From: Frederic Weisbecker <frederic@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Frederic Weisbecker <frederic@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Chris Metcalf <cmetcalf@mellanox.com>,
Thomas Gleixner <tglx@linutronix.de>,
Luiz Capitulino <lcapitulino@redhat.com>,
Christoph Lameter <cl@linux.com>,
"Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
Mike Galbraith <efault@gmx.de>, Rik van Riel <riel@redhat.com>,
Wanpeng Li <kernellwp@gmail.com>
Subject: [GIT PULL] Introduce housekeeping subsystem v5
Date: Tue, 24 Oct 2017 15:06:49 +0200 [thread overview]
Message-ID: <1508850421-10058-1-git-send-email-frederic@kernel.org> (raw)
(No significant change since v4, only a rebase against -rc6)
Ingo,
Please pull the core/isolation-v5 branch that can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
core/isolation-v5
HEAD: 64b71f4e9bffef1d7c9ffd2fae9b688be6da95b5
Summary of changes:
* Move the housekeeping code that was tied to NO_HZ to its own subsystem.
Currently NO_HZ governs the other isolation features which is not right
as dynticks is just an isolation feature like the others. We want to
centralize the CPU isolation decisions to a subsystem of its own instead.
* Integrate isolcpus code to housekeeping and treat it as a CPU isolation
feature.
* Reuse the "isolcpus=" kernel parameter to control the CPU isolation.
For now only tick and domains can be isolated after this patchset:
isolcpus=1-7 # isolate domains on CPU range 1 to 7
# "domain" flag is implicit by default to
# keep the current behaviour
isolcpus=domain,1-7 # do the same
isolcpus=nohz,1-7 # apply nohz_full to CPU range 1 to 7
isolcpus=nohz,domain,1-7 # apply nohz_full and isolate domains of
# CPU range 1 to 7
Thanks,
Frederic
---
Frederic Weisbecker (12):
housekeeping: Move housekeeping related code to its own file
watchdog: Use housekeeping_cpumask() instead of ad-hoc version
housekeeping: Provide a dynamic off-case to housekeeping_any_cpu()
housekeeping: Make housekeeping cpumask private
housekeeping: Use its own static key
housekeeping: Rename is_housekeeping_cpu to housekeeping_cpu
housekeeping: Move it under its own config, independant from NO_HZ
housekeeping: Introduce housekeeping flags
housekeeping: Handle nohz_full= parameter
housekeeping: Move isolcpus to housekeeping
housekeeping: Add basic isolcpus flags
housekeeping: Document isolcpus flags
Documentation/admin-guide/kernel-parameters.txt | 33 +++---
drivers/base/cpu.c | 11 +-
drivers/net/ethernet/tile/tilegx.c | 6 +-
include/linux/housekeeping.h | 51 ++++++++
include/linux/sched.h | 2 -
include/linux/tick.h | 39 +------
init/Kconfig | 7 ++
init/main.c | 2 +
kernel/Makefile | 1 +
kernel/cgroup/cpuset.c | 15 +--
kernel/housekeeping.c | 149 ++++++++++++++++++++++++
kernel/rcu/tree_plugin.h | 3 +-
kernel/rcu/update.c | 3 +-
kernel/sched/core.c | 25 +---
kernel/sched/fair.c | 3 +-
kernel/sched/topology.c | 24 +---
kernel/time/tick-sched.c | 31 +----
kernel/watchdog.c | 13 +--
18 files changed, 276 insertions(+), 142 deletions(-)
next reply other threads:[~2017-10-24 13:37 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-24 13:06 Frederic Weisbecker [this message]
2017-10-24 13:06 ` [PATCH 01/12] housekeeping: Move housekeeping related code to its own file Frederic Weisbecker
2017-10-24 13:35 ` Paul E. McKenney
2017-10-24 14:49 ` [tip:sched/core] " tip-bot for Frederic Weisbecker
2017-10-24 13:06 ` [PATCH 02/12] watchdog: Use housekeeping_cpumask() instead of ad-hoc version Frederic Weisbecker
2017-10-24 14:49 ` [tip:sched/core] " tip-bot for Frederic Weisbecker
2017-10-24 13:06 ` [PATCH 03/12] housekeeping: Provide a dynamic off-case to housekeeping_any_cpu() Frederic Weisbecker
2017-10-24 14:50 ` [tip:sched/core] " tip-bot for Frederic Weisbecker
2017-10-24 13:06 ` [PATCH 04/12] housekeeping: Make housekeeping cpumask private Frederic Weisbecker
2017-10-24 14:50 ` [tip:sched/core] " tip-bot for Frederic Weisbecker
2017-10-24 13:06 ` [PATCH 05/12] housekeeping: Use its own static key Frederic Weisbecker
2017-10-24 14:50 ` [tip:sched/core] " tip-bot for Frederic Weisbecker
2017-10-24 13:06 ` [PATCH 06/12] housekeeping: Rename is_housekeeping_cpu to housekeeping_cpu Frederic Weisbecker
2017-10-24 14:51 ` [tip:sched/core] " tip-bot for Frederic Weisbecker
2017-10-24 13:06 ` [PATCH 07/12] housekeeping: Move it under its own config, independant from NO_HZ Frederic Weisbecker
2017-10-24 14:51 ` [tip:sched/core] housekeeping: Move it under its own config, independent " tip-bot for Frederic Weisbecker
2017-10-24 13:06 ` [PATCH 08/12] housekeeping: Introduce housekeeping flags Frederic Weisbecker
2017-10-24 14:52 ` [tip:sched/core] " tip-bot for Frederic Weisbecker
2017-10-24 13:06 ` [PATCH 09/12] housekeeping: Handle nohz_full= parameter Frederic Weisbecker
2017-10-24 14:52 ` [tip:sched/core] housekeeping: Handle the " tip-bot for Frederic Weisbecker
2017-10-24 13:06 ` [PATCH 10/12] housekeeping: Move isolcpus to housekeeping Frederic Weisbecker
2017-10-24 13:07 ` [PATCH 11/12] housekeeping: Add basic isolcpus flags Frederic Weisbecker
2017-10-24 13:07 ` [PATCH 12/12] housekeeping: Document " Frederic Weisbecker
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