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SubjectWhat's in hrtimer.git for 2.6.28
The hrtimer.git tree contains the patches that turn select/poll/etc into
nanosecond accurate userland APIs (using hrtimers), increasing the
quality of behavior that Linux gives to desktop and multimedia apps.

In addition, this patchkit also turns hrtimers into so called "range
timers", which counters (and in fact improves) the power effects of
using hrtimers for select/poll.

These patches have been posted to lkml and in addition LWN had an
article about this series in its weekly kernel section.


Updating linus
The following changes since commit 9824b8f11373b0df806c135a342da9319ef1d893:
Linus Torvalds (1):
Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-hrtimer.git master

Arjan van de Ven (24):
select: Introduce a hrtimeout function
select: switch select() and poll() over to hrtimers
hrtimer: add abstraction functions for accessing the "expires" member
hrtimer: convert kvm to the new hrtimer apis
hrtimer: convert timerfd to the new hrtimer apis
hrtimer: convert net::sched_cbq to the new hrtimer apis
hrtimer: convert kernel/* to the new hrtimer apis
hrtimer: convert powerpc/oprofile to the new hrtimer apis
hrtimer: convert kvm-ia64 to the new hrtimer apis
hrtimer: convert s390 to the new hrtimer apis
hrtimer: convert sound/ to the new hrtimer apis
hrtimer: rename the "expires" struct member to avoid accidental usage
hrtimer: turn hrtimers into range timers
hrtimer: create a "timer_slack" field in the task struct
hrtimer: make select() and poll() use the hrtimer range feature
hrtimer: fix build bug found by Ingo
hrtimer: another build fix
hrtimer: add a hrtimer_start_range() function
hrtimer: incorporate feedback from Peter Zijlstra
hrtimer: show the timer ranges in /proc/timer_list
hrtimer: fix signed/unsigned bug in slack estimator
hrtimer: make the nanosleep() syscall use the per process slack
hrtimer: make the futex() system call use the per process slack value
hrtimer: peek at the timer queue just before going idle

Thomas Gleixner (3):
select: add a timespec_add_safe() function
select: add poll_select_set_timeout() and poll_select_copy_remaining() helpers
select: add a poll specific struct to the restart_block union

arch/ia64/kvm/kvm-ia64.c | 2 +-
arch/powerpc/oprofile/cell/spu_profiler.c | 2 +-
arch/x86/kvm/i8254.c | 6 +-
arch/x86/kvm/lapic.c | 6 +-
drivers/cpuidle/cpuidle.c | 7 +
drivers/s390/crypto/ap_bus.c | 6 +-
fs/compat.c | 187 +++++---------
fs/select.c | 396 ++++++++++++++++-------------
fs/timerfd.c | 8 +-
include/linux/hrtimer.h | 92 +++++++-
include/linux/init_task.h | 1 +
include/linux/poll.h | 8 +-
include/linux/prctl.h | 7 +
include/linux/sched.h | 6 +
include/linux/thread_info.h | 8 +
include/linux/time.h | 4 +
kernel/fork.c | 2 +
kernel/futex.c | 11 +-
kernel/hrtimer.c | 212 ++++++++++++++--
kernel/posix-timers.c | 10 +-
kernel/rtmutex.c | 3 +-
kernel/sched.c | 7 +-
kernel/sys.c | 10 +
kernel/time.c | 18 ++
kernel/time/ntp.c | 3 +-
kernel/time/tick-sched.c | 21 +-
kernel/time/timer_list.c | 8 +-
net/sched/sch_cbq.c | 7 +-
sound/drivers/pcsp/pcsp_lib.c | 5 +-
29 files changed, 694 insertions(+), 369 deletions(-)

--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org


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