On 29.08.2024 00:03, Andrew Cooper wrote:
> All of the ffs()/fls() infrastructure is in fact (attr) const, because it
> doesn't even read global state.  This allows the compiler even more
> flexibility to optimise.
> 
> No functional change.
> 
> Reported-by: Jan Beulich <jbeul...@suse.com>
> Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
> ---
> CC: Jan Beulich <jbeul...@suse.com>
> CC: Roger Pau Monné <roger....@citrix.com>
> CC: Stefano Stabellini <sstabell...@kernel.org>
> CC: Julien Grall <jul...@xen.org>
> CC: Volodymyr Babchuk <volodymyr_babc...@epam.com>
> CC: Bertrand Marquis <bertrand.marq...@arm.com>
> CC: Michal Orzel <michal.or...@amd.com>
> CC: Oleksii Kurochko <oleksii.kuroc...@gmail.com>
> CC: Shawn Anastasio <sanasta...@raptorengineering.com>
> 
> v2:
>  * New
> ---
>  xen/include/xen/bitops.h | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)

The various arch_* forms didn't have __pure and hence also don't gain
attr_const presumably because we deem these attributes ineffectual for
always-inline functions? On that basis
Reviewed-by: Jan Beulich <jbeul...@suse.com>

Jan

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