From nobody Mon Feb 9 08:56:37 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1FA0AC001DB for ; Fri, 4 Aug 2023 07:32:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234327AbjHDHca (ORCPT ); Fri, 4 Aug 2023 03:32:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35108 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233944AbjHDHcD (ORCPT ); Fri, 4 Aug 2023 03:32:03 -0400 Received: from out30-132.freemail.mail.aliyun.com (out30-132.freemail.mail.aliyun.com [115.124.30.132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BDCC14EE0; Fri, 4 Aug 2023 00:31:03 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R641e4;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=16;SR=0;TI=SMTPD_---0Vp.c2KL_1691134195; Received: from localhost.localdomain(mailfrom:xueshuai@linux.alibaba.com fp:SMTPD_---0Vp.c2KL_1691134195) by smtp.aliyun-inc.com; Fri, 04 Aug 2023 15:29:56 +0800 From: Shuai Xue To: alexander.shishkin@linux.intel.com, peterz@infradead.org, james.clark@arm.com, leo.yan@linaro.org Cc: mingo@redhat.com, baolin.wang@linux.alibaba.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, nathan@kernel.org, bpf@vger.kernel.org Subject: [PATCH v4 2/2] perf record: Update docs regarding the maximum limitation of AUX area Date: Fri, 4 Aug 2023 15:29:45 +0800 Message-Id: <20230804072945.85731-3-xueshuai@linux.alibaba.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230804072945.85731-1-xueshuai@linux.alibaba.com> References: <20230804072945.85731-1-xueshuai@linux.alibaba.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The maximum AUX area is limited by the page size of the system. Update the documentation to reflect this. Signed-off-by: Shuai Xue --- tools/perf/Documentation/perf-record.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Document= ation/perf-record.txt index 680396c56bd1..b0ee7b63da0e 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -292,6 +292,9 @@ OPTIONS Also, by adding a comma, the number of mmap pages for AUX area tracing can be specified. =20 + The maximum AUX area is limited by the page size of the system. For + example with 4K pages configured, the maximum is 2GiB. + -g:: Enables call-graph (stack chain/backtrace) recording for both kernel space and user space. --=20 2.39.3