From c73b7d02da9bfb4fadafc118a24ee868708839b6 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Tue, 4 Jan 2011 15:38:44 +1100
Subject: [PATCH] crypto: mark crypto workqueues CPU_INTENSIVE
kcrypto_wq and pcrypt->wq's are used to run ciphers and may consume
considerable amount of CPU cycles. Mark both as CPU_INTENSIVE so that
they don't block other work items.
As the workqueues are primarily used to burn CPU cycles, concurrency
levels shouldn't matter much and are left at 1. A higher value may be
beneficial and needs investigation.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
crypto/crypto_wq.c | 3 ++-
crypto/pcrypt.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/crypto/crypto_wq.c b/crypto/crypto_wq.c
index fdcf6248f152..b980ee1af459 100644
--- a/crypto/crypto_wq.c
+++ b/crypto/crypto_wq.c
@@ -20,7 +20,8 @@ EXPORT_SYMBOL_GPL(kcrypto_wq);
static int __init crypto_wq_init(void)
{
- kcrypto_wq = create_workqueue("crypto");
+ kcrypto_wq = alloc_workqueue("crypto",
+ WQ_MEM_RECLAIM | WQ_CPU_INTENSIVE, 1);
if (unlikely(!kcrypto_wq))
return -ENOMEM;
return 0;
diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c
index de3078215fe6..806635f5d331 100644
--- a/crypto/pcrypt.c
+++ b/crypto/pcrypt.c
@@ -455,7 +455,8 @@ static int pcrypt_init_padata(struct padata_pcrypt *pcrypt,
get_online_cpus();
- pcrypt->wq = create_workqueue(name);
+ pcrypt->wq = alloc_workqueue(name,
+ WQ_MEM_RECLAIM | WQ_CPU_INTENSIVE, 1);
if (!pcrypt->wq)
goto err;