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[23.128.96.19]) by mx.google.com with ESMTPS id c14-20020a170902d48e00b00153b2d1663fsi5818832plg.583.2022.04.22.15.04.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Apr 2022 15:04:27 -0700 (PDT) Received-SPF: softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) client-ip=23.128.96.19; Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5D33E36451F; Fri, 22 Apr 2022 13:11:28 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1449586AbiDVP65 (ORCPT + 99 others); Fri, 22 Apr 2022 11:58:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33064 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234331AbiDVP6z (ORCPT ); Fri, 22 Apr 2022 11:58:55 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3BAF45DA57 for ; Fri, 22 Apr 2022 08:56:02 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id BADF561FE2 for ; Fri, 22 Apr 2022 15:56:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C4D16C385A4; Fri, 22 Apr 2022 15:55:58 +0000 (UTC) Date: Fri, 22 Apr 2022 11:55:57 -0400 From: Steven Rostedt To: Peter Zijlstra Cc: Delyan Kratunov , "valentin.schneider@arm.com" , "bigeasy@linutronix.de" , "dietmar.eggemann@arm.com" , "keescook@chromium.org" , "andrii@kernel.org" , "vincent.guittot@linaro.org" , "akpm@linux-foundation.org" , "mingo@kernel.org" , "linux-kernel@vger.kernel.org" , "rdunlap@infradead.org" , "Kenta.Tada@sony.com" , "adharmap@quicinc.com" , "tglx@linutronix.de" , "bristot@redhat.com" , "ebiederm@xmission.com" , "ast@kernel.org" , "legion@kernel.org" , "ed.tsai@mediatek.com" , "u.kleine-koenig@pengutronix.de" , "juri.lelli@redhat.com" , "x86@kernel.org" Subject: Re: [PATCH] sched/tracing: append prev_state to tp args instead Message-ID: <20220422115557.0dc5cd86@gandalf.local.home> In-Reply-To: <20220422110903.GW2731@worktop.programming.kicks-ass.net> References: <20220120162520.570782-1-valentin.schneider@arm.com> <93a20759600c05b6d9e4359a1517c88e06b44834.camel@fb.com> <20220422110903.GW2731@worktop.programming.kicks-ass.net> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RDNS_NONE, SPF_HELO_NONE autolearn=no 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 On Fri, 22 Apr 2022 13:09:03 +0200 Peter Zijlstra wrote: > If bpf wants to ride on them, it needs to suffer the pain of doing so. And I constantly hear that BPF is not an ABI, and is not guaranteed to work from one kernel version to the next. -- Steve