diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-12 14:27:24 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-12 14:27:24 -0800 |
| commit | 09cea96caa59fabab3030c53bd698b9b568d959a (patch) | |
| tree | a991cdc0c887fdcda37f4b751ee98d3db9559f4e /drivers/base | |
| parent | 6eb7365db6f3a4a9d8d9922bb0b800f9cbaad641 (diff) | |
| parent | e090aa80321b64c3b793f3b047e31ecf1af9538d (diff) | |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (151 commits)
powerpc: Fix usage of 64-bit instruction in 32-bit altivec code
MAINTAINERS: Add PowerPC patterns
powerpc/pseries: Track previous CPPR values to correctly EOI interrupts
powerpc/pseries: Correct pseries/dlpar.c build break without CONFIG_SMP
powerpc: Make "intspec" pointers in irq_host->xlate() const
powerpc/8xx: DTLB Miss cleanup
powerpc/8xx: Remove DIRTY pte handling in DTLB Error.
powerpc/8xx: Start using dcbX instructions in various copy routines
powerpc/8xx: Restore _PAGE_WRITETHRU
powerpc/8xx: Add missing Guarded setting in DTLB Error.
powerpc/8xx: Fixup DAR from buggy dcbX instructions.
powerpc/8xx: Tag DAR with 0x00f0 to catch buggy instructions.
powerpc/8xx: Update TLB asm so it behaves as linux mm expects.
powerpc/8xx: Invalidate non present TLBs
powerpc/pseries: Serialize cpu hotplug operations during deactivate Vs deallocate
pseries/pseries: Add code to online/offline CPUs of a DLPAR node
powerpc: stop_this_cpu: remove the cpu from the online map.
powerpc/pseries: Add kernel based CPU DLPAR handling
sysfs/cpu: Add probe/release files
powerpc/pseries: Kernel DLPAR Infrastructure
...
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/cpu.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index e62a4ccea54d..27fd775375b0 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -35,6 +35,7 @@ static ssize_t __ref store_online(struct sys_device *dev, struct sysdev_attribut struct cpu *cpu = container_of(dev, struct cpu, sysdev); ssize_t ret; + cpu_hotplug_driver_lock(); switch (buf[0]) { case '0': ret = cpu_down(cpu->sysdev.id); @@ -49,6 +50,7 @@ static ssize_t __ref store_online(struct sys_device *dev, struct sysdev_attribut default: ret = -EINVAL; } + cpu_hotplug_driver_unlock(); if (ret >= 0) ret = count; @@ -72,6 +74,38 @@ void unregister_cpu(struct cpu *cpu) per_cpu(cpu_sys_devices, logical_cpu) = NULL; return; } + +#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE +static ssize_t cpu_probe_store(struct class *class, const char *buf, + size_t count) +{ + return arch_cpu_probe(buf, count); +} + +static ssize_t cpu_release_store(struct class *class, const char *buf, + size_t count) +{ + return arch_cpu_release(buf, count); +} + +static CLASS_ATTR(probe, S_IWUSR, NULL, cpu_probe_store); +static CLASS_ATTR(release, S_IWUSR, NULL, cpu_release_store); + +int __init cpu_probe_release_init(void) +{ + int rc; + + rc = sysfs_create_file(&cpu_sysdev_class.kset.kobj, + &class_attr_probe.attr); + if (!rc) + rc = sysfs_create_file(&cpu_sysdev_class.kset.kobj, + &class_attr_release.attr); + + return rc; +} +device_initcall(cpu_probe_release_init); +#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */ + #else /* ... !CONFIG_HOTPLUG_CPU */ static inline void register_cpu_control(struct cpu *cpu) { |