diff options
| -rw-r--r-- | kernel/rcu/rcuperf.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/kernel/rcu/rcuperf.c b/kernel/rcu/rcuperf.c index afd174e901c3..7b2dbdffd791 100644 --- a/kernel/rcu/rcuperf.c +++ b/kernel/rcu/rcuperf.c @@ -58,7 +58,7 @@ MODULE_AUTHOR("Paul E. McKenney <paulmck@linux.vnet.ibm.com>"); #define VERBOSE_PERFOUT_ERRSTRING(s) \ do { if (verbose) pr_alert("%s" PERF_FLAG "!!! %s\n", perf_type, s); } while (0) -torture_param(bool, gp_exp, true, "Use expedited GP wait primitives"); +torture_param(bool, gp_exp, false, "Use expedited GP wait primitives"); torture_param(int, holdoff, 10, "Holdoff time before test start (s)"); torture_param(int, nreaders, -1, "Number of RCU reader threads"); torture_param(int, nwriters, -1, "Number of RCU updater threads"); @@ -358,8 +358,6 @@ rcu_perf_writer(void *arg) u64 *wdpp = writer_durations[me]; VERBOSE_PERFOUT_STRING("rcu_perf_writer task started"); - WARN_ON(rcu_gp_is_expedited() && !rcu_gp_is_normal() && !gp_exp); - WARN_ON(rcu_gp_is_normal() && gp_exp); WARN_ON(!wdpp); set_cpus_allowed_ptr(current, cpumask_of(me % nr_cpu_ids)); sp.sched_priority = 1; @@ -626,6 +624,16 @@ rcu_perf_init(void) firsterr = -ENOMEM; goto unwind; } + if (rcu_gp_is_expedited() && !rcu_gp_is_normal() && !gp_exp) { + VERBOSE_PERFOUT_ERRSTRING("All grace periods expedited, no normal ones to measure!"); + firsterr = -EINVAL; + goto unwind; + } + if (rcu_gp_is_normal() && gp_exp) { + VERBOSE_PERFOUT_ERRSTRING("All grace periods normal, no expedited ones to measure!"); + firsterr = -EINVAL; + goto unwind; + } for (i = 0; i < nrealwriters; i++) { writer_durations[i] = kcalloc(MAX_MEAS, sizeof(*writer_durations[i]), |