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[S390] cputime: add sparse checking and cleanup

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Make cputime_t and cputime64_t nocast to enable sparse checking to
detect incorrect use of cputime. Drop the cputime macros for simple
scalar operations. The conversion macros are still needed.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2011-12-15 14:56:09 +01:00
parent 55b02d2f44
commit 648616343c
23 changed files with 321 additions and 427 deletions
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62
include/asm-generic/cputime.h
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@@ -4,70 +4,64 @@
#include <linux/time.h>
#include <linux/jiffies.h>
typedef unsigned long cputime_t;
typedef unsigned long __nocast cputime_t;
#define cputime_zero (0UL)
#define cputime_one_jiffy jiffies_to_cputime(1)
#define cputime_max ((~0UL >> 1) - 1)
#define cputime_add(__a, __b) ((__a) + (__b))
#define cputime_sub(__a, __b) ((__a) - (__b))
#define cputime_div(__a, __n) ((__a) / (__n))
#define cputime_halve(__a) ((__a) >> 1)
#define cputime_eq(__a, __b) ((__a) == (__b))
#define cputime_gt(__a, __b) ((__a) > (__b))
#define cputime_ge(__a, __b) ((__a) >= (__b))
#define cputime_lt(__a, __b) ((__a) < (__b))
#define cputime_le(__a, __b) ((__a) <= (__b))
#define cputime_to_jiffies(__ct) (__ct)
#define cputime_to_jiffies(__ct) (__force unsigned long)(__ct)
#define cputime_to_scaled(__ct) (__ct)
#define jiffies_to_cputime(__hz) (__hz)
#define jiffies_to_cputime(__hz) (__force cputime_t)(__hz)
typedef u64 cputime64_t;
typedef u64 __nocast cputime64_t;
#define cputime64_zero (0ULL)
#define cputime64_add(__a, __b) ((__a) + (__b))
#define cputime64_sub(__a, __b) ((__a) - (__b))
#define cputime64_to_jiffies64(__ct) (__ct)
#define jiffies64_to_cputime64(__jif) (__jif)
#define cputime_to_cputime64(__ct) ((u64) __ct)
#define cputime64_gt(__a, __b) ((__a) > (__b))
#define cputime64_to_jiffies64(__ct) (__force u64)(__ct)
#define jiffies64_to_cputime64(__jif) (__force cputime64_t)(__jif)
#define nsecs_to_cputime64(__ct) nsecs_to_jiffies64(__ct)
#define nsecs_to_cputime64(__ct) \
jiffies64_to_cputime64(nsecs_to_jiffies64(__ct))
/*
* Convert cputime to microseconds and back.
*/
#define cputime_to_usecs(__ct) jiffies_to_usecs(__ct)
#define usecs_to_cputime(__msecs) usecs_to_jiffies(__msecs)
#define cputime_to_usecs(__ct) \
jiffies_to_usecs(cputime_to_jiffies(__ct));
#define usecs_to_cputime(__msecs) \
jiffies_to_cputime(usecs_to_jiffies(__msecs));
/*
* Convert cputime to seconds and back.
*/
#define cputime_to_secs(jif) ((jif) / HZ)
#define secs_to_cputime(sec) ((sec) * HZ)
#define cputime_to_secs(jif) (cputime_to_jiffies(jif) / HZ)
#define secs_to_cputime(sec) jiffies_to_cputime((sec) * HZ)
/*
* Convert cputime to timespec and back.
*/
#define timespec_to_cputime(__val) timespec_to_jiffies(__val)
#define cputime_to_timespec(__ct,__val) jiffies_to_timespec(__ct,__val)
#define timespec_to_cputime(__val) \
jiffies_to_cputime(timespec_to_jiffies(__val))
#define cputime_to_timespec(__ct,__val) \
jiffies_to_timespec(cputime_to_jiffies(__ct),__val)
/*
* Convert cputime to timeval and back.
*/
#define timeval_to_cputime(__val) timeval_to_jiffies(__val)
#define cputime_to_timeval(__ct,__val) jiffies_to_timeval(__ct,__val)
#define timeval_to_cputime(__val) \
jiffies_to_cputime(timeval_to_jiffies(__val))
#define cputime_to_timeval(__ct,__val) \
jiffies_to_timeval(cputime_to_jiffies(__ct),__val)
/*
* Convert cputime to clock and back.
*/
#define cputime_to_clock_t(__ct) jiffies_to_clock_t(__ct)
#define clock_t_to_cputime(__x) clock_t_to_jiffies(__x)
#define cputime_to_clock_t(__ct) \
jiffies_to_clock_t(cputime_to_jiffies(__ct))
#define clock_t_to_cputime(__x) \
jiffies_to_cputime(clock_t_to_jiffies(__x))
/*
* Convert cputime64 to clock.
*/
#define cputime64_to_clock_t(__ct) jiffies_64_to_clock_t(__ct)
#define cputime64_to_clock_t(__ct) \
jiffies_64_to_clock_t(cputime64_to_jiffies64(__ct))
#endif