Author: ken Date: Tue Sep 15 00:15:24 2009 New Revision: 197208 URL: http://svn.freebsd.org/changeset/base/197208
Log: Fix some instances where CAM rescans get hung up or take a long time to complete. Also, allow xpt_rescan() to rescan a LUN instead of a full bus. MFC after: 3 days Sponsored by: Copan Systems, Inc. Modified: head/sys/cam/cam_xpt.c Modified: head/sys/cam/cam_xpt.c ============================================================================== --- head/sys/cam/cam_xpt.c Mon Sep 14 23:46:40 2009 (r197207) +++ head/sys/cam/cam_xpt.c Tue Sep 15 00:15:24 2009 (r197208) @@ -794,8 +794,9 @@ xpt_scanner_thread(void *dummy) * processed. */ xpt_lock_buses(); - msleep(&xsoftc.ccb_scanq, &xsoftc.xpt_topo_lock, PRIBIO, - "ccb_scanq", 0); + if (TAILQ_EMPTY(&xsoftc.ccb_scanq)) + msleep(&xsoftc.ccb_scanq, &xsoftc.xpt_topo_lock, PRIBIO, + "ccb_scanq", 0); TAILQ_INIT(&queue); TAILQ_CONCAT(&queue, &xsoftc.ccb_scanq, sim_links.tqe); xpt_unlock_buses(); @@ -806,9 +807,12 @@ xpt_scanner_thread(void *dummy) sim = ccb->ccb_h.path->bus->sim; CAM_SIM_LOCK(sim); - ccb->ccb_h.func_code = XPT_SCAN_BUS; + if( ccb->ccb_h.path->target->target_id == CAM_TARGET_WILDCARD ) + ccb->ccb_h.func_code = XPT_SCAN_BUS; + else + ccb->ccb_h.func_code = XPT_SCAN_LUN; ccb->ccb_h.cbfcnp = xptdone; - xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, 5); + xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, 1); cam_periph_runccb(ccb, NULL, 0, 0, NULL); xpt_free_path(ccb->ccb_h.path); xpt_free_ccb(ccb); @@ -828,6 +832,7 @@ xpt_rescan(union ccb *ccb) xpt_lock_buses(); TAILQ_FOREACH(hdr, &xsoftc.ccb_scanq, sim_links.tqe) { if (xpt_path_comp(hdr->path, ccb->ccb_h.path) == 0) { + wakeup(&xsoftc.ccb_scanq); xpt_unlock_buses(); xpt_print(ccb->ccb_h.path, "rescan already queued\n"); xpt_free_path(ccb->ccb_h.path); _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"