From: Sudeep Holla <sudeep.holla@arm.com>
To: Qing Wang <wangqing@vivo.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org,
Sudeep Holla <sudeep.holla@arm.com>,
linux-kernel@vger.kernel.org, vincent.guittot@linaro.org,
peterz@infradead.org, dietmar.eggemann@arm.com
Subject: Re: [PATCH V2] arm64: add SCHED_CLUSTER's dependency on ACPI
Date: Mon, 25 Apr 2022 11:06:35 +0100 [thread overview]
Message-ID: <20220425100635.ig4dxvlflglfagpx@bogus> (raw)
In-Reply-To: <1650855303-91388-1-git-send-email-wangqing@vivo.com>
On Sun, Apr 24, 2022 at 07:55:01PM -0700, Qing Wang wrote:
> From: Wang Qing <wangqing@vivo.com>
>
> cluster sched_domain configured by cpu_topology[].cluster_sibling,
> which is set by cluster_id, cluster_id can only get from ACPI.
>
> If the system does not enable ACPI, cluster_id is always -1, even enable
> SCHED_CLUSTER is invalid, this is misleading.
>
> So we add SCHED_CLUSTER's dependency on ACPI here.
>
Any reason why this can't be extended to support DT based systems via
cpu-map in the device tree. IMO we almost have everything w.r.t topology
in DT and no reason to deviate this feature between ACPI and DT.
--
Regards,
Sudeep
_______________________________________________
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:[~2022-04-25 10:07 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-25 2:55 [PATCH V2] arm64: add SCHED_CLUSTER's dependency on ACPI Qing Wang
2022-04-25 10:06 ` Sudeep Holla [this message]
2022-04-25 11:18 ` 王擎
2022-04-25 16:59 ` Sudeep Holla
2022-04-26 2:23 ` 王擎
2022-04-26 6:40 ` Sudeep Holla
2022-04-26 6:52 ` 王擎
2022-04-26 13:25 ` Sudeep Holla
2022-04-26 19:14 ` Dietmar Eggemann
2022-04-27 2:18 ` 王擎
2022-04-27 15:47 ` Dietmar Eggemann
2022-04-28 0:04 ` 王擎
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=20220425100635.ig4dxvlflglfagpx@bogus \
--to=sudeep.holla@arm.com \
--cc=catalin.marinas@arm.com \
--cc=dietmar.eggemann@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=peterz@infradead.org \
--cc=vincent.guittot@linaro.org \
--cc=wangqing@vivo.com \
--cc=will@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