Re: [PATCH v4 02/10] coresight: etm-perf: Remove workqueue for freeing AUX data

On Fri, Oct 16, 2026 at 11:46:12AM +0100, James Clark wrote:

AUX cleanup is deferred to a workqueue which is never flushed on module unload. Pending work items can therefore run after coresight-config is cleaned up or the module text is unloaded.

Since commit 95ff4ca26c49 ("perf/core: Free AUX pages in unmap path"), Perf core stops AUX transactions and frees the PMU AUX data from the unmap path in non-atomic context. Release the resources directly from the free_aux() callback and remove the workqueue.

Fixes: 0bcbf2e30ff2 ("coresight: etm-perf: new PMU driver for ETM tracers") Signed-off-by: James Clark james.clark@linaro.org

Reviewed-by: Leo Yan leo.yan@arm.com