From owner-svn-src-all@FreeBSD.ORG Mon Nov 7 22:11:39 2011 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 186231065674; Mon, 7 Nov 2011 22:11:39 +0000 (UTC) (envelope-from yongari@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id E34A58FC1C; Mon, 7 Nov 2011 22:11:38 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id pA7MBcTb098539; Mon, 7 Nov 2011 22:11:38 GMT (envelope-from yongari@svn.freebsd.org) Received: (from yongari@localhost) by svn.freebsd.org (8.14.4/8.14.4/Submit) id pA7MBcHR098537; Mon, 7 Nov 2011 22:11:38 GMT (envelope-from yongari@svn.freebsd.org) Message-Id: <201111072211.pA7MBcHR098537@svn.freebsd.org> From: Pyun YongHyeon Date: Mon, 7 Nov 2011 22:11:38 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r227318 - head/sys/dev/ti X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Nov 2011 22:11:39 -0000 Author: yongari Date: Mon Nov 7 22:11:38 2011 New Revision: 227318 URL: http://svn.freebsd.org/changeset/base/227318 Log: Track which ring was updated in RX handler and update only modified ring. This should reduce unnecessary register accesses. Modified: head/sys/dev/ti/if_ti.c Modified: head/sys/dev/ti/if_ti.c ============================================================================== --- head/sys/dev/ti/if_ti.c Mon Nov 7 21:16:19 2011 (r227317) +++ head/sys/dev/ti/if_ti.c Mon Nov 7 22:11:38 2011 (r227318) @@ -2647,15 +2647,17 @@ ti_rxeof(struct ti_softc *sc) struct ifnet *ifp; bus_dmamap_t map; struct ti_cmd_desc cmd; + int jumbocnt, minicnt, stdcnt; TI_LOCK_ASSERT(sc); ifp = sc->ti_ifp; + jumbocnt = minicnt = stdcnt = 0; while (sc->ti_rx_saved_considx != sc->ti_return_prodidx.ti_idx) { struct ti_rx_desc *cur_rx; - struct mbuf *m = NULL; uint32_t rxidx; + struct mbuf *m = NULL; uint16_t vlan_tag = 0; int have_tag = 0; @@ -2670,7 +2672,7 @@ ti_rxeof(struct ti_softc *sc) } if (cur_rx->ti_flags & TI_BDFLAG_JUMBO_RING) { - + jumbocnt++; TI_INC(sc->ti_jumbo, TI_JUMBO_RX_RING_CNT); m = sc->ti_cdata.ti_rx_jumbo_chain[rxidx]; sc->ti_cdata.ti_rx_jumbo_chain[rxidx] = NULL; @@ -2700,6 +2702,7 @@ ti_rxeof(struct ti_softc *sc) m_adj(m, cur_rx->ti_len - m->m_pkthdr.len); #endif /* TI_PRIVATE_JUMBOS */ } else if (cur_rx->ti_flags & TI_BDFLAG_MINI_RING) { + minicnt++; TI_INC(sc->ti_mini, TI_MINI_RX_RING_CNT); m = sc->ti_cdata.ti_rx_mini_chain[rxidx]; sc->ti_cdata.ti_rx_mini_chain[rxidx] = NULL; @@ -2719,6 +2722,7 @@ ti_rxeof(struct ti_softc *sc) } m->m_len = cur_rx->ti_len; } else { + stdcnt++; TI_INC(sc->ti_std, TI_STD_RX_RING_CNT); m = sc->ti_cdata.ti_rx_std_chain[rxidx]; sc->ti_cdata.ti_rx_std_chain[rxidx] = NULL; @@ -2774,9 +2778,12 @@ ti_rxeof(struct ti_softc *sc) CSR_WRITE_4(sc, TI_GCR_RXRETURNCONS_IDX, sc->ti_rx_saved_considx); - TI_UPDATE_STDPROD(sc, sc->ti_std); - TI_UPDATE_MINIPROD(sc, sc->ti_mini); - TI_UPDATE_JUMBOPROD(sc, sc->ti_jumbo); + if (stdcnt > 0) + TI_UPDATE_STDPROD(sc, sc->ti_std); + if (minicnt > 0) + TI_UPDATE_MINIPROD(sc, sc->ti_mini); + if (jumbocnt > 0) + TI_UPDATE_JUMBOPROD(sc, sc->ti_jumbo); } static void