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Commit 3f34d024 authored by Dave Young's avatar Dave Young Committed by Thomas Gleixner
Browse files

jiffies: add time_is_after_jiffies and others which compare with jiffies 



Most of time_after like macros usages just compare jiffies and another number,
so here add some time_is_* macros for convenience.

Signed-off-by: default avatarDave Young <hidave.darkstar@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 3925e6fc

include/linux/jiffies.h

+16 −0
Original line number Diff line number Diff line
@@ -134,6 +134,22 @@ static inline u64 get_jiffies_64(void) 
	 ((__s64)(a) - (__s64)(b) >= 0))

#define time_before_eq64(a,b)	time_after_eq64(b,a)



/*

 * These four macros compare jiffies and 'a' for convenience.

 */



/* time_is_before_jiffies(a) return true if a is before jiffies */

#define time_is_before_jiffies(a) time_after(jiffies, a)



/* time_is_after_jiffies(a) return true if a is after jiffies */

#define time_is_after_jiffies(a) time_before(jiffies, a)



/* time_is_before_eq_jiffies(a) return true if a is before or equal to jiffies*/

#define time_is_before_eq_jiffies(a) time_after_eq(jiffies, a)



/* time_is_after_eq_jiffies(a) return true if a is after or equal to jiffies*/

#define time_is_after_eq_jiffies(a) time_before_eq(jiffies, a)



/*

 * Have the 32 bit jiffies value wrap 5 minutes after boot

 * so jiffies wrap bugs show up earlier.