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| author | Ashok Raj <ashok.raj@intel.com> | 2006-03-25 03:08:18 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-25 08:23:01 -0800 |
| commit | 34f361ade2fb4a869f6a7714d01c04ce4cfa75d9 (patch) | |
| tree | a250999fc386ddbfe3c92e4d8ffdcf2d3393134a /drivers | |
| parent | f1a1c2dc2a956c375b432d2a9a28e52ba9d81c7c (diff) | |
| download | linux-3.10-34f361ade2fb4a869f6a7714d01c04ce4cfa75d9.tar.gz linux-3.10-34f361ade2fb4a869f6a7714d01c04ce4cfa75d9.tar.bz2 linux-3.10-34f361ade2fb4a869f6a7714d01c04ce4cfa75d9.zip | |
[PATCH] Check if cpu can be onlined before calling smp_prepare_cpu()
- Moved check for online cpu out of smp_prepare_cpu()
- Moved default declaration of smp_prepare_cpu() to kernel/cpu.c
- Removed lock_cpu_hotplug() from smp_prepare_cpu() to around it, since
its called from cpu_up() as well now.
- Removed clearing from cpu_present_map during cpu_offline as it breaks
using cpu_up() directly during a subsequent online operation.
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com>
Cc: "Li, Shaohua" <shaohua.li@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/base/cpu.c | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 29f3d7504da..dd712b24ec9 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -19,11 +19,6 @@ EXPORT_SYMBOL(cpu_sysdev_class); static struct sys_device *cpu_sys_devices[NR_CPUS]; #ifdef CONFIG_HOTPLUG_CPU -int __attribute__((weak)) smp_prepare_cpu (int cpu) -{ - return 0; -} - static ssize_t show_online(struct sys_device *dev, char *buf) { struct cpu *cpu = container_of(dev, struct cpu, sysdev); @@ -44,9 +39,7 @@ static ssize_t store_online(struct sys_device *dev, const char *buf, kobject_uevent(&dev->kobj, KOBJ_OFFLINE); break; case '1': - ret = smp_prepare_cpu(cpu->sysdev.id); - if (!ret) - ret = cpu_up(cpu->sysdev.id); + ret = cpu_up(cpu->sysdev.id); if (!ret) kobject_uevent(&dev->kobj, KOBJ_ONLINE); break; |