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Subject[PATCH v2 0/5] tick/broadcast: Allow per-cpu timers to be used instead of broadcast
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Hi all,

This is version two of the series I posted last week:

https://lore.kernel.org/r/20210520184705.10845-1-will@kernel.org

This patch series adds support for hardware where the per-cpu tick timer
cannot wake up from deep idle states (i.e. CLOCK_EVT_FEAT_C3STOP is set)
yet there is a secondary per-cpu timer which is generally less preferable
(i.e. slow to access) yet capable of delivering the wakeup.

Changes since v1 include:

* Fixed module refcounting and use of clockevents_exchange_device()
* Require CLOCK_EVT_FEAT_PERCPU for new wakeup per-cpu source
* Fix transition to oneshot mode while idle
* Tested on my x86 laptop

Cheers,

Will

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Lorenzo Colitti <lorenzo@google.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: kernel-team@android.com

--->8

Will Deacon (5):
tick/broadcast: Drop unneeded CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
guard
tick/broadcast: Split __tick_broadcast_oneshot_control() into a helper
tick/broadcast: Prefer per-cpu oneshot wakeup timers to broadcast
tick/broadcast: Program wakeup timer when entering idle if required
timer_list: Print name of per-cpu wakeup device

kernel/time/tick-broadcast.c | 143 +++++++++++++++++++++++++++++++----
kernel/time/tick-common.c | 2 +-
kernel/time/tick-internal.h | 5 +-
kernel/time/timer_list.c | 10 ++-
4 files changed, 140 insertions(+), 20 deletions(-)

--
2.31.1.818.g46aad6cb9e-goog

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