Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cbc23d3e7cb3c9fd3c9fce0bc3f44f687a9517c0
Commit: cbc23d3e7cb3c9fd3c9fce0bc3f44f687a9517c0
Parent: c5fc8d2a92461fcabd00dfd678204cba36b93119
Author: Arnd Bergmann <[EMAIL PROTECTED]>
AuthorDate: Fri Jul 20 21:39:49 2007 +0200
Committer: Arnd Bergmann <[EMAIL PROTECTED]>
CommitDate: Fri Jul 20 21:42:18 2007 +0200
[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 <[EMAIL PROTECTED]>
Signed-off-by: Arnd Bergmann <[EMAIL PROTECTED]>
---
arch/powerpc/platforms/cell/spu_base.c | 19 +++++++++++++++++++
arch/powerpc/platforms/cell/spufs/sched.c | 4 ++++
2 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/platforms/cell/spu_base.c
b/arch/powerpc/platforms/cell/spu_base.c
index 75b5af0..5f39931 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;
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c
b/arch/powerpc/platforms/cell/spufs/sched.c
index a9569de..49b8f68 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -507,6 +507,10 @@ static struct spu *spu_get_idle(struct spu_context *ctx)
int node = cpu_to_node(raw_smp_processor_id());
int n;
+ spu = affinity_check(ctx);
+ if (spu)
+ return spu_alloc_spu(spu);
+
for (n = 0; n < MAX_NUMNODES; n++, node++) {
node = (node < MAX_NUMNODES) ? node : 0;
if (!node_allowed(ctx, node))
-
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
