Commit 15428734 authored by Sven Schnelle's avatar Sven Schnelle Committed by Vasily Gorbik
Browse files

s390/idle: Remove duplicate get_lowcore() calls 



Assign the output from get_lowcore() to a local variable,
so the code is easier to read.

Acked-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarSven Schnelle <svens@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 46c30311

arch/s390/kernel/idle.c

+6 −5
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ static DEFINE_PER_CPU(struct s390_idle_data, s390_idle); 
void account_idle_time_irq(void)

{

	struct s390_idle_data *idle = this_cpu_ptr(&s390_idle);

	struct lowcore *lc = get_lowcore();

	unsigned long idle_time;

	u64 cycles_new[8];

	int i;
@@ -34,13 +35,13 @@ void account_idle_time_irq(void) 
			this_cpu_add(mt_cycles[i], cycles_new[i] - idle->mt_cycles_enter[i]);

	}



	idle_time = get_lowcore()->int_clock - idle->clock_idle_enter;

	idle_time = lc->int_clock - idle->clock_idle_enter;



	get_lowcore()->steal_timer += idle->clock_idle_enter - get_lowcore()->last_update_clock;

	get_lowcore()->last_update_clock = get_lowcore()->int_clock;

	lc->steal_timer += idle->clock_idle_enter - lc->last_update_clock;

	lc->last_update_clock = lc->int_clock;



	get_lowcore()->system_timer += get_lowcore()->last_update_timer - idle->timer_idle_enter;

	get_lowcore()->last_update_timer = get_lowcore()->sys_enter_timer;

	lc->system_timer += lc->last_update_timer - idle->timer_idle_enter;

	lc->last_update_timer = lc->sys_enter_timer;



	/* Account time spent with enabled wait psw loaded as idle time. */

	WRITE_ONCE(idle->idle_time, READ_ONCE(idle->idle_time) + idle_time);