diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-28 01:12:41 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-28 01:12:41 +0100 |
| commit | 5c2aae8355f7ec1341d5c473c500a77bbfa7f701 (patch) | |
| tree | bdb6059fbc1b476c36e7cda433fc4db64c627407 /arch/x86 | |
| parent | 3fbc4d63744b21ed6814ce768672531500bd3f14 (diff) | |
| parent | 16ff816d3b5d2b81fcff5ca44eb9a98ac3b604b4 (diff) | |
Merge branch 'acpi-hotplug'
* acpi-hotplug:
ACPI / memhotplug: Use defined marco METHOD_NAME__STA
ACPI / hotplug: Use kobject_init_and_add() instead of _init() and _add()
ACPI / hotplug: Don't set kobject parent pointer explicitly
ACPI / hotplug: Set kobject name via kobject_add(), not kobject_set_name()
hotplug, powerpc, x86: Remove cpu_hotplug_driver_lock()
hotplug / x86: Disable ARCH_CPU_PROBE_RELEASE on x86
hotplug / x86: Add hotplug lock to missing places
hotplug / x86: Fix online state in cpu0 debug interface
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 21 | ||||
| -rw-r--r-- | arch/x86/kernel/topology.c | 11 |
3 files changed, 7 insertions, 29 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index f67e839f06c..0c11032e2e9 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -254,10 +254,6 @@ config ARCH_HWEIGHT_CFLAGS default "-fcall-saved-ecx -fcall-saved-edx" if X86_32 default "-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11" if X86_64 -config ARCH_CPU_PROBE_RELEASE - def_bool y - depends on HOTPLUG_CPU - config ARCH_SUPPORTS_UPROBES def_bool y diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 6cacab671f9..e73b3f53310 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -82,27 +82,6 @@ /* State of each CPU */ DEFINE_PER_CPU(int, cpu_state) = { 0 }; -#ifdef CONFIG_HOTPLUG_CPU -/* - * We need this for trampoline_base protection from concurrent accesses when - * off- and onlining cores wildly. - */ -static DEFINE_MUTEX(x86_cpu_hotplug_driver_mutex); - -void cpu_hotplug_driver_lock(void) -{ - mutex_lock(&x86_cpu_hotplug_driver_mutex); -} - -void cpu_hotplug_driver_unlock(void) -{ - mutex_unlock(&x86_cpu_hotplug_driver_mutex); -} - -ssize_t arch_cpu_probe(const char *buf, size_t count) { return -1; } -ssize_t arch_cpu_release(const char *buf, size_t count) { return -1; } -#endif - /* Number of siblings per CPU package */ int smp_num_siblings = 1; EXPORT_SYMBOL(smp_num_siblings); diff --git a/arch/x86/kernel/topology.c b/arch/x86/kernel/topology.c index 6e60b5fe224..649b010da00 100644 --- a/arch/x86/kernel/topology.c +++ b/arch/x86/kernel/topology.c @@ -65,29 +65,32 @@ int __ref _debug_hotplug_cpu(int cpu, int action) if (!cpu_is_hotpluggable(cpu)) return -EINVAL; - cpu_hotplug_driver_lock(); + lock_device_hotplug(); switch (action) { case 0: ret = cpu_down(cpu); if (!ret) { pr_info("CPU %u is now offline\n", cpu); + dev->offline = true; kobject_uevent(&dev->kobj, KOBJ_OFFLINE); } else pr_debug("Can't offline CPU%d.\n", cpu); break; case 1: ret = cpu_up(cpu); - if (!ret) + if (!ret) { + dev->offline = false; kobject_uevent(&dev->kobj, KOBJ_ONLINE); - else + } else { pr_debug("Can't online CPU%d.\n", cpu); + } break; default: ret = -EINVAL; } - cpu_hotplug_driver_unlock(); + unlock_device_hotplug(); return ret; } |