linux-kernel - An cma optimization patch is used for cma

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Date:   Fri, 13 Aug 2021 07:00:07 +0000
From:   Jichao Zou <zoujc@...orola.com>
To:     "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "minchan@...nel.org" <minchan@...nel.org>,
        "david@...hat.com" <david@...hat.com>,
        "song.bao.hua@...ilicon.com" <song.bao.hua@...ilicon.com>,
        "hch@....de" <hch@....de>,
        "m.szyprowski@...sung.com" <m.szyprowski@...sung.com>,
        "robin.murphy@....com" <robin.murphy@....com>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        JianQi Yang <yangj@...orola.com>,
        Yanjune Tian <tianyje@...orola.com>
Subject: An cma optimization patch is used for cma_[alloc|free].

Pre-allocate CMA memory that configured in device
tree, this greatly improves the CMA memory
allocation efficiency, cma_[alloc|free] is less
than 1ms, old way is took a few ms to tens or
hundreds ms.

Thanks.

Best Regards,

Zou Jichao 邹纪超
Advisory Engineer, SW BSP
MBG ROW SW BJ PF BSP (CN)
Motorola Mobility, A Lenovo Company
motorola.com 





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