From: Sudeep Holla <sudeep.holla@arm.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Sudeep Holla <sudeep.holla@arm.com>,
linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-ia64@vger.kernel.org, x86@kernel.org,
Al Stone <al.stone@linaro.org>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
Mahesh Sivasubramanian <msivasub@codeaurora.org>,
Ashwin Chaugule <ashwin.chaugule@linaro.org>,
Prashanth Prakash <pprakash@codeaurora.org>
Subject: Re: [PATCH v3 0/5] ACPI / processor_idle: Add ACPI v6.0 LPI support
Date: Wed, 17 Feb 2016 11:37:51 +0000 [thread overview]
Message-ID: <56C45B8F.4000509@arm.com> (raw)
In-Reply-To: <4399656.WBgE1pMnz5@vostro.rjw.lan>
On 16/02/16 20:08, Rafael J. Wysocki wrote:
> On Wednesday, December 02, 2015 02:10:41 PM Sudeep Holla wrote:
>> ACPI 6.0 introduced LPI(Low Power Idle) states that provides an alternate
>> method to describe processor idle states. It extends the specification
>> to allow the expression of idle states like C-states selectable by the
>> OSPM when a processor goes idle, but may affect more than one processor,
>> and may affect other system components.
>>
>> LPI extensions leverages the processor container device(again introduced
>> in ACPI 6.0) allowing to express which parts of the system are affected
>> by a given LPI state. It defines the local power states for each node
>> in a hierarchical processor topology. The OSPM can use _LPI object to
>> select a local power state for each level of processor hierarchy in the
>> system. They used to produce a composite power state request that is
>> presented to the platform by the OSPM.
>>
>> Since multiple processors affect the idle state for any non-leaf hierarchy
>> node, coordination of idle state requests between the processors is
>> required. ACPI supports two different coordination schemes: Platform
>> coordinated and OS initiated.
>>
>> This series aims at providing basic and initial support for platform
>> coordinated LPI states.
>>
>> v2[2]->v3:
>> - rebased against v4.4-rc3
>> - fixed couple of issues reported by Prashanth and review comments
>> from Ashwin
>>
>> v1[1]->v2[2]:
>> - Fixed support for ACPI0010 processor container
>> - moved sleep state code out of processor_idle
>>
>> Note the ARM64 specific changes are not part of this series as it's still
>> WIP and there are other consolidation happening in there. For reference
>> and testing, I have pushed a branch[3]
>
> Sorry for the slow response here.
>
No problem, I saw you were quite busy with cpufreq timers past couple of
weeks so didn't bother you.
> It doesn't look too bad overall, but there are some things in it I'd like to
> be done differenty. Please see comments on the individual patches.
>
OK, thanks for the review, will look at them.
--
Regards,
Sudeep
next prev parent reply other threads:[~2016-02-17 11:37 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-02 14:10 [PATCH v3 0/5] ACPI / processor_idle: Add ACPI v6.0 LPI support Sudeep Holla
2015-12-02 14:10 ` [PATCH v3 1/5] ACPI / processor : add support for ACPI0010 processor container Sudeep Holla
2016-02-16 20:10 ` Rafael J. Wysocki
2016-02-17 11:54 ` Sudeep Holla
2016-02-17 11:54 ` [UPDATE] " Sudeep Holla
2016-02-23 23:41 ` Rafael J. Wysocki
2015-12-02 14:10 ` [PATCH v3 2/5] ACPI / sleep: move acpi_processor_sleep to sleep.c Sudeep Holla
2016-02-16 20:13 ` Rafael J. Wysocki
2016-02-17 12:03 ` Sudeep Holla
2016-02-17 12:03 ` [UPDATE] " Sudeep Holla
2016-02-23 23:42 ` Rafael J. Wysocki
2015-12-02 14:10 ` [PATCH v3 3/5] ACPI / processor_idle: replace PREFIX with pr_fmt Sudeep Holla
2016-02-16 20:15 ` Rafael J. Wysocki
2015-12-02 14:10 ` [PATCH v3 4/5] ACPI / processor_idle : introduce ARCH_SUPPORTS_ACPI_PROCESSOR_CSTATE Sudeep Holla
2016-02-16 20:18 ` Rafael J. Wysocki
2016-02-17 12:21 ` Sudeep Holla
2016-02-22 13:46 ` Sudeep Holla
2016-02-22 23:28 ` Rafael J. Wysocki
2016-02-23 9:32 ` Sudeep Holla
2015-12-02 14:10 ` [PATCH v3 5/5] ACPI / processor_idle: Add support for Low Power Idle(LPI) states Sudeep Holla
2016-02-16 20:46 ` Rafael J. Wysocki
2016-02-17 16:10 ` Sudeep Holla
2016-04-12 4:06 ` Vikas Sajjan
2016-04-12 14:29 ` Sudeep Holla
2015-12-09 22:52 ` [PATCH v3 0/5] ACPI / processor_idle: Add ACPI v6.0 LPI support Prakash, Prashanth
2015-12-10 8:48 ` Sudeep Holla
2016-01-15 19:13 ` Prakash, Prashanth
2016-01-18 12:15 ` Sudeep Holla
2016-01-18 14:53 ` Rafael J. Wysocki
2016-01-27 18:26 ` Sudeep Holla
2016-02-16 20:08 ` Rafael J. Wysocki
2016-02-17 11:37 ` Sudeep Holla [this message]
2016-02-18 2:08 ` Rafael J. Wysocki
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=56C45B8F.4000509@arm.com \
--to=sudeep.holla@arm.com \
--cc=Lorenzo.Pieralisi@arm.com \
--cc=al.stone@linaro.org \
--cc=ashwin.chaugule@linaro.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-ia64@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=msivasub@codeaurora.org \
--cc=pprakash@codeaurora.org \
--cc=rjw@rjwysocki.net \
--cc=x86@kernel.org \
/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: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).