Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   <cl@rock-chips.com>
To:     heiko@sntech.de
Cc:     mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com,
        vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
        rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
        akpm@linux-foundation.org, tglx@linutronix.de, mpe@ellerman.id.au,
        surenb@google.com, ben.dooks@codethink.co.uk,
        anshuman.khandual@arm.com, catalin.marinas@arm.com,
        will@kernel.org, keescook@chromium.org, luto@amacapital.net,
        wad@chromium.org, mark.rutland@arm.com, geert+renesas@glider.be,
        george_davis@mentor.com, sudeep.holla@arm.com,
        linux@armlinux.org.uk, gregkh@linuxfoundation.org, info@metux.net,
        kstewart@linuxfoundation.org, allison@lohutok.net,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        huangtao@rock-chips.com, Liang Chen <cl@rock-chips.com>
Subject: [PATCH v2 0/1] wait_task_inactive() spend too much time on system startup
Date:   Thu,  5 Mar 2020 17:59:47 +0800
Message-Id: <20200305095948.10873-1-cl@rock-chips.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

From: Liang Chen <cl@rock-chips.com>

Changelog:
v1: wait_task_inactive() frequently call schedule_hrtimeout() and spend a lot of time,
i am trying to optimize it on rockchip platform.
v2: Use atomic_flags(PFA) instead of TIF flag, and add some comments.

Liang Chen (1):
  sched/fair: do not preempt current task if it is going to call
    schedule()

 include/linux/sched.h |  5 +++++
 kernel/kthread.c      |  4 ++++
 kernel/sched/fair.c   | 13 +++++++++++++
 3 files changed, 22 insertions(+)

-- 
2.17.1