From patchwork Tue Dec 5 21:52:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 17585 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:bcd1:0:b0:403:3b70:6f57 with SMTP id r17csp3729637vqy; Tue, 5 Dec 2023 13:59:59 -0800 (PST) X-Google-Smtp-Source: AGHT+IGbL6TgBcSqOO9Gx67HmNmoxWTKGZST5eZPJfYSmnrO7o3YCQ+4Lk0ucuWipnDbRz/mVK6G X-Received: by 2002:a05:6358:4411:b0:16f:f32c:1d97 with SMTP id z17-20020a056358441100b0016ff32c1d97mr7450165rwc.16.1701813599673; Tue, 05 Dec 2023 13:59:59 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1701813599; cv=none; d=google.com; s=arc-20160816; b=Hxgsoex+Nk5l5PCr1qT/RIHPnUwNFrJpjg+JV26pvUC5oSBblRMupY+sFopPRh56Wa M/orwR7h6QrhUtfpj9JTd4TfakX92duj3pg9Bw0e+zxOMusMcs3pNePq/sJfh+w83WDd vN8pfS0VAAqggiyWDqcxmSozLKrxKRrDrwcHm+DZTRNnJxhD50nOZaoNwvFO9WMkmf9I zuvdTbn4+v8dukdO2z9UQOMZTTDxbZhzSkGUaSCebbDMmf6kH/XvWg4FqiO2AnBp5rlA /lQo2qYZawjEoINNcf5QfaUUVydgIa35avVwRNdP+2CL09hyEFStsBrwUsfaO4geq/i1 uRKw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:subject:cc:to:from:date:user-agent:message-id; bh=h7nSc1a3Keo+48zxkox5C2RETM5GokslSx83hDptzbY=; fh=mjDKelfe6UwtrbrQsWTm6mHxXqJJm1yC7XMGoQRRIY8=; b=bs5TA63Gp7fCzGvbik8pJ0NMV1ovm0vovJsNSRNyG2EkeRsJ7EAYSm5W7JHl3OFI+R NqLi2jwsOWtdPr0vHLd4FmaEinZgmsqu3khJ2rLEKhHTDeZYhzFRa226haT/brKp2b6m qQ5Eac+7CgkhAbEQlz2mdjpi6r5fATajDsUy7NNkEtjtxYl3M1CM+iJpw0OFFoBgFnE0 /cF0lhL4oq70yF13xNvy28x7EiY25YG4feTwwgsLd+5bRqQp8+5ZAiVd8Slp4q62F2cr ympzYBjSmLd3KyLbgJeMRGy7JcF1fBTJhn7xPNRjVSJEjTXKwmYlz9nw+51CgSG/JZev eSaA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from snail.vger.email (snail.vger.email. [23.128.96.37]) by mx.google.com with ESMTPS id f7-20020a631f07000000b005c2135c5018si5213983pgf.571.2023.12.05.13.59.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Dec 2023 13:59:59 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id 77B2E80C03B8; Tue, 5 Dec 2023 13:59:58 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232334AbjLEV7p (ORCPT + 99 others); Tue, 5 Dec 2023 16:59:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54468 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229849AbjLEV7m (ORCPT ); Tue, 5 Dec 2023 16:59:42 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1EA24D5B for ; Tue, 5 Dec 2023 13:59:43 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7FA32C433C7; Tue, 5 Dec 2023 21:59:43 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.97) (envelope-from ) id 1rAdSc-00000000PNl-1XKj; Tue, 05 Dec 2023 17:00:10 -0500 Message-ID: <20231205215208.195443981@goodmis.org> User-Agent: quilt/0.67 Date: Tue, 05 Dec 2023 16:52:08 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton Subject: [PATCH v2 0/3] tracing: Keep instance main and snapshot buffers in sync X-Spam-Status: No, score=-4.0 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE 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-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Tue, 05 Dec 2023 13:59:58 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1784480896911038577 X-GMAIL-MSGID: 1784480896911038577 Fix keeping instance buffers in sync. That is, when the main ring buffer size is updated, the size of the instance snapshot buffer also needs to be updated if it is allocated. Changes since v1: https://lore.kernel.org/all/20231205115223.5256e1a1@gandalf.local.home/ - That was just patch 3 with the change log of patch 1. That patch just needs to be ignored. Steven Rostedt (Google) (3): tracing: Always update snapshot buffer size tracing: Stop current tracer when resizing buffer tracing: Disable snapshot buffer when stopping instance tracers ---- kernel/trace/trace.c | 123 ++++++++++++++++++--------------------------------- 1 file changed, 42 insertions(+), 81 deletions(-)