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authorBob Nelson <rrnelson@linux.vnet.ibm.com>2007-07-20 21:39:53 +0200
committerArnd Bergmann <arnd@klappe.arndb.de>2007-07-20 21:42:24 +0200
commit1474855d0878cced6f39f51f3c2bd7428b44cb1e (patch)
treecbad42404bfc0f7222d0a88e4ed9b0e9e0d0cb50 /arch/powerpc/platforms/cell/spufs/context.c
parent36aaccc1e96481e8310b1d13600096da0f24ff43 (diff)
[CELL] oprofile: add support to OProfile for profiling CELL BE SPUs
From: Maynard Johnson <mpjohn@us.ibm.com> This patch updates the existing arch/powerpc/oprofile/op_model_cell.c to add in the SPU profiling capabilities. In addition, a 'cell' subdirectory was added to arch/powerpc/oprofile to hold Cell-specific SPU profiling code. Exports spu_set_profile_private_kref and spu_get_profile_private_kref which are used by OProfile to store private profile information in spufs data structures. Also incorporated several fixes from other patches (rrn). Check pointer returned from kzalloc. Eliminated unnecessary cast. Better error handling and cleanup in the related area. 64-bit unsigned long parameter was being demoted to 32-bit unsigned int and eventually promoted back to unsigned long. Signed-off-by: Carl Love <carll@us.ibm.com> Signed-off-by: Maynard Johnson <mpjohn@us.ibm.com> Signed-off-by: Bob Nelson <rrnelson@us.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Acked-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.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c
index a7efb999d65..6694f86d700 100644
--- a/arch/powerpc/platforms/cell/spufs/context.c
+++ b/arch/powerpc/platforms/cell/spufs/context.c
@@ -22,6 +22,7 @@
#include <linux/fs.h>
#include <linux/mm.h>
+#include <linux/module.h>
#include <linux/slab.h>
#include <asm/atomic.h>
#include <asm/spu.h>
@@ -81,6 +82,8 @@ void destroy_spu_context(struct kref *kref)
spu_fini_csa(&ctx->csa);
if (ctx->gang)
spu_gang_remove_ctx(ctx->gang, ctx);
+ if (ctx->prof_priv_kref)
+ kref_put(ctx->prof_priv_kref, ctx->prof_priv_release);
BUG_ON(!list_empty(&ctx->rq));
atomic_dec(&nr_spu_contexts);
kfree(ctx);
@@ -185,3 +188,20 @@ void spu_release_saved(struct spu_context *ctx)
spu_release(ctx);
}
+
+void spu_set_profile_private_kref(struct spu_context *ctx,
+ struct kref *prof_info_kref,
+ void ( * prof_info_release) (struct kref *kref))
+{
+ ctx->prof_priv_kref = prof_info_kref;
+ ctx->prof_priv_release = prof_info_release;
+}
+EXPORT_SYMBOL_GPL(spu_set_profile_private_kref);
+
+void *spu_get_profile_private_kref(struct spu_context *ctx)
+{
+ return ctx->prof_priv_kref;
+}
+EXPORT_SYMBOL_GPL(spu_get_profile_private_kref);
+
+