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=-5.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 2F89EC433DB for ; Fri, 8 Jan 2021 13:27:51 +0000 (UTC) Received: by mail.kernel.org (Postfix) id E70C723A03; Fri, 8 Jan 2021 13:27:50 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id C38F023A00; Fri, 8 Jan 2021 13:27:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1610112470; bh=nt6ziUzHkm3hfrCQXU1yzp/8m62e8IE7ZOVrqdMhV9Y=; h=References:In-Reply-To:From:Date:Subject:To:List-Id:Cc:From; b=o8BBVlEkk/2DOJqPrlhzkqXZDSFqZkIHtaZVaSWJBtjJYBm3aZHSnc2KDZOMB0Cso IIOqtKc5XT9Gk29lj+idvFh5nOdwceLvPiOwEswduR8kanWQx8cwlB9nG2nA+MOTQJ XxIGLD8KXiCYgpzJvGGBvqWLkUATQPCfM2zqK5LUXYVonb+lQAML0tJQTCYASBf9km k9C5pWfblV2/0ki0QNrCd6tstEIdtZMMHHPUIN4+Lb1bOgGJwYtM5V+C+NegCwD0zT wUztvyMBFKOd4Gv8UEu2UP3vwTGan5rCFRHuskuedmM+3JBqPy5nb5lh9qnXimmwiY zs6sL+pC0ogrg== Received: by mail-oi1-f175.google.com with SMTP id s75so11335810oih.1; Fri, 08 Jan 2021 05:27:50 -0800 (PST) X-Gm-Message-State: AOAM532a427+4Ennmh772ruWk23/1iv6SZpMWG4UgDK7jhLJfIeCGhVD T8tu6GV6QlCJNn2JynZh/e9nyamAoOFV22wjItM= X-Google-Smtp-Source: ABdhPJxzS4h2MK5B78Iv8vYCQh0roQTlfXNRTBFIfep0yXLkz/Fy/e07HKL+4g3po6EkgtmvS53fH+uipK43dKV2JYk= X-Received: by 2002:aca:fd91:: with SMTP id b139mr2185199oii.67.1610112470141; Fri, 08 Jan 2021 05:27:50 -0800 (PST) MIME-Version: 1.0 References: <20210108105241.1757799-1-misono.tomohiro@jp.fujitsu.com> <20210108105241.1757799-10-misono.tomohiro@jp.fujitsu.com> In-Reply-To: <20210108105241.1757799-10-misono.tomohiro@jp.fujitsu.com> From: Arnd Bergmann Date: Fri, 8 Jan 2021 14:27:34 +0100 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH 09/10] soc: fujitsu: hwb: Add sysfs entry To: Misono Tomohiro List-Id: Cc: Linux ARM , SoC Team , Will Deacon , Catalin Marinas , Arnd Bergmann , Olof Johansson Content-Type: text/plain; charset="UTF-8" On Fri, Jan 8, 2021 at 11:52 AM Misono Tomohiro wrote: > > This adds sysfs entry per CMG to show running barrier driver status > for debugging user application. The following entries will be created: > > /sys/class/misc/fujitsu_hwb > |- hwinfo ... number of CMG/BB/BW/pe_per_cmg on running system > |- CMG0 > |- core_map ... cpuid belonging to this CMG > |- used_bb_bmap ... bitmap of currently allocated BB > |- used_bw_bmap ... bitmap of currently allocated BW > |- init_sync_bb0 ... current value of INIT_SYNC register 0 > |- init_sync_bb1 ... current value of INIT_SYNC register 1 > ... > |- CMG1 > ... If this is meant as a stable interface, it should be documented in Documentation/ABI/ However, if it's purely for debugging and may not get maintained forever, you might want to use debugfs instead. Arnd 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=-3.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 384F1C433E0 for ; Fri, 8 Jan 2021 13:29:52 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DBCC322E02 for ; Fri, 8 Jan 2021 13:29:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DBCC322E02 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:To:Subject:Message-ID:Date:From:In-Reply-To: References:MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=PPwU22Cm1AMMbD2S2TbAmYBC7U+TjYfuB8b9XIrsOjI=; b=poKacSaoMDVFwDtbnjJgE54i/ Z1LA115gzsDzxE8miashU7O3oAAIYjdGdNH3EYNIg3ZvzTBakgqEyVyDRwFruOixNWLqsZ6XQtcaG qEUewkjKW5Mb4VqJ7Z6T8qcY850yVheZjly2Ue09eIlBslAbpGrgtitR9p/a7r27ruAGX4aXa6u4M Zd1zJ5CPwJZuoaVTfGmq2FmSbe84iFIkeoOMMkqAA1UvzTVegovBe0a+8O03ml47BUythioFianJY 2AqDJjb8CTVqlRs8tTQvJyBUG47MwqdV6o2h6UWAttLyk+AJUpEgL0imC5o82AnLkhfqtrJz03SIW wXHUMJVQw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kxroN-0008JW-KD; Fri, 08 Jan 2021 13:28:15 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kxrnz-0008Ix-MQ for linux-arm-kernel@lists.infradead.org; Fri, 08 Jan 2021 13:27:52 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id C04852396F for ; Fri, 8 Jan 2021 13:27:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1610112470; bh=nt6ziUzHkm3hfrCQXU1yzp/8m62e8IE7ZOVrqdMhV9Y=; h=References:In-Reply-To:From:Date:Subject:To:List-Id:Cc:From; b=o8BBVlEkk/2DOJqPrlhzkqXZDSFqZkIHtaZVaSWJBtjJYBm3aZHSnc2KDZOMB0Cso IIOqtKc5XT9Gk29lj+idvFh5nOdwceLvPiOwEswduR8kanWQx8cwlB9nG2nA+MOTQJ XxIGLD8KXiCYgpzJvGGBvqWLkUATQPCfM2zqK5LUXYVonb+lQAML0tJQTCYASBf9km k9C5pWfblV2/0ki0QNrCd6tstEIdtZMMHHPUIN4+Lb1bOgGJwYtM5V+C+NegCwD0zT wUztvyMBFKOd4Gv8UEu2UP3vwTGan5rCFRHuskuedmM+3JBqPy5nb5lh9qnXimmwiY zs6sL+pC0ogrg== Received: by mail-oi1-f182.google.com with SMTP id q25so11282493oij.10 for ; Fri, 08 Jan 2021 05:27:50 -0800 (PST) X-Gm-Message-State: AOAM531vDgnms9A04kcv6o47ROAhMSnXEguroWqEF4Aj4GW9K/MfFYHu lrTP8enmUZvfqFBsIi+z9l+jOVlyHDfks+lQqRc= X-Google-Smtp-Source: ABdhPJxzS4h2MK5B78Iv8vYCQh0roQTlfXNRTBFIfep0yXLkz/Fy/e07HKL+4g3po6EkgtmvS53fH+uipK43dKV2JYk= X-Received: by 2002:aca:fd91:: with SMTP id b139mr2185199oii.67.1610112470141; Fri, 08 Jan 2021 05:27:50 -0800 (PST) MIME-Version: 1.0 References: <20210108105241.1757799-1-misono.tomohiro@jp.fujitsu.com> <20210108105241.1757799-10-misono.tomohiro@jp.fujitsu.com> In-Reply-To: <20210108105241.1757799-10-misono.tomohiro@jp.fujitsu.com> From: Arnd Bergmann Date: Fri, 8 Jan 2021 14:27:34 +0100 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH 09/10] soc: fujitsu: hwb: Add sysfs entry To: Misono Tomohiro X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210108_082751_811341_33D4D831 X-CRM114-Status: GOOD ( 12.49 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Cc: Arnd Bergmann , Catalin Marinas , SoC Team , Olof Johansson , Will Deacon , Linux ARM 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 Message-ID: <20210108132734.DKDbfphePu3xWiDfNGR_VX2mVg1__tC9KZYsG2cPn2E@z> On Fri, Jan 8, 2021 at 11:52 AM Misono Tomohiro wrote: > > This adds sysfs entry per CMG to show running barrier driver status > for debugging user application. The following entries will be created: > > /sys/class/misc/fujitsu_hwb > |- hwinfo ... number of CMG/BB/BW/pe_per_cmg on running system > |- CMG0 > |- core_map ... cpuid belonging to this CMG > |- used_bb_bmap ... bitmap of currently allocated BB > |- used_bw_bmap ... bitmap of currently allocated BW > |- init_sync_bb0 ... current value of INIT_SYNC register 0 > |- init_sync_bb1 ... current value of INIT_SYNC register 1 > ... > |- CMG1 > ... If this is meant as a stable interface, it should be documented in Documentation/ABI/ However, if it's purely for debugging and may not get maintained forever, you might want to use debugfs instead. Arnd _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel