[dpdk-dev] [RFC v2 1/2] ethdev: provide device flag to bypass ethdev queue xstats

[Min Hu (Connor)]

在 2020/10/16 20:16, Ferruh Yigit 写道:
> On 10/14/2020 3:26 AM, Ferruh Yigit wrote:
>> Queue stats are stored in 'struct rte_eth_stats' as array and array size
>> is defined by 'RTE_ETHDEV_QUEUE_STAT_CNTRS' compile time flag.
>>
>> As a result of technical board discussion, decided to remove the queue
>> statistics from 'struct rte_eth_stats' in the long term.
>>
>> Instead PMDs should represent the queue statistics via xstats, this
>> gives more flexibility on the number of the queues supported.
>>
>> Currently queue stats in the xstats are filled by ethdev layer, using
>> some basic stats, when queue stats removed from basic stats the
>> responsibility to fill the relevant xstats will be pushed to the PMDs.
>>
>> During the switch period, temporary 'RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS'
>> device flag is created. Initially all PMDs using xstats set this flag.
>> The PMDs implemented queue stats in the xstats should clear the flag.
>>
>> When all PMDs switch to the xstats for the queue stats, queue stats
>> related fields from 'struct rte_eth_stats' will be removed, as well as
>> 'RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS' flag.
>> Later 'RTE_ETHDEV_QUEUE_STAT_CNTRS' compile time flag also can be
>> removed.
>>
>> Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
> 
> Hi Thomas, Andrew,
> 
> What do you think having the patch for this release?
> 
> 
> Connor, Xavier,
> 
> Are you OK to superseded your existing patch [1] with this approach?
> [1] https://patches.dpdk.org/patch/78886/
Hi, Ferruh,
	it is ok, we will continue the work with your solution. Thanks.


> .