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arm64: hibernate: remove WARN_ON in save_processor_state 

During hibernation or restoration, freeze_secondary_cpus
checks num_online_cpus via BUG_ON, and the subsequent
save_processor_state also does the checking with WARN_ON.

In the case of CONFIG_PM_SLEEP_SMP=n, freeze_secondary_cpus
is not defined, but the sole possible condition to disable
CONFIG_PM_SLEEP_SMP is !SMP where num_online_cpus is always 1.
We also don't have to check it in save_processor_state.

So remove the unnecessary checking in save_processor_state.

Signed-off-by: Song Shuai <songshuaishuai@tinylab.org>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20230609075049.2651723-3-songshuaishuai@tinylab.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Song Shuai 2023-06-09 15:50:47 +08:00 committed by Catalin Marinas
parent af3215fd02
commit 615af0021a
1 changed files with 0 additions and 1 deletions
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arch/arm64/kernel/hibernate.c
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@ -99,7 +99,6 @@ int pfn_is_nosave(unsigned long pfn)
void notrace save_processor_state(void)
{
WARN_ON(num_online_cpus() != 1);
}
void notrace restore_processor_state(void)