From: tip-bot for Sebastian Andrzej Siewior <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: peterz@infradead.org, mingo@kernel.org, hpa@zytor.com,
bigeasy@linutronix.de, tglx@linutronix.de,
linux-kernel@vger.kernel.org
Subject: [tip:smp/hotplug] x86/apic/uv: Convert to hotplug state machine
Date: Mon, 19 Sep 2016 12:59:32 -0700 [thread overview]
Message-ID: <tip-b067a7be411ccb31b6cc866fc213670c3acf4001@git.kernel.org> (raw)
In-Reply-To: <20160906170457.32393-19-bigeasy@linutronix.de>
Commit-ID: b067a7be411ccb31b6cc866fc213670c3acf4001
Gitweb: http://git.kernel.org/tip/b067a7be411ccb31b6cc866fc213670c3acf4001
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
AuthorDate: Tue, 6 Sep 2016 19:04:54 +0200
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Mon, 19 Sep 2016 21:44:33 +0200
x86/apic/uv: Convert to hotplug state machine
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160906170457.32393-19-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/kernel/apic/x2apic_uv_x.c | 31 ++++++-------------------------
1 file changed, 6 insertions(+), 25 deletions(-)
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index cb0673c..391b7f8 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -927,7 +927,7 @@ static void uv_heartbeat(unsigned long ignored)
mod_timer(timer, jiffies + SCIR_CPU_HB_INTERVAL);
}
-static void uv_heartbeat_enable(int cpu)
+static int uv_heartbeat_enable(unsigned int cpu)
{
while (!uv_cpu_scir_info(cpu)->enabled) {
struct timer_list *timer = &uv_cpu_scir_info(cpu)->timer;
@@ -941,43 +941,24 @@ static void uv_heartbeat_enable(int cpu)
/* also ensure that boot cpu is enabled */
cpu = 0;
}
+ return 0;
}
#ifdef CONFIG_HOTPLUG_CPU
-static void uv_heartbeat_disable(int cpu)
+static int uv_heartbeat_disable(unsigned int cpu)
{
if (uv_cpu_scir_info(cpu)->enabled) {
uv_cpu_scir_info(cpu)->enabled = 0;
del_timer(&uv_cpu_scir_info(cpu)->timer);
}
uv_set_cpu_scir_bits(cpu, 0xff);
-}
-
-/*
- * cpu hotplug notifier
- */
-static int uv_scir_cpu_notify(struct notifier_block *self, unsigned long action,
- void *hcpu)
-{
- long cpu = (long)hcpu;
-
- switch (action & ~CPU_TASKS_FROZEN) {
- case CPU_DOWN_FAILED:
- case CPU_ONLINE:
- uv_heartbeat_enable(cpu);
- break;
- case CPU_DOWN_PREPARE:
- uv_heartbeat_disable(cpu);
- break;
- default:
- break;
- }
- return NOTIFY_OK;
+ return 0;
}
static __init void uv_scir_register_cpu_notifier(void)
{
- hotcpu_notifier(uv_scir_cpu_notify, 0);
+ cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN, "x86/x2apic-uvx:online",
+ uv_heartbeat_enable, uv_heartbeat_disable);
}
#else /* !CONFIG_HOTPLUG_CPU */
next prev parent reply other threads:[~2016-09-19 20:00 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-06 17:04 cpu hotplug: convert more drivers (batch #3) Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 01/21] arm64: FP/SIMD: Convert to hotplug state machine Sebastian Andrzej Siewior
2016-09-06 18:14 ` Will Deacon
2016-09-19 19:51 ` [tip:smp/hotplug] arm64/FP/SIMD: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 02/21] ARM: shmobile: " Sebastian Andrzej Siewior
2016-09-06 18:05 ` Geert Uytterhoeven
2016-09-07 13:58 ` Sebastian Andrzej Siewior
2016-09-19 19:52 ` [tip:smp/hotplug] ARM/shmobile: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 03/21] ARM: OMAP: wakeupgen: " Sebastian Andrzej Siewior
2016-09-13 22:24 ` Tony Lindgren
2016-09-19 19:52 ` [tip:smp/hotplug] ARM/OMAP/wakeupgen: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 04/21] ia64: mca: " Sebastian Andrzej Siewior
2016-09-19 19:53 ` [tip:smp/hotplug] ia64/mca: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 05/21] sh: SH-X3 SMP: " Sebastian Andrzej Siewior
2016-09-19 19:53 ` [tip:smp/hotplug] sh/SH-X3 " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 06/21] x86: microcode: " Sebastian Andrzej Siewior
2016-09-07 11:36 ` Borislav Petkov
2016-09-07 14:51 ` Sebastian Andrzej Siewior
2016-09-07 16:02 ` Borislav Petkov
2016-09-07 16:45 ` [PATCH 06/21 v2] " Sebastian Andrzej Siewior
2016-09-19 19:54 ` [tip:smp/hotplug] x86/microcode: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 07/21] lib: irq_poll: " Sebastian Andrzej Siewior
2016-09-19 19:54 ` [tip:smp/hotplug] lib/irq_poll: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 08/21] block: softirq: " Sebastian Andrzej Siewior
2016-09-19 19:55 ` [tip:smp/hotplug] block/softirq: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 09/21] oprofile: timer: " Sebastian Andrzej Siewior
2016-09-19 19:55 ` [tip:smp/hotplug] oprofile/timer: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 10/21] virtio scsi: " Sebastian Andrzej Siewior
2016-09-19 19:56 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 11/21] ACPI: processor: " Sebastian Andrzej Siewior
2016-09-06 21:08 ` Rafael J. Wysocki
2016-09-07 14:01 ` Sebastian Andrzej Siewior
2016-09-07 15:59 ` Rafael J. Wysocki
2016-09-19 19:56 ` [tip:smp/hotplug] ACPI/processor: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 12/21] cpufreq: " Sebastian Andrzej Siewior
2016-09-06 21:27 ` Rafael J. Wysocki
2016-09-07 14:18 ` Sebastian Andrzej Siewior
2016-09-07 15:58 ` Rafael J. Wysocki
2016-09-19 19:56 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-09-20 14:56 ` [PATCH] cpufreq: fix up conversion " Sebastian Andrzej Siewior
2016-09-20 15:07 ` [tip:smp/hotplug] cpufreq: Fix " tip-bot for Sebastian Andrzej Siewior
2016-09-20 16:08 ` Borislav Petkov
2016-09-20 16:17 ` [PATCH] cpufreq: fix " Rafael J. Wysocki
2016-09-06 17:04 ` [PATCH 13/21] padata: Convert " Sebastian Andrzej Siewior
2016-09-19 19:57 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 14/21] fault-injection: cpu: " Sebastian Andrzej Siewior
2016-09-19 19:57 ` [tip:smp/hotplug] fault-injection/cpu: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 15/21] mips: octeon: smp: " Sebastian Andrzej Siewior
2016-09-07 8:24 ` Matt Redfearn
2016-09-07 14:27 ` Sebastian Andrzej Siewior
2016-09-08 8:34 ` Matt Redfearn
2016-09-19 15:10 ` Ralf Baechle
2016-09-19 19:58 ` [tip:smp/hotplug] mips/octeon/smp: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 16/21] mips: loongson: smp: " Sebastian Andrzej Siewior
2016-09-19 15:10 ` Ralf Baechle
2016-09-19 19:58 ` [tip:smp/hotplug] mips/loongson/smp: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 17/21] s390: mm: pfault: " Sebastian Andrzej Siewior
2016-09-19 19:59 ` [tip:smp/hotplug] s390/mm/pfault: " tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 18/21] x86: apic: uv: " Sebastian Andrzej Siewior
2016-09-19 19:59 ` tip-bot for Sebastian Andrzej Siewior [this message]
2016-09-06 17:04 ` [PATCH 19/21] blk: mq: reserve hotplug ID states for block Sebastian Andrzej Siewior
2016-09-19 20:03 ` [tip:smp/hotplug] blk/mq: Reserve hotplug ID states for block multiqueue tip-bot for Sebastian Andrzej Siewior
2016-09-19 21:24 ` [tip:smp/hotplug] blk/mq: Reserve hotplug " tip-bot for Sebastian Andrzej Siewior
2016-09-21 7:45 ` tip-bot for Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 20/21] blk: mq: cpu-notif: Convert to hotplug state machine Sebastian Andrzej Siewior
2016-09-06 17:04 ` [PATCH 21/21] blk: mq: " Sebastian Andrzej Siewior
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