svn commit: r254898 - projects/camlock/sys/geom/raid

[Alexander Motin]

Author: mav
Date: Mon Aug 26 07:48:50 2013
New Revision: 254898
URL: http://svnweb.freebsd.org/changeset/base/254898

Log:
  Declare partial (receive sides only) direct dispatch support for GEOM RAID.
  
  All real work is done in separate thread, so this just allows to switch there
  easier.  System-wide this saves up to 25% of context switches per request.
  Unfortunately we can't allow direct send there due to the sxlock held during
  respective calls.

Modified:
  projects/camlock/sys/geom/raid/g_raid.c
  projects/camlock/sys/geom/raid/md_ddf.c
  projects/camlock/sys/geom/raid/md_intel.c
  projects/camlock/sys/geom/raid/md_jmicron.c
  projects/camlock/sys/geom/raid/md_nvidia.c
  projects/camlock/sys/geom/raid/md_promise.c
  projects/camlock/sys/geom/raid/md_sii.c

Modified: projects/camlock/sys/geom/raid/g_raid.c
==============================================================================
--- projects/camlock/sys/geom/raid/g_raid.c	Mon Aug 26 07:17:41 2013	(r254897)
+++ projects/camlock/sys/geom/raid/g_raid.c	Mon Aug 26 07:48:50 2013	(r254898)
@@ -792,6 +792,7 @@ g_raid_open_consumer(struct g_raid_softc
 	if (pp == NULL)
 		return (NULL);
 	cp = g_new_consumer(sc->sc_geom);
+	cp->flags |= G_CF_DIRECT_RECEIVE;
 	if (g_attach(cp, pp) != 0) {
 		g_destroy_consumer(cp);
 		return (NULL);
@@ -1673,6 +1674,7 @@ g_raid_launch_provider(struct g_raid_vol
         }
 
 	pp = g_new_providerf(sc->sc_geom, "%s", name);
+	pp->flags |= G_PF_DIRECT_RECEIVE;
 	pp->private = vol;
 	pp->mediasize = vol->v_mediasize;
 	pp->sectorsize = vol->v_sectorsize;
@@ -2247,6 +2249,7 @@ g_raid_taste(struct g_class *mp, struct 
 	 */
 	gp->orphan = g_raid_taste_orphan;
 	cp = g_new_consumer(gp);
+	cp->flags |= G_CF_DIRECT_RECEIVE;
 	g_attach(cp, pp);
 
 	geom = NULL;

Modified: projects/camlock/sys/geom/raid/md_ddf.c
==============================================================================
--- projects/camlock/sys/geom/raid/md_ddf.c	Mon Aug 26 07:17:41 2013	(r254897)
+++ projects/camlock/sys/geom/raid/md_ddf.c	Mon Aug 26 07:48:50 2013	(r254898)
@@ -2143,6 +2143,7 @@ g_raid_md_taste_ddf(struct g_raid_md_obj
 	}
 
 	rcp = g_new_consumer(geom);
+	rcp->flags |= G_CF_DIRECT_RECEIVE;
 	g_attach(rcp, pp);
 	if (g_access(rcp, 1, 1, 1) != 0)
 		; //goto fail1;

Modified: projects/camlock/sys/geom/raid/md_intel.c
==============================================================================
--- projects/camlock/sys/geom/raid/md_intel.c	Mon Aug 26 07:17:41 2013	(r254897)
+++ projects/camlock/sys/geom/raid/md_intel.c	Mon Aug 26 07:48:50 2013	(r254898)
@@ -1477,6 +1477,7 @@ search:
 	}
 
 	rcp = g_new_consumer(geom);
+	rcp->flags |= G_CF_DIRECT_RECEIVE;
 	g_attach(rcp, pp);
 	if (g_access(rcp, 1, 1, 1) != 0)
 		; //goto fail1;

Modified: projects/camlock/sys/geom/raid/md_jmicron.c
==============================================================================
--- projects/camlock/sys/geom/raid/md_jmicron.c	Mon Aug 26 07:17:41 2013	(r254897)
+++ projects/camlock/sys/geom/raid/md_jmicron.c	Mon Aug 26 07:48:50 2013	(r254898)
@@ -923,6 +923,7 @@ search:
 	}
 
 	rcp = g_new_consumer(geom);
+	rcp->flags |= G_CF_DIRECT_RECEIVE;
 	g_attach(rcp, pp);
 	if (g_access(rcp, 1, 1, 1) != 0)
 		; //goto fail1;

Modified: projects/camlock/sys/geom/raid/md_nvidia.c
==============================================================================
--- projects/camlock/sys/geom/raid/md_nvidia.c	Mon Aug 26 07:17:41 2013	(r254897)
+++ projects/camlock/sys/geom/raid/md_nvidia.c	Mon Aug 26 07:48:50 2013	(r254898)
@@ -919,6 +919,7 @@ search:
 	}
 
 	rcp = g_new_consumer(geom);
+	rcp->flags |= G_CF_DIRECT_RECEIVE;
 	g_attach(rcp, pp);
 	if (g_access(rcp, 1, 1, 1) != 0)
 		; //goto fail1;

Modified: projects/camlock/sys/geom/raid/md_promise.c
==============================================================================
--- projects/camlock/sys/geom/raid/md_promise.c	Mon Aug 26 07:17:41 2013	(r254897)
+++ projects/camlock/sys/geom/raid/md_promise.c	Mon Aug 26 07:48:50 2013	(r254898)
@@ -1176,6 +1176,7 @@ search:
 	}
 
 	rcp = g_new_consumer(geom);
+	rcp->flags |= G_CF_DIRECT_RECEIVE;
 	g_attach(rcp, pp);
 	if (g_access(rcp, 1, 1, 1) != 0)
 		; //goto fail1;

Modified: projects/camlock/sys/geom/raid/md_sii.c
==============================================================================
--- projects/camlock/sys/geom/raid/md_sii.c	Mon Aug 26 07:17:41 2013	(r254897)
+++ projects/camlock/sys/geom/raid/md_sii.c	Mon Aug 26 07:48:50 2013	(r254898)
@@ -1012,6 +1012,7 @@ search:
 	}
 
 	rcp = g_new_consumer(geom);
+	rcp->flags |= G_CF_DIRECT_RECEIVE;
 	g_attach(rcp, pp);
 	if (g_access(rcp, 1, 1, 1) != 0)
 		; //goto fail1;