From: Gautham R Shenoy <ego@linux.vnet.ibm.com>
To: "Shreyas B. Prabhu" <shreyas@linux.vnet.ibm.com>
Cc: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org,
paulus@ozlabs.org, linux-kernel@vger.kernel.org,
mikey@neuling.org, ego@linux.vnet.ibm.com,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
linux-pm@vger.kernel.org
Subject: Re: [PATCH v3 8/9] cpuidle/powernv: Add support for POWER ISA v3 idle states
Date: Tue, 24 May 2016 16:07:51 +0530 [thread overview]
Message-ID: <20160524103751.GF12860@in.ibm.com> (raw)
In-Reply-To: <1464016722-7488-9-git-send-email-shreyas@linux.vnet.ibm.com>
On Mon, May 23, 2016 at 08:48:41PM +0530, Shreyas B. Prabhu wrote:
> POWER ISA v3 defines a new idle processor core mechanism. In summary,
> a) new instruction named stop is added.
> b) new per thread SPR named PSSCR is added which controls the behavior
> of stop instruction.
>
> Supported idle states and value to be written to PSSCR register to enter
> any idle state is exposed via ibm,cpu-idle-state-names and
> ibm,cpu-idle-state-psscr respectively. To enter an idle state,
> platform provided power_stop() needs to be invoked with the appropriate
> PSSCR value.
>
> This patch adds support for this new mechanism in cpuidle powernv driver.
>
> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
> Cc: linux-pm@vger.kernel.org
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Paul Mackerras <paulus@ozlabs.org>
> Cc: linuxppc-dev@lists.ozlabs.org
> Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com>
Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
--
Thanks and Regards
gautham.
next prev parent reply other threads:[~2016-05-24 10:38 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-23 15:18 [PATCH v3 0/9] powerpc/powernv/cpuidle: Add support for POWER ISA v3 idle states Shreyas B. Prabhu
2016-05-23 15:18 ` [PATCH v3 1/9] powerpc/kvm: make hypervisor state restore a function Shreyas B. Prabhu
2016-05-23 15:18 ` [PATCH v3 2/9] powerpc/powernv: Rename idle_power7.S to idle_power_common.S Shreyas B. Prabhu
2016-05-24 8:27 ` Gautham R Shenoy
2016-05-23 15:18 ` [PATCH v3 3/9] powerpc/powernv: Rename reusable idle functions to hardware agnostic names Shreyas B. Prabhu
2016-05-24 8:30 ` Gautham R Shenoy
2016-05-23 15:18 ` [PATCH v3 4/9] powerpc/powernv: Make power7_powersave_common more generic Shreyas B. Prabhu
2016-05-24 8:54 ` Gautham R Shenoy
2016-05-23 15:18 ` [PATCH v3 5/9] powerpc/powernv: abstraction for saving SPRs before entering deep idle states Shreyas B. Prabhu
2016-05-24 8:55 ` Gautham R Shenoy
2016-05-23 15:18 ` [PATCH v3 6/9] powerpc/powernv: set power_save func after the idle states are initialized Shreyas B. Prabhu
2016-05-23 15:18 ` [PATCH v3 7/9] powerpc/powernv: Add platform support for stop instruction Shreyas B. Prabhu
2016-05-24 8:47 ` Madhavan Srinivasan
2016-05-24 10:24 ` Gautham R Shenoy
2016-05-25 2:16 ` Shreyas B Prabhu
[not found] ` <886163be-b915-b60f-b25b-bf770f3ed821@linux.vnet.ibm.com>
2016-05-25 2:12 ` Shreyas B Prabhu
2016-05-23 15:18 ` [PATCH v3 8/9] cpuidle/powernv: Add support for POWER ISA v3 idle states Shreyas B. Prabhu
2016-05-24 10:37 ` Gautham R Shenoy [this message]
2016-05-23 15:18 ` [PATCH v3 9/9] powerpc/powernv: Use deepest stop state when cpu is offlined Shreyas B. Prabhu
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