Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 25c38d3f authored by Huang Ying's avatar Huang Ying Committed by Herbert Xu
Browse files

crypto: api - Use dedicated workqueue for crypto subsystem 



Use dedicated workqueue for crypto subsystem

A dedicated workqueue named kcrypto_wq is created to be used by crypto
subsystem. The system shared keventd_wq is not suitable for
encryption/decryption, because of potential starvation problem.

Signed-off-by: default avatarHuang Ying <ying.huang@intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 6fe4a28d

crypto/Kconfig

+3 −0
Original line number Original line Diff line number Diff line
@@ -106,6 +106,9 @@ config CRYPTO_NULL 
	help

	help

	  These are 'Null' algorithms, used by IPsec, which do nothing.

	  These are 'Null' algorithms, used by IPsec, which do nothing.





config CRYPTO_WORKQUEUE

       tristate



config CRYPTO_CRYPTD

config CRYPTO_CRYPTD

	tristate "Software async crypto daemon"

	tristate "Software async crypto daemon"

	select CRYPTO_BLKCIPHER

	select CRYPTO_BLKCIPHER

crypto/Makefile

+2 −0
Original line number Original line Diff line number Diff line
@@ -5,6 +5,8 @@ 
obj-$(CONFIG_CRYPTO) += crypto.o

obj-$(CONFIG_CRYPTO) += crypto.o

crypto-objs := api.o cipher.o digest.o compress.o

crypto-objs := api.o cipher.o digest.o compress.o





obj-$(CONFIG_CRYPTO_WORKQUEUE) += crypto_wq.o



obj-$(CONFIG_CRYPTO_FIPS) += fips.o

obj-$(CONFIG_CRYPTO_FIPS) += fips.o





crypto_algapi-$(CONFIG_PROC_FS) += proc.o

crypto_algapi-$(CONFIG_PROC_FS) += proc.o

crypto/crypto_wq.c

0 → 100644
+38 −0
Original line number Original line Diff line number Diff line 
/*

 * Workqueue for crypto subsystem

 *

 * Copyright (c) 2009 Intel Corp.

 *   Author: Huang Ying <ying.huang@intel.com>

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the Free

 * Software Foundation; either version 2 of the License, or (at your option)

 * any later version.

 *

 */



#include <linux/workqueue.h>

#include <crypto/algapi.h>

#include <crypto/crypto_wq.h>



struct workqueue_struct *kcrypto_wq;

EXPORT_SYMBOL_GPL(kcrypto_wq);



static int __init crypto_wq_init(void)

{

	kcrypto_wq = create_workqueue("crypto");

	if (unlikely(!kcrypto_wq))

		return -ENOMEM;

	return 0;

}



static void __exit crypto_wq_exit(void)

{

	destroy_workqueue(kcrypto_wq);

}



module_init(crypto_wq_init);

module_exit(crypto_wq_exit);



MODULE_LICENSE("GPL");

MODULE_DESCRIPTION("Workqueue for crypto subsystem");

include/crypto/crypto_wq.h

0 → 100644
+7 −0
Original line number Original line Diff line number Diff line 
#ifndef CRYPTO_WQ_H

#define CRYPTO_WQ_H



#include <linux/workqueue.h>



extern struct workqueue_struct *kcrypto_wq;

#endif