diff options
Diffstat (limited to 'arch/x86/kernel/cpuid.c')
| -rw-r--r-- | arch/x86/kernel/cpuid.c | 28 |
1 files changed, 7 insertions, 21 deletions
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c index f4548c93ccf..70dcf912d9f 100644 --- a/arch/x86/kernel/cpuid.c +++ b/arch/x86/kernel/cpuid.c @@ -43,8 +43,6 @@ static struct class *cpuid_class; -#ifdef CONFIG_SMP - struct cpuid_command { u32 reg; u32 *data; @@ -62,25 +60,11 @@ static inline void do_cpuid(int cpu, u32 reg, u32 * data) { struct cpuid_command cmd; - preempt_disable(); - if (cpu == smp_processor_id()) { - cpuid(reg, &data[0], &data[1], &data[2], &data[3]); - } else { - cmd.reg = reg; - cmd.data = data; + cmd.reg = reg; + cmd.data = data; - smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1); - } - preempt_enable(); + smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1); } -#else /* ! CONFIG_SMP */ - -static inline void do_cpuid(int cpu, u32 reg, u32 * data) -{ - cpuid(reg, &data[0], &data[1], &data[2], &data[3]); -} - -#endif /* ! CONFIG_SMP */ static loff_t cpuid_seek(struct file *file, loff_t offset, int orig) { @@ -150,7 +134,7 @@ static const struct file_operations cpuid_fops = { .open = cpuid_open, }; -static int cpuid_device_create(int i) +static int __cpuinit cpuid_device_create(int i) { int err = 0; struct device *dev; @@ -161,7 +145,9 @@ static int cpuid_device_create(int i) return err; } -static int cpuid_class_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) +static int __cpuinit cpuid_class_cpu_callback(struct notifier_block *nfb, + unsigned long action, + void *hcpu) { unsigned int cpu = (unsigned long)hcpu; |