On Tue, 28 Jul 2020 12:37:41 -0500, Nathan Lynch wrote:
> The drmem lmb list can have hundreds of thousands of entries, and
> unfortunately lookups take the form of linear searches. As long as
> this is the case, traversals have the potential to monopolize the CPU
> and provoke lockup reports, workqueue stalls, and the like unless
> they explicitly yield.
>
> Rather than placing cond_resched() calls within various
> for_each_drmem_lmb() loop blocks in the code, put it in the iteration
> expression of the loop macro itself so users can't omit it.
Applied to powerpc/next.
[1/1] powerpc/pseries: explicitly reschedule during drmem_lmb list traversal
https://git.kernel.org/powerpc/c/9d6792ffe140240ae54c881cc4183f9acc24b4df
cheers
