Messages in this thread | | | Subject | Re: [Intel-wired-lan] [PATCH v3 09/18] fm10k: Eliminate duplicate barriers on weakly-ordered archs | From | Sinan Kaya <> | Date | Fri, 16 Mar 2018 12:33:14 -0400 |
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On 3/16/2018 12:30 PM, Alexander Duyck wrote: > On Fri, Mar 16, 2018 at 9:16 AM, Sinan Kaya <okaya@codeaurora.org> wrote: >> Code includes wmb() followed by writel(). writel() already has a >> barrier on some architectures like arm64. >> >> This ends up CPU observing two barriers back to back before executing >> the register write. >> >> Since code already has an explicit barrier call, changing writel() to >> writel_relaxed(). >> >> Signed-off-by: Sinan Kaya <okaya@codeaurora.org> > > You can update the writel call in fm10k_tx_map as well. > > Of the drivers updated in drivers/net/ethernet/intel/* it looks like > this is the only one that still requires any additional changes.
will do. thanks for the feedback.
> > Thanks. > > - Alex >
-- Sinan Kaya Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
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