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[2620:137:e000::1:20]) by mx.google.com with ESMTP id n21-20020a05640204d500b0051836749133si1538867edw.494.2023.06.11.22.39.58; Sun, 11 Jun 2023 22:40:25 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234759AbjFLFZI (ORCPT + 99 others); Mon, 12 Jun 2023 01:25:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231713AbjFLFZE (ORCPT ); Mon, 12 Jun 2023 01:25:04 -0400 Received: from out30-97.freemail.mail.aliyun.com (out30-97.freemail.mail.aliyun.com [115.124.30.97]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CDDDEB5; Sun, 11 Jun 2023 22:25:01 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R181e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046051;MF=xueshuai@linux.alibaba.com;NM=1;PH=DS;RN=12;SR=0;TI=SMTPD_---0VkrnYF2_1686547495; Received: from localhost.localdomain(mailfrom:xueshuai@linux.alibaba.com fp:SMTPD_---0VkrnYF2_1686547495) by smtp.aliyun-inc.com; Mon, 12 Jun 2023 13:24:57 +0800 From: Shuai Xue To: alexander.shishkin@linux.intel.com, peterz@infradead.org Cc: mingo@redhat.com, acme@kernel.org, mark.rutland@arm.com, jolsa@kernel.org, namhyung@kernel.org, irogers@google.com, adrian.hunter@intel.com, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Subject: [PATCH 0/2] Fix high-order allocations for AUX space Date: Mon, 12 Jun 2023 13:24:50 +0800 Message-Id: <20230612052452.53425-1-xueshuai@linux.alibaba.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Spam-Status: No, score=-9.9 required=5.0 tests=BAYES_00, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE,UNPARSEABLE_RELAY,USER_IN_DEF_SPF_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768474201364379156?= X-GMAIL-MSGID: =?utf-8?q?1768474201364379156?= When perf-record with large AUX area, it reveals WARNINGs with __alloc_pages. Fix with correct MAX_ORDER limit to request higher order allocations so that larger contiguous areas is allocated. Shuai Xue (2): perf/core: Bail out early if the request AUX area is out of bound perf/ring_buffer: Fix high-order allocations for AUX space with correct MAX_ORDER limit kernel/events/core.c | 10 ++++++++++ kernel/events/ring_buffer.c | 4 ++-- tools/perf/Documentation/perf-record.txt | 3 ++- 3 files changed, 14 insertions(+), 3 deletions(-)