| From: |
| "Fenghua Yu" <fenghua.yu@intel.com> |
| To: |
| "Ingo Molnar" <mingo@elte.hu>,
"Thomas Gleixner" <tglx@linutronix.de>,
"H Peter Anvin" <hpa@zytor.com>,
"Zwane Mwaikambo" <zwane@arm.linux.org.uk>,
"Tony Luck" <tony.luck@intel.com>,
"Asit K Mallick" <asit.k.mallick@intel.com>,
"Suresh B Siddha" <suresh.b.siddha@intel.com>,
"Len Brown" <lenb@kernel.org> |
| Subject: |
| [PATCH 0/8] Online/offline BSP on x86 |
| Date: |
| Wed, 5 Oct 2011 09:39:11 -0700 |
| Message-ID: |
| <1317832759-10223-1-git-send-email-fenghua.yu@intel.com> |
| Cc: |
| "linux-kernel" <linux-kernel@vger.kernel.org>,
"Fenghua Yu" <fenghua.yu@intel.com> |
| Archive‑link: | |
Article |
From: Fenghua Yu <fenghua.yu@intel.com>
BSP or CPU0 has been the last obstacle to CPU hotplug on x86. This patch set
implements BSP online and offline and removes this obstacle to CPU hotplug.
Fenghua Yu (8):
x86, apic.c: Disable irq0 if CPU enables ARAT for local apic timer
x86/mtrr/main.c: Ask the first online CPU to save mtrr
x86, i387.c: thread xstate is initialized only on BSP once
kernel/workqueue.c: unbound work queue rescuer runs on first cpu in
cpumask_online_cpu
x86, common.c, smpboot.c: Init BSP during BSP online and don't
offline BSP if irq is bound to it
x86, topology.c: Enable CPU0 online/offline
kernel/power/main.c: Not suspend/resume if CPU0 is offlined
kernel/cpu.c: Define bsp_hotpluggable variable
Documentation/kernel-parameters.txt | 7 ++++++
arch/x86/include/asm/processor.h | 1 +
arch/x86/kernel/apic/apic.c | 5 ++++
arch/x86/kernel/cpu/common.c | 13 +++++++++--
arch/x86/kernel/cpu/mtrr/main.c | 6 +++-
arch/x86/kernel/i387.c | 9 +++++++-
arch/x86/kernel/smpboot.c | 38 ++++++++++++++++++++++++++++------
arch/x86/kernel/topology.c | 22 +++++++++++++------
include/linux/cpu.h | 2 +
kernel/cpu.c | 5 ++++
kernel/power/main.c | 9 ++++++++
kernel/workqueue.c | 4 +-
12 files changed, 99 insertions(+), 22 deletions(-)
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