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authorSudeep Holla <sudeep.holla@arm.com>2014-09-30 17:48:24 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-11-07 22:45:00 +0300
commit3d52943b3a51497a777e6d7d840a38596a92cee9 (patch)
treeeb75d73033dab562bcd01de19cfe99fbc5cdc632 /include/linux/cpu.h
parentd6ea8d01d1893e1299a4016d62fdda870b8cc215 (diff)
downloadlinux-3d52943b3a51497a777e6d7d840a38596a92cee9.tar.xz
drivers: base: add cpu_device_create to support per-cpu devices
This patch adds a new function to create per-cpu devices. This helps in: 1. reusing the device infrastructure to create any cpu related attributes and corresponding sysfs instead of creating and dealing with raw kobjects directly 2. retaining the legacy path(/sys/devices/system/cpu/..) to support existing sysfs ABI 3. avoiding to create links in the bus directory pointing to the device as there would be per-cpu instance of these devices with the same name since dev->bus is not populated to cpu_sysbus on purpose Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Tested-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: David Herrmann <dh.herrmann@gmail.com> Cc: Kay Sievers <kay@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/cpu.h')
-rw-r--r--include/linux/cpu.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index b2d9a43012b2..4260e8594bd7 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -19,6 +19,7 @@
struct device;
struct device_node;
+struct attribute_group;
struct cpu {
int node_id; /* The node which contains the CPU */
@@ -39,6 +40,9 @@ extern void cpu_remove_dev_attr(struct device_attribute *attr);
extern int cpu_add_dev_attr_group(struct attribute_group *attrs);
extern void cpu_remove_dev_attr_group(struct attribute_group *attrs);
+extern struct device *cpu_device_create(struct device *parent, void *drvdata,
+ const struct attribute_group **groups,
+ const char *fmt, ...);
#ifdef CONFIG_HOTPLUG_CPU
extern void unregister_cpu(struct cpu *cpu);
extern ssize_t arch_cpu_probe(const char *, size_t);