linux-doc.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Beata Michalska <beata.michalska@arm.com>
To: linux-kernel@vger.kernel.org
Cc: peterz@infradead.org, mingo@redhat.com, juri.lelli@redhat.com,
	vincent.guittot@linaro.org, valentin.schneider@arm.com,
	dietmar.eggemann@arm.com, corbet@lwn.net, rdunlap@infradead.org,
	linux-doc@vger.kernel.org
Subject: [PATCH v3 3/3] sched/doc: Update the CPU capacity asymmetry bits
Date: Mon, 10 May 2021 17:30:58 +0100	[thread overview]
Message-ID: <1620664258-11045-4-git-send-email-beata.michalska@arm.com> (raw)
In-Reply-To: <1620664258-11045-1-git-send-email-beata.michalska@arm.com>

Update the documentation bits referring to capacity aware scheduling
with regards to newly introduced SD_ASYM_CPUCAPACITY_FULL sched_domain
flag.

Signed-off-by: Beata Michalska <beata.michalska@arm.com>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
---
 Documentation/scheduler/sched-capacity.rst | 6 ++++--
 Documentation/scheduler/sched-energy.rst   | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/Documentation/scheduler/sched-capacity.rst b/Documentation/scheduler/sched-capacity.rst
index 9b7cbe4..805f85f 100644
--- a/Documentation/scheduler/sched-capacity.rst
+++ b/Documentation/scheduler/sched-capacity.rst
@@ -284,8 +284,10 @@ whether the system exhibits asymmetric CPU capacities. Should that be the
 case:
 
 - The sched_asym_cpucapacity static key will be enabled.
-- The SD_ASYM_CPUCAPACITY flag will be set at the lowest sched_domain level that
-  spans all unique CPU capacity values.
+- The SD_ASYM_CPUCAPACITY_FULL flag will be set at the lowest sched_domain
+  level that spans all unique CPU capacity values.
+- The SD_ASYM_CPUCAPACITY flag will be set for any sched_domain that spans
+  CPUs with any range of asymmetry.
 
 The sched_asym_cpucapacity static key is intended to guard sections of code that
 cater to asymmetric CPU capacity systems. Do note however that said key is
diff --git a/Documentation/scheduler/sched-energy.rst b/Documentation/scheduler/sched-energy.rst
index afe02d3..8fbce5e 100644
--- a/Documentation/scheduler/sched-energy.rst
+++ b/Documentation/scheduler/sched-energy.rst
@@ -328,7 +328,7 @@ section lists these dependencies and provides hints as to how they can be met.
 
 As mentioned in the introduction, EAS is only supported on platforms with
 asymmetric CPU topologies for now. This requirement is checked at run-time by
-looking for the presence of the SD_ASYM_CPUCAPACITY flag when the scheduling
+looking for the presence of the SD_ASYM_CPUCAPACITY_FULL flag when the scheduling
 domains are built.
 
 See Documentation/scheduler/sched-capacity.rst for requirements to be met for this
-- 
2.7.4


      parent reply	other threads:[~2021-05-10 16:31 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-10 16:30 [PATCH v3 0/3] Rework CPU capacity asymmetry detection Beata Michalska
2021-05-10 16:30 ` [PATCH v3 1/3] sched/core: Introduce SD_ASYM_CPUCAPACITY_FULL sched_domain flag Beata Michalska
2021-05-10 16:30 ` [PATCH v3 2/3] sched/topology: Rework CPU capacity asymmetry detection Beata Michalska
2021-05-13 11:05   ` Peter Zijlstra
2021-05-13 13:48     ` Beata Michalska
2021-05-13 13:59       ` Peter Zijlstra
2021-05-13 14:01         ` Beata Michalska
2021-05-10 16:30 ` Beata Michalska [this message]

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=1620664258-11045-4-git-send-email-beata.michalska@arm.com \
    --to=beata.michalska@arm.com \
    --cc=corbet@lwn.net \
    --cc=dietmar.eggemann@arm.com \
    --cc=juri.lelli@redhat.com \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=peterz@infradead.org \
    --cc=rdunlap@infradead.org \
    --cc=valentin.schneider@arm.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).