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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 13E11EB64DC for ; Tue, 11 Jul 2023 12:10:52 +0000 (UTC) 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:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=mZZzTWzasJ9asH5RzvMZZCk6+V90lxQp+Xi0t4CmF38=; b=i4WDzDTTkaKdgT 8LslhUhZYAaJyHceCU5yodr2+pVs8A6lqu3jTBiIa6qN1P0yTs6Xf+P0J8BdzUDv2mBxkiPQwFrUx LYLG1qJPUGddIdxxVn8wC8oJcnY3d0mlLxRvHybpn/A/NMIvbYFQpdzMOZetQpdkLWcHNH0c2qVJI jyVIBm8je3OnA1C6vQVC0sz+oBQb8plJx1/9K2hWEz6SaEEWelwZhXtJFs9TR2ezvQMyu/Q0aydct 6fUTPFMVhKrfooirxen46cssu5qXAv/WtQptMVLzKbtIqUXRYYoxFwC7uotQ0ZNZgqW+4CWyb6UCc WTP0y1+O7xME0Pma9kxg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qJCCF-00Eq1o-2c; Tue, 11 Jul 2023 12:10:23 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qJCCC-00Eq0U-02 for linux-arm-kernel@lists.infradead.org; Tue, 11 Jul 2023 12:10:22 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E03312B; Tue, 11 Jul 2023 05:10:59 -0700 (PDT) Received: from [10.163.47.87] (unknown [10.163.47.87]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id BCBA33F67D; Tue, 11 Jul 2023 05:10:11 -0700 (PDT) Message-ID: <96a3d12a-71d8-1779-28a3-316e1838292e@arm.com> Date: Tue, 11 Jul 2023 17:40:09 +0530 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 Subject: Re: [PATCH 4/4] perf: Remove unused PERF_PMU_CAP_HETEROGENEOUS_CPUS capability Content-Language: en-US To: James Clark , linux-perf-users@vger.kernel.org, irogers@google.com Cc: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Adrian Hunter , Thomas Gleixner , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Will Deacon , Kan Liang , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <20230710122138.1450930-1-james.clark@arm.com> <20230710122138.1450930-5-james.clark@arm.com> From: Anshuman Khandual In-Reply-To: <20230710122138.1450930-5-james.clark@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230711_051020_103353_56B80048 X-CRM114-Status: GOOD ( 16.82 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 7/10/23 17:51, James Clark wrote: > Since commit bd2756811766 ("perf: Rewrite core context handling") the > relationship between perf_event_context and PMUs has changed so that > the error scenario that PERF_PMU_CAP_HETEROGENEOUS_CPUS originally > silenced no longer exists. > > Remove the capability to avoid confusion that it actually influences > any perf core behavior. This change should be a no-op. > > Signed-off-by: James Clark > --- > include/linux/perf_event.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h > index d5628a7b5eaa..3f4d941fd6c5 100644 > --- a/include/linux/perf_event.h > +++ b/include/linux/perf_event.h > @@ -288,7 +288,7 @@ struct perf_event_pmu_context; > #define PERF_PMU_CAP_EXTENDED_REGS 0x0008 > #define PERF_PMU_CAP_EXCLUSIVE 0x0010 > #define PERF_PMU_CAP_ITRACE 0x0020 > -#define PERF_PMU_CAP_HETEROGENEOUS_CPUS 0x0040 > +/* Unused 0x0040 */ Small nit, "Unused" marking might not be required here. > #define PERF_PMU_CAP_NO_EXCLUDE 0x0080 > #define PERF_PMU_CAP_AUX_OUTPUT 0x0100 > #define PERF_PMU_CAP_EXTENDED_HW_TYPE 0x0200 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel