[-mm PATCH 4/11] Time: clocksource infrastructure - remove nsec_t

[john stultz <johnstul@us.ibm.com>]

Removes nsec_t usage as suggested by Roman Zippel
Also moves the cycle_t definition to clocksource.h

Signed-off-by: John Stultz <johnstul@us.ibm.com>

 include/linux/clocksource.h |   21 ++++++++++++---------
 1 files changed, 12 insertions(+), 9 deletions(-)

Index: mm-merge/include/linux/clocksource.h
===================================================================
--- mm-merge.orig/include/linux/clocksource.h
+++ mm-merge/include/linux/clocksource.h
@@ -15,6 +15,9 @@
 #include <asm/div64.h>
 #include <asm/io.h>
 
+/* clocksource cycle base type */
+typedef u64 cycle_t;
+
 /**
  * struct clocksource - hardware abstraction for a free running counter
  *	Provides mostly state-free accessors to the underlying hardware.
@@ -169,14 +172,14 @@ static inline int ppm_to_mult_adj(struct
  *
  * XXX - This could use some mult_lxl_ll() asm optimization
  */
-static inline nsec_t cyc2ns(struct clocksource *cs, int ntp_adj, cycle_t cycles)
+static inline s64 cyc2ns(struct clocksource *cs, int ntp_adj, cycle_t cycles)
 {
-	u64 ret = (u64)cycles;
+	u64 ret = cycles;
 
 	ret *= (cs->mult + ntp_adj);
 	ret >>= cs->shift;
 
-	return (nsec_t)ret;
+	return ret;
 }
 
 /**
@@ -192,10 +195,10 @@ static inline nsec_t cyc2ns(struct clock
  *
  * XXX - This could use some mult_lxl_ll() asm optimization.
  */
-static inline nsec_t cyc2ns_rem(struct clocksource *cs, int ntp_adj,
+static inline s64 cyc2ns_rem(struct clocksource *cs, int ntp_adj,
 				cycle_t cycles, u64* rem)
 {
-	u64 ret = (u64)cycles;
+	u64 ret = cycles;
 
 	ret *= (cs->mult + ntp_adj);
 	if (rem) {
@@ -204,7 +207,7 @@ static inline nsec_t cyc2ns_rem(struct c
 	}
 	ret >>= cs->shift;
 
-	return (nsec_t)ret;
+	return ret;
 }
 
 
@@ -224,7 +227,7 @@ static inline nsec_t cyc2ns_rem(struct c
  */
 struct clocksource_interval {
 	cycle_t cycles;
-	nsec_t nsecs;
+	s64 nsecs;
 	u64 remainder;
 	u64 remainder_ns_overflow;
 };
@@ -278,10 +281,10 @@ calculate_clocksource_interval(struct cl
  *
  * Unless you're the timeofday_periodic_hook, you should not be using this!
  */
-static inline nsec_t cyc2ns_fixed_rem(struct clocksource_interval interval,
+static inline s64 cyc2ns_fixed_rem(struct clocksource_interval interval,
 				      cycle_t *cycles, u64* rem)
 {
-	nsec_t delta_nsec = 0;
+	s64 delta_nsec = 0;
 
 	while (*cycles > interval.cycles) {
 		delta_nsec += interval.nsecs;
-
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