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rcuscale: Add RCU Tasks Rude testing

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Add a "tasks-rude" option to the rcuscale.scale_type module parameter.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2023-06-03 09:07:44 -07:00
parent 271a8467a5
commit a15ec57cfc
4 changed files with 42 additions and 1 deletions
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3
kernel/rcu/rcu.h
View File

@ -508,6 +508,9 @@ void show_rcu_tasks_gp_kthreads(void);
# ifdef CONFIG_TASKS_RCU
struct task_struct *get_rcu_tasks_gp_kthread(void);
# endif // # ifdef CONFIG_TASKS_RCU
# ifdef CONFIG_TASKS_RUDE_RCU
struct task_struct *get_rcu_tasks_rude_gp_kthread(void);
# endif // # ifdef CONFIG_TASKS_RUDE_RCU
#else /* #ifdef CONFIG_TASKS_RCU_GENERIC */
static inline void show_rcu_tasks_gp_kthreads(void) {}
#endif /* #else #ifdef CONFIG_TASKS_RCU_GENERIC */

31
kernel/rcu/rcuscale.c
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@ -310,6 +310,35 @@ static struct rcu_scale_ops tasks_ops = {
#endif // #else // #ifdef CONFIG_TASKS_RCU
#ifdef CONFIG_TASKS_RUDE_RCU
/*
* Definitions for RCU-tasks-rude scalability testing.
*/
static struct rcu_scale_ops tasks_rude_ops = {
.ptype = RCU_TASKS_RUDE_FLAVOR,
.init = rcu_sync_scale_init,
.readlock = tasks_scale_read_lock,
.readunlock = tasks_scale_read_unlock,
.get_gp_seq = rcu_no_completed,
.gp_diff = rcu_seq_diff,
.async = call_rcu_tasks_rude,
.gp_barrier = rcu_barrier_tasks_rude,
.sync = synchronize_rcu_tasks_rude,
.exp_sync = synchronize_rcu_tasks_rude,
.rso_gp_kthread = get_rcu_tasks_rude_gp_kthread,
.name = "tasks-rude"
};
#define TASKS_RUDE_OPS &tasks_rude_ops,
#else // #ifdef CONFIG_TASKS_RUDE_RCU
#define TASKS_RUDE_OPS
#endif // #else // #ifdef CONFIG_TASKS_RUDE_RCU
#ifdef CONFIG_TASKS_TRACE_RCU
/*
@ -913,7 +942,7 @@ rcu_scale_init(void)
long i;
int firsterr = 0;
static struct rcu_scale_ops *scale_ops[] = {
&rcu_ops, &srcu_ops, &srcud_ops, TASKS_OPS TASKS_TRACING_OPS
&rcu_ops, &srcu_ops, &srcud_ops, TASKS_OPS TASKS_RUDE_OPS TASKS_TRACING_OPS
};
if (!torture_init_begin(scale_type, verbose))

7
kernel/rcu/tasks.h
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@ -1194,6 +1194,13 @@ void show_rcu_tasks_rude_gp_kthread(void)
}
EXPORT_SYMBOL_GPL(show_rcu_tasks_rude_gp_kthread);
#endif // !defined(CONFIG_TINY_RCU)
struct task_struct *get_rcu_tasks_rude_gp_kthread(void)
{
return rcu_tasks_rude.kthread_ptr;
}
EXPORT_SYMBOL_GPL(get_rcu_tasks_rude_gp_kthread);
#endif /* #ifdef CONFIG_TASKS_RUDE_RCU */
////////////////////////////////////////////////////////////////////////

2
tools/testing/selftests/rcutorture/configs/rcuscale/CFcommon
View File

@ -2,5 +2,7 @@ CONFIG_RCU_SCALE_TEST=y
CONFIG_PRINTK_TIME=y
CONFIG_FORCE_TASKS_RCU=y
#CHECK#CONFIG_TASKS_RCU=y
CONFIG_FORCE_TASKS_RUDE_RCU=y
#CHECK#CONFIG_TASKS_RUDE_RCU=y
CONFIG_FORCE_TASKS_TRACE_RCU=y
#CHECK#CONFIG_TASKS_TRACE_RCU=y