diff options
Diffstat (limited to 'arch/x86/oprofile/nmi_timer_int.c')
-rw-r--r-- | arch/x86/oprofile/nmi_timer_int.c | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/arch/x86/oprofile/nmi_timer_int.c b/arch/x86/oprofile/nmi_timer_int.c deleted file mode 100644 index 720bf5a53c5..00000000000 --- a/arch/x86/oprofile/nmi_timer_int.c +++ /dev/null @@ -1,66 +0,0 @@ -/** - * @file nmi_timer_int.c - * - * @remark Copyright 2003 OProfile authors - * @remark Read the file COPYING - * - * @author Zwane Mwaikambo <zwane@linuxpower.ca> - */ - -#include <linux/init.h> -#include <linux/smp.h> -#include <linux/errno.h> -#include <linux/oprofile.h> -#include <linux/rcupdate.h> -#include <linux/kdebug.h> - -#include <asm/nmi.h> -#include <asm/apic.h> -#include <asm/ptrace.h> - -static int profile_timer_exceptions_notify(struct notifier_block *self, - unsigned long val, void *data) -{ - struct die_args *args = (struct die_args *)data; - int ret = NOTIFY_DONE; - - switch (val) { - case DIE_NMI: - oprofile_add_sample(args->regs, 0); - ret = NOTIFY_STOP; - break; - default: - break; - } - return ret; -} - -static struct notifier_block profile_timer_exceptions_nb = { - .notifier_call = profile_timer_exceptions_notify, - .next = NULL, - .priority = NMI_LOW_PRIOR, -}; - -static int timer_start(void) -{ - if (register_die_notifier(&profile_timer_exceptions_nb)) - return 1; - return 0; -} - - -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) -{ - ops->start = timer_start; - ops->stop = timer_stop; - ops->cpu_type = "timer"; - printk(KERN_INFO "oprofile: using NMI timer interrupt.\n"); - return 0; -} |