Hello,
On Wed, 4 May 2016 15:47:29 +0200, Peter Zijlstra wrote:
> static inline void *kmap_atomic(struct page *page)
> {
> preempt_disable();
> pagefault_disable();
> if (!PageHighMem(page))
> return page_address(page);
>
> return __kmap_atomic(page);
> }
This is essentially what has been done on ARM in commit
9ff0bb5ba60638a688a46e93df8c5009896672eb, showing a pretty significant
improvement in network workloads.
Best regards,
Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
