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 X-Spam-Level: X-Spam-Status: No, score=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 67FD7C432C3 for ; Thu, 14 Nov 2019 09:51:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3DFD020715 for ; Thu, 14 Nov 2019 09:51:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="aUc+ysWx" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726812AbfKNJvj (ORCPT ); Thu, 14 Nov 2019 04:51:39 -0500 Received: from merlin.infradead.org ([205.233.59.134]:46994 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726057AbfKNJvh (ORCPT ); Thu, 14 Nov 2019 04:51:37 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; 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:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=RFb84Wx8cc7mWiQHe41LwTIozaCOCfgKEuPtCjC/vQw=; b=aUc+ysWxulxWkEgxqip7anrSb 6qTf67QjCHA2Bz3GoaylzLfVOEBSuygke+a4ydMNRbpvb71oQMD7d+NhixLryWUXEnsouvoIMLCGs YiUp5CGBlRk6EkC8omiNvTcHWMj9C4ptykOEbA4m8ax3FSbI3PA1t3+F1TW+7H3znya2gxPoSPCwL RT//zqgwFCh0x8ztcIm3ruhUZBISkHGmSMyCic5+egfHqnWbDHsCm4Em5wuDIK3PGiT3kkV4PZlto tLGe6z3qwTzCo6iNE1qmvyZXuzkgWrefaBPkojbO8rXJQcyMZ1paeMhlJVCH7je426oQHhJslYIMG yfLiJJ7tg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1iVBmX-0003I1-6h; Thu, 14 Nov 2019 09:51:17 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 71F143002B0; Thu, 14 Nov 2019 10:50:07 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id D723129DF1245; Thu, 14 Nov 2019 10:51:14 +0100 (CET) Date: Thu, 14 Nov 2019 10:51:14 +0100 From: Peter Zijlstra To: Ian Rogers Cc: Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Andrew Morton , Masahiro Yamada , Kees Cook , Catalin Marinas , Petr Mladek , Mauro Carvalho Chehab , Qian Cai , Joe Lawrence , Tetsuo Handa , Sri Krishna chowdary , "Uladzislau Rezki (Sony)" , Andy Shevchenko , Changbin Du , Ard Biesheuvel , "David S. Miller" , Kent Overstreet , Gary Hook , Arnd Bergmann , Kan Liang , linux-kernel@vger.kernel.org, Stephane Eranian , Andi Kleen Subject: Re: [PATCH v3 04/10] perf: Add per perf_cpu_context min_heap storage Message-ID: <20191114095114.GP4131@hirez.programming.kicks-ass.net> References: <20191114003042.85252-1-irogers@google.com> <20191114003042.85252-5-irogers@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191114003042.85252-5-irogers@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Nov 13, 2019 at 04:30:36PM -0800, Ian Rogers wrote: > + if (cpuctx) { > + event_heap = (struct min_max_heap){ > + .data = cpuctx->itr_storage, > + .size = 0, C guarantees that unnamed fields get to be 0 > + .cap = cpuctx->itr_storage_cap, > + }; > + } else { > + event_heap = (struct min_max_heap){ > + .data = itrs, > + .size = 0, idem. > + .cap = ARRAY_SIZE(itrs), > + }; > + /* Events not within a CPU context may be on any CPU. */ > + __heap_add(&event_heap, perf_event_groups_first(groups, -1)); > + suprious whitespace > + } > + evt = event_heap.data; > + > __heap_add(&event_heap, perf_event_groups_first(groups, cpu));