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SubjectRe: [PATCH v4 00/17] 64-bit friendly generic sched_clock()
On 07/18/2013 07:21 PM, Stephen Boyd wrote:
> This patchset adds support for 64 bit counters in the generic
> sched_clock code and converts drivers over to use it. Based
> on v3.11-rc1.
>
> Changes since v3:
> * Move to use seqcount to fix issues with 64-bit cyc counters
> * Move to hrtimer to fix underflow/overflow errors in wraparound
> calculation
> * Use of 1 hour in clocks_calc_mult_shift
> * Converted over drivers in drivers/clocksource
>
> Stephen Boyd (17):
> clocksource: Extract max nsec calculation into separate function
> sched_clock: Use seqcount instead of rolling our own
> sched_clock: Use an hrtimer instead of timer
> sched_clock: Add support for >32 bit sched_clock
> arch_timer: Move to generic sched_clock framework
> sched_clock: Remove sched_clock_func() hook
> clocksource: bcm2835: Switch to sched_clock_register()
> ocksource: dbx500-prcmu: Switch to sched_clock_register()
> clocksource: dw_apb_timer_of: Switch to sched_clock_register()
> clocksource: mxs_timer: Switch to sched_clock_register()
> clocksource: nomadik: Switch to sched_clock_register()
> clocksource: samsung_pwm_timer: Switch to sched_clock_register()
> clocksource: tegra: Switch to sched_clock_register()
> clocksource: time-armada-370-xp: Switch to sched_clock_register()
> clocksource: sirf: Switch to sched_clock_register() and use 64 bits
> clocksource: vf_pit_timer: Switch to sched_clock_register()
> sched_clock: Deprecate setup_sched_clock()
>
> arch/arm/kernel/arch_timer.c | 14 ----
> arch/arm64/Kconfig | 1 +
> arch/arm64/kernel/time.c | 10 ---
> drivers/clocksource/arm_arch_timer.c | 4 ++
> drivers/clocksource/bcm2835_timer.c | 4 +-
> drivers/clocksource/clksrc-dbx500-prcmu.c | 5 +-
> drivers/clocksource/dw_apb_timer_of.c | 4 +-
> drivers/clocksource/mxs_timer.c | 4 +-
> drivers/clocksource/nomadik-mtu.c | 4 +-
> drivers/clocksource/samsung_pwm_timer.c | 4 +-
> drivers/clocksource/tegra20_timer.c | 4 +-
> drivers/clocksource/time-armada-370-xp.c | 4 +-
> drivers/clocksource/timer-prima2.c | 6 +-
> drivers/clocksource/vf_pit_timer.c | 4 +-
> include/linux/clocksource.h | 2 +
> include/linux/sched_clock.h | 7 +-
> kernel/time/clocksource.c | 45 ++++++++-----
> kernel/time/sched_clock.c | 105 +++++++++++++++---------------
> 18 files changed, 116 insertions(+), 115 deletions(-)
>

I ran 32-bit and 64-bit kernels with these patches on the Versatile Express
software model and things looked fine, so for the applicable patches,

Tested-by: Christopher Covington <cov@codeaurora.org>

--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by the Linux Foundation.


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