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x86/cpuid: Move the hotplug callbacks to online

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No point to have this file around before the cpu is online and no point to
have it around until the cpu is dead. Get rid of the explicit state.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
This commit is contained in:
Thomas Gleixner 2016-11-21 13:07:34 +01:00
parent 8c07b494ab
commit ee92be9b0d
2 changed files with 6 additions and 6 deletions
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11
arch/x86/kernel/cpuid.c
View file

@ -45,6 +45,7 @@
#include <asm/msr.h>
static struct class *cpuid_class;
static enum cpuhp_state cpuhp_cpuid_state;
struct cpuid_regs {
u32 eax, ebx, ecx, edx;
@ -152,11 +153,12 @@ static int __init cpuid_init(void)
}
cpuid_class->devnode = cpuid_devnode;
err = cpuhp_setup_state(CPUHP_X86_CPUID_PREPARE, "x86/cpuid:prepare",
err = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "x86/cpuid:online",
cpuid_device_create, cpuid_device_destroy);
if (err)
if (err < 0)
goto out_class;
cpuhp_cpuid_state = err;
return 0;
out_class:
@ -165,15 +167,14 @@ static int __init cpuid_init(void)
__unregister_chrdev(CPUID_MAJOR, 0, NR_CPUS, "cpu/cpuid");
return err;
}
module_init(cpuid_init);
static void __exit cpuid_exit(void)
{
cpuhp_remove_state(CPUHP_X86_CPUID_PREPARE);
cpuhp_remove_state(cpuhp_cpuid_state);
class_destroy(cpuid_class);
__unregister_chrdev(CPUID_MAJOR, 0, NR_CPUS, "cpu/cpuid");
}
module_init(cpuid_init);
module_exit(cpuid_exit);
MODULE_AUTHOR("H. Peter Anvin <hpa@zytor.com>");

1
include/linux/cpuhotplug.h
View file

@ -59,7 +59,6 @@ enum cpuhp_state {
CPUHP_BLK_MQ_PREPARE,
CPUHP_NET_FLOW_PREPARE,
CPUHP_TOPOLOGY_PREPARE,
CPUHP_X86_CPUID_PREPARE,
CPUHP_TIMERS_DEAD,
CPUHP_NOTF_ERR_INJ_PREPARE,
CPUHP_MIPS_SOC_PREPARE,