add ktime_compare as an analogy to timeval_compare/timespec_compare
Signed-off-by: Marcin Slusarz <marcin.slusarz@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
---
include/linux/ktime.h | 28 ++++++++++++++++++++++++++++
1 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index ce59832..4590f95 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -130,6 +130,20 @@ static inline ktime_t timeval_to_ktime(struct timeval tv)
/* Convert ktime_t to nanoseconds - NOP in the scalar storage format: */
#define ktime_to_ns(kt) ((kt).tv64)
+/*
+ * lhs < rhs: return <0
+ * lhs == rhs: return 0
+ * lhs > rhs: return >0
+ */
+static inline int ktime_compare(ktime_t lhs, ktime_t rhs)
+{
+ if (lhs.tv64 < rhs.tv64)
+ return -1;
+ if (lhs.tv64 > rhs.tv64)
+ return 1;
+ return 0;
+}
+
#else
/*
@@ -275,6 +289,20 @@ static inline s64 ktime_to_ns(const ktime_t kt)
return (s64) kt.tv.sec * NSEC_PER_SEC + kt.tv.nsec;
}
+/*
+ * lhs < rhs: return <0
+ * lhs == rhs: return 0
+ * lhs > rhs: return >0
+ */
+static inline int ktime_compare(ktime_t lhs, ktime_t rhs)
+{
+ if (lhs.sec < rhs.sec)
+ return -1;
+ if (lhs.sec > rhs.sec)
+ return 1;
+ return lhs.nsec - rhs.nsec;
+}
+
#endif
/**
--
1.6.0.6
--
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