linux-kernel - [PATCH 0/3] Add HRTICK support to Core Scheduling

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Message-ID: <20200827004250.4853-1-graf@amazon.com>
Date:   Thu, 27 Aug 2020 02:42:47 +0200
From:   Alexander Graf <graf@...zon.com>
To:     <linux-kernel@...r.kernel.org>
CC:     Vineeth Remanan Pillai <vpillai@...italocean.com>,
        Nishanth Aravamudan <naravamudan@...italocean.com>,
        Julien Desfossez <jdesfossez@...italocean.com>,
        Peter Zijlstra <peterz@...radead.org>,
        "Tim Chen" <tim.c.chen@...ux.intel.com>, <mingo@...nel.org>,
        <tglx@...utronix.de>, <pjt@...gle.com>,
        <torvalds@...ux-foundation.org>, <subhra.mazumdar@...cle.com>,
        <fweisbec@...il.com>, <keescook@...omium.org>,
        <kerrnel@...gle.com>, Phil Auld <pauld@...hat.com>,
        Aaron Lu <aaron.lwe@...il.com>,
        Aubrey Li <aubrey.intel@...il.com>,
        Valentin Schneider <valentin.schneider@....com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        "Pawan Gupta" <pawan.kumar.gupta@...ux.intel.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Joel Fernandes <joelaf@...gle.com>, <joel@...lfernandes.org>,
        <vineethrp@...il.com>, Chen Yu <yu.c.chen@...el.com>,
        Christian Brauner <christian.brauner@...ntu.com>
Subject: [PATCH 0/3] Add HRTICK support to Core Scheduling

CFS supports a feature called "HRTICK" which allows scheduling
decisions to be made independent of the HZ tick. That means that
we can achieve much more fine grained time slices and thus be
more fair in distributing time to different workloads.

Unfortunately, HRTICK currently does not work with the Core
Scheduling patch set. This patch set adds support for it.
Feel free to squash bits in where it makes sense.


Alex

Alexander Graf (3):
  sched: Allow hrticks to work with core scheduling
  sched: Trigger new hrtick if timer expires too fast
  sched: Use hrticks even with >sched_nr_latency tasks

 kernel/sched/core.c  | 13 +++++++++++++
 kernel/sched/fair.c  | 18 ++++++++++++++++--
 kernel/sched/sched.h |  4 ++++
 3 files changed, 33 insertions(+), 2 deletions(-)

-- 
2.26.2




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