Re: [GIT PULL V10] irq: next irq tracking

[Daniel Lezcano]

Hi,

this series has been posted several times and all the comments have been
take into account.

Can you clarify the situation with this series regarding merging?

Thanks.

  -- Daniel

On 12/06/2017 15:51, Daniel Lezcano wrote:
> Hi Thomas,
> 
> this pull request contains the next irq prediction as posted for V10
> [1] which takes into account all the commments. It is based on top of
> v4.12-rc5.
> 
> As previously discussed the code is not enabled by default, hence compiled out.
> 
> The first patch adds the IRQF_TIMER flag to the timers which are percpu in
> order to discard any timing measurement when the interrupt is coming from a
> timer.
> 
> The second patch adds a circular buffer and the small routine to store the
> local time when an interrupt occurs. The t-uple <irq,timestamp> are encoded
> together into a single 64bits as suggested by Nicolas Pitre.
> 
> The third patch provides the mathematic to compute the regular intervals. The
> rational is in changelog and the math is commented in details in the code.
> 
> Thanks.
> 
>   -- Daniel
> 
> [1] https://www.spinics.net/lists/kernel/msg2509177.html
> 
> 
> The following changes since commit 32c1431eea4881a6b17bd7c639315010aeefa452:
> 
>   Linux 4.12-rc5 (2017-06-11 16:48:20 -0700)
> 
> are available in the git repository at:
> 
>   http://git@xxxxxxxxxxxxxx/people/daniel.lezcano/linux.git next-irq/4.13
> 
> for you to fetch changes up to 1ed971bc878ede444d10f8a24bc9963938f0b7c6:
> 
>   irq: Compute the periodic interval for interrupts (2017-06-12 15:06:00 +0200)
> 
> ----------------------------------------------------------------
> Daniel Lezcano (3):
>       irq: Allow to pass the IRQF_TIMER flag with percpu irq request
>       irq: Track the interrupt timings
>       irq: Compute the periodic interval for interrupts
> 
>  arch/arm/kernel/smp_twd.c                |   3 +-
>  drivers/clocksource/arc_timer.c          |   4 +--
>  drivers/clocksource/arm_arch_timer.c     |  20 ++++++++-----
>  drivers/clocksource/arm_global_timer.c   |   4 +--
>  drivers/clocksource/exynos_mct.c         |   7 +++--
>  drivers/clocksource/qcom-timer.c         |   4 +--
>  drivers/clocksource/time-armada-370-xp.c |   9 +++---
>  drivers/clocksource/timer-nps.c          |   6 ++--
>  include/linux/interrupt.h                |  17 ++++++++++-
>  kernel/irq/Kconfig                       |   3 ++
>  kernel/irq/Makefile                      |   1 +
>  kernel/irq/handle.c                      |   2 ++
>  kernel/irq/internals.h                   | 103 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  kernel/irq/manage.c                      |  18 +++++++----
>  kernel/irq/timings.c                     | 366 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  15 files changed, 536 insertions(+), 31 deletions(-)
>  create mode 100644 kernel/irq/timings.c
> 


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