From: Joel Fernandes <joelagnelf@nvidia.com>
To: "Paul E. McKenney" <paulmck@kernel.org>
Cc: rcu@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-team@meta.com, rostedt@goodmis.org,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: Re: [PATCH v3 3/4] srcu: Add guards for notrace variants of SRCU-fast readers
Date: Tue, 22 Jul 2025 18:16:25 -0400 [thread overview]
Message-ID: <20250722221625.GA377653@joelbox2> (raw)
In-Reply-To: <20250721162433.10454-3-paulmck@kernel.org>
On Mon, Jul 21, 2025 at 09:24:32AM -0700, Paul E. McKenney wrote:
> 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>
thanks,
- Joel
> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
> Cc: Steven Rostedt <rostedt@goodmis.org>
> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> ---
> include/linux/srcu.h | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/include/linux/srcu.h b/include/linux/srcu.h
> index 7a692bf8f99b9..ada65b58bc4c5 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:[~2025-07-22 22:16 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-21 16:24 [PATCH v3 0/4] Switch __DECLARE_TRACE() to notrace variant of SRCU-fast Paul E. McKenney
2025-07-21 16:24 ` [PATCH v3 1/4] srcu: Move rcu_is_watching() checks to srcu_read_{,un}lock_fast() Paul E. McKenney
2025-07-22 22:04 ` Joel Fernandes
2025-07-21 16:24 ` [PATCH v3 2/4] srcu: Add srcu_read_lock_fast_notrace() and srcu_read_unlock_fast_notrace() Paul E. McKenney
2025-07-22 22:11 ` Joel Fernandes
2025-07-22 22:34 ` Paul E. McKenney
2025-07-22 22:47 ` Steven Rostedt
2025-07-22 22:51 ` Paul E. McKenney
2025-07-23 15:23 ` Mathieu Desnoyers
2025-07-23 16:28 ` Paul E. McKenney
2025-07-21 16:24 ` [PATCH v3 3/4] srcu: Add guards for notrace variants of SRCU-fast readers Paul E. McKenney
2025-07-22 22:16 ` Joel Fernandes [this message]
2025-07-21 16:24 ` [PATCH v3 4/4] tracing: Guard __DECLARE_TRACE() use of __DO_TRACE_CALL() with SRCU-fast Paul E. McKenney
2025-07-22 22:16 ` [PATCH v3 5/4] srcu: Document __srcu_read_{,un}lock_fast() implicit RCU readers Paul E. McKenney
2025-07-23 13:32 ` Joel Fernandes
2025-07-23 16:10 ` Joel Fernandes
2025-07-23 16:24 ` Paul E. McKenney
2025-07-22 22:17 ` [PATCH v3 6/4] srcu: Document srcu_flip() memory-barrier D relation to SRCU-fast Paul E. McKenney
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