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| author | Arnd Bergmann <arnd@arndb.de> | 2007-07-20 21:39:49 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@klappe.arndb.de> | 2007-07-20 21:42:18 +0200 |
| commit | cbc23d3e7cb3c9fd3c9fce0bc3f44f687a9517c0 (patch) | |
| tree | 4adcbbfa5402e46c816788cd86f992082d2a6f61 /arch/powerpc/platforms/cell/spu_base.c | |
| parent | c5fc8d2a92461fcabd00dfd678204cba36b93119 (diff) | |
| download | linux-cbc23d3e7cb3c9fd3c9fce0bc3f44f687a9517c0.tar.gz linux-cbc23d3e7cb3c9fd3c9fce0bc3f44f687a9517c0.tar.bz2 linux-cbc23d3e7cb3c9fd3c9fce0bc3f44f687a9517c0.zip | |
[CELL] spufs: integration of SPE affinity with the scheduller
This patch makes the scheduller honor affinity information for each
context being scheduled. If the context has no affinity information,
behaviour is unchanged. If there are affinity information, context is
schedulled to be run on the exact spu recommended by the affinity
placement algorithm.
Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Diffstat (limited to 'arch/powerpc/platforms/cell/spu_base.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/spu_base.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c index 75b5af0a7e21..5f399313b472 100644 --- a/arch/powerpc/platforms/cell/spu_base.c +++ b/arch/powerpc/platforms/cell/spu_base.c @@ -425,6 +425,25 @@ static void spu_init_channels(struct spu *spu) } } +struct spu *spu_alloc_spu(struct spu *req_spu) +{ + struct spu *spu, *ret = NULL; + + mutex_lock(&spu_mutex); + list_for_each_entry(spu, &cbe_spu_info[req_spu->node].free_spus, list) { + if (spu == req_spu) { + list_del_init(&spu->list); + pr_debug("Got SPU %d %d\n", spu->number, spu->node); + spu_init_channels(spu); + ret = spu; + break; + } + } + mutex_unlock(&spu_mutex); + return ret; +} +EXPORT_SYMBOL_GPL(spu_alloc_spu); + struct spu *spu_alloc_node(int node) { struct spu *spu = NULL; |