diff options
| author | Jack Steiner <steiner@sgi.com> | 2009-12-15 16:48:18 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-16 07:20:17 -0800 |
| commit | 5958ab88f721d312b531d17705fc3ed54102fa05 (patch) | |
| tree | 0fdd2a982c1fa0370d496a25f7b3ef70ccb96bde /drivers/misc/sgi-gru/grufault.c | |
| parent | 2ce4d4c937ce4c14704f02ae60e2e07e3906c68a (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.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index 6ff6dfb7516..38657cdaf54 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(>s->ts_mm->mmap_sem)) { - gts->ustats.fmm_tlbdropin++; gru_try_dropin(gru, gts, tfh, NULL); up_read(>s->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); |