Re: [PATCH v7 6/7] bnxt_en: Eliminate duplicate barriers on weakly-ordered archs

On Sun, Mar 25, 2018 at 7:39 AM, Sinan Kaya 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. > > Create a new

Re: [PATCH v7 6/7] bnxt_en: Eliminate duplicate barriers on weakly-ordered archs

On Sun, Mar 25, 2018 at 7:39 AM, Sinan Kaya 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. > > Create a new wrapper function with

[PATCH v7 6/7] bnxt_en: Eliminate duplicate barriers on weakly-ordered archs

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. Create a new wrapper function with relaxed write operator. Use the new wrapper when a write is

[PATCH v7 6/7] bnxt_en: Eliminate duplicate barriers on weakly-ordered archs

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. Create a new wrapper function with relaxed write operator. Use the new wrapper when a write is