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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
authored by
Sven Schnelle
and committed by
Vasily Gorbik
15428734
46c30311
+6
-5
+6
-5
arch/s390/kernel/idle.c
+6
-5
arch/s390/kernel/idle.c
···
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void account_idle_time_irq(void)
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{
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struct s390_idle_data *idle = this_cpu_ptr(&s390_idle);
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+
struct lowcore *lc = get_lowcore();
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unsigned long idle_time;
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u64 cycles_new[8];
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int i;
···
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this_cpu_add(mt_cycles[i], cycles_new[i] - idle->mt_cycles_enter[i]);
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}
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-
idle_time = get_lowcore()->int_clock - idle->clock_idle_enter;
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idle_time = lc->int_clock - idle->clock_idle_enter;
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get_lowcore()->steal_timer += idle->clock_idle_enter - get_lowcore()->last_update_clock;
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get_lowcore()->last_update_clock = get_lowcore()->int_clock;
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lc->steal_timer += idle->clock_idle_enter - lc->last_update_clock;
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lc->last_update_clock = lc->int_clock;
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-
get_lowcore()->system_timer += get_lowcore()->last_update_timer - idle->timer_idle_enter;
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-
get_lowcore()->last_update_timer = get_lowcore()->sys_enter_timer;
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lc->system_timer += lc->last_update_timer - idle->timer_idle_enter;
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lc->last_update_timer = lc->sys_enter_timer;
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/* Account time spent with enabled wait psw loaded as idle time. */
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WRITE_ONCE(idle->idle_time, READ_ONCE(idle->idle_time) + idle_time);