diff options
| author | Huacai Chen <chenhuacai@loongson.cn> | 2022-05-31 12:04:12 +0200 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2022-06-03 14:09:29 +0200 |
| commit | 46859ac8af52ae599e1b51992ddef3eb43f295fc (patch) | |
| tree | c1e6640316d5d8748bea046b71d2260b81cbe314 /arch/loongarch/kernel/reset.c | |
| parent | LoongArch: Add VDSO and VSYSCALL support (diff) | |
| download | linux-46859ac8af52ae599e1b51992ddef3eb43f295fc.tar.xz linux-46859ac8af52ae599e1b51992ddef3eb43f295fc.zip | |
LoongArch: Add multi-processor (SMP) support
LoongArch-based procesors have 4, 8 or 16 cores per package. This patch
adds multi-processor (SMP) support for LoongArch.
Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/kernel/reset.c')
| -rw-r--r-- | arch/loongarch/kernel/reset.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/loongarch/kernel/reset.c b/arch/loongarch/kernel/reset.c index ef484ce43c5c..2b86469e4718 100644 --- a/arch/loongarch/kernel/reset.c +++ b/arch/loongarch/kernel/reset.c @@ -65,16 +65,28 @@ EXPORT_SYMBOL(pm_power_off); void machine_halt(void) { +#ifdef CONFIG_SMP + preempt_disable(); + smp_send_stop(); +#endif default_halt(); } void machine_power_off(void) { +#ifdef CONFIG_SMP + preempt_disable(); + smp_send_stop(); +#endif pm_power_off(); } void machine_restart(char *command) { +#ifdef CONFIG_SMP + preempt_disable(); + smp_send_stop(); +#endif do_kernel_restart(command); pm_restart(); } |