From patchwork Thu Sep 17 18:56:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rishabh Bhatnagar X-Patchwork-Id: 11783377 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3843B59D for ; Thu, 17 Sep 2020 18:57:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 18DC722226 for ; Thu, 17 Sep 2020 18:57:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="PENTVfGG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726650AbgIQS5A (ORCPT ); Thu, 17 Sep 2020 14:57:00 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:23452 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726526AbgIQS47 (ORCPT ); Thu, 17 Sep 2020 14:56:59 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1600369018; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=DMvIzCf6NdTGdG0zhswNitJ30ULOFunnzOgL2Jm0pTI=; b=PENTVfGG4GP2L0a+i32tBo5koocEvKkbVg6o6ffLbIsLxwnWpEfIUgMcxsMiyzF3mBRGBlFG CxAkF8j3rzhJfRZjDs2jbKPbTspNVIjrDmt+wDUN9j2vnaDWq/ypvTrlGiboeyLcmIJ8MJ6B 76eUdr2qVyfHhQkvZ6Cmv6WqwfY= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI4ZWZiZiIsICJsaW51eC1yZW1vdGVwcm9jQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n05.prod.us-east-1.postgun.com with SMTP id 5f63b174ae7ca421d25134af (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 17 Sep 2020 18:56:52 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id ECFDCC43382; Thu, 17 Sep 2020 18:56:51 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=ALL_TRUSTED,BAYES_00,SPF_FAIL autolearn=no autolearn_force=no version=3.4.0 Received: from rishabhb-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: rishabhb) by smtp.codeaurora.org (Postfix) with ESMTPSA id E7A2EC433F0; Thu, 17 Sep 2020 18:56:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E7A2EC433F0 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=rishabhb@codeaurora.org From: Rishabh Bhatnagar To: bjorn.andersson@linaro.org, ohad@wizery.com Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, tsoni@codeaurora.org, psodagud@codeaurora.org, sidgup@codeaurora.org, Rishabh Bhatnagar Subject: [PATCH v4 0/3] Move recovery/coredump configuration to sysfs Date: Thu, 17 Sep 2020 11:56:37 -0700 Message-Id: <1600368999-9461-1-git-send-email-rishabhb@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org From Android R onwards Google has restricted access to debugfs in user and user-debug builds. This restricts access to most of the features exposed through debugfs. This patch series removes the recovery/coredump entries from debugfs and moves them to sysfs. 'Coredump' and 'Recovery' are critical interfaces that are required for remoteproc to work on Qualcomm Chipsets. Coredump configuration needs to be set to "inline" in debug/test build and "disabled" in production builds. Whereas recovery needs to be "disabled" for debugging purposes and "enabled" on production builds. Changelog: v4 -> v3: - Remove the feature flag to expose recovery/coredump v3 -> v2: - Remove the coredump/recovery entries from debugfs - Expose recovery/coredump from sysfs under a feature flag v1 -> v2: - Correct the contact name in the sysfs documentation. - Remove the redundant write documentation for coredump/recovery sysfs - Add a feature flag to make this interface switch configurable. Rishabh Bhatnagar (3): remoteproc: Expose remoteproc configuration through sysfs remoteproc: Add coredump configuration to sysfs remoteproc: Add recovery configuration to sysfs Documentation/ABI/testing/sysfs-class-remoteproc | 44 ++++++++ drivers/remoteproc/Kconfig | 12 +++ drivers/remoteproc/remoteproc_debugfs.c | 10 +- drivers/remoteproc/remoteproc_sysfs.c | 126 +++++++++++++++++++++++ 4 files changed, 190 insertions(+), 2 deletions(-)