diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2008-04-29 02:36:07 -0400 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2008-07-16 23:27:01 +0200 |
| commit | 9f1eb99c757939b0b1783f926130993e9c298bae (patch) | |
| tree | a674f7ce31f6ac3caa3f27da0aa760331bc705a4 | |
| parent | b62b8ef906cdf7115af579ce7378886ce3e0ce00 (diff) | |
create sysfs link from acpi device to sysdev for cpu
Sys I/F under acpi device node and sysdev device node are both
needed for cpu hot-removal. User space need this link so that
they know they are poking the sys I/F for the same cpu.
http://bugzilla.kernel.org/show_bug.cgi?id=9772
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
| -rw-r--r-- | drivers/acpi/processor_core.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 1c0008edccda..feddc8ed870a 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -621,7 +621,7 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device) int result = 0; acpi_status status = AE_OK; struct acpi_processor *pr; - + struct sys_device *sysdev; pr = acpi_driver_data(device); @@ -652,6 +652,10 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device) if (result) goto end; + sysdev = get_cpu_sysdev(pr->id); + if (sysfs_create_link(&device->dev.kobj, &sysdev->kobj, "sysdev")) + return -EFAULT; + status = acpi_install_notify_handler(pr->handle, ACPI_DEVICE_NOTIFY, acpi_processor_notify, pr); @@ -810,6 +814,8 @@ static int acpi_processor_remove(struct acpi_device *device, int type) status = acpi_remove_notify_handler(pr->handle, ACPI_DEVICE_NOTIFY, acpi_processor_notify); + sysfs_remove_link(&device->dev.kobj, "sysdev"); + acpi_processor_remove_fs(device); if (pr->cdev) { |