gru: collect per-context user statistics

Collect GRU statistics for each user GRU context.  Statistics are kept for
TLB misses & content resource contention.  Add user request for retrieving
the statistics.

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, 3 insertions, 0 deletions

diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index 9761bfee8669..63b76e2732ff 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -148,6 +148,7 @@
 #include <linux/wait.h>
 #include <linux/mmu_notifier.h>
 #include "gru.h"
+#include "grulib.h"
 #include "gruhandles.h"
 
 extern struct gru_stats_s gru_stats;
@@ -388,6 +389,7 @@ struct gru_thread_state {
                                                           allocated CB */
         int                     ts_data_valid;  /* Indicates if ts_gdata has
                                                    valid data */
+        struct gts_statistics   ustats;         /* User statistics */
         unsigned long           ts_gdata[0];    /* save area for GRU data (CB,
                                                    DS, CBE) */
 };
@@ -641,6 +643,7 @@ extern void gru_tgh_flush_init(struct gru_state *gru);
 extern int gru_kservices_init(void);
 extern void gru_kservices_exit(void);
 extern int gru_dump_chiplet_request(unsigned long arg);
+extern long gru_get_gseg_statistics(unsigned long arg);
 extern irqreturn_t gru_intr(int irq, void *dev_id);
 extern int gru_handle_user_call_os(unsigned long address);
 extern int gru_user_flush_tlb(unsigned long arg);