[PATCH 12/17] kernel/cpu.c: fix init_cpu_online
From: Yury Norov <yury.norov@gmail.com>
Date: 2021-12-18 21:22:07
Also in:
kvm, linux-crypto, linux-mips, linux-mm, linux-perf-users, linux-riscv, linux-s390, lkml
Subsystem:
cpu hotplug, the rest · Maintainers:
Thomas Gleixner, Peter Zijlstra, Linus Torvalds
cpu_online_mask has an associate counter of online cpus, which should be initialized in init_cpu_online() Fixes: 0c09ab96fc82010 (cpu/hotplug: Cache number of online CPUs) Signed-off-by: Yury Norov <yury.norov@gmail.com> --- kernel/cpu.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 407a2568f35e..cd7605204d4d 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c@@ -2616,6 +2616,7 @@ void init_cpu_possible(const struct cpumask *src) void init_cpu_online(const struct cpumask *src) { cpumask_copy(&__cpu_online_mask, src); + atomic_set(&__num_online_cpus, cpumask_weight(cpu_online_mask)); } void set_cpu_online(unsigned int cpu, bool online)
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2.30.2