_saved() */ + SPU_SCHED_SPU_RUN, /* context is within spu_run */ }; struct spu_context { |