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[94.21.131.96]) by smtp.gmail.com with ESMTPSA id x2sm612347edv.61.2021.06.28.00.00.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Jun 2021 00:00:17 -0700 (PDT) Sender: Ingo Molnar Date: Mon, 28 Jun 2021 09:00:15 +0200 From: Ingo Molnar To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, Thomas Gleixner , =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker , Peter Zijlstra , Andrew Morton Subject: [GIT PULL] timers/nohz updates for v5.14 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus, Please pull the latest timers/nohz git tree from: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-nohz-2021-06-28 # HEAD: 09fe880ed7a160ebbffb84a0a9096a075e314d2f MAINTAINERS: Add myself as context tracking maintainer Updates to the tick/nohz code in this cycle: - Micro-optimize tick_nohz_full_cpu() - Optimize idle exit tick restarts to be less eager - Optimize tick_nohz_dep_set_task() to only wake up a single CPU. This reduces IPIs and interruptions on nohz_full CPUs. - Optimize tick_nohz_dep_set_signal() in a similar fashion. - Skip IPIs in tick_nohz_kick_task() when trying to kick a non-running task. - Micro-optimize tick_nohz_task_switch() IRQ flags handling to reduce context switching costs. - Misc cleanups and fixes Thanks, Ingo ------------------> Frederic Weisbecker (4): tick/nohz: Remove superflous check for CONFIG_VIRT_CPU_ACCOUNTING_NATIVE tick/nohz: Update nohz_full Kconfig help tick/nohz: Only wake up a single target cpu when kicking a task MAINTAINERS: Add myself as context tracking maintainer Marcelo Tosatti (2): tick/nohz: Change signal tick dependency to wake up CPUs of member tasks tick/nohz: Kick only _queued_ task whose tick dependency is updated Peter Zijlstra (2): tick/nohz: Evaluate the CPU expression after the static key tick/nohz: Call tick_nohz_task_switch() with interrupts disabled Yunfeng Ye (2): tick/nohz: Conditionally restart tick on idle exit tick/nohz: Update idle_exittime on actual idle exit MAINTAINERS | 6 ++ include/linux/sched.h | 2 + include/linux/tick.h | 26 +++++---- kernel/sched/core.c | 7 ++- kernel/time/Kconfig | 11 ++-- kernel/time/posix-cpu-timers.c | 4 +- kernel/time/tick-sched.c | 129 ++++++++++++++++++++++++++++------------- 7 files changed, 125 insertions(+), 60 deletions(-)