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

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* 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
  ...
This commit is contained in:
Linus Torvalds
2010-08-04 15:23:14 -07:00
parent ffd386a9a8 4015d9a865
commit b7c8e55db7
23 changed files with 1311 additions and 712 deletions
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121
include/linux/padata.h
View File

@@ -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