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| author | Christoph Hellwig <hch@lst.de> | 2008-02-08 15:50:41 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-02-08 19:52:35 +1100 |
| commit | eebead5b8ff89340dc18ceec996157d0eb7d0287 (patch) | |
| tree | 65b88470bb8b2b14ea839234eba4c2ca3b60e587 /arch/powerpc/platforms/cell/spufs/run.c | |
| parent | 592a607bbc053bc6f614a0e619326009f4b3829e (diff) | |
| download | linux-eebead5b8ff89340dc18ceec996157d0eb7d0287.tar.gz linux-eebead5b8ff89340dc18ceec996157d0eb7d0287.tar.bz2 linux-eebead5b8ff89340dc18ceec996157d0eb7d0287.zip | |
[POWERPC] spufs: Fix state_mutex leaks
Fix various state_mutex leaks. The worst one was introduced by the
interrutible state_mutex conversion but there've been a few before
too. Notably spufs_wait now returns without the state_mutex held
when returning an error, which actually cleans up some code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luke Browning <lukebrowning@us.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-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 | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c index b4814c740d8a..e9c61a1a8f98 100644 --- a/arch/powerpc/platforms/cell/spufs/run.c +++ b/arch/powerpc/platforms/cell/spufs/run.c @@ -354,8 +354,15 @@ long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *event) do { ret = spufs_wait(ctx->stop_wq, spu_stopped(ctx, &status)); - if (unlikely(ret)) + if (unlikely(ret)) { + /* + * This is nasty: we need the state_mutex for all the + * bookkeeping even if the syscall was interrupted by + * a signal. ewww. + */ + mutex_lock(&ctx->state_mutex); break; + } spu = ctx->spu; if (unlikely(test_and_clear_bit(SPU_SCHED_NOTIFY_ACTIVE, &ctx->sched_flags))) { |