[Cbe-oss-dev] [PATCH 3/6] spufs: fix starvation case with terminated spes
Christoph Hellwig
hch at lst.de
Thu Feb 7 17:14:17 EST 2008
On Wed, Feb 06, 2008 at 03:43:33PM -0200, Luke Browning wrote:
> Fix spu starvation case with terminated ctxts.
>
> Terminated spe contexts need to yield the spu, so that the spufs scheduler
> can service the runqueue. Can't rely on the libspe to destroy the context
> as it is not a trusted entity. Fixes a testcase where a program creates
> 100 standalone contexts (ie. gang of one) and then waits for them to
> complete before it starts to destroy contexts.
>
> Moved spu_yield() into spu_run_fini() to avoid the extra lock reference.
Looks fine. But after your patch there is no caller of spu_yield left,
so please remove it. Or keep __spu_yield as spu_yield and document the
new locking.
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