| Date | Mon, 24 Sep 2018 12:07:22 +0200 | From | Thierry Reding <> | Subject | Re: [PATCH v4 05/20] iommu/tegra: gart: Optimize mapping / unmapping performance |
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On Mon, Sep 24, 2018 at 03:41:38AM +0300, Dmitry Osipenko wrote: > Currently GART writes one page entry at a time. More optimal would be to > aggregate the writes and flush BUS buffer in the end, this gives map/unmap > 10-40% performance boost (depending on size of mapping) in comparison to > flushing after each page entry update. > > Signed-off-by: Dmitry Osipenko <digetx@gmail.com> > --- > drivers/iommu/tegra-gart.c | 12 ++++++++++-- > 1 file changed, 10 insertions(+), 2 deletions(-)
10-40% sounds really nice, great stuff:
Acked-by: Thierry Reding <treding@nvidia.com> [unhandled content-type:application/pgp-signature] |