From b88a62302205efa903e183fdd77549394d932d69 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Aug 2021 16:15:54 +0200
Subject: [PATCH] perf/hw_breakpoint: Replace deprecated CPU-hotplug functions
References: bsc#1189998 (PREEMPT_RT prerequisite backports)
Patch-mainline: v5.15-rc1
Git-commit: ffec09f9c7d7b21b0aff29dd5c3972f4631c0b6b
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.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210803141621.780504-12-bigeasy@linutronix.de
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
kernel/events/hw_breakpoint.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c
index 835973444a1e..f32320ac02fd 100644
--- a/kernel/events/hw_breakpoint.c
+++ b/kernel/events/hw_breakpoint.c
@@ -568,7 +568,7 @@ register_wide_hw_breakpoint(struct perf_event_attr *attr,
if (!cpu_events)
return (void __percpu __force *)ERR_PTR(-ENOMEM);
- get_online_cpus();
+ cpus_read_lock();
for_each_online_cpu(cpu) {
bp = perf_event_create_kernel_counter(attr, cpu, NULL,
triggered, context);
@@ -579,7 +579,7 @@ register_wide_hw_breakpoint(struct perf_event_attr *attr,
per_cpu(*cpu_events, cpu) = bp;
}
- put_online_cpus();
+ cpus_read_unlock();
if (likely(!err))
return cpu_events;