From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org,
Will Deacon <will.deacon@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Jisheng Zhang <jszhang@marvell.com>
Subject: Re: [PATCH v3 2/2] ARM64: kernel: PSCI: move PSCI idle management code to drivers/firmware
Date: Wed, 6 Jan 2016 21:44:39 +0000 [thread overview]
Message-ID: <20160106214439.GB19062@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20160106165545.GA19886@red-moon>
On Wed, Jan 06, 2016 at 04:55:45PM +0000, Lorenzo Pieralisi wrote:
> On Tue, Jan 05, 2016 at 01:34:47PM +0000, Russell King - ARM Linux wrote:
> > That immediately worries me, because it bypasses the CPU dependencies
> > for ARM_CPU_SUSPEND implicitly applied via ARCH_SUSPEND_POSSIBLE. I'd
> > prefer instead:
> >
> > config ARM_PSCI_CPU_IDLE
> > def_bool ARM_PSCI_FW && CPU_IDLE && (!ARM || ARM_CPU_SUSPEND)
>
> If you are not against it, I could make ARM_PSCI select ARM_CPU_SUSPEND,
> the CPU dependency would be taken into account (ie CPU_V7) and this
> would mirror what's done for the eg BL_SWITCHER.
If you're proposing to always build the code in psci.c when ARM_PSCI_FW
is enabled, I'd rather do this:
config ARM_CPU_SUSPEND
def_bool PM_SLEEP || BL_SWITCHER || ARM_PSCI_FW
depends on ARCH_SUSPEND_POSSIBLE
rather than have stuff select this option.
--
RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
WARNING: multiple messages have this Message-ID (diff)
From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 2/2] ARM64: kernel: PSCI: move PSCI idle management code to drivers/firmware
Date: Wed, 6 Jan 2016 21:44:39 +0000 [thread overview]
Message-ID: <20160106214439.GB19062@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20160106165545.GA19886@red-moon>
On Wed, Jan 06, 2016 at 04:55:45PM +0000, Lorenzo Pieralisi wrote:
> On Tue, Jan 05, 2016 at 01:34:47PM +0000, Russell King - ARM Linux wrote:
> > That immediately worries me, because it bypasses the CPU dependencies
> > for ARM_CPU_SUSPEND implicitly applied via ARCH_SUSPEND_POSSIBLE. I'd
> > prefer instead:
> >
> > config ARM_PSCI_CPU_IDLE
> > def_bool ARM_PSCI_FW && CPU_IDLE && (!ARM || ARM_CPU_SUSPEND)
>
> If you are not against it, I could make ARM_PSCI select ARM_CPU_SUSPEND,
> the CPU dependency would be taken into account (ie CPU_V7) and this
> would mirror what's done for the eg BL_SWITCHER.
If you're proposing to always build the code in psci.c when ARM_PSCI_FW
is enabled, I'd rather do this:
config ARM_CPU_SUSPEND
def_bool PM_SLEEP || BL_SWITCHER || ARM_PSCI_FW
depends on ARCH_SUSPEND_POSSIBLE
rather than have stuff select this option.
--
RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
next prev parent reply other threads:[~2016-01-06 21:44 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-16 16:02 [PATCH v3 0/2] Enabling PSCI based idle on ARM 32-bit platforms Lorenzo Pieralisi
2015-10-16 16:02 ` Lorenzo Pieralisi
2015-10-16 16:02 ` [PATCH v3 1/2] ARM: cpuidle: remove cpu parameter from the cpuidle_ops suspend hook Lorenzo Pieralisi
2015-10-16 16:02 ` Lorenzo Pieralisi
2015-12-16 20:58 ` Daniel Lezcano
2015-12-16 20:58 ` Daniel Lezcano
2015-10-16 16:02 ` [PATCH v3 2/2] ARM64: kernel: PSCI: move PSCI idle management code to drivers/firmware Lorenzo Pieralisi
2015-10-16 16:02 ` Lorenzo Pieralisi
2015-12-16 20:57 ` Daniel Lezcano
2015-12-16 20:57 ` Daniel Lezcano
2016-01-05 10:59 ` Russell King - ARM Linux
2016-01-05 10:59 ` Russell King - ARM Linux
2016-01-05 12:31 ` Lorenzo Pieralisi
2016-01-05 12:31 ` Lorenzo Pieralisi
2016-01-05 12:51 ` Russell King - ARM Linux
2016-01-05 12:51 ` Russell King - ARM Linux
2016-01-05 13:27 ` Lorenzo Pieralisi
2016-01-05 13:27 ` Lorenzo Pieralisi
2016-01-05 13:34 ` Russell King - ARM Linux
2016-01-05 13:34 ` Russell King - ARM Linux
2016-01-05 15:28 ` Lorenzo Pieralisi
2016-01-05 15:28 ` Lorenzo Pieralisi
2016-01-06 16:55 ` Lorenzo Pieralisi
2016-01-06 16:55 ` Lorenzo Pieralisi
2016-01-06 21:44 ` Russell King - ARM Linux [this message]
2016-01-06 21:44 ` Russell King - ARM Linux
2016-01-07 9:46 ` Lorenzo Pieralisi
2016-01-07 9:46 ` Lorenzo Pieralisi
2016-01-25 12:17 [PATCH v3 0/2] Enabling PSCI based idle on ARM 32-bit platforms Lorenzo Pieralisi
2016-01-25 12:17 ` [PATCH v3 2/2] ARM64: kernel: PSCI: move PSCI idle management code to drivers/firmware Lorenzo Pieralisi
2016-01-25 12:17 ` Lorenzo Pieralisi
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