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| author |   Huacai Chen <chenhuacai@loongson.cn> | 2022-05-31 18:04:12 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2022-06-03 20:09:29 +0800 |
| commit | 46859ac8af52ae599e1b51992ddef3eb43f295fc (patch) | |
| tree | c1e6640316d5d8748bea046b71d2260b81cbe314 /arch/loongarch/kernel/proc.c | |
| parent | LoongArch: Add VDSO and VSYSCALL support (diff) | |
| download | linux-dev-46859ac8af52ae599e1b51992ddef3eb43f295fc.tar.xz linux-dev-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/proc.c')
| -rw-r--r-- | arch/loongarch/kernel/proc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/loongarch/kernel/proc.c b/arch/loongarch/kernel/proc.c index d25592a29196..1effc73850fe 100644 --- a/arch/loongarch/kernel/proc.c +++ b/arch/loongarch/kernel/proc.c @@ -35,6 +35,11 @@ static int show_cpuinfo(struct seq_file *m, void *v) unsigned int fp_version = cpu_data[n].fpu_vers; struct proc_cpuinfo_notifier_args proc_cpuinfo_notifier_args; +#ifdef CONFIG_SMP + if (!cpu_online(n)) + return 0; +#endif + /* * For the first processor also print the system type */ |