Commit d7dcf26f authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

softirq: Remove tasklet_hrtimer 



There are no more users of this interface.
Remove it.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarAnna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Link: https://lkml.kernel.org/r/20190301224821.29843-4-bigeasy@linutronix.de
parent 671422b2

include/linux/interrupt.h

+0 −25
Original line number Diff line number Diff line
@@ -668,31 +668,6 @@ extern void tasklet_kill_immediate(struct tasklet_struct *t, unsigned int cpu); 
extern void tasklet_init(struct tasklet_struct *t,

			 void (*func)(unsigned long), unsigned long data);



struct tasklet_hrtimer {

	struct hrtimer		timer;

	struct tasklet_struct	tasklet;

	enum hrtimer_restart	(*function)(struct hrtimer *);

};



extern void

tasklet_hrtimer_init(struct tasklet_hrtimer *ttimer,

		     enum hrtimer_restart (*function)(struct hrtimer *),

		     clockid_t which_clock, enum hrtimer_mode mode);



static inline

void tasklet_hrtimer_start(struct tasklet_hrtimer *ttimer, ktime_t time,

			   const enum hrtimer_mode mode)

{

	hrtimer_start(&ttimer->timer, time, mode);

}



static inline

void tasklet_hrtimer_cancel(struct tasklet_hrtimer *ttimer)

{

	hrtimer_cancel(&ttimer->timer);

	tasklet_kill(&ttimer->tasklet);

}



/*

 * Autoprobing for irqs:

 *

kernel/softirq.c

+0 −51
Original line number Diff line number Diff line
@@ -573,57 +573,6 @@ void tasklet_kill(struct tasklet_struct *t) 
}

EXPORT_SYMBOL(tasklet_kill);



/*

 * tasklet_hrtimer

 */



/*

 * The trampoline is called when the hrtimer expires. It schedules a tasklet

 * to run __tasklet_hrtimer_trampoline() which in turn will call the intended

 * hrtimer callback, but from softirq context.

 */

static enum hrtimer_restart __hrtimer_tasklet_trampoline(struct hrtimer *timer)

{

	struct tasklet_hrtimer *ttimer =

		container_of(timer, struct tasklet_hrtimer, timer);



	tasklet_hi_schedule(&ttimer->tasklet);

	return HRTIMER_NORESTART;

}



/*

 * Helper function which calls the hrtimer callback from

 * tasklet/softirq context

 */

static void __tasklet_hrtimer_trampoline(unsigned long data)

{

	struct tasklet_hrtimer *ttimer = (void *)data;

	enum hrtimer_restart restart;



	restart = ttimer->function(&ttimer->timer);

	if (restart != HRTIMER_NORESTART)

		hrtimer_restart(&ttimer->timer);

}



/**

 * tasklet_hrtimer_init - Init a tasklet/hrtimer combo for softirq callbacks

 * @ttimer:	 tasklet_hrtimer which is initialized

 * @function:	 hrtimer callback function which gets called from softirq context

 * @which_clock: clock id (CLOCK_MONOTONIC/CLOCK_REALTIME)

 * @mode:	 hrtimer mode (HRTIMER_MODE_ABS/HRTIMER_MODE_REL)

 */

void tasklet_hrtimer_init(struct tasklet_hrtimer *ttimer,

			  enum hrtimer_restart (*function)(struct hrtimer *),

			  clockid_t which_clock, enum hrtimer_mode mode)

{

	hrtimer_init(&ttimer->timer, which_clock, mode);

	ttimer->timer.function = __hrtimer_tasklet_trampoline;

	tasklet_init(&ttimer->tasklet, __tasklet_hrtimer_trampoline,

		     (unsigned long)ttimer);

	ttimer->function = function;

}

EXPORT_SYMBOL_GPL(tasklet_hrtimer_init);



void __init softirq_init(void)

{

	int cpu;