From patchwork Tue Aug 9 12:07:51 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Per Forlin X-Patchwork-Id: 3315 Return-Path: X-Original-To: patchwork@peony.canonical.com Delivered-To: patchwork@peony.canonical.com Received: from fiordland.canonical.com (fiordland.canonical.com [91.189.94.145]) by peony.canonical.com (Postfix) with ESMTP id 464A823F3F for ; Tue, 9 Aug 2011 12:08:13 +0000 (UTC) Received: from mail-qy0-f173.google.com (mail-qy0-f173.google.com [209.85.216.173]) by fiordland.canonical.com (Postfix) with ESMTP id 14E86A18597 for ; Tue, 9 Aug 2011 12:08:12 +0000 (UTC) Received: by qyk31 with SMTP id 31so2458380qyk.11 for ; Tue, 09 Aug 2011 05:08:12 -0700 (PDT) Received: by 10.229.183.84 with SMTP id cf20mr5150363qcb.121.1312891692524; Tue, 09 Aug 2011 05:08:12 -0700 (PDT) X-Forwarded-To: linaro-patchwork@canonical.com X-Forwarded-For: patch@linaro.org linaro-patchwork@canonical.com Delivered-To: patches@linaro.org Received: by 10.229.190.71 with SMTP id dh7cs44702qcb; Tue, 9 Aug 2011 05:08:12 -0700 (PDT) Received: from mr.google.com ([10.213.16.212]) by 10.213.16.212 with SMTP id p20mr1326299eba.118.1312891692095 (num_hops = 1); Tue, 09 Aug 2011 05:08:12 -0700 (PDT) Received: by 10.213.16.212 with SMTP id p20mr1013832eba.118.1312891691478; Tue, 09 Aug 2011 05:08:11 -0700 (PDT) Received: from mail-ey0-f172.google.com (mail-ey0-f172.google.com [209.85.215.172]) by mx.google.com with ESMTPS id o53si4173103eeb.30.2011.08.09.05.08.10 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 09 Aug 2011 05:08:11 -0700 (PDT) Received-SPF: neutral (google.com: 209.85.215.172 is neither permitted nor denied by best guess record for domain of per.forlin@linaro.org) client-ip=209.85.215.172; Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.215.172 is neither permitted nor denied by best guess record for domain of per.forlin@linaro.org) smtp.mail=per.forlin@linaro.org Received: by mail-ey0-f172.google.com with SMTP id 4so3564978eye.31 for ; Tue, 09 Aug 2011 05:08:10 -0700 (PDT) Received: by 10.213.114.74 with SMTP id d10mr526084ebq.82.1312891690475; Tue, 09 Aug 2011 05:08:10 -0700 (PDT) Received: from localhost.localdomain (c-c37f71d5.029-82-6c756e10.cust.bredbandsbolaget.se [213.113.127.195]) by mx.google.com with ESMTPS id i3sm3004876eea.27.2011.08.09.05.08.08 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 09 Aug 2011 05:08:09 -0700 (PDT) From: Per Forlin To: Akinobu Mita , akpm@linux-foundation.org, Linus Walleij , linux-kernel@vger.kernel.org, Randy Dunlap , Chris Ball Cc: linux-doc@vger.kernel.org, linux-mmc@vger.kernel.org, linaro-dev@lists.linaro.org, linux-mm@kvack.org, Per Forlin Subject: [PATCH --mmotm v8 3/3] fault injection: add documentation on MMC IO fault injection Date: Tue, 9 Aug 2011 14:07:51 +0200 Message-Id: <1312891671-28680-4-git-send-email-per.forlin@linaro.org> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1312891671-28680-1-git-send-email-per.forlin@linaro.org> References: <1312891671-28680-1-git-send-email-per.forlin@linaro.org> Add description on how to enable random fault injection for MMC IO Signed-off-by: Per Forlin Acked-by: Akinobu Mita --- Documentation/fault-injection/fault-injection.txt | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/Documentation/fault-injection/fault-injection.txt b/Documentation/fault-injection/fault-injection.txt index 82a5d25..70f924e 100644 --- a/Documentation/fault-injection/fault-injection.txt +++ b/Documentation/fault-injection/fault-injection.txt @@ -21,6 +21,11 @@ o fail_make_request /sys/block//make-it-fail or /sys/block///make-it-fail. (generic_make_request()) +o fail_mmc_request + + injects MMC data errors on devices permitted by setting + debugfs entries under /sys/kernel/debug/mmc0/fail_mmc_request + Configure fault-injection capabilities behavior ----------------------------------------------- @@ -115,7 +120,8 @@ use the boot option: failslab= fail_page_alloc= - fail_make_request=,,, + fail_make_request= + fail_mmc_request=,,, How to add new fault injection capability -----------------------------------------