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=-8.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 9DDBAC4332B for ; Wed, 18 Mar 2020 20:57:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 64115208FE for ; Wed, 18 Mar 2020 20:57:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584565074; bh=rFLv1ZfRcV+svX8JTmV+UQxowcY75lz27dYs4kS6JTk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=12tad9a7s7o1EhHC8K0k99daWGByeILPmWalbijuYEd8ASkytN+3D4tZhR/YQpmss m5oEY8xK+O74qS0DVSSwS6h/HooJDCsYC+NmXQKRpW/CcpnU6ggDjrtol9OzuXg/xi voIvwZGJdmAkthIWH89BdetVWqof7vxmA5To8Dx0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728376AbgCRU5v (ORCPT ); Wed, 18 Mar 2020 16:57:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:58584 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728339AbgCRU5K (ORCPT ); Wed, 18 Mar 2020 16:57:10 -0400 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9674A208E0; Wed, 18 Mar 2020 20:57:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584565029; bh=rFLv1ZfRcV+svX8JTmV+UQxowcY75lz27dYs4kS6JTk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=xljifAxNivUslQxB0dEZbzfkBmD+lKeG1i4Zu0f4ZRaU7QqI58Yeigqxo2i7lgJj3 No8I85DDU9TleHICnvT+UQMBEoeHcB/Cf6mFuyFNGH386BIT46hb59dGhDR4MXSMk6 IfsNELEx6AoL/oVqpy/sO2tX4ylZfDhlQ/aiJdiU= Date: Wed, 18 Mar 2020 20:57:05 +0000 From: Will Deacon To: Tuan Phan Cc: patches@amperecomputing.com, Mark Rutland , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, suzuki.poulose@arm.com Subject: Re: [PATCH 1/2] perf: dsu: Allow multiple devices share same IRQ. Message-ID: <20200318205704.GC8094@willie-the-truck> References: <1584491176-31358-1-git-send-email-tuanphan@os.amperecomputing.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1584491176-31358-1-git-send-email-tuanphan@os.amperecomputing.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 [+Suzuki, since he wrote the driver] On Tue, Mar 17, 2020 at 05:26:15PM -0700, Tuan Phan wrote: > Add IRQF_SHARED flag when register IRQ such that multiple dsu > devices can share same IRQ. > > Signed-off-by: Tuan Phan > --- > drivers/perf/arm_dsu_pmu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/perf/arm_dsu_pmu.c b/drivers/perf/arm_dsu_pmu.c > index 70968c8..2622900 100644 > --- a/drivers/perf/arm_dsu_pmu.c > +++ b/drivers/perf/arm_dsu_pmu.c > @@ -700,7 +700,7 @@ static int dsu_pmu_device_probe(struct platform_device *pdev) > if (!name) > return -ENOMEM; > rc = devm_request_irq(&pdev->dev, irq, dsu_pmu_handle_irq, > - IRQF_NOBALANCING, name, dsu_pmu); > + IRQF_NOBALANCING | IRQF_SHARED, name, dsu_pmu); > if (rc) { > dev_warn(&pdev->dev, "Failed to request IRQ %d\n", irq); > return rc; > -- > 2.7.4 >