diff options
Diffstat (limited to 'arch/s390/lib/delay.c')
| -rw-r--r-- | arch/s390/lib/delay.c | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c index f289afeb3f31..c1ea14e3c927 100644 --- a/arch/s390/lib/delay.c +++ b/arch/s390/lib/delay.c @@ -4,30 +4,20 @@ * * Copyright IBM Corp. 1999, 2008 * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>, - * Heiko Carstens <heiko.carstens@de.ibm.com>, */ -#include <linux/sched.h> -#include <linux/delay.h> -#include <linux/timex.h> +#include <linux/processor.h> #include <linux/export.h> -#include <linux/irqflags.h> -#include <linux/interrupt.h> -#include <linux/jump_label.h> -#include <linux/irq.h> -#include <asm/vtimer.h> +#include <linux/delay.h> #include <asm/div64.h> -#include <asm/idle.h> +#include <asm/timex.h> void __delay(unsigned long loops) { - /* - * To end the bloody studid and useless discussion about the - * BogoMips number I took the liberty to define the __delay - * function in a way that that resulting BogoMips number will - * yield the megahertz number of the cpu. The important function - * is udelay and that is done using the tod clock. -- martin. - */ + /* + * Loop 'loops' times. Callers must not assume a specific + * amount of time passes before this function returns. + */ asm volatile("0: brct %0,0b" : : "d" ((loops/2) + 1)); } EXPORT_SYMBOL(__delay); |