diff options
Diffstat (limited to 'drivers/misc/sgi-gru/grufault.c')
| -rw-r--r-- | drivers/misc/sgi-gru/grufault.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index 6d0681236db5..cdd151b30dc7 100644 --- a/drivers/misc/sgi-gru/grufault.c +++ b/drivers/misc/sgi-gru/grufault.c @@ -498,6 +498,7 @@ irqreturn_t gru_intr(int irq, void *dev_id) */ if (!gts->ts_force_cch_reload && down_read_trylock(>s->ts_mm->mmap_sem)) { + gts->ustats.fmm_tlbdropin++; gru_try_dropin(gts, tfh, NULL); up_read(>s->ts_mm->mmap_sem); } else { @@ -516,6 +517,7 @@ static int gru_user_dropin(struct gru_thread_state *gts, struct gru_mm_struct *gms = gts->ts_gms; int ret; + gts->ustats.upm_tlbdropin++; while (1) { wait_event(gms->ms_wait_queue, atomic_read(&gms->ms_range_active) == 0); @@ -719,6 +721,31 @@ int gru_user_flush_tlb(unsigned long arg) } /* + * Fetch GSEG statisticss + */ +long gru_get_gseg_statistics(unsigned long arg) +{ + struct gru_thread_state *gts; + struct gru_get_gseg_statistics_req req; + + if (copy_from_user(&req, (void __user *)arg, sizeof(req))) + return -EFAULT; + + gts = gru_find_lock_gts(req.gseg); + if (gts) { + memcpy(&req.stats, >s->ustats, sizeof(gts->ustats)); + gru_unlock_gts(gts); + } else { + memset(&req.stats, 0, sizeof(gts->ustats)); + } + + if (copy_to_user((void __user *)arg, &req, sizeof(req))) + return -EFAULT; + + return 0; +} + +/* * Register the current task as the user of the GSEG slice. * Needed for TLB fault interrupt targeting. */ |