/**
* tick_program_event - program the CPU local timer device for the next event
+ * @expires: the time at which the next timer event should occur
+ * @force: flag to force reprograming even if the event time hasn't changed
+ *
+ * Return: 0 on success, negative error code on failure
*/
int tick_program_event(ktime_t expires, int force)
{
/**
* tick_setup_oneshot - setup the event device for oneshot mode (hres or nohz)
+ * @newdev: Pointer to the clock event device to configure
+ * @handler: Function to be called when the event device triggers an interrupt
+ * @next_event: Initial expiry time for the next event (in ktime)
+ *
+ * Configures the specified clock event device for onshot mode,
+ * assigns the given handler as its event callback, and programs
+ * the device to trigger at the specified next event time.
*/
void tick_setup_oneshot(struct clock_event_device *newdev,
void (*handler)(struct clock_event_device *),
/**
* tick_switch_to_oneshot - switch to oneshot mode
+ * @handler: function to call when an event occurs on the tick device
+ *
+ * Return: 0 on success, -EINVAL if the tick device is not present,
+ * not functional, or does not support oneshot mode.
*/
int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *))
{
/**
* tick_oneshot_mode_active - check whether the system is in oneshot mode
*
- * returns 1 when either nohz or highres are enabled. otherwise 0.
+ * Return: 1 when either nohz or highres are enabled, otherwise 0.
*/
int tick_oneshot_mode_active(void)
{
* tick_init_highres - switch to high resolution mode
*
* Called with interrupts disabled.
+ *
+ * Return: 0 on success, -EINVAL if the tick device cannot switch
+ * to oneshot/high-resolution mode.
*/
int tick_init_highres(void)
{