netdev - Re: [PATCH net-next v2 0/9] ibmvnic: Performance improvements and other updates

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Message-ID: <20201120195246.18533062@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Fri, 20 Nov 2020 19:52:46 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Thomas Falcon <tlfalcon@...ux.ibm.com>
Cc:     netdev@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        cforno12@...ux.ibm.com, ljp@...ux.vnet.ibm.com,
        ricklind@...ux.ibm.com, dnbanerg@...ibm.com,
        drt@...ux.vnet.ibm.com, brking@...ux.vnet.ibm.com,
        sukadev@...ux.vnet.ibm.com
Subject: Re: [PATCH net-next v2 0/9] ibmvnic: Performance improvements and
 other updates

On Wed, 18 Nov 2020 19:12:16 -0600 Thomas Falcon wrote:
> The first three patches utilize a hypervisor call allowing multiple 
> TX and RX buffer replenishment descriptors to be sent in one operation,
> which significantly reduces hypervisor call overhead. The xmit_more
> and Byte Queue Limit API's are leveraged to provide this support
> for TX descriptors.
> 
> The subsequent two patches remove superfluous code and members in
> TX completion handling function and TX buffer structure, respectively,
> and remove unused routines.
> 
> Finally, four patches which ensure that device queue memory is
> cache-line aligned, resolving slowdowns observed in PCI traces,
> as well as optimize the driver's NAPI polling function and 
> to RX buffer replenishment are provided by Dwip Banerjee.
> 
> This series provides significant performance improvements, allowing
> the driver to fully utilize 100Gb NIC's.

Applied, thanks!