Re: [1/6] powerpc: NMI IPI improve lock primitive

On Wed, 2017-08-09 at 12:41:21 UTC, Nicholas Piggin wrote:

When the NMI IPI lock is contended, spin at low SMT priority, using
loads only, and with interrupts enabled (where possible). This
improves behaviour under high contention (e.g., a system crash when
a number of CPUs are trying to enter the debugger).

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

Series applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/0459ddfdb31e7d812b555a2530ecba

cheers