timers: Expand clk forward logic beyond nohz

static inline void forward_timer_base(struct timer_base *base)

{

#ifdef CONFIG_NO_HZ_COMMON

	unsigned long jnow;

	/*

	 * We only forward the base when we are idle or have just come out of

	 * idle (must_forward_clk logic), and have a delta between base clock

	 * and jiffies. In the common case, run_timers will take care of it.

	 */

	if (likely(!base->must_forward_clk))

	if (!base->must_forward_clk)

		return;

	jnow = READ_ONCE(jiffies);

	base->must_forward_clk = base->is_idle;

	if ((long)(jnow - base->clk) < 2)

		return;

			return;

		base->clk = base->next_expiry;

	}

#endif

}

		 * logic is only maintained for the BASE_STD base, deferrable

		 * timers may still see large granularity skew (by design).

		 */

		if ((expires - basem) > TICK_NSEC) {

			base->must_forward_clk = true;

		if ((expires - basem) > TICK_NSEC)

			base->is_idle = true;

	}

	}

	raw_spin_unlock(&base->lock);

	return cmp_next_hrtimer_event(basem, expires);

	/*

	 * timer_base::must_forward_clk must be cleared before running

	 * timers so that any timer functions that call mod_timer() will

	 * not try to forward the base. Idle tracking / clock forwarding

	 * logic is only used with BASE_STD timers.

	 *

	 * The must_forward_clk flag is cleared unconditionally also for

	 * the deferrable base. The deferrable base is not affected by idle

	 * tracking and never forwarded, so clearing the flag is a NOOP.

	 *

	 * The fact that the deferrable base is never forwarded can cause

	 * large variations in granularity for deferrable timers, but they

	 * can be deferred for long periods due to idle anyway.

	 * not try to forward the base.

	 */

	base->must_forward_clk = false;

		while (levels--)

			expire_timers(base, heads + levels);

	}

	base->must_forward_clk = true;

	raw_spin_unlock_irq(&base->lock);

	timer_base_unlock_expiry(base);

}