gru: improve GRU TLB dropin statistics
Update the TLB dropin statistics kept for each GRU context. Count TLB
dropins separate from the misses - some misses do not result in a TLB
dropin. Some of the diagnostics need both counts.
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>
diff --git a/drivers/misc/sgi-gru/gru.h b/drivers/misc/sgi-gru/gru.h
index f93f03a..3ad76cd 100644
--- a/drivers/misc/sgi-gru/gru.h
+++ b/drivers/misc/sgi-gru/gru.h
@@ -53,6 +53,17 @@
int free_user_cbr;
};
+/*
+ * Statictics kept for each context.
+ */
+struct gru_gseg_statistics {
+ unsigned long fmm_tlbmiss;
+ unsigned long upm_tlbmiss;
+ unsigned long tlbdropin;
+ unsigned long context_stolen;
+ unsigned long reserved[10];
+};
+
/* Flags for GRU options on the gru_create_context() call */
/* Select one of the follow 4 options to specify how TLB misses are handled */
#define GRU_OPT_MISS_DEFAULT 0x0000 /* Use default mode */