padata: Added sysfs primitives to padata subsystem

Added sysfs primitives to padata subsystem. Now API user may
embedded kobject each padata instance contains into any sysfs
hierarchy. For now padata sysfs interface provides only
two objects:
    serial_cpumask   [RW] - cpumask for serial workers
    parallel_cpumask [RW] - cpumask for parallel workers

Signed-off-by: Dan Kruchinin <dkruchinin@acm.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/padata.h b/include/linux/padata.h
index 621e7736690c..293ad46ffced 100644
--- a/include/linux/padata.h
+++ b/include/linux/padata.h
@@ -26,6 +26,7 @@
 #include <linux/list.h>
 #include <linux/timer.h>
 #include <linux/notifier.h>
+#include <linux/kobject.h>
 
 #define PADATA_CPU_SERIAL   0x01
 #define PADATA_CPU_PARALLEL 0x02
@@ -142,7 +143,8 @@ struct parallel_data {
  *           cbcpu for parallel and serial works respectivly.
  * @cpumask_change_notifier: Notifiers chain for user-defined notify
  *            callbacks that will be called when either @pcpu or @cbcpu
- *             or both cpumasks change.
+ *            or both cpumasks change.
+ * @kobj: padata instance kernel object.
  * @lock: padata instance lock.
  * @flags: padata flags.
  */
@@ -155,6 +157,7 @@ struct padata_instance {
                 cpumask_var_t            cbcpu;
         } cpumask;
         struct blocking_notifier_head    cpumask_change_notifier;
+        struct kobject                   kobj;
         struct mutex                     lock;
         u8                               flags;
 #define PADATA_INIT     1