| * @remark Copyright 2003 OProfile authors |
| * @remark Read the file COPYING |
| * @author Zwane Mwaikambo <zwane@linuxpower.ca> |
| #include <linux/oprofile.h> |
| #include <linux/rcupdate.h> |
| #include <linux/kdebug.h> |
| static int profile_timer_exceptions_notify(struct notifier_block *self, |
| unsigned long val, void *data) |
| struct die_args *args = (struct die_args *)data; |
| oprofile_add_sample(args->regs, 0); |
| static struct notifier_block profile_timer_exceptions_nb = { |
| .notifier_call = profile_timer_exceptions_notify, |
| static int timer_start(void) |
| if (register_die_notifier(&profile_timer_exceptions_nb)) |
| static void timer_stop(void) |
| unregister_die_notifier(&profile_timer_exceptions_nb); |
| synchronize_sched(); /* Allow already-started NMIs to complete. */ |
| int __init op_nmi_timer_init(struct oprofile_operations *ops) |
| if ((nmi_watchdog != NMI_IO_APIC) || (atomic_read(&nmi_active) <= 0)) |
| ops->start = timer_start; |
| printk(KERN_INFO "oprofile: using NMI timer interrupt.\n"); |