1 files changed, 0 insertions, 181 deletions
diff --git a/fs/bcachefs/clock.c b/fs/bcachefs/clock.c
deleted file mode 100644
index 8e9264b5a84e..000000000000
--- a/fs/bcachefs/clock.c
+++ /dev/null
@@ -1,181 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include "bcachefs.h"
-#include "clock.h"
-
-#include <linux/freezer.h>
-#include <linux/kthread.h>
-#include <linux/preempt.h>
-
-static inline bool io_timer_cmp(const void *l, const void *r, void __always_unused *args)
-{
-	struct io_timer **_l = (struct io_timer **)l;
-	struct io_timer **_r = (struct io_timer **)r;
-
-	return (*_l)->expire < (*_r)->expire;
-}
-
-static const struct min_heap_callbacks callbacks = {
-	.less = io_timer_cmp,
-	.swp = NULL,
-};
-
-void bch2_io_timer_add(struct io_clock *clock, struct io_timer *timer)
-{
-	spin_lock(&clock->timer_lock);
-
-	if (time_after_eq64((u64) atomic64_read(&clock->now), timer->expire)) {
-		spin_unlock(&clock->timer_lock);
-		timer->fn(timer);
-		return;
-	}
-
-	for (size_t i = 0; i < clock->timers.nr; i++)
-		if (clock->timers.data[i] == timer)
-			goto out;
-
-	BUG_ON(!min_heap_push(&clock->timers, &timer, &callbacks, NULL));
-out:
-	spin_unlock(&clock->timer_lock);
-}
-
-void bch2_io_timer_del(struct io_clock *clock, struct io_timer *timer)
-{
-	spin_lock(&clock->timer_lock);
-
-	for (size_t i = 0; i < clock->timers.nr; i++)
-		if (clock->timers.data[i] == timer) {
-			min_heap_del(&clock->timers, i, &callbacks, NULL);
-			break;
-		}
-
-	spin_unlock(&clock->timer_lock);
-}
-
-struct io_clock_wait {
-	struct io_timer		io_timer;
-	struct task_struct	*task;
-	int			expired;
-};
-
-static void io_clock_wait_fn(struct io_timer *timer)
-{
-	struct io_clock_wait *wait = container_of(timer,
-				struct io_clock_wait, io_timer);
-
-	wait->expired = 1;
-	wake_up_process(wait->task);
-}
-
-void bch2_io_clock_schedule_timeout(struct io_clock *clock, u64 until)
-{
-	struct io_clock_wait wait = {
-		.io_timer.expire	= until,
-		.io_timer.fn		= io_clock_wait_fn,
-		.io_timer.fn2		= (void *) _RET_IP_,
-		.task			= current,
-	};
-
-	bch2_io_timer_add(clock, &wait.io_timer);
-	schedule();
-	bch2_io_timer_del(clock, &wait.io_timer);
-}
-
-unsigned long bch2_kthread_io_clock_wait_once(struct io_clock *clock,
-				     u64 io_until, unsigned long cpu_timeout)
-{
-	bool kthread = (current->flags & PF_KTHREAD) != 0;
-	struct io_clock_wait wait = {
-		.io_timer.expire	= io_until,
-		.io_timer.fn		= io_clock_wait_fn,
-		.io_timer.fn2		= (void *) _RET_IP_,
-		.task			= current,
-	};
-
-	bch2_io_timer_add(clock, &wait.io_timer);
-
-	set_current_state(TASK_INTERRUPTIBLE);
-	if (!(kthread && kthread_should_stop())) {
-		cpu_timeout = schedule_timeout(cpu_timeout);
-		try_to_freeze();
-	}
-
-	__set_current_state(TASK_RUNNING);
-	bch2_io_timer_del(clock, &wait.io_timer);
-	return cpu_timeout;
-}
-
-void bch2_kthread_io_clock_wait(struct io_clock *clock,
-				u64 io_until, unsigned long cpu_timeout)
-{
-	bool kthread = (current->flags & PF_KTHREAD) != 0;
-
-	while (!(kthread && kthread_should_stop()) &&
-	       cpu_timeout &&
-	       atomic64_read(&clock->now) < io_until)
-		cpu_timeout = bch2_kthread_io_clock_wait_once(clock, io_until, cpu_timeout);
-}
-
-static struct io_timer *get_expired_timer(struct io_clock *clock, u64 now)
-{
-	struct io_timer *ret = NULL;
-
-	if (clock->timers.nr &&
-	    time_after_eq64(now, clock->timers.data[0]->expire)) {
-		ret = *min_heap_peek(&clock->timers);
-		min_heap_pop(&clock->timers, &callbacks, NULL);
-	}
-
-	return ret;
-}
-
-void __bch2_increment_clock(struct io_clock *clock, u64 sectors)
-{
-	struct io_timer *timer;
-	u64 now = atomic64_add_return(sectors, &clock->now);
-
-	spin_lock(&clock->timer_lock);
-	while ((timer = get_expired_timer(clock, now)))
-		timer->fn(timer);
-	spin_unlock(&clock->timer_lock);
-}
-
-void bch2_io_timers_to_text(struct printbuf *out, struct io_clock *clock)
-{
-	out->atomic++;
-	spin_lock(&clock->timer_lock);
-	u64 now = atomic64_read(&clock->now);
-
-	printbuf_tabstop_push(out, 40);
-	prt_printf(out, "current time:\t%llu\n", now);
-
-	for (unsigned i = 0; i < clock->timers.nr; i++)
-		prt_printf(out, "%ps %ps:\t%llu\n",
-		       clock->timers.data[i]->fn,
-		       clock->timers.data[i]->fn2,
-		       clock->timers.data[i]->expire);
-	spin_unlock(&clock->timer_lock);
-	--out->atomic;
-}
-
-void bch2_io_clock_exit(struct io_clock *clock)
-{
-	free_heap(&clock->timers);
-	free_percpu(clock->pcpu_buf);
-}
-
-int bch2_io_clock_init(struct io_clock *clock)
-{
-	atomic64_set(&clock->now, 0);
-	spin_lock_init(&clock->timer_lock);
-
-	clock->max_slop = IO_CLOCK_PCPU_SECTORS * num_possible_cpus();
-
-	clock->pcpu_buf = alloc_percpu(*clock->pcpu_buf);
-	if (!clock->pcpu_buf)
-		return -BCH_ERR_ENOMEM_io_clock_init;
-
-	if (!init_heap(&clock->timers, NR_IO_TIMERS, GFP_KERNEL))
-		return -BCH_ERR_ENOMEM_io_clock_init;
-
-	return 0;
-}