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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1AAFAC43217 for ; Tue, 11 Oct 2022 20:41:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229694AbiJKUl5 (ORCPT ); Tue, 11 Oct 2022 16:41:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59114 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229504AbiJKUl4 (ORCPT ); Tue, 11 Oct 2022 16:41:56 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9AB9C71BC1; Tue, 11 Oct 2022 13:41:54 -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 ams.source.kernel.org (Postfix) with ESMTPS id 4DE87B8169A; 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 Cc: Daniel Bristot de Oliveira , linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, x86@kernel.org, "Paul E. McKenney" , Peter Zijlstra , Thomas Gleixner , Sebastian Andrzej Siewior , Juri Lelli , Frederic Weisbecker , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Marc Zyngier , Mark Rutland , Russell King , Nicholas Piggin , Marcelo Tosatti , Guo Ren , "David S. Miller" , Douglas RAILLARD 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 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org 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