summaryrefslogtreecommitdiff
path: root/drivers/misc/sgi-gru/grufault.c
diff options
context:
space:
mode:
authorJack Steiner <steiner@sgi.com>2009-12-15 16:48:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 07:20:17 -0800
commit5958ab88f721d312b531d17705fc3ed54102fa05 (patch)
tree0fdd2a982c1fa0370d496a25f7b3ef70ccb96bde /drivers/misc/sgi-gru/grufault.c
parent2ce4d4c937ce4c14704f02ae60e2e07e3906c68a (diff)
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>
Diffstat (limited to 'drivers/misc/sgi-gru/grufault.c')
-rw-r--r--drivers/misc/sgi-gru/grufault.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c
index 6ff6dfb7516d..38657cdaf54d 100644
--- a/drivers/misc/sgi-gru/grufault.c
+++ b/drivers/misc/sgi-gru/grufault.c
@@ -438,6 +438,7 @@ static int gru_try_dropin(struct gru_state *gru,
}
gru_cb_set_istatus_active(cbk);
+ gts->ustats.tlbdropin++;
tfh_write_restart(tfh, gpa, GAA_RAM, vaddr, asid, write,
GRU_PAGESIZE(pageshift));
gru_dbg(grudev,
@@ -580,9 +581,9 @@ static irqreturn_t gru_intr(int chiplet, int blade)
* This is running in interrupt context. Trylock the mmap_sem.
* If it fails, retry the fault in user context.
*/
+ gts->ustats.fmm_tlbmiss++;
if (!gts->ts_force_cch_reload &&
down_read_trylock(&gts->ts_mm->mmap_sem)) {
- gts->ustats.fmm_tlbdropin++;
gru_try_dropin(gru, gts, tfh, NULL);
up_read(&gts->ts_mm->mmap_sem);
} else {
@@ -624,7 +625,7 @@ static int gru_user_dropin(struct gru_thread_state *gts,
struct gru_mm_struct *gms = gts->ts_gms;
int ret;
- gts->ustats.upm_tlbdropin++;
+ gts->ustats.upm_tlbmiss++;
while (1) {
wait_event(gms->ms_wait_queue,
atomic_read(&gms->ms_range_active) == 0);