Re: [PATCH v2 5/8] perf auxtrace: Change to use SMP memory barriers
From: Peter Zijlstra <peterz@infradead.org>
Date: 2021-06-07 15:31:31
Also in:
linux-perf-users, lkml
On Wed, Jun 02, 2021 at 06:30:04PM +0800, Leo Yan wrote:
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> _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel