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| author | Song Shuai <songshuaishuai@tinylab.org> | 2023-06-09 10:50:47 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2023-06-21 15:33:49 +0300 |
| commit | 615af0021a612ea66312a5deddd39cc0d8b70e78 (patch) | |
| tree | e4b599817364b3e597c1a3f50dfae61c262f0a56 /arch/arm64/kernel/hibernate.c | |
| parent | af3215fd02308c9aa982a028284d6414eeb60c04 (diff) | |
| download | linux-615af0021a612ea66312a5deddd39cc0d8b70e78.tar.xz | |
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>
Diffstat (limited to 'arch/arm64/kernel/hibernate.c')
| -rw-r--r-- | arch/arm64/kernel/hibernate.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.c index 788597a6b6a2..02870beb271e 100644 --- a/arch/arm64/kernel/hibernate.c +++ b/arch/arm64/kernel/hibernate.c @@ -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) |