pipe: allow passing around of ops private pointer

[safe/jmp/linux-2.6] / include / linux / ktime.h

diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index 611f17f..2b139f6 100644 (file)
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -43,7 +43,7 @@
  * plain scalar nanosecond based representation can be selected by the
  * config switch CONFIG_KTIME_SCALAR.
  */
-typedef union {
+union ktime {
        s64     tv64;
 #if BITS_PER_LONG != 64 && !defined(CONFIG_KTIME_SCALAR)
        struct {
@@ -54,10 +54,16 @@ typedef union {
 # endif
        } tv;
 #endif
-} ktime_t;
+};
+
+typedef union ktime ktime_t;           /* Kill this */
 
 #define KTIME_MAX                      ((s64)~((u64)1 << 63))
-#define KTIME_SEC_MAX                  (KTIME_MAX / NSEC_PER_SEC)
+#if (BITS_PER_LONG == 64)
+# define KTIME_SEC_MAX                 (KTIME_MAX / NSEC_PER_SEC)
+#else
+# define KTIME_SEC_MAX                 LONG_MAX
+#endif
 
 /*
  * ktime_t definitions when using the 64-bit scalar representation:
@@ -163,7 +169,7 @@ static inline ktime_t ktime_sub(const ktime_t lhs, const ktime_t rhs)
  * @add1:      addend1
  * @add2:      addend2
  *
- * Returns the sum of addend1 and addend2
+ * Returns the sum of @add1 and @add2.
  */
 static inline ktime_t ktime_add(const ktime_t add1, const ktime_t add2)
 {
@@ -189,7 +195,7 @@ static inline ktime_t ktime_add(const ktime_t add1, const ktime_t add2)
  * @kt:                addend
  * @nsec:      the scalar nsec value to add
  *
- * Returns the sum of kt and nsec in ktime_t format
+ * Returns the sum of @kt and @nsec in ktime_t format
  */
 extern ktime_t ktime_add_ns(const ktime_t kt, u64 nsec);
 
@@ -246,7 +252,7 @@ static inline struct timeval ktime_to_timeval(const ktime_t kt)
  * ktime_to_ns - convert a ktime_t variable to scalar nanoseconds
  * @kt:                the ktime_t variable to convert
  *
- * Returns the scalar nanoseconds representation of kt
+ * Returns the scalar nanoseconds representation of @kt
  */
 static inline s64 ktime_to_ns(const ktime_t kt)
 {
@@ -255,14 +261,31 @@ static inline s64 ktime_to_ns(const ktime_t kt)
 
 #endif
 
+/**
+ * ktime_equal - Compares two ktime_t variables to see if they are equal
+ * @cmp1:      comparable1
+ * @cmp2:      comparable2
+ *
+ * Compare two ktime_t variables, returns 1 if equal
+ */
+static inline int ktime_equal(const ktime_t cmp1, const ktime_t cmp2)
+{
+       return cmp1.tv64 == cmp2.tv64;
+}
+
+static inline s64 ktime_to_us(const ktime_t kt)
+{
+       struct timeval tv = ktime_to_timeval(kt);
+       return (s64) tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
+}
+
 /*
  * The resolution of the clocks. The resolution value is returned in
  * the clock_getres() system call to give application programmers an
  * idea of the (in)accuracy of timers. Timer values are rounded up to
  * this resolution values.
  */
-#define KTIME_REALTIME_RES     (ktime_t){ .tv64 = TICK_NSEC }
-#define KTIME_MONOTONIC_RES    (ktime_t){ .tv64 = TICK_NSEC }
+#define KTIME_LOW_RES          (ktime_t){ .tv64 = TICK_NSEC }
 
 /* Get the monotonic time in timespec format: */
 extern void ktime_get_ts(struct timespec *ts);