diff options
Diffstat (limited to 'kernel/rcu/rcutorture.c')
| -rw-r--r-- | kernel/rcu/rcutorture.c | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 0d257e2dc9c6..03bdf6752fe4 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1289,6 +1289,8 @@ rcu_torture_writer(void *arg) static int rcu_torture_fakewriter(void *arg) { + unsigned long gp_snap; + int i; DEFINE_TORTURE_RANDOM(rand); VERBOSE_TOROUT_STRING("rcu_torture_fakewriter task started"); @@ -1300,15 +1302,37 @@ rcu_torture_fakewriter(void *arg) if (cur_ops->cb_barrier != NULL && torture_random(&rand) % (nfakewriters * 8) == 0) { cur_ops->cb_barrier(); - } else if (gp_normal == gp_exp) { - if (cur_ops->sync && torture_random(&rand) & 0x80) - cur_ops->sync(); - else if (cur_ops->exp_sync) + } else { + switch (synctype[torture_random(&rand) % nsynctypes]) { + case RTWS_DEF_FREE: + break; + case RTWS_EXP_SYNC: cur_ops->exp_sync(); - } else if (gp_normal && cur_ops->sync) { - cur_ops->sync(); - } else if (cur_ops->exp_sync) { - cur_ops->exp_sync(); + break; + case RTWS_COND_GET: + gp_snap = cur_ops->get_gp_state(); + i = torture_random(&rand) % 16; + if (i != 0) + schedule_timeout_interruptible(i); + udelay(torture_random(&rand) % 1000); + cur_ops->cond_sync(gp_snap); + break; + case RTWS_POLL_GET: + gp_snap = cur_ops->start_gp_poll(); + while (!cur_ops->poll_gp_state(gp_snap)) { + i = torture_random(&rand) % 16; + if (i != 0) + schedule_timeout_interruptible(i); + udelay(torture_random(&rand) % 1000); + } + break; + case RTWS_SYNC: + cur_ops->sync(); + break; + default: + WARN_ON_ONCE(1); + break; + } } stutter_wait("rcu_torture_fakewriter"); } while (!torture_must_stop()); |