Em Mon, Jun 07, 2021 at 05:29:55PM +0200, Peter Zijlstra escreveu:

On Wed, Jun 02, 2021 at 06:30:04PM +0800, Leo Yan wrote:

quoted

The kernel and the userspace tool can access the AUX ring buffer head
and tail from different CPUs, thus SMP class of barriers are required
on SMP system.

This patch changes to use SMP barriers to replace mb() and rmb()
barriers.

Signed-off-by: Leo Yan <redacted>

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

Thanks, applied.

- Arnaldo