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rcutorture: Use rcu_gp_slow_register/unregister() only for rcutype test

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The rcu_gp_slow_register/unregister() is only useful in tests where
torture_type=rcu, so this commit therefore generates ->gp_slow_register()
and ->gp_slow_unregister() function pointers in the rcu_torture_ops
structure, and slows grace periods only when these function pointers
exist.

Signed-off-by: Zqiang <qiang.zhang1211@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
This commit is contained in:
Zqiang 2024-03-29 12:52:45 +08:00 committed by Uladzislau Rezki (Sony)
parent 39988fdc12
commit 1c67318b3d
1 changed files with 10 additions and 4 deletions
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14
kernel/rcu/rcutorture.c
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@ -382,6 +382,8 @@ struct rcu_torture_ops {
bool (*check_boost_failed)(unsigned long gp_state, int *cpup);
int (*stall_dur)(void);
void (*get_gp_data)(int *flags, unsigned long *gp_seq);
void (*gp_slow_register)(atomic_t *rgssp);
void (*gp_slow_unregister)(atomic_t *rgssp);
long cbflood_max;
int irq_capable;
int can_boost;
@ -570,6 +572,8 @@ static struct rcu_torture_ops rcu_ops = {
.check_boost_failed = rcu_check_boost_fail,
.stall_dur = rcu_jiffies_till_stall_check,
.get_gp_data = rcutorture_get_gp_data,
.gp_slow_register = rcu_gp_slow_register,
.gp_slow_unregister = rcu_gp_slow_unregister,
.irq_capable = 1,
.can_boost = IS_ENABLED(CONFIG_RCU_BOOST),
.extendables = RCUTORTURE_MAX_EXTEND,
@ -3343,12 +3347,12 @@ rcu_torture_cleanup(void)
pr_info("%s: Invoking %pS().\n", __func__, cur_ops->cb_barrier);
cur_ops->cb_barrier();
}
rcu_gp_slow_unregister(NULL);
if (cur_ops->gp_slow_unregister)
cur_ops->gp_slow_unregister(NULL);
return;
}
if (!cur_ops) {
torture_cleanup_end();
rcu_gp_slow_unregister(NULL);
return;
}
@ -3447,7 +3451,8 @@ rcu_torture_cleanup(void)
else
rcu_torture_print_module_parms(cur_ops, "End of test: SUCCESS");
torture_cleanup_end();
rcu_gp_slow_unregister(&rcu_fwd_cb_nodelay);
if (cur_ops->gp_slow_unregister)
cur_ops->gp_slow_unregister(NULL);
}
#ifdef CONFIG_DEBUG_OBJECTS_RCU_HEAD
@ -3929,7 +3934,8 @@ rcu_torture_init(void)
if (object_debug)
rcu_test_debug_objects();
torture_init_end();
rcu_gp_slow_register(&rcu_fwd_cb_nodelay);
if (cur_ops->gp_slow_register && !WARN_ON_ONCE(!cur_ops->gp_slow_unregister))
cur_ops->gp_slow_register(&rcu_fwd_cb_nodelay);
return 0;
unwind: