Commit 545b288d authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

[S390] time: let local_tick_enable/disable() reprogram the clock comparator 



Let local_tick_enable/disable() reprogram the clock comparator so the
function names make semantically more sense.
Also that way the functions are more symmetric since normally each
local_tick_enable() call usually would have a subsequent call to
set_clock_comparator() anyway.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 17eb7a5c

arch/s390/include/asm/timex.h

+2 −0
Original line number Diff line number Diff line
@@ -59,12 +59,14 @@ static inline unsigned long long local_tick_disable(void) 


	old = S390_lowcore.clock_comparator;

	S390_lowcore.clock_comparator = -1ULL;

	set_clock_comparator(S390_lowcore.clock_comparator);

	return old;

}



static inline void local_tick_enable(unsigned long long comp)

{

	S390_lowcore.clock_comparator = comp;

	set_clock_comparator(S390_lowcore.clock_comparator);

}



#define CLOCK_TICK_RATE	1193180 /* Underlying HZ */

arch/s390/lib/delay.c

+0 −2
Original line number Diff line number Diff line
@@ -47,7 +47,6 @@ static void __udelay_disabled(unsigned long long usecs) 
	lockdep_on();

	__ctl_load(cr0_saved, 0, 0);

	local_tick_enable(clock_saved);

	set_clock_comparator(S390_lowcore.clock_comparator);

}



static void __udelay_enabled(unsigned long long usecs)
@@ -70,7 +69,6 @@ static void __udelay_enabled(unsigned long long usecs) 
		if (clock_saved)

			local_tick_enable(clock_saved);

	} while (get_clock() < end);

	set_clock_comparator(S390_lowcore.clock_comparator);

}



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