[PATCH v10 00/20] CoreSight: Refactor power management for CoreSight path

Leo Yan leo.yan at arm.com
Mon Apr 13 23:09:06 PDT 2026


On Tue, Apr 14, 2026 at 11:30:39AM +0800, Jie Gan wrote:

[...]

> > > Tested-by: Jie Gan <jie.gan at oss.qualcomm.com>
> > 
> > Just heads up: since Sashiko [1] pointed out a corner case where an SMP call
> > may fail when disabling the source device, the per-CPU path pointer
> > might not be cleared.  If the ETMv4 device is then removed (e.g. if the
> > user unloads the ETMv4 module), CPU PM notifier might access the stale
> > path pointer.  Though this is a rare case, we should handle it safely.
> > This is why the series was not picked for the v7.1 merge window.
> > 
> > Thanks a lot for the testing, Jie! It's very helpful, and I will add
> > your test tags in the next spin.
> > 
> > Anyway, please expect more iterations.
> 
> Noted, will run the test cases on new iterations.

Thank you!



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