diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2016-09-06 17:04:53 (GMT) |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-09-19 19:44:32 (GMT) |
| commit | 84c9ceefecb8fe51c4bfa2a5424dd73bc024e41d (patch) | |
| tree | 81fb7b9d601af08259ffbf44058cb4e4e659b4db | |
| parent | e476d3129100ba18daea2224f38fdd7195118d4b (diff) | |
| download | linux-84c9ceefecb8fe51c4bfa2a5424dd73bc024e41d.tar.xz | |
s390/mm/pfault: Convert to hotplug state machine
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: linux-s390@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: rt@linutronix.de
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20160906170457.32393-18-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/s390/mm/fault.c | 30 | ||||
| -rw-r--r-- | include/linux/cpuhotplug.h | 1 |
2 files changed, 13 insertions, 18 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index a58bca6..cbb73fa 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -740,28 +740,21 @@ out: put_task_struct(tsk); } -static int pfault_cpu_notify(struct notifier_block *self, unsigned long action, - void *hcpu) +static int pfault_cpu_dead(unsigned int cpu) { struct thread_struct *thread, *next; struct task_struct *tsk; - switch (action & ~CPU_TASKS_FROZEN) { - case CPU_DEAD: - spin_lock_irq(&pfault_lock); - list_for_each_entry_safe(thread, next, &pfault_list, list) { - thread->pfault_wait = 0; - list_del(&thread->list); - tsk = container_of(thread, struct task_struct, thread); - wake_up_process(tsk); - put_task_struct(tsk); - } - spin_unlock_irq(&pfault_lock); - break; - default: - break; + spin_lock_irq(&pfault_lock); + list_for_each_entry_safe(thread, next, &pfault_list, list) { + thread->pfault_wait = 0; + list_del(&thread->list); + tsk = container_of(thread, struct task_struct, thread); + wake_up_process(tsk); + put_task_struct(tsk); } - return NOTIFY_OK; + spin_unlock_irq(&pfault_lock); + return 0; } static int __init pfault_irq_init(void) @@ -775,7 +768,8 @@ static int __init pfault_irq_init(void) if (rc) goto out_pfault; irq_subclass_register(IRQ_SUBCLASS_SERVICE_SIGNAL); - hotcpu_notifier(pfault_cpu_notify, 0); + cpuhp_setup_state_nocalls(CPUHP_S390_PFAULT_DEAD, "s390/pfault:dead", + NULL, pfault_cpu_dead); return 0; out_pfault: diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 8f8a48b..dea6696 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -26,6 +26,7 @@ enum cpuhp_state { CPUHP_BLOCK_SOFTIRQ_DEAD, CPUHP_VIRT_SCSI_DEAD, CPUHP_ACPI_CPUDRV_DEAD, + CPUHP_S390_PFAULT_DEAD, CPUHP_WORKQUEUE_PREP, CPUHP_POWER_NUMA_PREPARE, CPUHP_HRTIMERS_PREPARE, |