kernel/time/timer.c

222  *			is running the timer callback function.
224  *			waiting for the end of the timer callback function
390  * __round_jiffies - function to round jiffies to a full second
416  * __round_jiffies_relative - function to round jiffies to a full second
445  * round_jiffies - function to round jiffies to a full second
466  * round_jiffies_relative - function to round jiffies to a full second
487  * __round_jiffies_up - function to round jiffies up to a full second
503  * __round_jiffies_up_relative - function to round jiffies up to a full second
522  * round_jiffies_up - function to round jiffies up to a full second
537  * round_jiffies_up_relative - function to round jiffies up to a full second
564  * Helper function to calculate the array index for a given expiry
696 	void	(*function)(struct timer_list *t);
702 		.function = fn,					\
720 		if (timer_hints[i].function == timer->function) {
727 	return timer->function;
900 	timer->function = func;
910  * @func: timer callback function
1104 		if (!timer->function)
1138 		if (!timer->function)
1199  * If @timer->function == NULL then the start operation is silently
1230  * If @timer->function == NULL then the start operation is silently
1255  * If @timer->function == NULL then the start operation is silently
1278  * timer->function(timer) will be invoked from soft interrupt context.
1280  * The @timer->expires and @timer->function fields must be set prior
1281  * to calling this function.
1283  * If @timer->function == NULL then the start operation is silently
1371 	if (!timer->function)
1393  * __timer_delete - Internal function: Deactivate a timer
1398  * If @shutdown is true then @timer->function is set to NULL under the
1400  * case any attempt to rearm @timer after this function returns will be
1421 	 * timer->function == NULL in the expiry code.
1423 	 * If timer->function is currently executed, then this makes sure
1430 			timer->function = NULL;
1441  * The function only deactivates a pending timer, but contrary to
1443  * callback function is concurrently executed on a different CPU or not.
1445  * concurrently then the return value of this function is meaningless.
1461  * The function does not wait for an eventually running timer callback on a
1463  * @timer after this function returns will be silently ignored.
1465  * This function is useful for teardown code and should only be used when
1479  * __try_to_del_timer_sync - Internal function: Try to deactivate a timer
1484  * If @shutdown is true then @timer->function is set to NULL under the
1486  * attempt to rearm @timer after this function returns will be silently
1489  * This function cannot guarantee that the timer cannot be rearmed
1496  * * %-1 - The timer callback function is running on a different CPU
1511 		timer->function = NULL;
1522  * This function tries to deactivate a timer. On success the timer is not
1523  * queued and the timer callback function is not running on any CPU.
1525  * This function does not guarantee that the timer cannot be rearmed right
1532  * * %-1 - The timer callback function is running on a different CPU
1574  * This function is called on PREEMPT_RT kernels when the fast path
1575  * deletion of a timer failed because the timer callback function was
1581  * function.
1614  * __timer_delete_sync - Internal function: Deactivate a timer and wait
1617  * @shutdown:	If true, @timer->function will be set to NULL under the
1624  * If @shutdown is set then @timer->function is set to NULL under timer
1681  * otherwise this function is meaningless. It must not be called from
1684  * function. The timer's handler must not call add_timer_on(). Upon exit
1706  * This function cannot guarantee that the timer is not rearmed again by
1709  * value of the function is meaningless.
1728  * When the function returns it is guaranteed that:
1730  *   - The callback function of @timer is not running
1736  * This function is useful for final teardown of an infrastructure where
1775 	 * function that is called from it, this we need to take into
1828 		fn = timer->function;
2260 	 * The proper timer migration hierarchy function depends on the callsite
2441  * This function runs timers and the timer-tq in bottom half context.
2516  * The function behavior depends on the current task state