From: Catalin Marinas <catalin.marinas@arm.com>
To: Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>
Cc: "linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"daniel.lezcano@linaro.org" <daniel.lezcano@linaro.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
Mark Rutland <Mark.Rutland@arm.com>,
Sudeep Holla <Sudeep.Holla@arm.com>,
Charles Garcia-Tobin <Charles.Garcia-Tobin@arm.com>,
Nicolas Pitre <nico@linaro.org>, Rob Herring <robh+dt@kernel.org>,
"grant.likely@linaro.org" <grant.likely@linaro.org>,
Peter De Schrijver <pdeschrijver@nvidia.com>,
Santosh Shilimkar <santosh.shilimkar@ti.com>,
Amit Kucheria <amit.kucheria@linaro.org>,
Vincent Guittot <vincent.guittot@linaro.org>,
Antti Miettinen <ananaza@iki.fi>,
Stephen Boyd <sboyd@codeaurora.org>,
Kevin Hilman <khilman@linaro.org>,
Sebastian Capella <sebcape@gmail.com>,
Tomasz Figa <t.figa@samsung.com>, Mark Brown <broonie>
Subject: Re: [PATCH v8 6/8] drivers: cpuidle: CPU idle ARM64 driver
Date: Thu, 4 Sep 2014 17:03:20 +0100 [thread overview]
Message-ID: <20140904160320.GB22354@arm.com> (raw)
In-Reply-To: <20140903173740.GJ1824@e102568-lin.cambridge.arm.com>
On Wed, Sep 03, 2014 at 06:37:40PM +0100, Lorenzo Pieralisi wrote:
> On Mon, Sep 01, 2014 at 04:28:42PM +0100, Lorenzo Pieralisi wrote:
> > This patch implements a generic CPU idle driver for ARM64 machines.
> >
> > It relies on the DT idle states infrastructure to initialize idle
> > states count and respective parameters. Current code assumes the driver
> > is managing idle states on all possible CPUs but can be easily
> > generalized to support heterogenous systems and build cpumasks at
> > runtime using MIDRs or DT cpu nodes compatible properties.
> >
> > The driver relies on the arm64 CPU operations to call the idle
> > initialization hook used to parse and save suspend back-end specific
> > idle states information upon probing.
> >
> > Idle state index 0 is always initialized as a simple wfi state, ie always
> > considered present and functional on all ARM64 platforms.
> >
> > Idle state indices higher than 0 trigger idle state entry by calling
> > the cpu_suspend function, that triggers the suspend operation through
> > the CPU operations suspend back-end hook. cpu_suspend passes the idle
> > state index as a parameter so that the CPU operations suspend back-end
> > can retrieve the required idle state data by using the idle state
> > index to execute a look-up on its internal data structures.
> >
> > Reviewed-by: Ashwin Chaugule <ashwin.chaugule@linaro.org>
> > Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
> > Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
>
> This patch should be ready to go too, is it ok if I split the series
> in arm64 arch specific patches (will ask Catalin to pull) and CPUidle ones
> (inclusive of DT bindings and !!this patch!!) and send two separate pull
> requests ?
If Daniel/Rafael don't have any objection, I can take the whole series
through the arm64 tree (it seems that patches have been already acked by
Daniel).
--
Catalin
WARNING: multiple messages have this Message-ID (diff)
From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v8 6/8] drivers: cpuidle: CPU idle ARM64 driver
Date: Thu, 4 Sep 2014 17:03:20 +0100 [thread overview]
Message-ID: <20140904160320.GB22354@arm.com> (raw)
In-Reply-To: <20140903173740.GJ1824@e102568-lin.cambridge.arm.com>
On Wed, Sep 03, 2014 at 06:37:40PM +0100, Lorenzo Pieralisi wrote:
> On Mon, Sep 01, 2014 at 04:28:42PM +0100, Lorenzo Pieralisi wrote:
> > This patch implements a generic CPU idle driver for ARM64 machines.
> >
> > It relies on the DT idle states infrastructure to initialize idle
> > states count and respective parameters. Current code assumes the driver
> > is managing idle states on all possible CPUs but can be easily
> > generalized to support heterogenous systems and build cpumasks at
> > runtime using MIDRs or DT cpu nodes compatible properties.
> >
> > The driver relies on the arm64 CPU operations to call the idle
> > initialization hook used to parse and save suspend back-end specific
> > idle states information upon probing.
> >
> > Idle state index 0 is always initialized as a simple wfi state, ie always
> > considered present and functional on all ARM64 platforms.
> >
> > Idle state indices higher than 0 trigger idle state entry by calling
> > the cpu_suspend function, that triggers the suspend operation through
> > the CPU operations suspend back-end hook. cpu_suspend passes the idle
> > state index as a parameter so that the CPU operations suspend back-end
> > can retrieve the required idle state data by using the idle state
> > index to execute a look-up on its internal data structures.
> >
> > Reviewed-by: Ashwin Chaugule <ashwin.chaugule@linaro.org>
> > Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
> > Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
>
> This patch should be ready to go too, is it ok if I split the series
> in arm64 arch specific patches (will ask Catalin to pull) and CPUidle ones
> (inclusive of DT bindings and !!this patch!!) and send two separate pull
> requests ?
If Daniel/Rafael don't have any objection, I can take the whole series
through the arm64 tree (it seems that patches have been already acked by
Daniel).
--
Catalin
next prev parent reply other threads:[~2014-09-04 16:03 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-01 15:28 [PATCH v8 0/8] ARM generic idle states Lorenzo Pieralisi
2014-09-01 15:28 ` Lorenzo Pieralisi
2014-09-01 15:28 ` [PATCH v8 1/8] arm64: kernel: refactor the CPU suspend API for retention states Lorenzo Pieralisi
2014-09-01 15:28 ` Lorenzo Pieralisi
[not found] ` <1409585324-3678-1-git-send-email-lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org>
2014-09-01 15:28 ` [PATCH v8 2/8] Documentation: arm: define DT idle states bindings Lorenzo Pieralisi
2014-09-01 15:28 ` Lorenzo Pieralisi
2014-09-01 15:28 ` [PATCH v8 3/8] drivers: cpuidle: implement DT based idle states infrastructure Lorenzo Pieralisi
2014-09-01 15:28 ` Lorenzo Pieralisi
2014-09-03 13:25 ` Daniel Lezcano
2014-09-03 13:25 ` Daniel Lezcano
2014-09-03 17:30 ` Lorenzo Pieralisi
2014-09-03 17:30 ` Lorenzo Pieralisi
2014-09-01 15:28 ` [PATCH v8 4/8] arm64: kernel: introduce cpu_init_idle CPU operation Lorenzo Pieralisi
2014-09-01 15:28 ` Lorenzo Pieralisi
2014-09-03 17:34 ` Lina Iyer
2014-09-03 17:34 ` Lina Iyer
2014-09-03 17:46 ` Lorenzo Pieralisi
2014-09-03 17:46 ` Lorenzo Pieralisi
2014-09-03 19:16 ` Lina Iyer
2014-09-03 19:16 ` Lina Iyer
2014-09-01 15:28 ` [PATCH v8 5/8] arm64: add PSCI CPU_SUSPEND based cpu_suspend support Lorenzo Pieralisi
2014-09-01 15:28 ` Lorenzo Pieralisi
2014-09-01 15:28 ` [PATCH v8 6/8] drivers: cpuidle: CPU idle ARM64 driver Lorenzo Pieralisi
2014-09-01 15:28 ` Lorenzo Pieralisi
2014-09-03 17:37 ` Lorenzo Pieralisi
2014-09-03 17:37 ` Lorenzo Pieralisi
2014-09-04 16:03 ` Catalin Marinas [this message]
2014-09-04 16:03 ` Catalin Marinas
2014-09-04 17:29 ` Lorenzo Pieralisi
2014-09-04 17:29 ` Lorenzo Pieralisi
2014-09-05 9:21 ` Will Deacon
2014-09-05 9:21 ` Will Deacon
2014-09-05 15:34 ` Lorenzo Pieralisi
2014-09-05 15:34 ` Lorenzo Pieralisi
2014-09-11 8:28 ` Daniel Lezcano
2014-09-11 8:28 ` Daniel Lezcano
2014-09-11 8:57 ` Lorenzo Pieralisi
2014-09-11 8:57 ` Lorenzo Pieralisi
[not found] ` <20140911085727.GA25773-7AyDDHkRsp3ZROr8t4l/smS4ubULX0JqMm0uRHvK7Nw@public.gmane.org>
2014-09-11 9:32 ` Daniel Lezcano
2014-09-11 9:32 ` Daniel Lezcano
2014-09-12 10:32 ` Catalin Marinas
2014-09-12 10:32 ` Catalin Marinas
2014-09-12 11:26 ` Lorenzo Pieralisi
2014-09-12 11:26 ` Lorenzo Pieralisi
2014-09-23 13:35 ` Bartlomiej Zolnierkiewicz
2014-09-23 13:35 ` Bartlomiej Zolnierkiewicz
2014-09-23 18:14 ` Lorenzo Pieralisi
2014-09-23 18:14 ` Lorenzo Pieralisi
2014-09-14 16:59 ` Tomasz Figa
2014-09-14 16:59 ` Tomasz Figa
2014-09-23 13:42 ` Bartlomiej Zolnierkiewicz
2014-09-23 13:42 ` Bartlomiej Zolnierkiewicz
2014-09-23 18:16 ` Lorenzo Pieralisi
2014-09-23 18:16 ` Lorenzo Pieralisi
2014-09-29 11:08 ` Lorenzo Pieralisi
2014-09-29 11:08 ` Lorenzo Pieralisi
2014-09-01 15:28 ` [PATCH v8 7/8] drivers: cpuidle: initialize big.LITTLE driver through DT Lorenzo Pieralisi
2014-09-01 15:28 ` Lorenzo Pieralisi
2014-09-03 13:29 ` Daniel Lezcano
2014-09-03 13:29 ` Daniel Lezcano
2014-09-01 15:28 ` [PATCH v8 8/8] drivers: cpuidle: initialize Exynos " Lorenzo Pieralisi
2014-09-01 15:28 ` Lorenzo Pieralisi
2014-09-03 13:32 ` Daniel Lezcano
2014-09-03 13:32 ` Daniel Lezcano
2014-09-03 17:29 ` Lorenzo Pieralisi
2014-09-03 17:29 ` Lorenzo Pieralisi
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