Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH v2 RESEND] ACPI: Add ACPI CPU hot-remove support | Date | Wed, 31 Oct 2012 23:27:04 +0100 |
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On Friday, October 19, 2012 01:09:53 PM Toshi Kani wrote: > Added CPU hot-remove support through an ACPI eject notification. > It calls acpi_bus_hot_remove_device(), which shares the same code > path with the sysfs eject operation. acpi_os_hotplug_execute() > serializes hot-remove operations between ACPI hot-remove and sysfs > eject requests. > > Signed-off-by: Toshi Kani <toshi.kani@hp.com> > Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> > Tested-by: IgorMammedov <imammedo@redhat.com> > Tested-by: Vijay Mohan Pandarathil <vijaymohan.pandarathil@hp.com> > Tested-by: Prarit Bhargava <prarit@redhat.com>
This doesn't build with modular processor driver.
Thanks, Rafael
> --- > v2: Rebased to the current Linus's tree. > --- > drivers/acpi/processor_driver.c | 27 +++++++++++++++++---------- > 1 file changed, 17 insertions(+), 10 deletions(-) > > diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c > index e78c2a5..1cc9652 100644 > --- a/drivers/acpi/processor_driver.c > +++ b/drivers/acpi/processor_driver.c > @@ -694,8 +694,8 @@ int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device) > static void acpi_processor_hotplug_notify(acpi_handle handle, > u32 event, void *data) > { > - struct acpi_processor *pr; > struct acpi_device *device = NULL; > + struct acpi_eject_event *ej_event = NULL; > u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */ > int result; > > @@ -727,20 +727,27 @@ static void acpi_processor_hotplug_notify(acpi_handle handle, > "received ACPI_NOTIFY_EJECT_REQUEST\n")); > > if (acpi_bus_get_device(handle, &device)) { > - printk(KERN_ERR PREFIX > - "Device don't exist, dropping EJECT\n"); > + pr_err(PREFIX "Device don't exist, dropping EJECT\n"); > break; > } > - pr = acpi_driver_data(device); > - if (!pr) { > - printk(KERN_ERR PREFIX > - "Driver data is NULL, dropping EJECT\n"); > + if (!acpi_driver_data(device)) { > + pr_err(PREFIX "Driver data is NULL, dropping EJECT\n"); > break; > } > > - /* REVISIT: update when eject is supported */ > - ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED; > - break; > + ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL); > + if (!ej_event) { > + pr_err(PREFIX "No memory, dropping EJECT\n"); > + break; > + } > + > + ej_event->handle = handle; > + ej_event->event = ACPI_NOTIFY_EJECT_REQUEST; > + acpi_os_hotplug_execute(acpi_bus_hot_remove_device, > + (void *)ej_event); > + > + /* eject is performed asynchronously */ > + return; > > default: > ACPI_DEBUG_PRINT((ACPI_DB_INFO, > -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.
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