diff options
Diffstat (limited to 'drivers/oprofile/timer_int.c')
-rw-r--r-- | drivers/oprofile/timer_int.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/oprofile/timer_int.c b/drivers/oprofile/timer_int.c new file mode 100644 index 000000000000..710a45f0d734 --- /dev/null +++ b/drivers/oprofile/timer_int.c @@ -0,0 +1,46 @@ +/** + * @file timer_int.c + * + * @remark Copyright 2002 OProfile authors + * @remark Read the file COPYING + * + * @author John Levon <levon@movementarian.org> + */ + +#include <linux/kernel.h> +#include <linux/notifier.h> +#include <linux/smp.h> +#include <linux/oprofile.h> +#include <linux/profile.h> +#include <linux/init.h> +#include <asm/ptrace.h> + +#include "oprof.h" + +static int timer_notify(struct pt_regs *regs) +{ + oprofile_add_sample(regs, 0); + return 0; +} + +static int timer_start(void) +{ + return register_timer_hook(timer_notify); +} + + +static void timer_stop(void) +{ + unregister_timer_hook(timer_notify); +} + + +void __init oprofile_timer_init(struct oprofile_operations * ops) +{ + ops->create_files = NULL; + ops->setup = NULL; + ops->shutdown = NULL; + ops->start = timer_start; + ops->stop = timer_stop; + ops->cpu_type = "timer"; +} |