diff options
| -rw-r--r-- | arch/x86/oprofile/nmi_int.c | 147 |
1 files changed, 71 insertions, 76 deletions
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c index 57f6c908808..370d832f398 100644 --- a/arch/x86/oprofile/nmi_int.c +++ b/arch/x86/oprofile/nmi_int.c @@ -28,85 +28,9 @@ static struct op_x86_model_spec const *model; static DEFINE_PER_CPU(struct op_msrs, cpu_msrs); static DEFINE_PER_CPU(unsigned long, saved_lvtpc); -static int nmi_start(void); -static void nmi_stop(void); -static void nmi_cpu_start(void *dummy); -static void nmi_cpu_stop(void *dummy); - /* 0 == registered but off, 1 == registered and on */ static int nmi_enabled = 0; -#ifdef CONFIG_SMP -static int oprofile_cpu_notifier(struct notifier_block *b, unsigned long action, - void *data) -{ - int cpu = (unsigned long)data; - switch (action) { - case CPU_DOWN_FAILED: - case CPU_ONLINE: - smp_call_function_single(cpu, nmi_cpu_start, NULL, 0); - break; - case CPU_DOWN_PREPARE: - smp_call_function_single(cpu, nmi_cpu_stop, NULL, 1); - break; - } - return NOTIFY_DONE; -} - -static struct notifier_block oprofile_cpu_nb = { - .notifier_call = oprofile_cpu_notifier -}; -#endif - -#ifdef CONFIG_PM - -static int nmi_suspend(struct sys_device *dev, pm_message_t state) -{ - /* Only one CPU left, just stop that one */ - if (nmi_enabled == 1) - nmi_cpu_stop(NULL); - return 0; -} - -static int nmi_resume(struct sys_device *dev) -{ - if (nmi_enabled == 1) - nmi_cpu_start(NULL); - return 0; -} - -static struct sysdev_class oprofile_sysclass = { - .name = "oprofile", - .resume = nmi_resume, - .suspend = nmi_suspend, -}; - -static struct sys_device device_oprofile = { - .id = 0, - .cls = &oprofile_sysclass, -}; - -static int __init init_sysfs(void) -{ - int error; - - error = sysdev_class_register(&oprofile_sysclass); - if (!error) - error = sysdev_register(&device_oprofile); - return error; -} - -static void exit_sysfs(void) -{ - sysdev_unregister(&device_oprofile); - sysdev_class_unregister(&oprofile_sysclass); -} - -#else -#define init_sysfs() do { } while (0) -#define exit_sysfs() do { } while (0) -#endif /* CONFIG_PM */ - static int profile_exceptions_notify(struct notifier_block *self, unsigned long val, void *data) { @@ -361,6 +285,77 @@ static int nmi_create_files(struct super_block *sb, struct dentry *root) return 0; } +#ifdef CONFIG_SMP +static int oprofile_cpu_notifier(struct notifier_block *b, unsigned long action, + void *data) +{ + int cpu = (unsigned long)data; + switch (action) { + case CPU_DOWN_FAILED: + case CPU_ONLINE: + smp_call_function_single(cpu, nmi_cpu_start, NULL, 0); + break; + case CPU_DOWN_PREPARE: + smp_call_function_single(cpu, nmi_cpu_stop, NULL, 1); + break; + } + return NOTIFY_DONE; +} + +static struct notifier_block oprofile_cpu_nb = { + .notifier_call = oprofile_cpu_notifier +}; +#endif + +#ifdef CONFIG_PM + +static int nmi_suspend(struct sys_device *dev, pm_message_t state) +{ + /* Only one CPU left, just stop that one */ + if (nmi_enabled == 1) + nmi_cpu_stop(NULL); + return 0; +} + +static int nmi_resume(struct sys_device *dev) +{ + if (nmi_enabled == 1) + nmi_cpu_start(NULL); + return 0; +} + +static struct sysdev_class oprofile_sysclass = { + .name = "oprofile", + .resume = nmi_resume, + .suspend = nmi_suspend, +}; + +static struct sys_device device_oprofile = { + .id = 0, + .cls = &oprofile_sysclass, +}; + +static int __init init_sysfs(void) +{ + int error; + + error = sysdev_class_register(&oprofile_sysclass); + if (!error) + error = sysdev_register(&device_oprofile); + return error; +} + +static void exit_sysfs(void) +{ + sysdev_unregister(&device_oprofile); + sysdev_class_unregister(&oprofile_sysclass); +} + +#else +#define init_sysfs() do { } while (0) +#define exit_sysfs() do { } while (0) +#endif /* CONFIG_PM */ + static int p4force; module_param(p4force, int, 0); |