[PATCH 6/8] ACPI: processor: override the interface of register acpi processor handler for Xen vcpu

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

From: Tang Liang <liang.tang@oracle.com>

This patch calls the check which detectes whether to override
the interface to register ACPI processor.

Signed-off-by: Tang Liang <liang.tang@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
 drivers/acpi/processor_driver.c |    2 ++
 include/acpi/processor.h        |    4 ++++
 2 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 55f0b89..2fec82e 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -815,6 +815,8 @@ static int __init acpi_processor_init(void)
 
 	memset(&errata, 0, sizeof(errata));
 
+	xen_processor_driver_register();
+
 	if (__acpi_processor_register_driver) {
 		result = __acpi_processor_register_driver();
 		if (result < 0)
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 969cbc9..cf53ed8 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -283,6 +283,10 @@ static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
 }
 #endif
 
+/* in processor_xen.c */
+extern void xen_processor_driver_register(void);
+
+
 /* in processor_perflib.c */
 
 #ifdef CONFIG_CPU_FREQ
-- 
1.7.7.3