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>,
Joel Fernandes <joelagnelf@nvidia.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
bpf@vger.kernel.org
Subject: [PATCH v2 3/6] srcu: Add guards for notrace variants of SRCU-fast readers
Date: Thu, 18 Sep 2025 03:26:43 -0700 [thread overview]
Message-ID: <20250918102646.2592821-3-paulmck@kernel.org> (raw)
In-Reply-To: <89b6f92e-2aa6-4869-ad4f-47bb3fbadfbb@paulmck-laptop>
This adds the usual scoped_guard(srcu_fast_notrace, &my_srcu) and
guard(srcu_fast_notrace)(&my_srcu).
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: <bpf@vger.kernel.org>
---
include/linux/srcu.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/srcu.h b/include/linux/srcu.h
index 7a692bf8f99b96..ada65b58bc4c5f 100644
--- a/include/linux/srcu.h
+++ b/include/linux/srcu.h
@@ -515,4 +515,9 @@ DEFINE_LOCK_GUARD_1(srcu_fast, struct srcu_struct,
srcu_read_unlock_fast(_T->lock, _T->scp),
struct srcu_ctr __percpu *scp)
+DEFINE_LOCK_GUARD_1(srcu_fast_notrace, struct srcu_struct,
+ _T->scp = srcu_read_lock_fast_notrace(_T->lock),
+ srcu_read_unlock_fast_notrace(_T->lock, _T->scp),
+ struct srcu_ctr __percpu *scp)
+
#endif
--
2.40.1
next prev parent reply other threads:[~2025-09-18 10:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-18 10:26 [PATCH v7 0/6] Provide RCU changes needed to switch __DECLARE_TRACE() to SRCU for -rt Paul E. McKenney
2025-09-18 10:26 ` [PATCH v2 1/6] srcu: Move rcu_is_watching() checks to srcu_read_{,un}lock_fast() Paul E. McKenney
2025-09-18 10:26 ` [PATCH v2 2/6] srcu: Add srcu_read_lock_fast_notrace() and srcu_read_unlock_fast_notrace() Paul E. McKenney
2025-09-18 10:26 ` Paul E. McKenney [this message]
2025-09-18 10:26 ` [PATCH v2 4/6] srcu: Document __srcu_read_{,un}lock_fast() implicit RCU readers Paul E. McKenney
2025-09-18 10:26 ` [PATCH v2 5/6] srcu: Document srcu_flip() memory-barrier D relation to SRCU-fast Paul E. McKenney
2025-09-18 10:26 ` [PATCH v2 6/6] srcu/tiny: Remove preempt_disable/enable() in srcu_gp_start_if_needed() Paul E. McKenney
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