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refperf: Add test for RCU Tasks Trace readers.

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

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2020-06-02 08:34:41 -07:00
parent 918b351d96
commit 72bb749e70
1 changed files with 31 additions and 2 deletions
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33
kernel/rcu/refperf.c
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@ -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))