timekeeping: Remove timekeeper.total_sleep_time

 * the tv_nsec part positive so we can use the usual normalization.

 *

 * wall_to_monotonic is moved after resume from suspend for the

 * monotonic time not to jump. We need to add total_sleep_time to

 * wall_to_monotonic to get the real boot based time offset.

 * monotonic time not to jump. To calculate the real boot time offset

 * we need to do offs_real - offs_boot.

 *

 * - wall_to_monotonic is no longer the boot time, getboottime must be

 * used instead.

	/* Offset clock monotonic -> clock tai */

	ktime_t			offs_tai;

	/* time spent in suspend */

	struct timespec64	total_sleep_time;

	/* The current UTC to TAI offset in seconds */

	s32			tai_offset;

	tk->offs_tai = ktime_add(tk->offs_real, ktime_set(tk->tai_offset, 0));

}

static void tk_set_sleep_time(struct timekeeper *tk, struct timespec64 t)

static inline void tk_update_sleep_time(struct timekeeper *tk, ktime_t delta)

{

	/* Verify consistency before modifying */

	WARN_ON_ONCE(tk->offs_boot.tv64 != timespec64_to_ktime(tk->total_sleep_time).tv64);

	tk->total_sleep_time	= t;

	tk->offs_boot		= timespec64_to_ktime(t);

	tk->offs_boot = ktime_add(tk->offs_boot, delta);

}

/**

	set_normalized_timespec64(&tmp, -boot.tv_sec, -boot.tv_nsec);

	tk_set_wall_to_mono(tk, tmp);

	tmp.tv_sec = 0;

	tmp.tv_nsec = 0;

	tk_set_sleep_time(tk, tmp);

	timekeeping_update(tk, TK_MIRROR);

	write_seqcount_end(&tk_core.seq);

	}

	tk_xtime_add(tk, delta);

	tk_set_wall_to_mono(tk, timespec64_sub(tk->wall_to_monotonic, *delta));

	tk_set_sleep_time(tk, timespec64_add(tk->total_sleep_time, *delta));

	tk_update_sleep_time(tk, timespec64_to_ktime(*delta));

	tk_debug_account_sleep_time(delta);

}