From: <cl@rock-chips•com>
To: heiko@sntech•de
Cc: juri.lelli@redhat•com, mark.rutland@arm•com,
geert+renesas@glider•be, peterz@infradead•org,
catalin.marinas@arm•com, bsegall@google•com, will@kernel•org,
mpe@ellerman•id.au, linux@armlinux•org.uk,
dietmar.eggemann@arm•com, ben.dooks@codethink•co.uk,
mgorman@suse•de, Liang Chen <cl@rock-chips•com>,
huangtao@rock-chips•com, keescook@chromium•org,
anshuman.khandual@arm•com, rostedt@goodmis•org,
tglx@linutronix•de, surenb@google•com, mingo@redhat•com,
allison@lohutok•net, linux-arm-kernel@lists•infradead.org,
wad@chromium•org, gregkh@linuxfoundation•org,
linux-kernel@vger•kernel.org, luto@amacapital•net,
george_davis@mentor•com, sudeep.holla@arm•com,
akpm@linux-foundation•org, info@metux•net,
kstewart@linuxfoundation•org
Subject: [PATCH v2 0/1] wait_task_inactive() spend too much time on system startup
Date: Thu, 5 Mar 2020 17:59:47 +0800 [thread overview]
Message-ID: <20200305095948.10873-1-cl@rock-chips.com> (raw)
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
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next reply other threads:[~2020-03-05 10:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-05 9:59 cl [this message]
2020-03-05 9:59 ` [PATCH v2 1/1] sched/fair: do not preempt current task if it is going to call schedule() cl
2020-03-05 17:24 ` Kees Cook
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