On 2019/8/23 16:06, Leizhen (ThunderTown) wrote:
>
>
> On 2019/8/23 15:50, Will Deacon wrote:
>> On Fri, Aug 23, 2019 at 10:45:49AM +0800, Zhen Lei wrote:
>>> v2 --> v3:
>>> As Will Deacon's suggestion, I changed the lock type of
>>> arm_smmu_domain.devices_lock from spinlock_t to rwlock_t, and I saw that the
>>> performance is all right. And further use nr_ats_masters to quickly check
>>> have
>>> no obvious effect, so I drop it.
>>
>> :/
>>
>> I already sent two versions of a series fixing this without any locking at
>> all on the ->unmap() path, and you were on cc. I've also queued that stuff
>> up.
>>
>> Did you not receive my patches?
> Sorry, my message filter setting is a bit wrong, must contains
> "linux-ker...@vger.kernel.org", I have corrected it.
>
>>
>> v1: https://lists.linuxfoundation.org/pipermail/iommu/2019-August/038306.html
>> v2: https://lists.linuxfoundation.org/pipermail/iommu/2019-August/038374.html
> OK, I will test it when it's my turn to use the board.
The test result shows good to me, without these patches, it's about 22xx-23xx
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [11160M/0K /s] [2725K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [11165M/0K /s] [2726K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [11220M/0K /s] [2739K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [11189M/0K /s] [2732K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [11082M/0K /s] [2705K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [11003M/0K /s] [2686K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [11412M/0K /s] [2786K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [11415M/0K /s] [2787K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [11214M/0K /s] [2738K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [11054M/0K /s] [2699K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [10733M/0K /s] [2620K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.6% done] [10772M/0K /s] [2630K/0
Jobs: 24 (f=24): [RRRRRRRRRRRRRRRRRRRRRRRR] [0.7% done] [10772M/0K /s] [2630K/0
>
>>
>> Queued:
>> https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git/log/?h=for-joerg/arm-smmu/smmu-v3
>>
>> Will
>>
>> .
>>
>
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