From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: Re: [PATCH 1/4] megaraid_sas: reduce memory footprints in kdump mode Date: Fri, 15 Apr 2016 16:11:40 +0200 Message-ID: <5710F69C.5070202@suse.de> References: <1460705013-6482-1-git-send-email-sumit.saxena@broadcom.com> <1460705013-6482-2-git-send-email-sumit.saxena@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mx2.suse.de ([195.135.220.15]:50687 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751436AbcDOOLo (ORCPT ); Fri, 15 Apr 2016 10:11:44 -0400 In-Reply-To: <1460705013-6482-2-git-send-email-sumit.saxena@broadcom.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Sumit Saxena , James.Bottomley@HansenPartnership.com, martin.petersen@oracle.com, hch@infradead.org, thenzl@redhat.com Cc: kashyap.desai@broadcom.com, linux-scsi@vger.kernel.org On 04/15/2016 09:23 AM, Sumit Saxena wrote: > This patch will reduce memory footprints of megaraid_sas driver when = booted in kdump mode. > Driver will not allocate memory for optional and perfromance oriented= features. > Below are key changes done in megaraid_sas driver to do this- > 1. Limit Controller's queue depth to 100 in kdump mode. > 2. Do not allocate memory for system info buffer and PD info buffer. > 3. Disable performance oriented features e.g. Disable RDPQ mode, disa= ble dual queue depth, > restrict to single MSI-x vector.=20 >=20 > Signed-off-by: Sumit Saxena > --- > drivers/scsi/megaraid/megaraid_sas.h | 2 ++ > drivers/scsi/megaraid/megaraid_sas_base.c | 48 +++++++++++++++++--= ---------- > drivers/scsi/megaraid/megaraid_sas_fusion.c | 3 ++ > 3 files changed, 34 insertions(+), 19 deletions(-) >=20 Reviewed-by: Hannes Reinecke Cheers, Hannes --=20 Dr. Hannes Reinecke Teamlead Storage & Networking hare@suse.de +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 N=FCrnberg GF: F. Imend=F6rffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG N=FCrnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html