From: Alex Hornung <ahornung@gmail.com>
Date: Tue, 24 Aug 2010 06:54:09 +0000 (+0100)
Subject: opencrypto - Only yield for cryptosoft
X-Git-Tag: v2.9.0~416
X-Git-Url: https://gitweb.dragonflybsd.org/~tuxillo/dragonfly.git/commitdiff_plain/c5fcbac78c1afd853c4f736423750671d4988c38

opencrypto - Only yield for cryptosoft

* There's no need to yield the CPU when doing hardware-assisted
  crypto. Move the lwkt_yield()s into cryptosoft.
---

diff --git a/sys/opencrypto/crypto.c b/sys/opencrypto/crypto.c
index cbc6bee690..7e34357c80 100644
--- a/sys/opencrypto/crypto.c
+++ b/sys/opencrypto/crypto.c
@@ -830,7 +830,6 @@ crypto_dispatch(struct cryptop *crp)
 		KASSERT(cap != NULL, ("%s: Driver disappeared.", __func__));
 		if (!cap->cc_qblocked) {
 			result = crypto_invoke(cap, crp, 0);
-			lwkt_yield();
 			if (result != ERESTART)
 				return (result);
 			/*
@@ -1363,7 +1362,6 @@ crypto_proc(void *arg)
 
 			CRYPTO_Q_UNLOCK(tdinfo);
 			result = crypto_invoke(cap, submit, hint);
-			lwkt_yield();
 			CRYPTO_Q_LOCK(tdinfo);
 
 			if (result == ERESTART) {
diff --git a/sys/opencrypto/cryptosoft.c b/sys/opencrypto/cryptosoft.c
index e228178959..d940a5bf30 100644
--- a/sys/opencrypto/cryptosoft.c
+++ b/sys/opencrypto/cryptosoft.c
@@ -1129,6 +1129,7 @@ swcr_process(device_t dev, struct cryptop *crp, int hint)
 
 done:
 	crypto_done(crp);
+	lwkt_yield();
 	return 0;
 }