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Date: Sat, 8 Mar 2008 07:35:06 +0800 From: Dave Young <hidave.darkstar@...il.com> To: akpm@...ux-foundation.org Cc: linux-kernel@...r.kernel.org Subject: [PATCH v2] add time_now_after and other macros which compare with jiffies Changes from previous version: 1. Add comments 2. Change names easy to understand. For example, now time_now_after(a) means time now after a will return true. --- Signed-off-by: Dave Young <hidave.darkstar@...il.com> --- include/linux/jiffies.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff -upr linux/include/linux/jiffies.h linux.new/include/linux/jiffies.h --- linux/include/linux/jiffies.h 2008-03-07 19:56:02.000000000 +0800 +++ linux.new/include/linux/jiffies.h 2008-03-07 20:10:25.000000000 +0800 @@ -135,6 +135,22 @@ static inline u64 get_jiffies_64(void) #define time_before_eq64(a,b) time_after_eq64(b,a) /* + * These four macros compare jiffies and 'a' for convenience. + */ + +/* time_now_after(a) return true if now (jiffies) is after a */ +#define time_now_after(a) time_after(jiffies, a) + +/* time_now_before(a) return true if now (jiffies) is before a */ +#define time_now_before(a) time_before(jiffies, a) + +/* time_now_after_eq(a) return true if now (jiffies) is after or equal to a */ +#define time_now_after_eq(a) time_after_eq(jiffies, a) + +/* time_now_before_eq(a) return true if now (jiffies) is before or equal to a */ +#define time_now_before_eq(a) time_before_eq(jiffies, a) + +/* * Have the 32 bit jiffies value wrap 5 minutes after boot * so jiffies wrap bugs show up earlier. */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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