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| author | Michael Holzheu <holzheu@de.ibm.com> | 2006-05-09 12:53:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-06-21 21:40:48 +0200 |
| commit | 4039483fd3065920f035eed39ec59085421c0a4f (patch) | |
| tree | fc89410a8cd031c3f71a7319987fa6fc9b09336c | |
| parent | [PATCH] Driver Core: Fix platform_device_add to use device_add (diff) | |
| download | linux-4039483fd3065920f035eed39ec59085421c0a4f.tar.xz linux-4039483fd3065920f035eed39ec59085421c0a4f.zip | |
[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: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/base/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/base/Makefile | 1 | ||||
| -rw-r--r-- | drivers/base/base.h | 5 | ||||
| -rw-r--r-- | drivers/base/hypervisor.c | 19 | ||||
| -rw-r--r-- | drivers/base/init.c | 1 | ||||
| -rw-r--r-- | include/linux/kobject.h | 2 |
6 files changed, 32 insertions, 0 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index f0eff3dac58d..80502dc6ed66 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -38,3 +38,7 @@ config DEBUG_DRIVER If you are unsure about this, say N here. endmenu + +config SYS_HYPERVISOR + bool + default n diff --git a/drivers/base/Makefile b/drivers/base/Makefile index e99471d3232b..659cde6c2fb9 100644 --- a/drivers/base/Makefile +++ b/drivers/base/Makefile @@ -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 diff --git a/drivers/base/base.h b/drivers/base/base.h index 122498aef50b..79115eff6e94 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -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); diff --git a/drivers/base/hypervisor.c b/drivers/base/hypervisor.c new file mode 100644 index 000000000000..0c85e9d6a448 --- /dev/null +++ b/drivers/base/hypervisor.c @@ -0,0 +1,19 @@ +/* + * 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); +} diff --git a/drivers/base/init.c b/drivers/base/init.c index c648914b9cde..37138154f9e8 100644 --- a/drivers/base/init.c +++ b/drivers/base/init.c @@ -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. diff --git a/include/linux/kobject.h b/include/linux/kobject.h index c187c53cecd0..2d229327959e 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -190,6 +190,8 @@ struct subsystem _varname##_subsys = { \ /* The global /sys/kernel/ subsystem for people to chain off of */ extern struct subsystem kernel_subsys; +/* The global /sys/hypervisor/ subsystem */ +extern struct subsystem hypervisor_subsys; /** * Helpers for setting the kset of registered objects. |