From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: Re: [PATCH 01/39] Revert "scsi: megaraid_sas: Enable or Disable Fast path based on the PCI Threshold Bandwidth" Date: Mon, 6 Feb 2017 11:24:35 +0100 Message-ID: <7b191b3c-a885-11b6-a5dd-704027d7e9dd@suse.com> References: <1486375212-17329-1-git-send-email-shivasharan.srikanteshwara@broadcom.com> <1486375212-17329-2-git-send-email-shivasharan.srikanteshwara@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Return-path: Received: from smtp.nue.novell.com ([195.135.221.5]:51559 "EHLO smtp.nue.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750950AbdBFKYi (ORCPT ); Mon, 6 Feb 2017 05:24:38 -0500 In-Reply-To: <1486375212-17329-2-git-send-email-shivasharan.srikanteshwara@broadcom.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Shivasharan S , linux-scsi@vger.kernel.org Cc: martin.petersen@oracle.com, thenzl@redhat.com, jejb@linux.vnet.ibm.com, kashyap.desai@broadcom.com, sumit.saxena@broadcom.com On 02/06/2017 10:59 AM, Shivasharan S wrote: > This reverts > commit "3e5eadb1a881" ("scsi: megaraid_sas: Enable or Disable Fast path based on the PCI Threshold Bandwidth") > > This patch was aimed to increase performance of R1 Write operation for large IO size. > Since this method used timer approach, it turn on/off fast path did not work as expected. > Patch 0011 describes new algorithm and performance number. > > Signed-off-by: Shivasharan S > Signed-off-by: Kashyap Desai > --- > drivers/scsi/megaraid/megaraid_sas.h | 8 ----- > drivers/scsi/megaraid/megaraid_sas_base.c | 48 ----------------------------- > drivers/scsi/megaraid/megaraid_sas_fp.c | 7 ----- > drivers/scsi/megaraid/megaraid_sas_fusion.c | 16 ++++------ > drivers/scsi/megaraid/megaraid_sas_fusion.h | 2 +- > 5 files changed, 7 insertions(+), 74 deletions(-) > Reviewed-by: Hannes Reinecke Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@suse.com +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg)