drivers: Remove CONFIG_OPROFILE support

The "oprofile" user-space tools don't use the kernel OPROFILE support
any more, and haven't in a long time. User-space has been converted to
the perf interfaces.

Remove kernel's old oprofile support.

Suggested-by: Christoph Hellwig <hch@infradead.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Robert Richter <rric@kernel.org>
Acked-by: Paul E. McKenney <paulmck@kernel.org> #RCU
Acked-by: William Cohen <wcohen@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Thomas Gleixner <tglx@linutronix.de>

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;
-}