diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2016-11-10 20:44:47 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-11-16 11:34:18 +0300 |
| commit | 0e285d36bd2bfee0b95433ccc9065c878164f5b2 (patch) | |
| tree | 4fe091e6793890fffcd686ff09ef7669774d38e4 | |
| parent | 8c0eeac819c85e4c1143f7a874d87b4594739208 (diff) | |
| download | linux-0e285d36bd2bfee0b95433ccc9065c878164f5b2.tar.xz | |
x86/mcheck: Move CPU_DEAD to hotplug state machine
This moves the last piece of the old hotplug notifier code in MCE to the
new hotplug state machine.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: rt@linutronix.de
Cc: linux-edac@vger.kernel.org
Link: http://lkml.kernel.org/r/20161110174447.11848-8-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 42 | ||||
| -rw-r--r-- | include/linux/cpuhotplug.h | 1 |
2 files changed, 16 insertions, 27 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 78955f501ff2..b888e2f6af41 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -2506,26 +2506,14 @@ static void mce_reenable_cpu(void) } } -/* Get notified when a cpu comes on/off. Be hotplug friendly. */ -static int -mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) +static int mce_cpu_dead(unsigned int cpu) { - unsigned int cpu = (unsigned long)hcpu; + mce_intel_hcpu_update(cpu); - switch (action & ~CPU_TASKS_FROZEN) { - case CPU_DEAD: - mce_intel_hcpu_update(cpu); - - /* intentionally ignoring frozen here */ - if (!(action & CPU_TASKS_FROZEN)) - cmci_rediscover(); - break; - case CPU_DOWN_PREPARE: - - break; - } - - return NOTIFY_OK; + /* intentionally ignoring frozen here */ + if (!cpuhp_tasks_frozen) + cmci_rediscover(); + return 0; } static int mce_cpu_online(unsigned int cpu) @@ -2556,10 +2544,6 @@ static int mce_cpu_pre_down(unsigned int cpu) return 0; } -static struct notifier_block mce_cpu_notifier = { - .notifier_call = mce_cpu_callback, -}; - static __init void mce_init_banks(void) { int i; @@ -2599,16 +2583,17 @@ static __init int mcheck_init_device(void) if (err) goto err_out_mem; + err = cpuhp_setup_state(CPUHP_X86_MCE_DEAD, "x86/mce:dead", NULL, + mce_cpu_dead); + if (err) + goto err_out_mem; + err = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "x86/mce:online", mce_cpu_online, mce_cpu_pre_down); if (err < 0) - goto err_out_mem; + goto err_out_online; hp_online = err; - cpu_notifier_register_begin(); - __register_hotcpu_notifier(&mce_cpu_notifier); - cpu_notifier_register_done(); - register_syscore_ops(&mce_syscore_ops); /* register character device /dev/mcelog */ @@ -2622,6 +2607,9 @@ err_register: unregister_syscore_ops(&mce_syscore_ops); cpuhp_remove_state(hp_online); +err_out_online: + cpuhp_remove_state(CPUHP_X86_MCE_DEAD); + err_out_mem: free_cpumask_var(mce_device_initialized); diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 3410d83cc2e2..79b96f647d64 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -16,6 +16,7 @@ enum cpuhp_state { CPUHP_PERF_SUPERH, CPUHP_X86_HPET_DEAD, CPUHP_X86_APB_DEAD, + CPUHP_X86_MCE_DEAD, CPUHP_VIRT_NET_DEAD, CPUHP_SLUB_DEAD, CPUHP_MM_WRITEBACK_DEAD, |