1 files changed, 29 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index cdc515182f82..dd63b16bb072 100644
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -47,6 +47,30 @@ enum {
         SPU_SCHED_SPU_RUN,      /* context is within spu_run */
 };
 
+enum {
+        SWITCH_LOG_BUFSIZE = 4096,
+};
+
+enum {
+        SWITCH_LOG_START,
+        SWITCH_LOG_STOP,
+        SWITCH_LOG_EXIT,
+};
+
+struct switch_log {
+        spinlock_t              lock;
+        wait_queue_head_t       wait;
+        unsigned long           head;
+        unsigned long           tail;
+        struct switch_log_entry {
+                struct timespec tstamp;
+                s32             spu_id;
+                u32             type;
+                u32             val;
+                u64             timebase;
+        } log[];
+};
+
 struct spu_context {
         struct spu *spu;                  /* pointer to a physical SPU */
         struct spu_state csa;             /* SPU context save area. */
@@ -116,6 +140,9 @@ struct spu_context {
                 unsigned long long libassist;
         } stats;
 
+        /* context switch log */
+        struct switch_log *switch_log;
+
         struct list_head aff_list;
         int aff_head;
         int aff_offset;
@@ -256,6 +283,8 @@ int spu_activate(struct spu_context *ctx, unsigned long flags);
 void spu_deactivate(struct spu_context *ctx);
 void spu_yield(struct spu_context *ctx);
 void spu_switch_notify(struct spu *spu, struct spu_context *ctx);
+void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx,
+                u32 type, u32 val);
 void spu_set_timeslice(struct spu_context *ctx);
 void spu_update_sched_info(struct spu_context *ctx);
 void __spu_update_sched_info(struct spu_context *ctx);