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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21F7DC433EF for ; Fri, 15 Oct 2021 18:05:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 009F46120D for ; Fri, 15 Oct 2021 18:05:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234881AbhJOSHO (ORCPT ); Fri, 15 Oct 2021 14:07:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50156 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232557AbhJOSHN (ORCPT ); Fri, 15 Oct 2021 14:07:13 -0400 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF842C061570; Fri, 15 Oct 2021 11:05:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=iWFwLZtUtGK6QLeN9kwkzrG0DnPld05nUJlKzTSNq1M=; b=TKkIy9uEfgJwhj+gTY4uzfwmax 0baqH8O8KrNb7Doua0roTYth1ckXfoqjJX8Hv3nGZY1RCjvoWMPFgBJ34IchV6bUKqVwvl6mZ37xR KPcdgndusraTnnK1v5Rfu6CofOx2h1PE0cxZ76Hd9WMDzAjpt32VjEZ2sSVF0URwEL0NThy7DPrlx EykTH3PUtC5GXcI4Hz32VKVum7ZMTccNVuPV95N0AMVWs+C5ILIINZVLzx+Em8f5rR4g0d4WKFsdq YD7XzC33MY60aXEZ1XypRY552W2gWeIrYFpp362bmOro2661TWvpH2L081WYfpvK81qTIbzl1CX8U aGpOAyTg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=worktop.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mbRZF-00A2dk-VJ; Fri, 15 Oct 2021 18:04:30 +0000 Received: by worktop.programming.kicks-ass.net (Postfix, from userid 1000) id 8542C9857C7; Fri, 15 Oct 2021 20:04:29 +0200 (CEST) Date: Fri, 15 Oct 2021 20:04:29 +0200 From: Peter Zijlstra To: Steven Rostedt Cc: LKML , Ingo Molnar , "James E.J. Bottomley" , Helge Deller , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Paul Walmsley , Palmer Dabbelt , Albert Ou , Thomas Gleixner , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Josh Poimboeuf , Jiri Kosina , Miroslav Benes , Petr Mladek , Joe Lawrence , Colin Ian King , Masami Hiramatsu , Nicholas Piggin , Jisheng Zhang , linux-csky@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, live-patching@vger.kernel.org, =?utf-8?B?546L6LSH?= , Guo Ren Subject: Re: [PATCH] tracing: Have all levels of checks prevent recursion Message-ID: <20211015180429.GK174703@worktop.programming.kicks-ass.net> References: <20211015110035.14813389@gandalf.local.home> <20211015161702.GF174703@worktop.programming.kicks-ass.net> <20211015133504.6c0a9fcc@gandalf.local.home> <20211015135806.72d1af23@gandalf.local.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211015135806.72d1af23@gandalf.local.home> Precedence: bulk List-ID: X-Mailing-List: linux-csky@vger.kernel.org On Fri, Oct 15, 2021 at 01:58:06PM -0400, Steven Rostedt wrote: > Something like this: I think having one copy of that in a header is better than having 3 copies. But yes, something along them lines. 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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 06DEFC433F5 for ; Fri, 15 Oct 2021 18:04:45 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B57D461037 for ; Fri, 15 Oct 2021 18:04:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B57D461037 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=u8ZP0CAxifCZFpFSLuJ9o1qZQYtIvl1rYlPA8yC8jS4=; b=kN9pWmF1E316pp PcZd1Jas1j2cNSPCsJfvE1TgEDdG+kNG6Rgwf/eGXd6n5tzOGVAJbLHSQhwOS7WyAnQ96GJFN95WX nc9S4io2r+xH2YeE/Ya8U3zqeK+WlIoEugafmn7G7k/3PPED5Fg1hmxeXzWj0c52tAMEtNMULTB8Z q+G8JH//RnDPnSIDr6ld8IvL1Sne0C56V5+f2BJNxWsf6MMyktZf/4/xB5gMxxNTJM7CFTVqsl1oq LYN/ueIri/A4BNA2lVbmKpqYyVaz9ijZl+eRWC5TjcDwaE86TrZ0Rq0u7IedhkyHcM2CeLlIMtq5e 4ewOBBzpaOXbjTLo/6Tw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mbRZM-008OFd-CX; Fri, 15 Oct 2021 18:04:36 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mbRZL-008OFG-9H for linux-riscv@bombadil.infradead.org; Fri, 15 Oct 2021 18:04:35 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=iWFwLZtUtGK6QLeN9kwkzrG0DnPld05nUJlKzTSNq1M=; b=TKkIy9uEfgJwhj+gTY4uzfwmax 0baqH8O8KrNb7Doua0roTYth1ckXfoqjJX8Hv3nGZY1RCjvoWMPFgBJ34IchV6bUKqVwvl6mZ37xR KPcdgndusraTnnK1v5Rfu6CofOx2h1PE0cxZ76Hd9WMDzAjpt32VjEZ2sSVF0URwEL0NThy7DPrlx EykTH3PUtC5GXcI4Hz32VKVum7ZMTccNVuPV95N0AMVWs+C5ILIINZVLzx+Em8f5rR4g0d4WKFsdq YD7XzC33MY60aXEZ1XypRY552W2gWeIrYFpp362bmOro2661TWvpH2L081WYfpvK81qTIbzl1CX8U aGpOAyTg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=worktop.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mbRZF-00A2dk-VJ; Fri, 15 Oct 2021 18:04:30 +0000 Received: by worktop.programming.kicks-ass.net (Postfix, from userid 1000) id 8542C9857C7; Fri, 15 Oct 2021 20:04:29 +0200 (CEST) Date: Fri, 15 Oct 2021 20:04:29 +0200 From: Peter Zijlstra To: Steven Rostedt Cc: LKML , Ingo Molnar , "James E.J. Bottomley" , Helge Deller , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Paul Walmsley , Palmer Dabbelt , Albert Ou , Thomas Gleixner , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Josh Poimboeuf , Jiri Kosina , Miroslav Benes , Petr Mladek , Joe Lawrence , Colin Ian King , Masami Hiramatsu , Nicholas Piggin , Jisheng Zhang , linux-csky@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, live-patching@vger.kernel.org, =?utf-8?B?546L6LSH?= , Guo Ren Subject: Re: [PATCH] tracing: Have all levels of checks prevent recursion Message-ID: <20211015180429.GK174703@worktop.programming.kicks-ass.net> References: <20211015110035.14813389@gandalf.local.home> <20211015161702.GF174703@worktop.programming.kicks-ass.net> <20211015133504.6c0a9fcc@gandalf.local.home> <20211015135806.72d1af23@gandalf.local.home> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20211015135806.72d1af23@gandalf.local.home> X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Fri, Oct 15, 2021 at 01:58:06PM -0400, Steven Rostedt wrote: > Something like this: I think having one copy of that in a header is better than having 3 copies. But yes, something along them lines. _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv 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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9045BC433F5 for ; Fri, 15 Oct 2021 18:05:46 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EA4256121F for ; Fri, 15 Oct 2021 18:05:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org EA4256121F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4HWDhm2vVDz3cBN for ; Sat, 16 Oct 2021 05:05:44 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=desiato.20200630 header.b=TKkIy9uE; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=infradead.org (client-ip=2001:8b0:10b:1:d65d:64ff:fe57:4e05; helo=desiato.infradead.org; envelope-from=peterz@infradead.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=desiato.20200630 header.b=TKkIy9uE; dkim-atps=neutral Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4HWDgw5cYtz2yNp for ; Sat, 16 Oct 2021 05:04:58 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=iWFwLZtUtGK6QLeN9kwkzrG0DnPld05nUJlKzTSNq1M=; b=TKkIy9uEfgJwhj+gTY4uzfwmax 0baqH8O8KrNb7Doua0roTYth1ckXfoqjJX8Hv3nGZY1RCjvoWMPFgBJ34IchV6bUKqVwvl6mZ37xR KPcdgndusraTnnK1v5Rfu6CofOx2h1PE0cxZ76Hd9WMDzAjpt32VjEZ2sSVF0URwEL0NThy7DPrlx EykTH3PUtC5GXcI4Hz32VKVum7ZMTccNVuPV95N0AMVWs+C5ILIINZVLzx+Em8f5rR4g0d4WKFsdq YD7XzC33MY60aXEZ1XypRY552W2gWeIrYFpp362bmOro2661TWvpH2L081WYfpvK81qTIbzl1CX8U aGpOAyTg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=worktop.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mbRZF-00A2dk-VJ; Fri, 15 Oct 2021 18:04:30 +0000 Received: by worktop.programming.kicks-ass.net (Postfix, from userid 1000) id 8542C9857C7; Fri, 15 Oct 2021 20:04:29 +0200 (CEST) Date: Fri, 15 Oct 2021 20:04:29 +0200 From: Peter Zijlstra To: Steven Rostedt Subject: Re: [PATCH] tracing: Have all levels of checks prevent recursion Message-ID: <20211015180429.GK174703@worktop.programming.kicks-ass.net> References: <20211015110035.14813389@gandalf.local.home> <20211015161702.GF174703@worktop.programming.kicks-ass.net> <20211015133504.6c0a9fcc@gandalf.local.home> <20211015135806.72d1af23@gandalf.local.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211015135806.72d1af23@gandalf.local.home> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?utf-8?B?546L6LSH?= , Paul Walmsley , "James E.J. Bottomley" , Paul Mackerras , Jisheng Zhang , "H. Peter Anvin" , live-patching@vger.kernel.org, linux-riscv@lists.infradead.org, Miroslav Benes , Joe Lawrence , Helge Deller , x86@kernel.org, linux-csky@vger.kernel.org, Ingo Molnar , Petr Mladek , Albert Ou , Jiri Kosina , Nicholas Piggin , Borislav Petkov , Josh Poimboeuf , Thomas Gleixner , linux-parisc@vger.kernel.org, LKML , Palmer Dabbelt , Masami Hiramatsu , Guo Ren , Colin Ian King , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Fri, Oct 15, 2021 at 01:58:06PM -0400, Steven Rostedt wrote: > Something like this: I think having one copy of that in a header is better than having 3 copies. But yes, something along them lines.