diff options
| author | Christoph Hellwig <hch@lst.de> | 2007-06-29 02:58:02 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-07-03 07:24:46 +0200 |
| commit | 65de66f0b8bcb7431d9df82cf32b002062b3a611 (patch) | |
| tree | a81eef8195d7f2f1c8c0ad110577b1ca92999c7e /arch/powerpc/platforms/cell/spufs/context.c | |
| parent | [POWERPC] spufs: Add tid file (diff) | |
| download | linux-65de66f0b8bcb7431d9df82cf32b002062b3a611.tar.xz linux-65de66f0b8bcb7431d9df82cf32b002062b3a611.zip | |
[POWERPC] spufs: Implement /proc/spu_loadavg
Provide load average information for spu context. The format
is identical to /proc/loadavg, which is also where a lot of code
and concepts is borrowed from.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.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/context.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/context.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c index 6ff2a75589f3..f623d963fdc7 100644 --- a/arch/powerpc/platforms/cell/spufs/context.c +++ b/arch/powerpc/platforms/cell/spufs/context.c @@ -23,10 +23,14 @@ #include <linux/fs.h> #include <linux/mm.h> #include <linux/slab.h> +#include <asm/atomic.h> #include <asm/spu.h> #include <asm/spu_csa.h> #include "spufs.h" + +atomic_t nr_spu_contexts = ATOMIC_INIT(0); + struct spu_context *alloc_spu_context(struct spu_gang *gang) { struct spu_context *ctx; @@ -55,6 +59,8 @@ struct spu_context *alloc_spu_context(struct spu_gang *gang) spu_gang_add_ctx(gang, ctx); ctx->cpus_allowed = current->cpus_allowed; spu_set_timeslice(ctx); + + atomic_inc(&nr_spu_contexts); goto out; out_free: kfree(ctx); @@ -74,6 +80,7 @@ void destroy_spu_context(struct kref *kref) if (ctx->gang) spu_gang_remove_ctx(ctx->gang, ctx); BUG_ON(!list_empty(&ctx->rq)); + atomic_dec(&nr_spu_contexts); kfree(ctx); } |