[PATCH] cputime: simplifiy generic cputime_to_secs/secs_to_cputime

The cputime_to_secs and secs_to_cputime primitives in
include/asm-generic/cputime.h can be simplified since the default cputime
implementation assumes that cputime is measured in jiffies.  The
intermediate conversion to milliseconds is superflous.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-generic/cputime.h

@@ -35,8 +35,8 @@ typedef u64 cputime64_t;
 /*
  * Convert cputime to seconds and back.
  */
-#define cputime_to_secs(__ct)		(jiffies_to_msecs(__ct) / 1000)
-#define secs_to_cputime(__secs)		(msecs_to_jiffies((__secs) * 1000))
+#define cputime_to_secs(jif)		((jif) / HZ)
+#define secs_to_cputime(sec)		((sec) * HZ)
 
 /*
  * Convert cputime to timespec and back.