diff options
Diffstat (limited to 'arch/ia64/kernel/smp.c')
| -rw-r--r-- | arch/ia64/kernel/smp.c | 68 |
1 files changed, 35 insertions, 33 deletions
diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c index 9a9d4c48933..983296f1c81 100644 --- a/arch/ia64/kernel/smp.c +++ b/arch/ia64/kernel/smp.c @@ -98,8 +98,33 @@ unlock_ipi_calllock(void) spin_unlock_irq(&call_lock); } +static inline void +handle_call_data(void) +{ + struct call_data_struct *data; + void (*func)(void *info); + void *info; + int wait; + + /* release the 'pointer lock' */ + data = (struct call_data_struct *)call_data; + func = data->func; + info = data->info; + wait = data->wait; + + mb(); + atomic_inc(&data->started); + /* At this point the structure may be gone unless wait is true. */ + (*func)(info); + + /* Notify the sending CPU that the task is done. */ + mb(); + if (wait) + atomic_inc(&data->finished); +} + static void -stop_this_cpu (void) +stop_this_cpu(void) { /* * Remove this CPU: @@ -138,44 +163,21 @@ handle_IPI (int irq, void *dev_id) ops &= ~(1 << which); switch (which) { - case IPI_CALL_FUNC: - { - struct call_data_struct *data; - void (*func)(void *info); - void *info; - int wait; - - /* release the 'pointer lock' */ - data = (struct call_data_struct *) call_data; - func = data->func; - info = data->info; - wait = data->wait; - - mb(); - atomic_inc(&data->started); - /* - * At this point the structure may be gone unless - * wait is true. - */ - (*func)(info); - - /* Notify the sending CPU that the task is done. */ - mb(); - if (wait) - atomic_inc(&data->finished); - } - break; - - case IPI_CPU_STOP: + case IPI_CALL_FUNC: + handle_call_data(); + break; + + case IPI_CPU_STOP: stop_this_cpu(); break; #ifdef CONFIG_KEXEC - case IPI_KDUMP_CPU_STOP: + case IPI_KDUMP_CPU_STOP: unw_init_running(kdump_cpu_freeze, NULL); break; #endif - default: - printk(KERN_CRIT "Unknown IPI on CPU %d: %lu\n", this_cpu, which); + default: + printk(KERN_CRIT "Unknown IPI on CPU %d: %lu\n", + this_cpu, which); break; } } while (ops); |