From patchwork Tue Jun 5 14:19:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jeff Cody X-Patchwork-Id: 10448425 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8D6F06053F for ; Tue, 5 Jun 2018 14:22:51 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7DBE529796 for ; Tue, 5 Jun 2018 14:22:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 75444296B5; Tue, 5 Jun 2018 14:22:51 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0551D297E5 for ; Tue, 5 Jun 2018 14:21:55 +0000 (UTC) Received: from localhost ([::1]:47092 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fQCqR-0006b4-3m for patchwork-qemu-devel@patchwork.kernel.org; Tue, 05 Jun 2018 10:21:55 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40613) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fQCoI-0005Pf-RY for qemu-devel@nongnu.org; Tue, 05 Jun 2018 10:19:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fQCoH-0002uQ-TH for qemu-devel@nongnu.org; Tue, 05 Jun 2018 10:19:42 -0400 Received: from mx1.redhat.com ([209.132.183.28]:33816) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fQCoD-0002rw-Pe; Tue, 05 Jun 2018 10:19:37 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 0E6777DA3F; Tue, 5 Jun 2018 14:19:37 +0000 (UTC) Received: from localhost (ovpn-116-175.phx2.redhat.com [10.3.116.175]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CCDF81062246; Tue, 5 Jun 2018 14:19:36 +0000 (UTC) From: Jeff Cody To: qemu-block@nongnu.org Date: Tue, 5 Jun 2018 10:19:33 -0400 Message-Id: <20180605141933.30169-3-jcody@redhat.com> In-Reply-To: <20180605141933.30169-1-jcody@redhat.com> References: <20180605141933.30169-1-jcody@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Tue, 05 Jun 2018 14:19:37 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 2/2] sheepdog: remove huge BSS object X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, jcody@redhat.com, qemu-devel@nongnu.org, pbonzini@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Paolo Bonzini block/sheepdog.o has a 4M static variable that is 90% of QEMU's whole .bss section. Replace it with a heap-allocated block, and make it smaller too since only the inode header is actually being used. bss size goes down from 4464280 to 269976. Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Jeff Cody Signed-off-by: Paolo Bonzini Message-Id: <20180523160721.14018-3-pbonzini@redhat.com> Signed-off-by: Jeff Cody --- block/sheepdog.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/block/sheepdog.c b/block/sheepdog.c index cfc0e28aa5..7b98725af7 100644 --- a/block/sheepdog.c +++ b/block/sheepdog.c @@ -2938,13 +2938,14 @@ static int sd_snapshot_list(BlockDriverState *bs, QEMUSnapshotInfo **psn_tab) QEMUSnapshotInfo *sn_tab = NULL; unsigned wlen, rlen; int found = 0; - static SheepdogInode inode; + SheepdogInode *inode; unsigned long *vdi_inuse; unsigned int start_nr; uint64_t hval; uint32_t vid; vdi_inuse = g_malloc(max); + inode = g_malloc(SD_INODE_HEADER_SIZE); fd = connect_to_sdog(s, &local_err); if (fd < 0) { @@ -2987,7 +2988,7 @@ static int sd_snapshot_list(BlockDriverState *bs, QEMUSnapshotInfo **psn_tab) } /* we don't need to read entire object */ - ret = read_object(fd, s->bs, (char *)&inode, + ret = read_object(fd, s->bs, (char *)inode, vid_to_vdi_oid(vid), 0, SD_INODE_HEADER_SIZE, 0, s->cache_flags); @@ -2996,17 +2997,17 @@ static int sd_snapshot_list(BlockDriverState *bs, QEMUSnapshotInfo **psn_tab) continue; } - if (!strcmp(inode.name, s->name) && is_snapshot(&inode)) { - sn_tab[found].date_sec = inode.snap_ctime >> 32; - sn_tab[found].date_nsec = inode.snap_ctime & 0xffffffff; - sn_tab[found].vm_state_size = inode.vm_state_size; - sn_tab[found].vm_clock_nsec = inode.vm_clock_nsec; + if (!strcmp(inode->name, s->name) && is_snapshot(inode)) { + sn_tab[found].date_sec = inode->snap_ctime >> 32; + sn_tab[found].date_nsec = inode->snap_ctime & 0xffffffff; + sn_tab[found].vm_state_size = inode->vm_state_size; + sn_tab[found].vm_clock_nsec = inode->vm_clock_nsec; snprintf(sn_tab[found].id_str, sizeof(sn_tab[found].id_str), - "%" PRIu32, inode.snap_id); + "%" PRIu32, inode->snap_id); pstrcpy(sn_tab[found].name, - MIN(sizeof(sn_tab[found].name), sizeof(inode.tag)), - inode.tag); + MIN(sizeof(sn_tab[found].name), sizeof(inode->tag)), + inode->tag); found++; } } @@ -3016,6 +3017,7 @@ out: *psn_tab = sn_tab; g_free(vdi_inuse); + g_free(inode); if (ret < 0) { return ret;