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Commit 5ccf60f2 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcutorture: Rename PRINTK to TOROUT 



Since it doesn't do printk()s anymore anyway, this commit renames these
macros from PRINTK to TOROUT (short for torture output).

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
parent 9e250225

kernel/rcu/rcutorture.c

+67 −67
Original line number Diff line number Diff line
@@ -98,11 +98,11 @@ module_param(torture_type, charp, 0444); 
MODULE_PARM_DESC(torture_type, "Type of RCU to torture (rcu, rcu_bh, ...)");



#define TORTURE_FLAG "-torture:"

#define PRINTK_STRING(s) \

#define TOROUT_STRING(s) \

	do { pr_alert("%s" TORTURE_FLAG s "\n", torture_type); } while (0)

#define VERBOSE_PRINTK_STRING(s) \

#define VERBOSE_TOROUT_STRING(s) \

	do { if (verbose) pr_alert("%s" TORTURE_FLAG s "\n", torture_type); } while (0)

#define VERBOSE_PRINTK_ERRSTRING(s) \

#define VERBOSE_TOROUT_ERRSTRING(s) \

	do { if (verbose) pr_alert("%s" TORTURE_FLAG "!!! " s "\n", torture_type); } while (0)



static int nrealreaders;
@@ -619,12 +619,12 @@ static int rcu_torture_boost(void *arg) 
	struct rcu_boost_inflight rbi = { .inflight = 0 };

	struct sched_param sp;



	VERBOSE_PRINTK_STRING("rcu_torture_boost started");

	VERBOSE_TOROUT_STRING("rcu_torture_boost started");



	/* Set real-time priority. */

	sp.sched_priority = 1;

	if (sched_setscheduler(current, SCHED_FIFO, &sp) < 0) {

		VERBOSE_PRINTK_STRING("rcu_torture_boost RT prio failed!");

		VERBOSE_TOROUT_STRING("rcu_torture_boost RT prio failed!");

		n_rcu_torture_boost_rterror++;

	}
@@ -652,7 +652,7 @@ static int rcu_torture_boost(void *arg) 
				call_rcu(&rbi.rcu, rcu_torture_boost_cb);

				if (jiffies - call_rcu_time >

					 test_boost_duration * HZ - HZ / 2) {

					VERBOSE_PRINTK_STRING("rcu_torture_boost boosting failed");

					VERBOSE_TOROUT_STRING("rcu_torture_boost boosting failed");

					n_rcu_torture_boost_failure++;

				}

				call_rcu_time = jiffies;
@@ -688,7 +688,7 @@ checkwait: rcu_stutter_wait("rcu_torture_boost"); 
	} while (!kthread_should_stop() && fullstop  == FULLSTOP_DONTSTOP);



	/* Clean up and exit. */

	VERBOSE_PRINTK_STRING("rcu_torture_boost task stopping");

	VERBOSE_TOROUT_STRING("rcu_torture_boost task stopping");

	rcutorture_shutdown_absorb("rcu_torture_boost");

	while (!kthread_should_stop() || rbi.inflight)

		schedule_timeout_uninterruptible(1);
@@ -708,7 +708,7 @@ rcu_torture_fqs(void *arg) 
	unsigned long fqs_resume_time;

	int fqs_burst_remaining;



	VERBOSE_PRINTK_STRING("rcu_torture_fqs task started");

	VERBOSE_TOROUT_STRING("rcu_torture_fqs task started");

	do {

		fqs_resume_time = jiffies + fqs_stutter * HZ;

		while (ULONG_CMP_LT(jiffies, fqs_resume_time) &&
@@ -724,7 +724,7 @@ rcu_torture_fqs(void *arg) 
		}

		rcu_stutter_wait("rcu_torture_fqs");

	} while (!kthread_should_stop() && fullstop == FULLSTOP_DONTSTOP);

	VERBOSE_PRINTK_STRING("rcu_torture_fqs task stopping");

	VERBOSE_TOROUT_STRING("rcu_torture_fqs task stopping");

	rcutorture_shutdown_absorb("rcu_torture_fqs");

	while (!kthread_should_stop())

		schedule_timeout_uninterruptible(1);
@@ -746,7 +746,7 @@ rcu_torture_writer(void *arg) 
	struct rcu_torture *old_rp;

	static DEFINE_TORTURE_RANDOM(rand);



	VERBOSE_PRINTK_STRING("rcu_torture_writer task started");

	VERBOSE_TOROUT_STRING("rcu_torture_writer task started");

	set_user_nice(current, 19);



	do {
@@ -796,7 +796,7 @@ rcu_torture_writer(void *arg) 
		rcutorture_record_progress(++rcu_torture_current_version);

		rcu_stutter_wait("rcu_torture_writer");

	} while (!kthread_should_stop() && fullstop == FULLSTOP_DONTSTOP);

	VERBOSE_PRINTK_STRING("rcu_torture_writer task stopping");

	VERBOSE_TOROUT_STRING("rcu_torture_writer task stopping");

	rcutorture_shutdown_absorb("rcu_torture_writer");

	while (!kthread_should_stop())

		schedule_timeout_uninterruptible(1);
@@ -812,7 +812,7 @@ rcu_torture_fakewriter(void *arg) 
{

	DEFINE_TORTURE_RANDOM(rand);



	VERBOSE_PRINTK_STRING("rcu_torture_fakewriter task started");

	VERBOSE_TOROUT_STRING("rcu_torture_fakewriter task started");

	set_user_nice(current, 19);



	do {
@@ -834,7 +834,7 @@ rcu_torture_fakewriter(void *arg) 
		rcu_stutter_wait("rcu_torture_fakewriter");

	} while (!kthread_should_stop() && fullstop == FULLSTOP_DONTSTOP);



	VERBOSE_PRINTK_STRING("rcu_torture_fakewriter task stopping");

	VERBOSE_TOROUT_STRING("rcu_torture_fakewriter task stopping");

	rcutorture_shutdown_absorb("rcu_torture_fakewriter");

	while (!kthread_should_stop())

		schedule_timeout_uninterruptible(1);
@@ -928,7 +928,7 @@ rcu_torture_reader(void *arg) 
	struct timer_list t;

	unsigned long long ts;



	VERBOSE_PRINTK_STRING("rcu_torture_reader task started");

	VERBOSE_TOROUT_STRING("rcu_torture_reader task started");

	set_user_nice(current, 19);

	if (irqreader && cur_ops->irq_capable)

		setup_timer_on_stack(&t, rcu_torture_timer, 0);
@@ -978,7 +978,7 @@ rcu_torture_reader(void *arg) 
		schedule();

		rcu_stutter_wait("rcu_torture_reader");

	} while (!kthread_should_stop() && fullstop == FULLSTOP_DONTSTOP);

	VERBOSE_PRINTK_STRING("rcu_torture_reader task stopping");

	VERBOSE_TOROUT_STRING("rcu_torture_reader task stopping");

	rcutorture_shutdown_absorb("rcu_torture_reader");

	if (irqreader && cur_ops->irq_capable)

		del_timer_sync(&t);
@@ -1099,13 +1099,13 @@ rcu_torture_stats_print(void) 
static int

rcu_torture_stats(void *arg)

{

	VERBOSE_PRINTK_STRING("rcu_torture_stats task started");

	VERBOSE_TOROUT_STRING("rcu_torture_stats task started");

	do {

		schedule_timeout_interruptible(stat_interval * HZ);

		rcu_torture_stats_print();

		rcutorture_shutdown_absorb("rcu_torture_stats");

	} while (!kthread_should_stop());

	VERBOSE_PRINTK_STRING("rcu_torture_stats task stopping");

	VERBOSE_TOROUT_STRING("rcu_torture_stats task stopping");

	return 0;

}
@@ -1183,13 +1183,13 @@ static void rcu_torture_shuffle_tasks(void) 
static int

rcu_torture_shuffle(void *arg)

{

	VERBOSE_PRINTK_STRING("rcu_torture_shuffle task started");

	VERBOSE_TOROUT_STRING("rcu_torture_shuffle task started");

	do {

		schedule_timeout_interruptible(shuffle_interval * HZ);

		rcu_torture_shuffle_tasks();

		rcutorture_shutdown_absorb("rcu_torture_shuffle");

	} while (!kthread_should_stop());

	VERBOSE_PRINTK_STRING("rcu_torture_shuffle task stopping");

	VERBOSE_TOROUT_STRING("rcu_torture_shuffle task stopping");

	return 0;

}
@@ -1199,7 +1199,7 @@ rcu_torture_shuffle(void *arg) 
static int

rcu_torture_stutter(void *arg)

{

	VERBOSE_PRINTK_STRING("rcu_torture_stutter task started");

	VERBOSE_TOROUT_STRING("rcu_torture_stutter task started");

	do {

		schedule_timeout_interruptible(stutter * HZ);

		stutter_pause_test = 1;
@@ -1208,7 +1208,7 @@ rcu_torture_stutter(void *arg) 
		stutter_pause_test = 0;

		rcutorture_shutdown_absorb("rcu_torture_stutter");

	} while (!kthread_should_stop());

	VERBOSE_PRINTK_STRING("rcu_torture_stutter task stopping");

	VERBOSE_TOROUT_STRING("rcu_torture_stutter task stopping");

	return 0;

}
@@ -1246,7 +1246,7 @@ static void rcutorture_booster_cleanup(int cpu) 
	if (boost_tasks[cpu] == NULL)

		return;

	mutex_lock(&boost_mutex);

	VERBOSE_PRINTK_STRING("Stopping rcu_torture_boost task");

	VERBOSE_TOROUT_STRING("Stopping rcu_torture_boost task");

	t = boost_tasks[cpu];

	boost_tasks[cpu] = NULL;

	mutex_unlock(&boost_mutex);
@@ -1265,13 +1265,13 @@ static int rcutorture_booster_init(int cpu) 


	/* Don't allow time recalculation while creating a new task. */

	mutex_lock(&boost_mutex);

	VERBOSE_PRINTK_STRING("Creating rcu_torture_boost task");

	VERBOSE_TOROUT_STRING("Creating rcu_torture_boost task");

	boost_tasks[cpu] = kthread_create_on_node(rcu_torture_boost, NULL,

						  cpu_to_node(cpu),

						  "rcu_torture_boost");

	if (IS_ERR(boost_tasks[cpu])) {

		retval = PTR_ERR(boost_tasks[cpu]);

		VERBOSE_PRINTK_STRING("rcu_torture_boost task create failed");

		VERBOSE_TOROUT_STRING("rcu_torture_boost task create failed");

		n_rcu_torture_boost_ktrerror++;

		boost_tasks[cpu] = NULL;

		mutex_unlock(&boost_mutex);
@@ -1293,7 +1293,7 @@ rcu_torture_shutdown(void *arg) 
	long delta;

	unsigned long jiffies_snap;



	VERBOSE_PRINTK_STRING("rcu_torture_shutdown task started");

	VERBOSE_TOROUT_STRING("rcu_torture_shutdown task started");

	jiffies_snap = ACCESS_ONCE(jiffies);

	while (ULONG_CMP_LT(jiffies_snap, shutdown_time) &&

	       !kthread_should_stop()) {
@@ -1306,13 +1306,13 @@ rcu_torture_shutdown(void *arg) 
		jiffies_snap = ACCESS_ONCE(jiffies);

	}

	if (kthread_should_stop()) {

		VERBOSE_PRINTK_STRING("rcu_torture_shutdown task stopping");

		VERBOSE_TOROUT_STRING("rcu_torture_shutdown task stopping");

		return 0;

	}



	/* OK, shut down the system. */



	VERBOSE_PRINTK_STRING("rcu_torture_shutdown task shutting down system");

	VERBOSE_TOROUT_STRING("rcu_torture_shutdown task shutting down system");

	shutdown_task = NULL;	/* Avoid self-kill deadlock. */

	rcu_torture_cleanup();	/* Get the success/failure message. */

	kernel_power_off();	/* Shut down the system. */
@@ -1335,14 +1335,14 @@ rcu_torture_onoff(void *arg) 
	int ret;

	unsigned long starttime;



	VERBOSE_PRINTK_STRING("rcu_torture_onoff task started");

	VERBOSE_TOROUT_STRING("rcu_torture_onoff task started");

	for_each_online_cpu(cpu)

		maxcpu = cpu;

	WARN_ON(maxcpu < 0);

	if (onoff_holdoff > 0) {

		VERBOSE_PRINTK_STRING("rcu_torture_onoff begin holdoff");

		VERBOSE_TOROUT_STRING("rcu_torture_onoff begin holdoff");

		schedule_timeout_interruptible(onoff_holdoff * HZ);

		VERBOSE_PRINTK_STRING("rcu_torture_onoff end holdoff");

		VERBOSE_TOROUT_STRING("rcu_torture_onoff end holdoff");

	}

	while (!kthread_should_stop()) {

		cpu = (torture_random(&rand) >> 4) % (maxcpu + 1);
@@ -1409,7 +1409,7 @@ rcu_torture_onoff(void *arg) 
		}

		schedule_timeout_interruptible(onoff_interval * HZ);

	}

	VERBOSE_PRINTK_STRING("rcu_torture_onoff task stopping");

	VERBOSE_TOROUT_STRING("rcu_torture_onoff task stopping");

	return 0;

}
@@ -1433,7 +1433,7 @@ static void rcu_torture_onoff_cleanup(void) 
{

	if (onoff_task == NULL)

		return;

	VERBOSE_PRINTK_STRING("Stopping rcu_torture_onoff task");

	VERBOSE_TOROUT_STRING("Stopping rcu_torture_onoff task");

	kthread_stop(onoff_task);

	onoff_task = NULL;

}
@@ -1460,11 +1460,11 @@ static int rcu_torture_stall(void *args) 
{

	unsigned long stop_at;



	VERBOSE_PRINTK_STRING("rcu_torture_stall task started");

	VERBOSE_TOROUT_STRING("rcu_torture_stall task started");

	if (stall_cpu_holdoff > 0) {

		VERBOSE_PRINTK_STRING("rcu_torture_stall begin holdoff");

		VERBOSE_TOROUT_STRING("rcu_torture_stall begin holdoff");

		schedule_timeout_interruptible(stall_cpu_holdoff * HZ);

		VERBOSE_PRINTK_STRING("rcu_torture_stall end holdoff");

		VERBOSE_TOROUT_STRING("rcu_torture_stall end holdoff");

	}

	if (!kthread_should_stop()) {

		stop_at = get_seconds() + stall_cpu;
@@ -1505,7 +1505,7 @@ static void rcu_torture_stall_cleanup(void) 
{

	if (stall_task == NULL)

		return;

	VERBOSE_PRINTK_STRING("Stopping rcu_torture_stall_task.");

	VERBOSE_TOROUT_STRING("Stopping rcu_torture_stall_task.");

	kthread_stop(stall_task);

	stall_task = NULL;

}
@@ -1525,7 +1525,7 @@ static int rcu_torture_barrier_cbs(void *arg) 
	struct rcu_head rcu;



	init_rcu_head_on_stack(&rcu);

	VERBOSE_PRINTK_STRING("rcu_torture_barrier_cbs task started");

	VERBOSE_TOROUT_STRING("rcu_torture_barrier_cbs task started");

	set_user_nice(current, 19);

	do {

		wait_event(barrier_cbs_wq[myid],
@@ -1541,7 +1541,7 @@ static int rcu_torture_barrier_cbs(void *arg) 
		if (atomic_dec_and_test(&barrier_cbs_count))

			wake_up(&barrier_wq);

	} while (!kthread_should_stop() && fullstop == FULLSTOP_DONTSTOP);

	VERBOSE_PRINTK_STRING("rcu_torture_barrier_cbs task stopping");

	VERBOSE_TOROUT_STRING("rcu_torture_barrier_cbs task stopping");

	rcutorture_shutdown_absorb("rcu_torture_barrier_cbs");

	while (!kthread_should_stop())

		schedule_timeout_interruptible(1);
@@ -1555,7 +1555,7 @@ static int rcu_torture_barrier(void *arg) 
{

	int i;



	VERBOSE_PRINTK_STRING("rcu_torture_barrier task starting");

	VERBOSE_TOROUT_STRING("rcu_torture_barrier task starting");

	do {

		atomic_set(&barrier_cbs_invoked, 0);

		atomic_set(&barrier_cbs_count, n_barrier_cbs);
@@ -1578,7 +1578,7 @@ static int rcu_torture_barrier(void *arg) 
		n_barrier_successes++;

		schedule_timeout_interruptible(HZ / 10);

	} while (!kthread_should_stop() && fullstop == FULLSTOP_DONTSTOP);

	VERBOSE_PRINTK_STRING("rcu_torture_barrier task stopping");

	VERBOSE_TOROUT_STRING("rcu_torture_barrier task stopping");

	rcutorture_shutdown_absorb("rcu_torture_barrier");

	while (!kthread_should_stop())

		schedule_timeout_interruptible(1);
@@ -1619,7 +1619,7 @@ static int rcu_torture_barrier_init(void) 
						   "rcu_torture_barrier_cbs");

		if (IS_ERR(barrier_cbs_tasks[i])) {

			ret = PTR_ERR(barrier_cbs_tasks[i]);

			VERBOSE_PRINTK_ERRSTRING("Failed to create rcu_torture_barrier_cbs");

			VERBOSE_TOROUT_ERRSTRING("Failed to create rcu_torture_barrier_cbs");

			barrier_cbs_tasks[i] = NULL;

			return ret;

		}
@@ -1628,7 +1628,7 @@ static int rcu_torture_barrier_init(void) 
				   "rcu_torture_barrier");

	if (IS_ERR(barrier_task)) {

		ret = PTR_ERR(barrier_task);

		VERBOSE_PRINTK_ERRSTRING("Failed to create rcu_torture_barrier");

		VERBOSE_TOROUT_ERRSTRING("Failed to create rcu_torture_barrier");

		barrier_task = NULL;

	}

	return 0;
@@ -1640,14 +1640,14 @@ static void rcu_torture_barrier_cleanup(void) 
	int i;



	if (barrier_task != NULL) {

		VERBOSE_PRINTK_STRING("Stopping rcu_torture_barrier task");

		VERBOSE_TOROUT_STRING("Stopping rcu_torture_barrier task");

		kthread_stop(barrier_task);

		barrier_task = NULL;

	}

	if (barrier_cbs_tasks != NULL) {

		for (i = 0; i < n_barrier_cbs; i++) {

			if (barrier_cbs_tasks[i] != NULL) {

				VERBOSE_PRINTK_STRING("Stopping rcu_torture_barrier_cbs task");

				VERBOSE_TOROUT_STRING("Stopping rcu_torture_barrier_cbs task");

				kthread_stop(barrier_cbs_tasks[i]);

				barrier_cbs_tasks[i] = NULL;

			}
@@ -1706,19 +1706,19 @@ rcu_torture_cleanup(void) 
	rcu_torture_barrier_cleanup();

	rcu_torture_stall_cleanup();

	if (stutter_task) {

		VERBOSE_PRINTK_STRING("Stopping rcu_torture_stutter task");

		VERBOSE_TOROUT_STRING("Stopping rcu_torture_stutter task");

		kthread_stop(stutter_task);

	}

	stutter_task = NULL;

	if (shuffler_task) {

		VERBOSE_PRINTK_STRING("Stopping rcu_torture_shuffle task");

		VERBOSE_TOROUT_STRING("Stopping rcu_torture_shuffle task");

		kthread_stop(shuffler_task);

		free_cpumask_var(shuffle_tmp_mask);

	}

	shuffler_task = NULL;



	if (writer_task) {

		VERBOSE_PRINTK_STRING("Stopping rcu_torture_writer task");

		VERBOSE_TOROUT_STRING("Stopping rcu_torture_writer task");

		kthread_stop(writer_task);

	}

	writer_task = NULL;
@@ -1726,7 +1726,7 @@ rcu_torture_cleanup(void) 
	if (reader_tasks) {

		for (i = 0; i < nrealreaders; i++) {

			if (reader_tasks[i]) {

				VERBOSE_PRINTK_STRING(

				VERBOSE_TOROUT_STRING(

					"Stopping rcu_torture_reader task");

				kthread_stop(reader_tasks[i]);

			}
@@ -1740,7 +1740,7 @@ rcu_torture_cleanup(void) 
	if (fakewriter_tasks) {

		for (i = 0; i < nfakewriters; i++) {

			if (fakewriter_tasks[i]) {

				VERBOSE_PRINTK_STRING(

				VERBOSE_TOROUT_STRING(

					"Stopping rcu_torture_fakewriter task");

				kthread_stop(fakewriter_tasks[i]);

			}
@@ -1751,13 +1751,13 @@ rcu_torture_cleanup(void) 
	}



	if (stats_task) {

		VERBOSE_PRINTK_STRING("Stopping rcu_torture_stats task");

		VERBOSE_TOROUT_STRING("Stopping rcu_torture_stats task");

		kthread_stop(stats_task);

	}

	stats_task = NULL;



	if (fqs_task) {

		VERBOSE_PRINTK_STRING("Stopping rcu_torture_fqs task");

		VERBOSE_TOROUT_STRING("Stopping rcu_torture_fqs task");

		kthread_stop(fqs_task);

	}

	fqs_task = NULL;
@@ -1768,7 +1768,7 @@ rcu_torture_cleanup(void) 
			rcutorture_booster_cleanup(i);

	}

	if (shutdown_task != NULL) {

		VERBOSE_PRINTK_STRING("Stopping rcu_torture_shutdown task");

		VERBOSE_TOROUT_STRING("Stopping rcu_torture_shutdown task");

		kthread_stop(shutdown_task);

	}

	shutdown_task = NULL;
@@ -1924,12 +1924,12 @@ rcu_torture_init(void) 


	/* Start up the kthreads. */



	VERBOSE_PRINTK_STRING("Creating rcu_torture_writer task");

	VERBOSE_TOROUT_STRING("Creating rcu_torture_writer task");

	writer_task = kthread_create(rcu_torture_writer, NULL,

				     "rcu_torture_writer");

	if (IS_ERR(writer_task)) {

		firsterr = PTR_ERR(writer_task);

		VERBOSE_PRINTK_ERRSTRING("Failed to create writer");

		VERBOSE_TOROUT_ERRSTRING("Failed to create writer");

		writer_task = NULL;

		goto unwind;

	}
@@ -1937,17 +1937,17 @@ rcu_torture_init(void) 
	fakewriter_tasks = kzalloc(nfakewriters * sizeof(fakewriter_tasks[0]),

				   GFP_KERNEL);

	if (fakewriter_tasks == NULL) {

		VERBOSE_PRINTK_ERRSTRING("out of memory");

		VERBOSE_TOROUT_ERRSTRING("out of memory");

		firsterr = -ENOMEM;

		goto unwind;

	}

	for (i = 0; i < nfakewriters; i++) {

		VERBOSE_PRINTK_STRING("Creating rcu_torture_fakewriter task");

		VERBOSE_TOROUT_STRING("Creating rcu_torture_fakewriter task");

		fakewriter_tasks[i] = kthread_run(rcu_torture_fakewriter, NULL,

						  "rcu_torture_fakewriter");

		if (IS_ERR(fakewriter_tasks[i])) {

			firsterr = PTR_ERR(fakewriter_tasks[i]);

			VERBOSE_PRINTK_ERRSTRING("Failed to create fakewriter");

			VERBOSE_TOROUT_ERRSTRING("Failed to create fakewriter");

			fakewriter_tasks[i] = NULL;

			goto unwind;

		}
@@ -1955,28 +1955,28 @@ rcu_torture_init(void) 
	reader_tasks = kzalloc(nrealreaders * sizeof(reader_tasks[0]),

			       GFP_KERNEL);

	if (reader_tasks == NULL) {

		VERBOSE_PRINTK_ERRSTRING("out of memory");

		VERBOSE_TOROUT_ERRSTRING("out of memory");

		firsterr = -ENOMEM;

		goto unwind;

	}

	for (i = 0; i < nrealreaders; i++) {

		VERBOSE_PRINTK_STRING("Creating rcu_torture_reader task");

		VERBOSE_TOROUT_STRING("Creating rcu_torture_reader task");

		reader_tasks[i] = kthread_run(rcu_torture_reader, NULL,

					      "rcu_torture_reader");

		if (IS_ERR(reader_tasks[i])) {

			firsterr = PTR_ERR(reader_tasks[i]);

			VERBOSE_PRINTK_ERRSTRING("Failed to create reader");

			VERBOSE_TOROUT_ERRSTRING("Failed to create reader");

			reader_tasks[i] = NULL;

			goto unwind;

		}

	}

	if (stat_interval > 0) {

		VERBOSE_PRINTK_STRING("Creating rcu_torture_stats task");

		VERBOSE_TOROUT_STRING("Creating rcu_torture_stats task");

		stats_task = kthread_run(rcu_torture_stats, NULL,

					"rcu_torture_stats");

		if (IS_ERR(stats_task)) {

			firsterr = PTR_ERR(stats_task);

			VERBOSE_PRINTK_ERRSTRING("Failed to create stats");

			VERBOSE_TOROUT_ERRSTRING("Failed to create stats");

			stats_task = NULL;

			goto unwind;

		}
@@ -1986,7 +1986,7 @@ rcu_torture_init(void) 


		if (!alloc_cpumask_var(&shuffle_tmp_mask, GFP_KERNEL)) {

			firsterr = -ENOMEM;

			VERBOSE_PRINTK_ERRSTRING("Failed to alloc mask");

			VERBOSE_TOROUT_ERRSTRING("Failed to alloc mask");

			goto unwind;

		}
@@ -1996,7 +1996,7 @@ rcu_torture_init(void) 
		if (IS_ERR(shuffler_task)) {

			free_cpumask_var(shuffle_tmp_mask);

			firsterr = PTR_ERR(shuffler_task);

			VERBOSE_PRINTK_ERRSTRING("Failed to create shuffler");

			VERBOSE_TOROUT_ERRSTRING("Failed to create shuffler");

			shuffler_task = NULL;

			goto unwind;

		}
@@ -2009,7 +2009,7 @@ rcu_torture_init(void) 
					  "rcu_torture_stutter");

		if (IS_ERR(stutter_task)) {

			firsterr = PTR_ERR(stutter_task);

			VERBOSE_PRINTK_ERRSTRING("Failed to create stutter");

			VERBOSE_TOROUT_ERRSTRING("Failed to create stutter");

			stutter_task = NULL;

			goto unwind;

		}
@@ -2022,7 +2022,7 @@ rcu_torture_init(void) 
				       "rcu_torture_fqs");

		if (IS_ERR(fqs_task)) {

			firsterr = PTR_ERR(fqs_task);

			VERBOSE_PRINTK_ERRSTRING("Failed to create fqs");

			VERBOSE_TOROUT_ERRSTRING("Failed to create fqs");

			fqs_task = NULL;

			goto unwind;

		}
@@ -2052,7 +2052,7 @@ rcu_torture_init(void) 
					       "rcu_torture_shutdown");

		if (IS_ERR(shutdown_task)) {

			firsterr = PTR_ERR(shutdown_task);

			VERBOSE_PRINTK_ERRSTRING("Failed to create shutdown");

			VERBOSE_TOROUT_ERRSTRING("Failed to create shutdown");

			shutdown_task = NULL;

			goto unwind;

		}