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| author | Jeremy Kerr <jk@ozlabs.org> | 2008-04-23 14:24:27 +1000 |
|---|---|---|
| committer | Jeremy Kerr <jk@ozlabs.org> | 2008-05-05 13:33:43 +1000 |
| commit | c0bace5c7029ef7cbb6e6ffaa0469a3c042e5029 (patch) | |
| tree | 0c8183cd4dbcea455c9d4adf61a947c79696b9b3 /arch/powerpc/platforms | |
| parent | 55d7cd74d44e7e0597f95db25c12f3e6c5e7916f (diff) | |
| download | op-kernel-dev-c0bace5c7029ef7cbb6e6ffaa0469a3c042e5029.zip op-kernel-dev-c0bace5c7029ef7cbb6e6ffaa0469a3c042e5029.tar.gz | |
[POWERPC] spufs: update master runcntl with context lock held
Currently, we update the SPU master run control bit (ie,
spu_enable_spu) in spufs_run_spu before we grab the context mutex. This
can result in races with other processes accessing this context's
resources.
This change moves the spu_enable_spu to after we have acquired the
context lock.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/run.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c index a9c35b7..0634fec 100644 --- a/arch/powerpc/platforms/cell/spufs/run.c +++ b/arch/powerpc/platforms/cell/spufs/run.c @@ -343,13 +343,14 @@ long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *event) if (mutex_lock_interruptible(&ctx->run_mutex)) return -ERESTARTSYS; - spu_enable_spu(ctx); ctx->event_return = 0; ret = spu_acquire(ctx); if (ret) goto out_unlock; + spu_enable_spu(ctx); + spu_update_sched_info(ctx); ret = spu_run_init(ctx, npc); |
