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>

1 files changed, 2 insertions, 1 deletions

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;