Re: [PATCH 1/4] megaraid_sas: reduce memory footprints in kdump mode

[Hannes Reinecke <hare@suse.de>]

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, disable dual queue depth,
>    restrict to single MSI-x vector. 
> 
> Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
> ---
>  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(-)
> 
Reviewed-by: Hannes Reinecke <hare@suse.com>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		   Teamlead Storage & Networking
hare@suse.de			               +49 911 74053 688
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