From owner-svn-src-head@freebsd.org Mon Jan 9 16:21:07 2017 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9761BCA75BB; Mon, 9 Jan 2017 16:21:07 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 59CD01D1F; Mon, 9 Jan 2017 16:21:07 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v09GL6U9062659; Mon, 9 Jan 2017 16:21:06 GMT (envelope-from mav@FreeBSD.org) Received: (from mav@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id v09GL63o062398; Mon, 9 Jan 2017 16:21:06 GMT (envelope-from mav@FreeBSD.org) Message-Id: <201701091621.v09GL63o062398@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mav set sender to mav@FreeBSD.org using -f From: Alexander Motin Date: Mon, 9 Jan 2017 16:21:06 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r311787 - head/sys/cam/ctl X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Jan 2017 16:21:07 -0000 Author: mav Date: Mon Jan 9 16:21:06 2017 New Revision: 311787 URL: https://svnweb.freebsd.org/changeset/base/311787 Log: Allocate memory for prevent flags only for removable LUs. This array takes 64KB of RAM now, that was more then half of struct ctl_lun size. If at some point we support more ports, this may need another tune. MFC after: 2 weeks Modified: head/sys/cam/ctl/ctl.c head/sys/cam/ctl/ctl_private.h Modified: head/sys/cam/ctl/ctl.c ============================================================================== --- head/sys/cam/ctl/ctl.c Mon Jan 9 14:13:47 2017 (r311786) +++ head/sys/cam/ctl/ctl.c Mon Jan 9 16:21:06 2017 (r311787) @@ -4585,6 +4585,10 @@ ctl_alloc_lun(struct ctl_softc *ctl_soft lun->ie_reported = 1; callout_init_mtx(&lun->ie_callout, &lun->lun_lock, 0); ctl_tpc_lun_init(lun); + if (lun->flags & CTL_LUN_REMOVABLE) { + lun->prevent = malloc((CTL_MAX_INITIATORS + 31) / 32 * 4, + M_CTL, M_WAITOK); + } /* * Initialize the mode and log page index. @@ -4666,6 +4670,7 @@ ctl_free_lun(struct ctl_lun *lun) for (i = 0; i < CTL_MAX_PORTS; i++) free(lun->pr_keys[i], M_CTL); free(lun->write_buffer, M_CTL); + free(lun->prevent, M_CTL); if (lun->flags & CTL_LUN_MALLOCED) free(lun, M_CTL); @@ -5276,7 +5281,7 @@ ctl_prevent_allow(struct ctl_scsiio *cts cdb = (struct scsi_prevent *)ctsio->cdb; - if ((lun->flags & CTL_LUN_REMOVABLE) == 0) { + if ((lun->flags & CTL_LUN_REMOVABLE) == 0 || lun->prevent == NULL) { ctl_set_invalid_opcode(ctsio); ctl_done((union ctl_io *)ctsio); return (CTL_RETVAL_COMPLETE); @@ -11872,8 +11877,10 @@ ctl_do_lun_reset(struct ctl_lun *lun, un ctl_clear_mask(lun->have_ca, i); #endif lun->prevent_count = 0; - for (i = 0; i < CTL_MAX_INITIATORS; i++) - ctl_clear_mask(lun->prevent, i); + if (lun->prevent) { + for (i = 0; i < CTL_MAX_INITIATORS; i++) + ctl_clear_mask(lun->prevent, i); + } mtx_unlock(&lun->lun_lock); return (0); @@ -12019,7 +12026,7 @@ ctl_i_t_nexus_reset(union ctl_io *io) #endif if ((lun->flags & CTL_LUN_RESERVED) && (lun->res_idx == initidx)) lun->flags &= ~CTL_LUN_RESERVED; - if (ctl_is_set(lun->prevent, initidx)) { + if (lun->prevent && ctl_is_set(lun->prevent, initidx)) { ctl_clear_mask(lun->prevent, initidx); lun->prevent_count--; } Modified: head/sys/cam/ctl/ctl_private.h ============================================================================== --- head/sys/cam/ctl/ctl_private.h Mon Jan 9 14:13:47 2017 (r311786) +++ head/sys/cam/ctl/ctl_private.h Mon Jan 9 16:21:06 2017 (r311787) @@ -412,7 +412,7 @@ struct ctl_lun { uint32_t pr_res_idx; uint8_t pr_res_type; int prevent_count; - uint32_t prevent[(CTL_MAX_INITIATORS+31)/32]; + uint32_t *prevent; uint8_t *write_buffer; struct ctl_devid *lun_devid; TAILQ_HEAD(tpc_lists, tpc_list) tpc_lists;