diff options
| -rw-r--r-- | drivers/misc/sgi-gru/grufault.c | 5 | ||||
| -rw-r--r-- | drivers/misc/sgi-gru/grukservices.c | 4 |
2 files changed, 8 insertions, 1 deletions
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index 679e01778286..2605edfbaebe 100644 --- a/drivers/misc/sgi-gru/grufault.c +++ b/drivers/misc/sgi-gru/grufault.c @@ -733,6 +733,11 @@ long gru_get_gseg_statistics(unsigned long arg) if (copy_from_user(&req, (void __user *)arg, sizeof(req))) return -EFAULT; + /* + * The library creates arrays of contexts for threaded programs. + * If no gts exists in the array, the context has never been used & all + * statistics are implicitly 0. + */ gts = gru_find_lock_gts(req.gseg); if (gts) { memcpy(&req.stats, >s->ustats, sizeof(gts->ustats)); diff --git a/drivers/misc/sgi-gru/grukservices.c b/drivers/misc/sgi-gru/grukservices.c index d2b149facda1..306855cc80fe 100644 --- a/drivers/misc/sgi-gru/grukservices.c +++ b/drivers/misc/sgi-gru/grukservices.c @@ -200,13 +200,15 @@ static int gru_free_kernel_contexts(void) bs = gru_base[bid]; if (!bs) continue; + + /* Ignore busy contexts. Don't want to block here. */ if (down_write_trylock(&bs->bs_kgts_sema)) { kgts = bs->bs_kgts; if (kgts && kgts->ts_gru) gru_unload_context(kgts, 0); - kfree(kgts); bs->bs_kgts = NULL; up_write(&bs->bs_kgts_sema); + kfree(kgts); } else { ret++; } |