linux-kernel - [PATCH 0/2] vtime: Remove pair of seqcount on context switch

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Message-Id: <20191003161745.28464-1-frederic@kernel.org>
Date:   Thu,  3 Oct 2019 18:17:43 +0200
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Frederic Weisbecker <frederic@...nel.org>,
        Wanpeng Li <wanpengli@...cent.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Yauheni Kaliuta <yauheni.kaliuta@...hat.com>,
        Rik van Riel <riel@...hat.com>
Subject: [PATCH 0/2] vtime: Remove pair of seqcount on context switch

Extracted from a larger queue that fixes kcpustat on nohz_full, these
two patches have value on their own as they remove two write barriers
on nohz_full context switch.

Frederic Weisbecker (2):
  vtime: Rename vtime_account_system() to vtime_account_kernel()
  vtime: Spare a seqcount lock/unlock cycle on context switch

 arch/ia64/kernel/time.c          |  4 +--
 arch/powerpc/kernel/time.c       |  6 ++--
 arch/s390/kernel/vtime.c         |  4 +--
 include/linux/context_tracking.h |  4 +--
 include/linux/vtime.h            | 38 ++++++++++++------------
 kernel/sched/cputime.c           | 50 ++++++++++++++++++--------------
 6 files changed, 57 insertions(+), 49 deletions(-)

-- 
2.23.0