From: "Paul E. McKenney" <paulmck@kernel.org>
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com,
rostedt@goodmis.org, "Paul E. McKenney" <paulmck@kernel.org>
Subject: [PATCH rcu 10/13] rcuscale: Add RCU Tasks Rude testing
Date: Mon, 17 Jul 2023 11:11:35 -0700 [thread overview]
Message-ID: <20230717181138.1098063-10-paulmck@kernel.org> (raw)
In-Reply-To: <c5a593d3-abe0-40fd-92bd-28d269042aa1@paulmck-laptop>
Add a "tasks-rude" option to the rcuscale.scale_type module parameter.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
kernel/rcu/rcu.h | 3 ++
kernel/rcu/rcuscale.c | 31 ++++++++++++++++++-
kernel/rcu/tasks.h | 7 +++++
.../rcutorture/configs/rcuscale/CFcommon | 2 ++
4 files changed, 42 insertions(+), 1 deletion(-)
diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h
index d58bc0e86769..9829d8161b21 100644
--- a/kernel/rcu/rcu.h
+++ b/kernel/rcu/rcu.h
@@ -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 */
diff --git a/kernel/rcu/rcuscale.c b/kernel/rcu/rcuscale.c
index 35e06c86acc9..5ce3b4e7ce71 100644
--- a/kernel/rcu/rcuscale.c
+++ b/kernel/rcu/rcuscale.c
@@ -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))
diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h
index 0f03de023097..0372c5cbc83b 100644
--- a/kernel/rcu/tasks.h
+++ b/kernel/rcu/tasks.h
@@ -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 */
////////////////////////////////////////////////////////////////////////
diff --git a/tools/testing/selftests/rcutorture/configs/rcuscale/CFcommon b/tools/testing/selftests/rcutorture/configs/rcuscale/CFcommon
index 6a00157bee5b..b1ffd7c67604 100644
--- a/tools/testing/selftests/rcutorture/configs/rcuscale/CFcommon
+++ b/tools/testing/selftests/rcutorture/configs/rcuscale/CFcommon
@@ -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
--
2.40.1
next prev parent reply other threads:[~2023-07-17 18:12 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-17 18:08 [PATCH rcu 0/13] RCU update-side scalability test updates for v6.6 Paul E. McKenney
2023-07-17 18:11 ` [PATCH rcu 01/13] rcuscale: Permit blocking delays between writers Paul E. McKenney
2023-07-17 18:11 ` [PATCH rcu 02/13] rcuscale: Fix gp_async_max typo: s/reader/writer/ Paul E. McKenney
2023-07-17 18:11 ` [PATCH rcu 03/13] rcuscale: Add minruntime module parameter Paul E. McKenney
2023-07-17 18:11 ` [PATCH rcu 04/13] rcuscale: Print out full set of module parameters Paul E. McKenney
2023-07-17 18:11 ` [PATCH rcu 05/13] rcuscale: Print out full set of kfree_rcu parameters Paul E. McKenney
2023-07-17 18:11 ` [PATCH rcu 06/13] rcuscale: Measure grace-period kthread CPU time Paul E. McKenney
2023-07-17 18:11 ` [PATCH rcu 07/13] rcuscale: Add kfree_by_call_rcu and kfree_mult to documentation Paul E. McKenney
2023-07-17 18:11 ` [PATCH rcu 08/13] rcuscale: Print grace-period kthread CPU time, if recorded Paul E. McKenney
2023-07-17 18:11 ` [PATCH rcu 09/13] rcuscale: Measure RCU Tasks Trace grace-period kthread CPU time Paul E. McKenney
2023-07-17 18:11 ` Paul E. McKenney [this message]
2023-07-17 18:11 ` [PATCH rcu 11/13] rcuscale: fix building with RCU_TINY Paul E. McKenney
2023-07-17 18:11 ` [PATCH rcu 12/13] rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle() Paul E. McKenney
2023-07-17 18:11 ` [PATCH rcu 13/13] rcuscale: Add CONFIG_PREEMPT_DYNAMIC=n to TRACE01 scenario Paul E. McKenney
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