linux-stable.git/include/linux/hrtimer.h, branch linux-2.6.39.y

hrtimer: Update hrtimer->state documentation

2011-03-10T18:15:58+00:00

We changed some of the state bits and combinations thereof over time,
but never updated the documentation.

Signed-off-by: Thomas Gleixner

timers: Add CLOCK_BOOTTIME hrtimer base

2011-02-21T20:53:08+00:00

CLOCK_MONOTONIC stops while the system is in suspend. This is because
to applications system suspend is invisible. However, there is a
growing set of applications that are wanting to be suspend-aware,
but do not want to deal with the complications of CLOCK_REALTIME
(which might jump around if settimeofday is called).

For these applications, I propose a new clockid: CLOCK_BOOTTIME.
CLOCK_BOOTTIME is idential to CLOCK_MONOTONIC, except it also
includes any time spent in suspend.

This patch add hrtimer base for CLOCK_BOOTTIME, using
get_monotonic_boottime/ktime_get_boottime, to allow
in kernel users to set timers against.

CC: Jamie Lokier 
CC: Thomas Gleixner 
CC: Alexander Shishkin 
CC: Arve Hjønnevåg 
Signed-off-by: John Stultz

time: Introduce get_monotonic_boottime and ktime_get_boottime

2011-02-21T20:53:05+00:00

This adds new functions that return the monotonic time since boot
(in other words, CLOCK_MONOTONIC + suspend time).

CC: Jamie Lokier 
CC: Thomas Gleixner 
CC: Alexander Shishkin 
CC: Arve Hjønnevåg 
Signed-off-by: John Stultz

hrtimers: extend hrtimer base code to handle more then 2 clockids

2011-02-21T20:53:04+00:00

The hrtimer code is written mainly with CLOCK_REALTIME and CLOCK_MONOTONIC
in mind. These are clockids 0 and 1 resepctively. However, if we are
to introduce any new hrtimer bases, using new clockids, we have to skip
the cputimers (clockids 2,3) as well as other clockids that may not impelement
timers.

This patch adds a little bit of indirection between the clockid and
the base, so that we can extend the base by one when we add
a new clockid at number 7 or so.

CC: Jamie Lokier 
CC: Thomas Gleixner 
CC: Alexander Shishkin 
CC: Arve Hjønnevåg 
Signed-off-by: John Stultz

hrtimer.h: fix kernel-doc warning

2011-01-10T15:38:53+00:00

Fix new kernel-doc notation warning in hrtimer.h:

  Warning(include/linux/hrtimer.h:150): Excess struct/union/enum/typedef member 'first' description in 'hrtimer_clock_base'

Signed-off-by: Randy Dunlap 
Signed-off-by: Linus Torvalds

hrtimers: Convert hrtimers to use timerlist infrastructure

2010-12-10T19:54:35+00:00

Converts the hrtimer code to use the new timerlist infrastructure

Signed-off-by: John Stultz 
LKML Reference: <1290136329-18291-3-git-send-email-john.stultz@linaro.org>
Reviewed-by: Thomas Gleixner 
CC: Alessandro Zummo 
CC: Thomas Gleixner 
CC: Richard Cochran

hrtimer: Remove stale comment on curr_timer

2010-11-10T11:39:52+00:00

curr_timer doesn't resident in struct hrtimer_cpu_base anymore.

Signed-off-by: Yong Zhang 
LKML-Reference: <1287892253-2587-1-git-send-email-yong.zhang0@gmail.com>
Signed-off-by: Thomas Gleixner

hrtimers: Provide schedule_hrtimeout for CLOCK_REALTIME

2010-04-06T19:50:03+00:00

The current version of schedule_hrtimeout() always uses the
monotonic clock. Some system calls such as mq_timedsend()
and mq_timedreceive(), however, require the use of the wall
clock due to the definition of the system call.

This patch provides the infrastructure to use schedule_hrtimeout() 
with a CLOCK_REALTIME timer.

Signed-off-by: Carsten Emde 
Tested-by: Pradyumna Sampath 
Cc: Andrew Morton 
Cc: Arjan van de Veen 
LKML-Reference: <20100402204331.167439615@osadl.org>
Signed-off-by: Thomas Gleixner

hrtimers: Convert to raw_spinlocks

2009-12-14T22:55:34+00:00

Convert locks which cannot be sleeping locks in preempt-rt to
raw_spinlocks.

Signed-off-by: Thomas Gleixner 
Acked-by: Peter Zijlstra 
Acked-by: Ingo Molnar

hrtimer: move timer stats helper functions to hrtimer.c

2009-12-10T12:08:11+00:00

There is no reason to make timer_stats_hrtimer_set_start_info and
friends visible to the rest of the kernel. So move all of them to
hrtimer.c.  Also make timer_stats_hrtimer_set_start_info a static
inline function so it gets inlined and we avoid another function call.
Based on a patch by Thomas Gleixner.

Signed-off-by: Heiko Carstens 
LKML-Reference: <20091210095629.GC4144@osiris.boeblingen.de.ibm.com>
Signed-off-by: Thomas Gleixner