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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 4FC72C433F5 for ; Tue, 11 Oct 2022 20:42:29 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Mn74z4q6Hz3dqp for ; Wed, 12 Oct 2022 07:42:27 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=2604:1380:4601:e00::1; helo=ams.source.kernel.org; envelope-from=srs0=y8wv=2m=goodmis.org=rostedt@kernel.org; receiver=) Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Mn74P07dVz2xG9 for ; Wed, 12 Oct 2022 07:41:56 +1100 (AEDT) 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 ams.source.kernel.org (Postfix) with ESMTPS id 36325B80F9B; Tue, 11 Oct 2022 20:41:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E8570C433C1; Tue, 11 Oct 2022 20:41:44 +0000 (UTC) Date: Tue, 11 Oct 2022 16:41:43 -0400 From: Steven Rostedt To: Valentin Schneider Subject: Re: [RFC PATCH 0/5] Generic IPI sending tracepoint Message-ID: <20221011164143.52c84421@rorschach.local.home> In-Reply-To: References: <20221007154145.1877054-1-vschneid@redhat.com> <3e680bb9-9896-3665-dd59-4f2e6f8205bb@redhat.com> 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-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: Juri Lelli , Mark Rutland , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , Sebastian Andrzej Siewior , Dave Hansen , linux-mips@vger.kernel.org, Guo Ren , "H. Peter Anvin" , sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, Marc Zyngier , linux-hexagon@vger.kernel.org, x86@kernel.org, Russell King , linux-csky@vger.kernel.org, Ingo Molnar , linux-snps-arc@lists.infradead.org, linux-xtensa@linux-xtensa.org, "Paul E. McKenney" , Frederic Weisbecker , Nicholas Piggin , openrisc@lists.librecores.org, Borislav Petkov , loongarch@lists.linux.dev, Thomas Gleixner , linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, Daniel Bristot de Oliveira , Marcelo Tosatti , linux-kernel@vger.kernel.org, Douglas RAILLARD , linux-alpha@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, "David S. Miller" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Tue, 11 Oct 2022 17:40:26 +0100 Valentin Schneider wrote: > > You could keep the tracepoint as a mask, and then make it pretty, like cpus=3-5,8 > > in user-space. For example with a trace-cmd/perf loadable plugin, libtracefs helper. > > > > That's a nice idea, the one downside I see is that means registering an > event handler for all events with cpumasks rather than directly targeting > cpumask fields, but that doesn't look too horrible. I'll dig a bit in that > direction. We could just make all all dynamic array's of unsigned long use that format? I don't know of any other event that has dynamic arrays of unsigned longs. And doing a search doesn't come up with any. -- Steve