[PATCH v2 01/28] coresight: Change device mode to atomic type

[Leo Yan]

On Tue, Jul 15, 2025 at 12:23:22PM +0530, Anshuman Khandual wrote:
> On 01/07/25 8:23 PM, Leo Yan wrote:
> > The device mode is defined as local type. This type cannot promise
> > SMP-safe access.
> > 
> > Change to atomic type and impose relax ordering, which ensures the
> > SMP-safe synchronisation and the ordering between the mode setting and
> > relevant operations.
> 
> 
> But have we really faced such problems on real systems due to local_t
> or this is just an improvement ?

This is an improvement based on reading code. The reason is the
variable is accessed by mutliple CPUs but not per-CPU access.

Thanks,
Leo