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bpf: Remove migrate_{disable,enable} in bpf_cpumask_release()

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When BPF program invokes bpf_cpumask_release(), the migration must have
been disabled. When bpf_cpumask_release_dtor() invokes
bpf_cpumask_release(), the caller bpf_obj_free_fields() also has
disabled migration, therefore, it is OK to remove the unnecessary
migrate_{disable|enable} pair in bpf_cpumask_release().

Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20250108010728.207536-13-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Hou Tao 2025-01-08 09:07:24 +08:00 committed by Alexei Starovoitov
parent 1d2dbe7120
commit 6a52b965ab
1 changed files with 0 additions and 2 deletions
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2
kernel/bpf/cpumask.c
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@ -91,9 +91,7 @@ __bpf_kfunc void bpf_cpumask_release(struct bpf_cpumask *cpumask)
if (!refcount_dec_and_test(&cpumask->usage))
return;
migrate_disable();
bpf_mem_cache_free_rcu(&bpf_cpumask_ma, cpumask);
migrate_enable();
}
__bpf_kfunc void bpf_cpumask_release_dtor(void *cpumask)