svn commit: r258399 - head/sys/crypto/aesni

[John-Mark Gurney]

Author: jmg
Date: Wed Nov 20 20:25:27 2013
New Revision: 258399
URL: http://svnweb.freebsd.org/changeset/base/258399

Log:
  flag that the aesni driver is sync...  This means we don't waste a
  context switch just to call the done callback...  On my machine, this
  improves geli/gzero decrypt performance by ~27% from 550MB/sec to
  ~700MB/sec...
  
  MFC after:	3 days

Modified:
  head/sys/crypto/aesni/aesni.c

Modified: head/sys/crypto/aesni/aesni.c
==============================================================================
--- head/sys/crypto/aesni/aesni.c	Wed Nov 20 20:24:59 2013	(r258398)
+++ head/sys/crypto/aesni/aesni.c	Wed Nov 20 20:25:27 2013	(r258399)
@@ -92,7 +92,8 @@ aesni_attach(device_t dev)
 	sc = device_get_softc(dev);
 	TAILQ_INIT(&sc->sessions);
 	sc->sid = 1;
-	sc->cid = crypto_get_driverid(dev, CRYPTOCAP_F_HARDWARE);
+	sc->cid = crypto_get_driverid(dev,
+	    CRYPTOCAP_F_HARDWARE|CRYPTOCAP_F_SYNC);
 	if (sc->cid < 0) {
 		device_printf(dev, "Could not get crypto driver id.\n");
 		return (ENOMEM);