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Diffstat (limited to 'drivers/oprofile/timer_int.c')
-rw-r--r--drivers/oprofile/timer_int.c122
1 files changed, 0 insertions, 122 deletions
diff --git a/drivers/oprofile/timer_int.c b/drivers/oprofile/timer_int.c
deleted file mode 100644
index 2498a6cd7c24..000000000000
--- a/drivers/oprofile/timer_int.c
+++ /dev/null
@@ -1,122 +0,0 @@
-/**
- * @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 <linux/cpu.h>
-#include <linux/hrtimer.h>
-#include <asm/irq_regs.h>
-#include <asm/ptrace.h>
-
-#include "oprof.h"
-
-static DEFINE_PER_CPU(struct hrtimer, oprofile_hrtimer);
-static int ctr_running;
-
-static enum hrtimer_restart oprofile_hrtimer_notify(struct hrtimer *hrtimer)
-{
- oprofile_add_sample(get_irq_regs(), 0);
- hrtimer_forward_now(hrtimer, ns_to_ktime(TICK_NSEC));
- return HRTIMER_RESTART;
-}
-
-static void __oprofile_hrtimer_start(void *unused)
-{
- struct hrtimer *hrtimer = this_cpu_ptr(&oprofile_hrtimer);
-
- if (!ctr_running)
- return;
-
- hrtimer_init(hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
- hrtimer->function = oprofile_hrtimer_notify;
-
- hrtimer_start(hrtimer, ns_to_ktime(TICK_NSEC),
- HRTIMER_MODE_REL_PINNED);
-}
-
-static int oprofile_hrtimer_start(void)
-{
- get_online_cpus();
- ctr_running = 1;
- on_each_cpu(__oprofile_hrtimer_start, NULL, 1);
- put_online_cpus();
- return 0;
-}
-
-static void __oprofile_hrtimer_stop(int cpu)
-{
- struct hrtimer *hrtimer = &per_cpu(oprofile_hrtimer, cpu);
-
- if (!ctr_running)
- return;
-
- hrtimer_cancel(hrtimer);
-}
-
-static void oprofile_hrtimer_stop(void)
-{
- int cpu;
-
- get_online_cpus();
- for_each_online_cpu(cpu)
- __oprofile_hrtimer_stop(cpu);
- ctr_running = 0;
- put_online_cpus();
-}
-
-static int oprofile_timer_online(unsigned int cpu)
-{
- local_irq_disable();
- __oprofile_hrtimer_start(NULL);
- local_irq_enable();
- return 0;
-}
-
-static int oprofile_timer_prep_down(unsigned int cpu)
-{
- __oprofile_hrtimer_stop(cpu);
- return 0;
-}
-
-static enum cpuhp_state hp_online;
-
-static int oprofile_hrtimer_setup(void)
-{
- int ret;
-
- ret = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN,
- "oprofile/timer:online",
- oprofile_timer_online,
- oprofile_timer_prep_down);
- if (ret < 0)
- return ret;
- hp_online = ret;
- return 0;
-}
-
-static void oprofile_hrtimer_shutdown(void)
-{
- cpuhp_remove_state_nocalls(hp_online);
-}
-
-int oprofile_timer_init(struct oprofile_operations *ops)
-{
- ops->create_files = NULL;
- ops->setup = oprofile_hrtimer_setup;
- ops->shutdown = oprofile_hrtimer_shutdown;
- ops->start = oprofile_hrtimer_start;
- ops->stop = oprofile_hrtimer_stop;
- ops->cpu_type = "timer";
- printk(KERN_INFO "oprofile: using timer interrupt.\n");
- return 0;
-}