From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5658EC43381 for ; Wed, 20 Mar 2019 19:03:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 35EF820850 for ; Wed, 20 Mar 2019 19:03:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726366AbfCTTDG (ORCPT ); Wed, 20 Mar 2019 15:03:06 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:42198 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725988AbfCTTDF (ORCPT ); Wed, 20 Mar 2019 15:03:05 -0400 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x2KIrfnx005214 for ; Wed, 20 Mar 2019 15:03:04 -0400 Received: from e06smtp03.uk.ibm.com (e06smtp03.uk.ibm.com [195.75.94.99]) by mx0b-001b2d01.pphosted.com with ESMTP id 2rbu2eruft-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 20 Mar 2019 15:03:03 -0400 Received: from localhost by e06smtp03.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 20 Mar 2019 19:02:56 -0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x2KJ2xU559441370 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 20 Mar 2019 19:02:59 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 03D3852054; Wed, 20 Mar 2019 19:02:59 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTPS id CAC005204E; Wed, 20 Mar 2019 19:02:58 +0000 (GMT) From: Julian Wiedmann To: David Miller Cc: , Julian Wiedmann , Wei Wang Subject: [PATCH net-next] net: dst: remove gc leftovers Date: Wed, 20 Mar 2019 20:02:56 +0100 X-Mailer: git-send-email 2.16.4 X-TM-AS-GCONF: 00 x-cbid: 19032019-0012-0000-0000-000003054002 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19032019-0013-0000-0000-0000213C54A5 Message-Id: <20190320190256.3316-1-jwi@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-03-20_11:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1903200137 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Get rid of some obsolete gc-related documentation and macros that were missed in commit 5b7c9a8ff828 ("net: remove dst gc related code"). CC: Wei Wang Signed-off-by: Julian Wiedmann --- one more time, with cc netdev... include/net/dst.h | 11 ----------- net/core/dst.c | 17 ----------------- net/ipv4/route.c | 2 +- 3 files changed, 1 insertion(+), 29 deletions(-) diff --git a/include/net/dst.h b/include/net/dst.h index 6cf0870414c7..12b31c602cb0 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -19,17 +19,6 @@ #include #include -#define DST_GC_MIN (HZ/10) -#define DST_GC_INC (HZ/2) -#define DST_GC_MAX (120*HZ) - -/* Each dst_entry has reference count and sits in some parent list(s). - * When it is removed from parent list, it is "freed" (dst_free). - * After this it enters dead state (dst->obsolete > 0) and if its refcnt - * is zero, it can be destroyed immediately, otherwise it is added - * to gc list and garbage collector periodically checks the refcnt. - */ - struct sk_buff; struct dst_entry { diff --git a/net/core/dst.c b/net/core/dst.c index a263309df115..1f13d90cd0e4 100644 --- a/net/core/dst.c +++ b/net/core/dst.c @@ -26,23 +26,6 @@ #include #include -/* - * Theory of operations: - * 1) We use a list, protected by a spinlock, to add - * new entries from both BH and non-BH context. - * 2) In order to keep spinlock held for a small delay, - * we use a second list where are stored long lived - * entries, that are handled by the garbage collect thread - * fired by a workqueue. - * 3) This list is guarded by a mutex, - * so that the gc_task and dst_dev_event() can be synchronized. - */ - -/* - * We want to keep lock & list close together - * to dirty as few cache lines as possible in __dst_free(). - * As this is not a very strong hint, we dont force an alignment on SMP. - */ int dst_discard_out(struct net *net, struct sock *sk, struct sk_buff *skb) { kfree_skb(skb); diff --git a/net/ipv4/route.c b/net/ipv4/route.c index a5da63e5faa2..14c7fdacaa72 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1176,7 +1176,7 @@ static struct dst_entry *ipv4_dst_check(struct dst_entry *dst, u32 cookie) * * When a PMTU/redirect information update invalidates a route, * this is indicated by setting obsolete to DST_OBSOLETE_KILL or - * DST_OBSOLETE_DEAD by dst_free(). + * DST_OBSOLETE_DEAD. */ if (dst->obsolete != DST_OBSOLETE_FORCE_CHK || rt_is_expired(rt)) return NULL; -- 2.16.4