linux-stable.git/include/linux/ktime.h, branch linux-2.6.16.y

fix MTIME_SEC_MAX on 32-bit

2007-04-08T22:54:30+00:00

The maximum seconds value we can handle on 32bit is LONG_MAX.

Signed-off-by: Adrian Bunk

prevent timespec/timeval to ktime_t overflow

2007-04-08T22:03:30+00:00

Frank v.  Waveren pointed out that on 64bit machines the timespec to
ktime_t conversion might overflow.  This is also true for timeval to
time_t conversions.  This breaks a "sleep inf" on 64bit machines.

While a timespec/timeval with tx.sec = MAX_LONG is valid by specification
the internal representation of ktime_t is based on nanoseconds.  The
conversion of seconds to nanoseconds overflows for seconds values >=
(MAX_LONG / NSEC_PER_SEC).

Check the seconds argument to the conversion and limit it to the maximum
time which can be represented by ktime_t.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Adrian Bunk

[PATCH] hrtimer: fix multiple macro argument expansion

2006-02-15T23:32:22+00:00

For two macros the arguments were expanded twice, change them to inline
functions to avoid it.

Signed-off-by: Roman Zippel 
Acked-by: Ingo Molnar 
Acked-by: Thomas Gleixner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] hrtimers: add back lost credit lines

2006-02-01T16:53:13+00:00

At some point we added credits to people who actively helped to bring
k/hr-timers along.  This was lost in the big code revamp.  Add it back.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[hrtimer] Change resolution storage to ktime_t format

2006-01-12T10:36:14+00:00

Change the storage format of the per base resolution to ktime_t to
make it easier accessible in the hrtimers code.

Change the resolution from (NSEC_PER_SEC/HZ) to TICK_NSEC as Roman
pointed out. TICK_NSEC is closer to the real resolution.

Signed-off-by: Thomas Gleixner

[PATCH] hrtimer: hrtimer core code

2006-01-10T16:01:37+00:00

hrtimer subsystem core.  It is initialized at bootup and expired by the timer
interrupt, but is otherwise not utilized by any other subsystem yet.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] hrtimer: introduce ktime_t time format

2006-01-10T16:01:37+00:00

- introduce ktime_t: nanosecond-resolution time format.

- eliminate the plain s64 scalar type, and always use the union.
  This simplifies the arithmetics. Idea from Roman Zippel.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds