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Commit 4039483f authored by Michael Holzheu's avatar Michael Holzheu Committed by Greg Kroah-Hartman
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[PATCH] Driver Core: Add /sys/hypervisor when needed 



To have a home for all hypervisors, this patch creates /sys/hypervisor.
A new config option SYS_HYPERVISOR is introduced, which should to be set
by architecture dependent hypervisors (e.g. s390 or Xen).

Acked-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarMichael Holzheu <holzheu@de.ibm.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent e3915532

drivers/base/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -38,3 +38,7 @@ config DEBUG_DRIVER 
	  If you are unsure about this, say N here.



endmenu



config SYS_HYPERVISOR

	bool

	default n

drivers/base/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ obj-$(CONFIG_FW_LOADER) += firmware_class.o 
obj-$(CONFIG_NUMA)	+= node.o

obj-$(CONFIG_MEMORY_HOTPLUG) += memory.o

obj-$(CONFIG_SMP)	+= topology.o

obj-$(CONFIG_SYS_HYPERVISOR) += hypervisor.o



ifeq ($(CONFIG_DEBUG_DRIVER),y)

EXTRA_CFLAGS += -DDEBUG

drivers/base/base.h

+5 −0
Original line number Diff line number Diff line
@@ -5,6 +5,11 @@ extern int devices_init(void); 
extern int buses_init(void);

extern int classes_init(void);

extern int firmware_init(void);

#ifdef CONFIG_SYS_HYPERVISOR

extern int hypervisor_init(void);

#else

static inline int hypervisor_init(void) { return 0; }

#endif

extern int platform_bus_init(void);

extern int system_bus_init(void);

extern int cpu_dev_init(void);

drivers/base/hypervisor.c

0 → 100644
+19 −0
Original line number Diff line number Diff line 
/*

 * hypervisor.c - /sys/hypervisor subsystem.

 *

 * This file is released under the GPLv2

 *

 */



#include <linux/kobject.h>

#include <linux/device.h>



#include "base.h"



decl_subsys(hypervisor, NULL, NULL);

EXPORT_SYMBOL_GPL(hypervisor_subsys);



int __init hypervisor_init(void)

{

	return subsystem_register(&hypervisor_subsys);

}

drivers/base/init.c

+1 −0
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ void __init driver_init(void) 
	buses_init();

	classes_init();

	firmware_init();

	hypervisor_init();



	/* These are also core pieces, but must come after the

	 * core core pieces.