From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id AF3B1225E966D for ; Thu, 29 Mar 2018 15:30:45 -0700 (PDT) Subject: [PATCH 4/4] acpi/nfit: allow knob to disable ARS being issued at kernel boot From: Dave Jiang Date: Thu, 29 Mar 2018 15:37:25 -0700 Message-ID: <152236304498.35558.9795379174339167399.stgit@djiang5-desk3.ch.intel.com> In-Reply-To: <152236282506.35558.2067249639136170490.stgit@djiang5-desk3.ch.intel.com> References: <152236282506.35558.2067249639136170490.stgit@djiang5-desk3.ch.intel.com> MIME-Version: 1.0 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: dan.j.williams@intel.com Cc: linux-acpi@vger.kernel.org, tony.luck@intel.com, rjw@rjwysocki.net, lenb@kernel.org, linux-nvdimm@lists.01.org List-ID: Adding a kernel module parameter no_start_ars in order to bypass kernel initiating scrubbing ARS. Signed-off-by: Dave Jiang --- drivers/acpi/nfit/core.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 668d040bf108..21b73ff444f4 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -55,6 +55,10 @@ module_param(default_dsm_family, int, S_IRUGO); MODULE_PARM_DESC(default_dsm_family, "Try this DSM type first when identifying NVDIMM family"); +static int no_start_ars = 0; +module_param(no_start_ars, int, S_IRUGO); +MODULE_PARM_DESC(no_start_ars, "Disable kernel from initiate ARS at boot"); + LIST_HEAD(acpi_descs); DEFINE_MUTEX(acpi_desc_lock); @@ -2959,10 +2963,13 @@ static void acpi_nfit_scrub(struct work_struct *work) list_for_each_entry(nfit_spa, &acpi_desc->spas, list) { if (nfit_spa->ars_state == NFIT_ARS_STATE_IDLE) { - dev_dbg(dev, "range %d set for ARS\n", - nfit_spa->spa->range_index); - nfit_spa->ars_state = NFIT_ARS_STATE_REQUESTED; - ars_needed++; + if (!no_start_ars) { + dev_dbg(dev, "range %d set for ARS\n", + nfit_spa->spa->range_index); + nfit_spa->ars_state = + NFIT_ARS_STATE_REQUESTED; + ars_needed++; + } } } _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm