From patchwork Thu Sep 3 23:03:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rishabh Bhatnagar X-Patchwork-Id: 11755517 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 65489166C for ; Thu, 3 Sep 2020 23:05:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4387820786 for ; Thu, 3 Sep 2020 23:05:40 +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="XfcHrfGV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729226AbgICXFj (ORCPT ); Thu, 3 Sep 2020 19:05:39 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:57346 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725787AbgICXE6 (ORCPT ); Thu, 3 Sep 2020 19:04:58 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1599174297; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=hDpiCErf5Pq+wUXV3mxX7j9jGGSRA8i/72xM+93TfzU=; b=XfcHrfGV8pioyRTbHNqpqe5CToCHbzvxZJJ7xRtr9qIISxeu/yCF5vovU+PiiFO7sYJEmrW0 b66QMX6KlZ899Tjw4DNCdxawLtlmksdYwwFlKBPOr6dX7xIjUQrZHnghYywbdoOVmwPOsTa1 da2Lo2ZCzQYepJ4irXXXHF0+zd8= X-Mailgun-Sending-Ip: 69.72.43.7 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-n07.prod.us-west-2.postgun.com with SMTP id 5f51767b25e1ee7586181bf6 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 03 Sep 2020 23:04:27 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id A9BBEC43391; Thu, 3 Sep 2020 23:04:26 +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=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable 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 92482C433C9; Thu, 3 Sep 2020 23:04:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 92482C433C9 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=none smtp.mailfrom=rishabhb@codeaurora.org From: Rishabh Bhatnagar To: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: bjorn.andersson@linaro.org, tsoni@codeaurora.org, psodagud@codeaurora.org, sidgup@codeaurora.org, Rishabh Bhatnagar Subject: [PATCH v3 0/3] Expose recovery/coredump configuration from sysfs Date: Thu, 3 Sep 2020 16:03:42 -0700 Message-Id: <1599174226-2307-1-git-send-email-rishabhb@codeaurora.org> X-Mailer: git-send-email 2.7.4 Sender: linux-remoteproc-owner@vger.kernel.org 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 adds a configurable option to expose these interfaces from 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: 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(-)