sgi-gru: add statistics to the GRU context management functions

Add statistics to the GRU context management functions.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index 378a0894198e..685db88cc475 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -242,6 +242,14 @@ struct gru_stats_s {
 enum mcs_op {cchop_allocate, cchop_start, cchop_interrupt, cchop_interrupt_sync,
         cchop_deallocate, tghop_invalidate, mcsop_last};
 
+struct mcs_op_statistic {
+        atomic_long_t   count;
+        atomic_long_t   total;
+        unsigned long   max;
+};
+
+extern struct mcs_op_statistic mcs_op_statistics[mcsop_last];
+
 #define OPT_DPRINT      1
 #define OPT_STATS       2
 #define GRU_QUICKLOOK   4