Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (39 commits)
  random: Reorder struct entropy_store to remove padding on 64bits
  padata: update API documentation
  padata: Remove padata_get_cpumask
  crypto: pcrypt - Update pcrypt cpumask according to the padata cpumask notifier
  crypto: pcrypt - Rename pcrypt_instance
  padata: Pass the padata cpumasks to the cpumask_change_notifier chain
  padata: Rearrange set_cpumask functions
  padata: Rename padata_alloc functions
  crypto: pcrypt - Dont calulate a callback cpu on empty callback cpumask
  padata: Check for valid cpumasks
  padata: Allocate cpumask dependend recources in any case
  padata: Fix cpu index counting
  crypto: geode_aes - Convert pci_table entries to PCI_VDEVICE (if PCI_ANY_ID is used)
  pcrypt: Added sysfs interface to pcrypt
  padata: Added sysfs primitives to padata subsystem
  padata: Make two separate cpumasks
  padata: update documentation
  padata: simplify serialization mechanism
  padata: make padata_do_parallel to return zero on success
  padata: Handle empty padata cpumasks
  ...

1 files changed, 85 insertions, 36 deletions

diff --git a/include/linux/padata.h b/include/linux/padata.h
index 8d8406246ee..bdcd1e9eace 100644
--- a/include/linux/padata.h
+++ b/include/linux/padata.h
@@ -25,6 +25,11 @@
 #include <linux/spinlock.h>
 #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
 
 /**
  * struct padata_priv -  Embedded to the users data structure.
@@ -59,7 +64,20 @@ struct padata_list {
 };
 
 /**
- * struct padata_queue - The percpu padata queues.
+* struct padata_serial_queue - The percpu padata serial queue
+*
+* @serial: List to wait for serialization after reordering.
+* @work: work struct for serialization.
+* @pd: Backpointer to the internal control structure.
+*/
+struct padata_serial_queue {
+       struct padata_list    serial;
+       struct work_struct    work;
+       struct parallel_data *pd;
+};
+
+/**
+ * struct padata_parallel_queue - The percpu padata parallel queue
  *
  * @parallel: List to wait for parallelization.
  * @reorder: List to wait for reordering after parallel processing.
@@ -67,18 +85,28 @@ struct padata_list {
  * @pwork: work struct for parallelization.
  * @swork: work struct for serialization.
  * @pd: Backpointer to the internal control structure.
+ * @work: work struct for parallelization.
  * @num_obj: Number of objects that are processed by this cpu.
  * @cpu_index: Index of the cpu.
  */
-struct padata_queue {
-	struct padata_list	parallel;
-	struct padata_list	reorder;
-	struct padata_list	serial;
-	struct work_struct	pwork;
-	struct work_struct	swork;
-	struct parallel_data    *pd;
-	atomic_t		num_obj;
-	int			cpu_index;
+struct padata_parallel_queue {
+       struct padata_list    parallel;
+       struct padata_list    reorder;
+       struct parallel_data *pd;
+       struct work_struct    work;
+       atomic_t              num_obj;
+       int                   cpu_index;
+};
+
+/**
+ * struct padata_cpumask - The cpumasks for the parallel/serial workers
+ *
+ * @pcpu: cpumask for the parallel workers.
+ * @cbcpu: cpumask for the serial (callback) workers.
+ */
+struct padata_cpumask {
+	cpumask_var_t	pcpu;
+	cpumask_var_t	cbcpu;
 };
 
 /**
@@ -86,25 +114,29 @@ struct padata_queue {
  * that depends on the cpumask in use.
  *
  * @pinst: padata instance.
- * @queue: percpu padata queues.
+ * @pqueue: percpu padata queues used for parallelization.
+ * @squeue: percpu padata queues used for serialuzation.
  * @seq_nr: The sequence number that will be attached to the next object.
  * @reorder_objects: Number of objects waiting in the reorder queues.
  * @refcnt: Number of objects holding a reference on this parallel_data.
  * @max_seq_nr:  Maximal used sequence number.
- * @cpumask: cpumask in use.
+ * @cpumask: The cpumasks in use for parallel and serial workers.
  * @lock: Reorder lock.
+ * @processed: Number of already processed objects.
  * @timer: Reorder timer.
  */
 struct parallel_data {
-	struct padata_instance	*pinst;
-	struct padata_queue	*queue;
-	atomic_t		seq_nr;
-	atomic_t		reorder_objects;
-	atomic_t                refcnt;
-	unsigned int		max_seq_nr;
-	cpumask_var_t		cpumask;
-	spinlock_t              lock;
-	struct timer_list       timer;
+	struct padata_instance		*pinst;
+	struct padata_parallel_queue	*pqueue;
+	struct padata_serial_queue	*squeue;
+	atomic_t			seq_nr;
+	atomic_t			reorder_objects;
+	atomic_t			refcnt;
+	unsigned int			max_seq_nr;
+	struct padata_cpumask		cpumask;
+	spinlock_t                      lock ____cacheline_aligned;
+	unsigned int			processed;
+	struct timer_list		timer;
 };
 
 /**
@@ -113,31 +145,48 @@ struct parallel_data {
  * @cpu_notifier: cpu hotplug notifier.
  * @wq: The workqueue in use.
  * @pd: The internal control structure.
- * @cpumask: User supplied cpumask.
+ * @cpumask: User supplied cpumasks for parallel and serial works.
+ * @cpumask_change_notifier: Notifiers chain for user-defined notify
+ *            callbacks that will be called when either @pcpu or @cbcpu
+ *            or both cpumasks change.
+ * @kobj: padata instance kernel object.
  * @lock: padata instance lock.
  * @flags: padata flags.
  */
 struct padata_instance {
-	struct notifier_block   cpu_notifier;
-	struct workqueue_struct *wq;
-	struct parallel_data	*pd;
-	cpumask_var_t           cpumask;
-	struct mutex		lock;
-	u8			flags;
-#define	PADATA_INIT		1
-#define	PADATA_RESET		2
+	struct notifier_block		 cpu_notifier;
+	struct workqueue_struct		*wq;
+	struct parallel_data		*pd;
+	struct padata_cpumask		cpumask;
+	struct blocking_notifier_head	 cpumask_change_notifier;
+	struct kobject                   kobj;
+	struct mutex			 lock;
+	u8				 flags;
+#define	PADATA_INIT	1
+#define	PADATA_RESET	2
+#define	PADATA_INVALID	4
 };
 
-extern struct padata_instance *padata_alloc(const struct cpumask *cpumask,
-					    struct workqueue_struct *wq);
+extern struct padata_instance *padata_alloc_possible(
+					struct workqueue_struct *wq);
+extern struct padata_instance *padata_alloc(struct workqueue_struct *wq,
+					    const struct cpumask *pcpumask,
+					    const struct cpumask *cbcpumask);
 extern void padata_free(struct padata_instance *pinst);
 extern int padata_do_parallel(struct padata_instance *pinst,
 			      struct padata_priv *padata, int cb_cpu);
 extern void padata_do_serial(struct padata_priv *padata);
-extern int padata_set_cpumask(struct padata_instance *pinst,
+extern int padata_set_cpumask(struct padata_instance *pinst, int cpumask_type,
 			      cpumask_var_t cpumask);
-extern int padata_add_cpu(struct padata_instance *pinst, int cpu);
-extern int padata_remove_cpu(struct padata_instance *pinst, int cpu);
-extern void padata_start(struct padata_instance *pinst);
+extern int padata_set_cpumasks(struct padata_instance *pinst,
+			       cpumask_var_t pcpumask,
+			       cpumask_var_t cbcpumask);
+extern int padata_add_cpu(struct padata_instance *pinst, int cpu, int mask);
+extern int padata_remove_cpu(struct padata_instance *pinst, int cpu, int mask);
+extern int padata_start(struct padata_instance *pinst);
 extern void padata_stop(struct padata_instance *pinst);
+extern int padata_register_cpumask_notifier(struct padata_instance *pinst,
+					    struct notifier_block *nblock);
+extern int padata_unregister_cpumask_notifier(struct padata_instance *pinst,
+					      struct notifier_block *nblock);
 #endif