From: tip-bot for Sebastian Andrzej Siewior <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: bigeasy@linutronix.de, mingo@kernel.org, tj@kernel.org,
hpa@zytor.com, linux-kernel@vger.kernel.org, tglx@linutronix.de,
axboe@fb.com, peterz@infradead.org
Subject: [tip:smp/hotplug] mm/writeback: Convert to hotplug state machine
Date: Tue, 6 Sep 2016 09:39:27 -0700 [thread overview]
Message-ID: <tip-1d7ac6aec947d222042b6d22b3cec109db4fd19e@git.kernel.org> (raw)
In-Reply-To: <20160818125731.27256-6-bigeasy@linutronix.de>
Commit-ID: 1d7ac6aec947d222042b6d22b3cec109db4fd19e
Gitweb: http://git.kernel.org/tip/1d7ac6aec947d222042b6d22b3cec109db4fd19e
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
AuthorDate: Thu, 18 Aug 2016 14:57:20 +0200
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Tue, 6 Sep 2016 18:30:20 +0200
mm/writeback: Convert to hotplug state machine
Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jens Axboe <axboe@fb.com>
Cc: linux-mm@kvack.org
Cc: rt@linutronix.de
Cc: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/20160818125731.27256-6-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/cpuhotplug.h | 1 +
mm/page-writeback.c | 26 +++++++-------------------
2 files changed, 8 insertions(+), 19 deletions(-)
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index 82ee321..854e59a 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -16,6 +16,7 @@ enum cpuhp_state {
CPUHP_X86_APB_DEAD,
CPUHP_VIRT_NET_DEAD,
CPUHP_SLUB_DEAD,
+ CPUHP_MM_WRITEBACK_DEAD,
CPUHP_WORKQUEUE_PREP,
CPUHP_POWER_NUMA_PREPARE,
CPUHP_HRTIMERS_PREPARE,
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index f4cd7d8..28d6f36 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -2080,26 +2080,12 @@ void writeback_set_ratelimit(void)
ratelimit_pages = 16;
}
-static int
-ratelimit_handler(struct notifier_block *self, unsigned long action,
- void *hcpu)
+static int page_writeback_cpu_online(unsigned int cpu)
{
-
- switch (action & ~CPU_TASKS_FROZEN) {
- case CPU_ONLINE:
- case CPU_DEAD:
- writeback_set_ratelimit();
- return NOTIFY_OK;
- default:
- return NOTIFY_DONE;
- }
+ writeback_set_ratelimit();
+ return 0;
}
-static struct notifier_block ratelimit_nb = {
- .notifier_call = ratelimit_handler,
- .next = NULL,
-};
-
/*
* Called early on to tune the page writeback dirty limits.
*
@@ -2122,8 +2108,10 @@ void __init page_writeback_init(void)
{
BUG_ON(wb_domain_init(&global_wb_domain, GFP_KERNEL));
- writeback_set_ratelimit();
- register_cpu_notifier(&ratelimit_nb);
+ cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "mm/writeback:online",
+ page_writeback_cpu_online, NULL);
+ cpuhp_setup_state(CPUHP_MM_WRITEBACK_DEAD, "mm/writeback:dead", NULL,
+ page_writeback_cpu_online);
}
/**
next prev parent reply other threads:[~2016-09-06 16:40 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-18 12:57 cpu hotplug: convert more drivers Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 01/16] cpuhotplug: Remove CPU_STARTING and CPU_DYING notifier Sebastian Andrzej Siewior
2016-09-06 15:19 ` [tip:smp/hotplug] cpu/hotplug: " tip-bot for Thomas Gleixner
2016-09-06 16:37 ` tip-bot for Thomas Gleixner
2016-08-18 12:57 ` [PATCH 02/16] relayfs: Convert to hotplug state machine Sebastian Andrzej Siewior
2016-09-06 15:20 ` [tip:smp/hotplug] " tip-bot for Richard Weinberger
2016-09-06 16:38 ` tip-bot for Richard Weinberger
2016-08-18 12:57 ` [PATCH 03/16] slab: " Sebastian Andrzej Siewior
2016-08-18 17:08 ` Sebastian Andrzej Siewior
2016-08-23 12:53 ` [PATCH 03/16 v2] " Sebastian Andrzej Siewior
2016-09-06 15:21 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:38 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 04/16] slub: " Sebastian Andrzej Siewior
2016-09-06 15:21 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:38 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 05/16] mm: writeback: " Sebastian Andrzej Siewior
2016-09-06 15:22 ` [tip:smp/hotplug] mm/writeback: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:39 ` tip-bot for Sebastian Andrzej Siewior [this message]
2016-08-18 12:57 ` [PATCH 06/16] kernel: softirq: " Sebastian Andrzej Siewior
2016-09-06 15:22 ` [tip:smp/hotplug] kernel/softirq: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:39 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 07/16] rcu: rcutorture: " Sebastian Andrzej Siewior
2016-08-18 16:20 ` Paul E. McKenney
2016-08-18 12:57 ` [PATCH 08/16] net: mvneta: " Sebastian Andrzej Siewior
2016-09-06 15:23 ` [tip:smp/hotplug] net/mvneta: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:40 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 09/16] md: raid5: " Sebastian Andrzej Siewior
2016-09-06 15:23 ` [tip:smp/hotplug] md/raid5: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:40 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 10/16] cpuidle: pseries: " Sebastian Andrzej Siewior
2016-08-22 16:09 ` Daniel Lezcano
2016-08-22 19:04 ` Sebastian Andrzej Siewior
2016-08-23 14:16 ` Daniel Lezcano
2016-08-23 16:32 ` Sebastian Andrzej Siewior
2016-08-24 9:09 ` [PATCH 10/16 v2] " Sebastian Andrzej Siewior
2016-09-06 15:24 ` [tip:smp/hotplug] cpuidle/pseries: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:41 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 11/16] cpuidle: powernv: " Sebastian Andrzej Siewior
2016-08-24 9:12 ` Sebastian Andrzej Siewior
2016-09-06 15:24 ` [tip:smp/hotplug] cpuidle/powernv: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:41 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 12/16] cpuidle: coupled: " Sebastian Andrzej Siewior
2016-08-23 14:24 ` Daniel Lezcano
2016-08-24 9:14 ` [PATCH 12/16 v2] " Sebastian Andrzej Siewior
2016-09-06 15:25 ` [tip:smp/hotplug] cpuidle/coupled: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:42 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 13/16] MIPS: BUS: CDMM: " Sebastian Andrzej Siewior
2016-09-06 15:25 ` [tip:smp/hotplug] MIPS/BUS/CDMM: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:42 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 14/16] x86: kvm: " Sebastian Andrzej Siewior
2016-08-18 17:06 ` Paolo Bonzini
2016-09-06 15:25 ` [tip:smp/hotplug] x86/kvm: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:43 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 15/16] powerpc: powermac: " Sebastian Andrzej Siewior
2016-09-06 15:26 ` [tip:smp/hotplug] powerpc/powermac: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:43 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 12:57 ` [PATCH 16/16] powerpc: mmu nohash: " Sebastian Andrzej Siewior
2016-09-06 15:26 ` [tip:smp/hotplug] powerpc/mmu " tip-bot for Sebastian Andrzej Siewior
2016-09-06 16:44 ` tip-bot for Sebastian Andrzej Siewior
2016-08-18 13:40 ` cpu hotplug: convert more drivers Ingo Molnar
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