[PATCH RFC 6/4] srcu: Add guards for SRCU-fast readers
From: "Paul E. McKenney" <paulmck@kernel.org>
Date: 2025-07-17 19:04:46
Also in:
bpf, linux-rt-devel, rcu
Subsystem:
sleepable read-copy update (srcu), the rest · Maintainers:
Lai Jiangshan, "Paul E. McKenney", Josh Triplett, Linus Torvalds
This adds the usual scoped_guard(srcu_fast, &my_srcu) and guard(srcu_fast)(&my_srcu). Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- srcu.h | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/include/linux/srcu.h b/include/linux/srcu.h
index 0aa2376cca0b1..ada65b58bc4c5 100644
--- a/include/linux/srcu.h
+++ b/include/linux/srcu.h@@ -510,6 +510,11 @@ DEFINE_LOCK_GUARD_1(srcu, struct srcu_struct, srcu_read_unlock(_T->lock, _T->idx), int idx) +DEFINE_LOCK_GUARD_1(srcu_fast, struct srcu_struct, + _T->scp = srcu_read_lock_fast(_T->lock), + 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),