X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fktime.h;fp=include%2Flinux%2Fktime.h;h=84eeecd60a02644a6cc64563747a594b8bafbb54;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=62bc57580707c6b3deb36c080fbc7e353f22963d;hpb=4e76c8a9fa413ccc09d3f7f664183dcce3555d57;p=linux-2.6.git

diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index 62bc57580..84eeecd60 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -56,7 +56,8 @@ typedef union {
 #endif
 } ktime_t;
 
-#define KTIME_MAX			(~((u64)1 << 63))
+#define KTIME_MAX			((s64)~((u64)1 << 63))
+#define KTIME_SEC_MAX			(KTIME_MAX / NSEC_PER_SEC)
 
 /*
  * ktime_t definitions when using the 64-bit scalar representation:
@@ -66,7 +67,6 @@ typedef union {
 
 /**
  * ktime_set - Set a ktime_t variable from a seconds/nanoseconds value
- *
  * @secs:	seconds to set
  * @nsecs:	nanoseconds to set
  *
@@ -74,6 +74,10 @@ typedef union {
  */
 static inline ktime_t ktime_set(const long secs, const unsigned long nsecs)
 {
+#if (BITS_PER_LONG == 64)
+	if (unlikely(secs >= KTIME_SEC_MAX))
+		return (ktime_t){ .tv64 = KTIME_MAX };
+#endif
 	return (ktime_t) { .tv64 = (s64)secs * NSEC_PER_SEC + (s64)nsecs };
 }
 
@@ -138,7 +142,6 @@ static inline ktime_t ktime_set(const long secs, const unsigned long nsecs)
 
 /**
  * ktime_sub - subtract two ktime_t variables
- *
  * @lhs:	minuend
  * @rhs:	subtrahend
  *
@@ -157,7 +160,6 @@ static inline ktime_t ktime_sub(const ktime_t lhs, const ktime_t rhs)
 
 /**
  * ktime_add - add two ktime_t variables
- *
  * @add1:	addend1
  * @add2:	addend2
  *
@@ -184,7 +186,6 @@ static inline ktime_t ktime_add(const ktime_t add1, const ktime_t add2)
 
 /**
  * ktime_add_ns - Add a scalar nanoseconds value to a ktime_t variable
- *
  * @kt:		addend
  * @nsec:	the scalar nsec value to add
  *
@@ -194,7 +195,6 @@ extern ktime_t ktime_add_ns(const ktime_t kt, u64 nsec);
 
 /**
  * timespec_to_ktime - convert a timespec to ktime_t format
- *
  * @ts:		the timespec variable to convert
  *
  * Returns a ktime_t variable with the converted timespec value
@@ -207,7 +207,6 @@ static inline ktime_t timespec_to_ktime(const struct timespec ts)
 
 /**
  * timeval_to_ktime - convert a timeval to ktime_t format
- *
  * @tv:		the timeval variable to convert
  *
  * Returns a ktime_t variable with the converted timeval value
@@ -220,7 +219,6 @@ static inline ktime_t timeval_to_ktime(const struct timeval tv)
 
 /**
  * ktime_to_timespec - convert a ktime_t variable to timespec format
- *
  * @kt:		the ktime_t variable to convert
  *
  * Returns the timespec representation of the ktime value
@@ -233,7 +231,6 @@ static inline struct timespec ktime_to_timespec(const ktime_t kt)
 
 /**
  * ktime_to_timeval - convert a ktime_t variable to timeval format
- *
  * @kt:		the ktime_t variable to convert
  *
  * Returns the timeval representation of the ktime value