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, Ankur Arora <ankur.a.arora@oracle.com>,
"Paul E . McKenney" <paulmck@kernel.org>,
Frederic Weisbecker <frederic@kernel.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: [PATCH rcu v2] 1/9] rcu: fix header guard for rcu_all_qs()
Date: Thu, 30 Jan 2025 10:55:14 -0800 [thread overview]
Message-ID: <20250130185522.1652093-1-paulmck@kernel.org> (raw)
In-Reply-To: <9bc6e5fe-d49f-495a-9f55-537ed97a3615@paulmck-laptop>
From: Ankur Arora <ankur.a.arora@oracle.com>
rcu_all_qs() is defined for !CONFIG_PREEMPT_RCU but the declaration
is conditioned on CONFIG_PREEMPTION.
With CONFIG_PREEMPT_LAZY, CONFIG_PREEMPTION=y does not imply
CONFIG_PREEMPT_RCU=y.
Decouple the two.
Cc: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
include/linux/rcutree.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index 27d86d912781..aad586f15ed0 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -103,7 +103,7 @@ extern int rcu_scheduler_active;
void rcu_end_inkernel_boot(void);
bool rcu_inkernel_boot_has_ended(void);
bool rcu_is_watching(void);
-#ifndef CONFIG_PREEMPTION
+#ifndef CONFIG_PREEMPT_RCU
void rcu_all_qs(void);
#endif
--
2.40.1
next prev parent reply other threads:[~2025-01-30 18:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-16 20:13 [PATCH rcu 0/9] Lazy-preemption-related updates Paul E. McKenney
2025-01-16 20:13 ` [PATCH rcu 1/9] rcu: fix header guard for rcu_all_qs() Paul E. McKenney
2025-01-16 20:13 ` [PATCH rcu 2/9] rcu: rename PREEMPT_AUTO to PREEMPT_LAZY Paul E. McKenney
2025-01-16 20:13 ` [PATCH rcu 3/9] sched: update __cond_resched comment about RCU quiescent states Paul E. McKenney
2025-01-16 20:13 ` [PATCH rcu 4/9] rcu: handle unstable rdp in rcu_read_unlock_strict() Paul E. McKenney
2025-01-16 20:13 ` [PATCH rcu 5/9] rcu: handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y Paul E. McKenney
2025-01-16 20:13 ` [PATCH rcu 6/9] osnoise: provide quiescent states Paul E. McKenney
2025-01-16 20:13 ` [PATCH rcu 7/9] rcu: limit PREEMPT_RCU configurations Paul E. McKenney
2025-01-16 20:13 ` [PATCH rcu 8/9] rcutorture: Make scenario TREE10 build CONFIG_PREEMPT_LAZY=y Paul E. McKenney
2025-01-16 20:13 ` [PATCH rcu 9/9] rcutorture: Make scenario TREE07 " Paul E. McKenney
2025-01-30 18:55 ` [PATCH rcu 0/9] Lazy-preemption-related updates Paul E. McKenney
2025-01-30 18:55 ` Paul E. McKenney [this message]
2025-01-30 18:55 ` [PATCH rcu v2] 2/9] rcu: rename PREEMPT_AUTO to PREEMPT_LAZY Paul E. McKenney
2025-01-30 18:55 ` [PATCH rcu v2] 3/9] sched: update __cond_resched comment about RCU quiescent states Paul E. McKenney
2025-01-30 18:55 ` [PATCH rcu v2] 4/9] rcu: handle unstable rdp in rcu_read_unlock_strict() Paul E. McKenney
2025-01-30 18:55 ` [PATCH rcu v2] 5/9] rcu: handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y Paul E. McKenney
2025-01-30 18:55 ` [PATCH rcu v2] 6/9] osnoise: provide quiescent states Paul E. McKenney
2025-01-30 18:55 ` [PATCH rcu v2] 7/9] rcu: limit PREEMPT_RCU configurations Paul E. McKenney
2025-01-30 18:55 ` [PATCH rcu v2] 8/9] rcutorture: Make scenario TREE10 build CONFIG_PREEMPT_LAZY=y Paul E. McKenney
2025-01-30 18:55 ` [PATCH rcu v2] 9/9] rcutorture: Make scenario TREE07 " Paul E. McKenney
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250130185522.1652093-1-paulmck@kernel.org \
--to=paulmck@kernel.org \
--cc=ankur.a.arora@oracle.com \
--cc=bigeasy@linutronix.de \
--cc=frederic@kernel.org \
--cc=kernel-team@meta.com \
--cc=linux-kernel@vger.kernel.org \
--cc=rcu@vger.kernel.org \
--cc=rostedt@goodmis.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox