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Date: Fri, 11 Jul 2014 13:43:58 -0000
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: John Stultz <john.stultz@...aro.org>,
Peter Zijlstra <peterz@...radead.org>
Subject: [patch 00/55] timekeeping: 2038, optimizations, NMI safe accessors
The patch series addresses the following points:
1) Make the core timekeeping code ready for 2038
This is work done by John Stultz with a few clenaups and
modifications from me.
This switches ktime_t to the scalar nanoseconds format.
We can ged rid of the union now, but that wants to be done at rc1
time with a coccinelle script.
2) Optimize the timekeeper data structure
Better cache layout
3) Avoid timespec/ktime_t conversions in the core code.
Results in smaller code for the ktime_t based interfaces.
4) Add pure nanaoseconds based interfaces and cleanup places all
over the tree which do silly back and forth conversions from
timespecs to nanoseconds.
5) Provide NMI safe accessors to clock monotonic and monotonic_raw
Useful for instrumentation, tracing etc. as it allows correlated
time information of kernel and user space.
The series is against tip/timers/core + 3.16-rc4 merged in. It's also
available in git at:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tglx/timers/core
Thanks,
tglx
----
arch/arm/Kconfig | 1
arch/arm/common/bL_switcher.c | 16
arch/hexagon/Kconfig | 1
arch/powerpc/platforms/cell/spu_base.c | 11
arch/powerpc/platforms/cell/spufs/context.c | 4
arch/powerpc/platforms/cell/spufs/file.c | 4
arch/powerpc/platforms/cell/spufs/sched.c | 4
arch/s390/Kconfig | 1
arch/tile/kernel/time.c | 9
arch/tile/kernel/vdso/vgettimeofday.c | 7
arch/x86/Kconfig | 2
arch/x86/kernel/tsc.c | 14
arch/x86/kvm/x86.c | 50 -
drivers/char/hangcheck-timer.c | 10
drivers/connector/cn_proc.c | 36 -
drivers/gpu/drm/drm_irq.c | 16
drivers/gpu/drm/i915/i915_drv.h | 2
drivers/gpu/drm/i915/i915_gem.c | 33
drivers/gpu/drm/i915/intel_pm.c | 12
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 4
drivers/gpu/drm/vmwgfx/vmwgfx_marker.c | 44 -
drivers/hwmon/ibmaem.c | 6
drivers/input/evdev.c | 7
drivers/mfd/cros_ec_spi.c | 7
drivers/misc/ioc4.c | 7
drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 16
drivers/net/wireless/ath/ath9k/hw.c | 7
fs/lockd/mon.c | 4
fs/proc/array.c | 7
fs/timerfd.c | 6
include/linux/hrtimer.h | 14
include/linux/iio/iio.h | 9
include/linux/ktime.h | 228 +-----
include/linux/mlx5/driver.h | 4
include/linux/sched.h | 8
include/linux/seqlock.h | 16
include/linux/time.h | 65 -
include/linux/time64.h | 191 +++++
include/linux/timekeeper_internal.h | 108 +--
include/linux/timekeeping.h | 204 ++++++
kernel/acct.c | 10
kernel/delayacct.c | 52 -
kernel/fork.c | 5
kernel/time/Kconfig | 9
kernel/time/clocksource.c | 12
kernel/time/hrtimer.c | 79 --
kernel/time/ntp.c | 15
kernel/time/ntp_internal.h | 2
kernel/time/posix-timers.c | 2
kernel/time/tick-internal.h | 2
kernel/time/time.c | 64 +
kernel/time/timekeeping.c | 881 +++++++++++++++-----------
kernel/time/timekeeping.h | 20
kernel/time/timekeeping_debug.c | 2
kernel/time/timekeeping_internal.h | 17
kernel/trace/trace.c | 12
kernel/tsacct.c | 19
57 files changed, 1339 insertions(+), 1059 deletions(-)
--
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