From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: linux-kernel@vger.kernel.org
Cc: tglx@linutronix.de, Peter Zijlstra <peterz@infradead.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Jiri Kosina <jikos@kernel.org>, Miroslav Benes <mbenes@suse.cz>,
Petr Mladek <pmladek@suse.com>,
Joe Lawrence <joe.lawrence@redhat.com>,
live-patching@vger.kernel.org
Subject: [PATCH 26/38] livepatch: Replace deprecated CPU-hotplug functions.
Date: Tue, 3 Aug 2021 16:16:09 +0200 [thread overview]
Message-ID: <20210803141621.780504-27-bigeasy@linutronix.de> (raw)
In-Reply-To: <20210803141621.780504-1-bigeasy@linutronix.de>
The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().
Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Miroslav Benes <mbenes@suse.cz>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: live-patching@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
kernel/livepatch/transition.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/livepatch/transition.c b/kernel/livepatch/transition.c
index 3a4beb9395c48..291b857a6e201 100644
--- a/kernel/livepatch/transition.c
+++ b/kernel/livepatch/transition.c
@@ -411,7 +411,7 @@ void klp_try_complete_transition(void)
/*
* Ditto for the idle "swapper" tasks.
*/
- get_online_cpus();
+ cpus_read_lock();
for_each_possible_cpu(cpu) {
task = idle_task(cpu);
if (cpu_online(cpu)) {
@@ -423,7 +423,7 @@ void klp_try_complete_transition(void)
task->patch_state = klp_target_state;
}
}
- put_online_cpus();
+ cpus_read_unlock();
if (!complete) {
if (klp_signals_cnt && !(klp_signals_cnt % SIGNALS_TIMEOUT))
--
2.32.0
next prev parent reply other threads:[~2021-08-03 14:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-03 14:15 [PATCH 00/38] Replace deprecated CPU-hotplug Sebastian Andrzej Siewior
2021-08-03 14:16 ` Sebastian Andrzej Siewior [this message]
2021-08-04 7:52 ` [PATCH 26/38] livepatch: Replace deprecated CPU-hotplug functions Petr Mladek
2021-08-19 10:01 ` Jiri Kosina
2021-08-03 15:30 ` [PATCH 00/38] Replace deprecated CPU-hotplug Hans de Goede
2021-08-03 16:10 ` Sebastian Andrzej Siewior
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