Commit 72bb749e authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

refperf: Add test for RCU Tasks Trace readers. 



This commit adds testing for RCU Tasks Trace readers to the refperf module.

Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent 918b351d

kernel/rcu/refperf.c

+31 −2
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 
#include <linux/notifier.h>

#include <linux/percpu.h>

#include <linux/rcupdate.h>

#include <linux/rcupdate_trace.h>

#include <linux/reboot.h>

#include <linux/sched.h>

#include <linux/spinlock.h>
@@ -157,7 +158,6 @@ static struct ref_perf_ops rcu_ops = { 
	.name		= "rcu"

};





// Definitions for SRCU ref perf testing.

DEFINE_STATIC_SRCU(srcu_refctl_perf);

static struct srcu_struct *srcu_ctlp = &srcu_refctl_perf;
@@ -192,6 +192,35 @@ static struct ref_perf_ops srcu_ops = { 
	.name		= "srcu"

};



// Definitions for RCU Tasks Trace ref perf testing.

static void rcu_trace_ref_perf_read_section(const int nloops)

{

	int i;



	for (i = nloops; i >= 0; i--) {

		rcu_read_lock_trace();

		rcu_read_unlock_trace();

	}

}



static void rcu_trace_ref_perf_delay_section(const int nloops, const int udl, const int ndl)

{

	int i;



	for (i = nloops; i >= 0; i--) {

		rcu_read_lock_trace();

		un_delay(udl, ndl);

		rcu_read_unlock_trace();

	}

}



static struct ref_perf_ops rcu_trace_ops = {

	.init		= rcu_sync_perf_init,

	.readsection	= rcu_trace_ref_perf_read_section,

	.delaysection	= rcu_trace_ref_perf_delay_section,

	.name		= "rcu-trace"

};



// Definitions for reference count

static atomic_t refcnt;
@@ -584,7 +613,7 @@ ref_perf_init(void) 
	long i;

	int firsterr = 0;

	static struct ref_perf_ops *perf_ops[] = {

		&rcu_ops, &srcu_ops, &refcnt_ops, &rwlock_ops, &rwsem_ops,

		&rcu_ops, &srcu_ops, &rcu_trace_ops, &refcnt_ops, &rwlock_ops, &rwsem_ops,

	};



	if (!torture_init_begin(perf_type, verbose))