[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>
diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index 8ff16b4..7f5d0b2 100644
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -176,6 +176,7 @@
int spufs_handle_class1(struct spu_context *ctx);
/* context management */
+extern atomic_t nr_spu_contexts;
static inline void spu_acquire(struct spu_context *ctx)
{
mutex_lock(&ctx->state_mutex);