Author: mav
Date: Fri Jan 17 04:11:17 2020
New Revision: 356823
URL: https://svnweb.freebsd.org/changeset/base/356823
Log:
MFC r356315: Avoid duplicate I/O statistics accounting.
Alike to geom_disk free the provider statistics structure and point GEOM
toward local statistics. It allows to save some CPU time.
Modified:
stable/12/sys/dev/md/md.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/dev/md/md.c
==============================================================================
--- stable/12/sys/dev/md/md.c Fri Jan 17 03:44:04 2020 (r356822)
+++ stable/12/sys/dev/md/md.c Fri Jan 17 04:11:17 2020 (r356823)
@@ -1310,6 +1310,8 @@ mdinit(struct md_s *sc)
gp = g_new_geomf(&g_md_class, "md%d", sc->unit);
gp->softc = sc;
pp = g_new_providerf(gp, "md%d", sc->unit);
+ devstat_remove_entry(pp->stat);
+ pp->stat = NULL;
pp->flags |= G_PF_DIRECT_SEND | G_PF_DIRECT_RECEIVE;
pp->mediasize = sc->mediasize;
pp->sectorsize = sc->sectorsize;
@@ -1325,10 +1327,11 @@ mdinit(struct md_s *sc)
}
sc->gp = gp;
sc->pp = pp;
- g_error_provider(pp, 0);
- g_topology_unlock();
sc->devstat = devstat_new_entry("md", sc->unit, sc->sectorsize,
DEVSTAT_ALL_SUPPORTED, DEVSTAT_TYPE_DIRECT, DEVSTAT_PRIORITY_MAX);
+ sc->devstat->id = pp;
+ g_error_provider(pp, 0);
+ g_topology_unlock();
}
static int
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