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=-13.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 87EAEC47426 for ; Wed, 30 Sep 2020 04:28:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 532842074B for ; Wed, 30 Sep 2020 04:28:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="lX5qqy6Z" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725814AbgI3E2Y (ORCPT ); Wed, 30 Sep 2020 00:28:24 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:45544 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725497AbgI3E2X (ORCPT ); Wed, 30 Sep 2020 00:28:23 -0400 Received: from pps.filterd (m0109331.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 08U4SJQE021027 for ; Tue, 29 Sep 2020 21:28:22 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=facebook; bh=j+aGWqXDOldytCFdjd9NV8pF/t7bMbcn1o34Y9uH98w=; b=lX5qqy6ZoLMkT9pHC81FKr0NVFdMyis6Cj1O6Ykjvf7lGuUT4GLR5Nl6tEv1h6riQ2a5 n1ub99axGCtygDbrmkgl98eMnWKfR4+55cQ48IskllhsO65ljBjCpSX4YYg+dRhx7Nby 10GF8NT3aaXRVEXzqyNX03UzEAKlFnuDZHY= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 33t3fhh1nv-7 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 29 Sep 2020 21:28:22 -0700 Received: from intmgw001.03.ash8.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::d) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 29 Sep 2020 21:28:08 -0700 Received: by devbig012.ftw2.facebook.com (Postfix, from userid 137359) id 320DE2EC77F1; Tue, 29 Sep 2020 21:28:07 -0700 (PDT) From: Andrii Nakryiko To: CC: , Andrii Nakryiko Subject: [PATCH dwarves 07/11] btf_encoder: discard CUs after BTF encoding Date: Tue, 29 Sep 2020 21:27:38 -0700 Message-ID: <20200930042742.2525310-8-andriin@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200930042742.2525310-1-andriin@fb.com> References: <20200930042742.2525310-1-andriin@fb.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-09-30_01:2020-09-29,2020-09-30 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 impostorscore=0 spamscore=0 mlxscore=0 malwarescore=0 bulkscore=0 lowpriorityscore=0 phishscore=0 adultscore=0 clxscore=1015 priorityscore=1501 mlxlogscore=251 suspectscore=13 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009300033 X-FB-Internal: deliver Precedence: bulk List-ID: X-Mailing-List: dwarves@vger.kernel.org When doing BTF encoding/deduping, DWARF CUs are never used after BTF enco= ding is done, so there is no point in wasting memory and keeping them in memor= y. So discard them immediately. Signed-off-by: Andrii Nakryiko --- pahole.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/pahole.c b/pahole.c index ed87529ce65d..745f77ffe430 100644 --- a/pahole.c +++ b/pahole.c @@ -2368,7 +2368,7 @@ static enum load_steal_kind pahole_stealer(struct c= u *cu, fprintf(stderr, "Encountered error while encoding BTF.\n"); exit(1); } - return LSK__KEEPIT; + return LSK__DELETE; } =20 if (ctf_encode) { --=20 2.24.1