From: Valentin Schneider <valentin.schneider@arm.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: morten.rasmussen@arm.com, vincent.guittot@linaro.org,
Quentin Perret <qperret@google.com>,
peterz@infradead.org, linux-kernel@vger.kernel.org,
Russell King <linux@armlinux.org.uk>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v5 02/17] ARM: Revert back to default scheduler topology.
Date: Thu, 13 Aug 2020 23:27:05 +0100 [thread overview]
Message-ID: <jhjzh6ydvwm.mognet@arm.com> (raw)
In-Reply-To: <20200813191614.GB2337490@gmail.com>
On 13/08/20 20:16, Ingo Molnar wrote:
> * Valentin Schneider <valentin.schneider@arm.com> wrote:
>
>> The ARM-specific GMC level is meant to be built using the thread sibling
>> mask, but no devicetree in arch/arm/boot/dts uses the 'thread' cpu-map
>> binding. With SD_SHARE_POWERDOMAIN gone, this topology level can be
>> removed, at which point ARM no longer benefits from having a custom defined
>> topology table.
>>
>> Delete the GMC topology level by making ARM use the default scheduler
>> topology table. This essentially reverts commit
>>
>> fb2aa85564f4 ("sched, ARM: Create a dedicated scheduler topology table")
>>
>> Cc: Russell King <linux@armlinux.org.uk>
>> Suggested-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
>> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
>> Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
>
> Minor changelog nit, it's helpful to add this final sentence:
>
> No change in functionality is expected.
>
> ( If indeed no change in functionality is expected. ;-)
>
Right, that's indeed the case here given the GMC domain would always be
degenerated anyway.
> Thanks,
>
> Ingo
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-08-13 22:28 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-12 12:52 [PATCH v5 00/17] sched: Instrument sched domain flags Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 01/17] ARM, sched/topology: Remove SD_SHARE_POWERDOMAIN Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 02/17] ARM: Revert back to default scheduler topology Valentin Schneider
2020-08-13 19:16 ` Ingo Molnar
2020-08-13 22:27 ` Valentin Schneider [this message]
2020-08-12 12:52 ` [PATCH v5 03/17] sched/topology: Split out SD_* flags declaration to its own file Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 04/17] sched/topology: Define and assign sched_domain flag metadata Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 05/17] sched/topology: Verify SD_* flags setup when sched_debug is on Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 06/17] sched/debug: Output SD flag names rather than their values Valentin Schneider
2020-08-12 16:35 ` kernel test robot
2020-08-12 18:51 ` Valentin Schneider
2020-08-13 12:02 ` Luc Van Oostenryck
2020-08-13 13:13 ` Valentin Schneider
2020-08-12 17:59 ` kernel test robot
2020-08-12 17:59 ` [PATCH] sched/debug: fix noderef.cocci warnings kernel test robot
2020-08-12 18:52 ` Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 07/17] sched/topology: Introduce SD metaflag for flags needing > 1 groups Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 08/17] sched/topology: Use prebuilt SD flag degeneration mask Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 09/17] sched/topology: Remove SD_SERIALIZE degeneration special case Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 10/17] sched/topology: Propagate SD_ASYM_CPUCAPACITY upwards Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 11/17] sched/topology: Mark SD_PREFER_SIBLING as SDF_NEEDS_GROUPS Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 12/17] sched/topology: Mark SD_BALANCE_WAKE " Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 13/17] sched/topology: Mark SD_SERIALIZE " Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 14/17] sched/topology: Mark SD_ASYM_PACKING " Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 15/17] sched/topology: Mark SD_OVERLAP " Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 16/17] sched/topology: Mark SD_NUMA " Valentin Schneider
2020-08-12 12:53 ` [PATCH v5 17/17] sched/topology: Expand use of SD_DEGENERATE_GROUPS_MASK to flags not needing groups Valentin Schneider
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=jhjzh6ydvwm.mognet@arm.com \
--to=valentin.schneider@arm.com \
--cc=dietmar.eggemann@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=mingo@kernel.org \
--cc=morten.rasmussen@arm.com \
--cc=peterz@infradead.org \
--cc=qperret@google.com \
--cc=vincent.guittot@linaro.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).