From: Will Deacon <will@kernel.org> To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, "Will Deacon" <will@kernel.org>, "Frederic Weisbecker" <fweisbec@gmail.com>, "Thomas Gleixner" <tglx@linutronix.de>, "Marc Zyngier" <maz@kernel.org>, "Lorenzo Colitti" <lorenzo@google.com>, "John Stultz" <john.stultz@linaro.org>, "Stephen Boyd" <sboyd@kernel.org>, "Mika Penttilä" <mika.penttila@nextfour.com>, kernel-team@android.com Subject: [PATCH v2 0/5] tick/broadcast: Allow per-cpu timers to be used instead of broadcast Date: Mon, 24 May 2021 23:18:13 +0100 [thread overview] Message-ID: <20210524221818.15850-1-will@kernel.org> (raw) 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
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will@kernel.org> To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, "Will Deacon" <will@kernel.org>, "Frederic Weisbecker" <fweisbec@gmail.com>, "Thomas Gleixner" <tglx@linutronix.de>, "Marc Zyngier" <maz@kernel.org>, "Lorenzo Colitti" <lorenzo@google.com>, "John Stultz" <john.stultz@linaro.org>, "Stephen Boyd" <sboyd@kernel.org>, "Mika Penttilä" <mika.penttila@nextfour.com>, kernel-team@android.com Subject: [PATCH v2 0/5] tick/broadcast: Allow per-cpu timers to be used instead of broadcast Date: Mon, 24 May 2021 23:18:13 +0100 [thread overview] Message-ID: <20210524221818.15850-1-will@kernel.org> (raw) 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-05-24 22:18 UTC|newest] Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-05-24 22:18 Will Deacon [this message] 2021-05-24 22:18 ` [PATCH v2 0/5] tick/broadcast: Allow per-cpu timers to be used instead of broadcast Will Deacon 2021-05-24 22:18 ` [PATCH v2 1/5] tick/broadcast: Drop unneeded CONFIG_GENERIC_CLOCKEVENTS_BROADCAST guard Will Deacon 2021-05-24 22:18 ` Will Deacon 2021-05-31 15:07 ` [tip: timers/core] " tip-bot2 for Will Deacon 2021-05-24 22:18 ` [PATCH v2 2/5] tick/broadcast: Split __tick_broadcast_oneshot_control() into a helper Will Deacon 2021-05-24 22:18 ` Will Deacon 2021-05-27 7:23 ` Xin Hao 2021-05-27 7:23 ` Xin Hao 2021-05-27 8:22 ` Will Deacon 2021-05-27 8:22 ` Will Deacon 2021-05-27 11:35 ` Xin Hao 2021-05-27 11:35 ` Xin Hao 2021-05-27 11:55 ` Will Deacon 2021-05-27 11:55 ` Will Deacon 2021-05-27 11:56 ` Will Deacon 2021-05-27 11:56 ` Will Deacon 2021-05-31 14:29 ` Thomas Gleixner 2021-05-31 14:29 ` Thomas Gleixner 2021-06-01 12:13 ` Will Deacon 2021-06-01 12:13 ` Will Deacon 2021-06-01 18:14 ` Thomas Gleixner 2021-06-01 18:14 ` Thomas Gleixner 2021-05-31 15:06 ` [tip: timers/core] " tip-bot2 for Will Deacon 2021-05-24 22:18 ` [PATCH v2 3/5] tick/broadcast: Prefer per-cpu oneshot wakeup timers to broadcast Will Deacon 2021-05-24 22:18 ` Will Deacon 2021-05-31 15:06 ` [tip: timers/core] " tip-bot2 for Will Deacon 2021-05-24 22:18 ` [PATCH v2 4/5] tick/broadcast: Program wakeup timer when entering idle if required Will Deacon 2021-05-24 22:18 ` Will Deacon 2021-05-31 15:06 ` [tip: timers/core] " tip-bot2 for Will Deacon 2021-05-24 22:18 ` [PATCH v2 5/5] timer_list: Print name of per-cpu wakeup device Will Deacon 2021-05-24 22:18 ` Will Deacon 2021-05-31 15:06 ` [tip: timers/core] " tip-bot2 for Will Deacon
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20210524221818.15850-1-will@kernel.org \ --to=will@kernel.org \ --cc=fweisbec@gmail.com \ --cc=john.stultz@linaro.org \ --cc=kernel-team@android.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=lorenzo@google.com \ --cc=maz@kernel.org \ --cc=mika.penttila@nextfour.com \ --cc=sboyd@kernel.org \ --cc=tglx@linutronix.de \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.