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authorPetr Mladek <pmladek@suse.com>2016-10-19 13:54:30 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2016-10-25 11:08:25 +0800
commitc4ca2b0b25814cd56665c1c8a7c6254d900a6f11 (patch)
tree25977405aa442aa6211b0daef85b3630289dbdde /crypto/crypto_engine.c
parent103600ab966a2f02d8986bbfdf87b762b1c6a06d (diff)
downloadop-kernel-dev-c4ca2b0b25814cd56665c1c8a7c6254d900a6f11.zip
op-kernel-dev-c4ca2b0b25814cd56665c1c8a7c6254d900a6f11.tar.gz
crypto: engine - Handle the kthread worker using the new API
Use the new API to create and destroy the crypto engine kthread worker. The API hides some implementation details. In particular, kthread_create_worker() allocates and initializes struct kthread_worker. It runs the kthread the right way and stores task_struct into the worker structure. kthread_destroy_worker() flushes all pending works, stops the kthread and frees the structure. This patch does not change the existing behavior except for dynamically allocating struct kthread_worker and storing only the pointer of this structure. It is compile tested only because I did not find an easy way how to run the code. Well, it should be pretty safe given the nature of the change. Signed-off-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/crypto_engine.c')
-rw-r--r--crypto/crypto_engine.c26
1 files changed, 11 insertions, 15 deletions
diff --git a/crypto/crypto_engine.c b/crypto/crypto_engine.c
index 6989ba0..f1bf341 100644
--- a/crypto/crypto_engine.c
+++ b/crypto/crypto_engine.c
@@ -47,7 +47,7 @@ static void crypto_pump_requests(struct crypto_engine *engine,
/* If another context is idling then defer */
if (engine->idling) {
- kthread_queue_work(&engine->kworker, &engine->pump_requests);
+ kthread_queue_work(engine->kworker, &engine->pump_requests);
goto out;
}
@@ -58,7 +58,7 @@ static void crypto_pump_requests(struct crypto_engine *engine,
/* Only do teardown in the thread */
if (!in_kthread) {
- kthread_queue_work(&engine->kworker,
+ kthread_queue_work(engine->kworker,
&engine->pump_requests);
goto out;
}
@@ -189,7 +189,7 @@ int crypto_transfer_cipher_request(struct crypto_engine *engine,
ret = ablkcipher_enqueue_request(&engine->queue, req);
if (!engine->busy && need_pump)
- kthread_queue_work(&engine->kworker, &engine->pump_requests);
+ kthread_queue_work(engine->kworker, &engine->pump_requests);
spin_unlock_irqrestore(&engine->queue_lock, flags);
return ret;
@@ -231,7 +231,7 @@ int crypto_transfer_hash_request(struct crypto_engine *engine,
ret = ahash_enqueue_request(&engine->queue, req);
if (!engine->busy && need_pump)
- kthread_queue_work(&engine->kworker, &engine->pump_requests);
+ kthread_queue_work(engine->kworker, &engine->pump_requests);
spin_unlock_irqrestore(&engine->queue_lock, flags);
return ret;
@@ -284,7 +284,7 @@ void crypto_finalize_cipher_request(struct crypto_engine *engine,
req->base.complete(&req->base, err);
- kthread_queue_work(&engine->kworker, &engine->pump_requests);
+ kthread_queue_work(engine->kworker, &engine->pump_requests);
}
EXPORT_SYMBOL_GPL(crypto_finalize_cipher_request);
@@ -321,7 +321,7 @@ void crypto_finalize_hash_request(struct crypto_engine *engine,
req->base.complete(&req->base, err);
- kthread_queue_work(&engine->kworker, &engine->pump_requests);
+ kthread_queue_work(engine->kworker, &engine->pump_requests);
}
EXPORT_SYMBOL_GPL(crypto_finalize_hash_request);
@@ -345,7 +345,7 @@ int crypto_engine_start(struct crypto_engine *engine)
engine->running = true;
spin_unlock_irqrestore(&engine->queue_lock, flags);
- kthread_queue_work(&engine->kworker, &engine->pump_requests);
+ kthread_queue_work(engine->kworker, &engine->pump_requests);
return 0;
}
@@ -422,11 +422,8 @@ struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool rt)
crypto_init_queue(&engine->queue, CRYPTO_ENGINE_MAX_QLEN);
spin_lock_init(&engine->queue_lock);
- kthread_init_worker(&engine->kworker);
- engine->kworker_task = kthread_run(kthread_worker_fn,
- &engine->kworker, "%s",
- engine->name);
- if (IS_ERR(engine->kworker_task)) {
+ engine->kworker = kthread_create_worker(0, "%s", engine->name);
+ if (IS_ERR(engine->kworker)) {
dev_err(dev, "failed to create crypto request pump task\n");
return NULL;
}
@@ -434,7 +431,7 @@ struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool rt)
if (engine->rt) {
dev_info(dev, "will run requests pump with realtime priority\n");
- sched_setscheduler(engine->kworker_task, SCHED_FIFO, &param);
+ sched_setscheduler(engine->kworker->task, SCHED_FIFO, &param);
}
return engine;
@@ -455,8 +452,7 @@ int crypto_engine_exit(struct crypto_engine *engine)
if (ret)
return ret;
- kthread_flush_worker(&engine->kworker);
- kthread_stop(engine->kworker_task);
+ kthread_destroy_worker(engine->kworker);
return 0;
}
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