hrtimer: Remove task argument from hrtimer_init_sleeper()

All callers hand in 'current' and that's the only task pointer which
actually makes sense. Remove the task argument and set current in the
function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20190726185752.791885290@linutronix.de

block/blk-mq.c

@@ -3418,7 +3418,7 @@ static bool blk_mq_poll_hybrid_sleep(struct request_queue *q,
 	hrtimer_init_on_stack(&hs.timer, CLOCK_MONOTONIC, mode);
 	hrtimer_set_expires(&hs.timer, kt);
 
-	hrtimer_init_sleeper(&hs, current);
+	hrtimer_init_sleeper(&hs);
 	do {
 		if (blk_mq_rq_state(rq) == MQ_RQ_COMPLETE)
 			break;

drivers/staging/android/vsoc.c

@@ -442,7 +442,7 @@ static int handle_vsoc_cond_wait(struct file *filp, struct vsoc_cond_wait *arg)
 		hrtimer_set_expires_range_ns(&to->timer, wake_time,
 					     current->timer_slack_ns);
 
-		hrtimer_init_sleeper(to, current);
+		hrtimer_init_sleeper(to);
 	}
 
 	while (1) {

include/linux/hrtimer.h

@@ -463,8 +463,7 @@ extern long hrtimer_nanosleep(const struct timespec64 *rqtp,
 			      const enum hrtimer_mode mode,
 			      const clockid_t clockid);
 
-extern void hrtimer_init_sleeper(struct hrtimer_sleeper *sl,
-				 struct task_struct *tsk);
+extern void hrtimer_init_sleeper(struct hrtimer_sleeper *sl);
 
 extern int schedule_hrtimeout_range(ktime_t *expires, u64 delta,
 						const enum hrtimer_mode mode);

include/linux/wait.h

@@ -489,7 +489,7 @@ do {										\
 	struct hrtimer_sleeper __t;						\
 										\
 	hrtimer_init_on_stack(&__t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);	\
-	hrtimer_init_sleeper(&__t, current);					\
+	hrtimer_init_sleeper(&__t);						\
 	if ((timeout) != KTIME_MAX)						\
 		hrtimer_start_range_ns(&__t.timer, timeout,			\
 				       current->timer_slack_ns,			\

kernel/futex.c

@@ -490,7 +490,7 @@ futex_setup_timer(ktime_t *time, struct hrtimer_sleeper *timeout,
 	hrtimer_init_on_stack(&timeout->timer, (flags & FLAGS_CLOCKRT) ?
 			      CLOCK_REALTIME : CLOCK_MONOTONIC,
 			      HRTIMER_MODE_ABS);
-	hrtimer_init_sleeper(timeout, current);
+	hrtimer_init_sleeper(timeout);
 
 	/*
 	 * If range_ns is 0, calling hrtimer_set_expires_range_ns() is

kernel/time/hrtimer.c

@@ -1639,10 +1639,10 @@ static enum hrtimer_restart hrtimer_wakeup(struct hrtimer *timer)
 	return HRTIMER_NORESTART;
 }
 
-void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, struct task_struct *task)
+void hrtimer_init_sleeper(struct hrtimer_sleeper *sl)
 {
 	sl->timer.function = hrtimer_wakeup;
-	sl->task = task;
+	sl->task = current;
 }
 EXPORT_SYMBOL_GPL(hrtimer_init_sleeper);
 
@@ -1669,7 +1669,7 @@ static int __sched do_nanosleep(struct hrtimer_sleeper *t, enum hrtimer_mode mod
 {
 	struct restart_block *restart;
 
-	hrtimer_init_sleeper(t, current);
+	hrtimer_init_sleeper(t);
 
 	do {
 		set_current_state(TASK_INTERRUPTIBLE);
@@ -1930,7 +1930,7 @@ schedule_hrtimeout_range_clock(ktime_t *expires, u64 delta,
 	hrtimer_init_on_stack(&t.timer, clock_id, mode);
 	hrtimer_set_expires_range_ns(&t.timer, *expires, delta);
 
-	hrtimer_init_sleeper(&t, current);
+	hrtimer_init_sleeper(&t);
 
 	hrtimer_start_expires(&t.timer, mode);
 

net/core/pktgen.c

@@ -2171,7 +2171,7 @@ static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
 		} while (ktime_compare(end_time, spin_until) < 0);
 	} else {
 		/* see do_nanosleep */
-		hrtimer_init_sleeper(&t, current);
+		hrtimer_init_sleeper(&t);
 		do {
 			set_current_state(TASK_INTERRUPTIBLE);
 			hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);