On Thu, 13 May 2021 14:53:49 +0530, Vaibhav Jain wrote:
In case performance stats for an nvdimm are not available, reading the
'perf_stats' sysfs file returns an -ENOENT error. A better approach is
to make the 'perf_stats' file entirely invisible to indicate that
performance stats for an nvdimm are unavailable.
So this patch updates 'papr_nd_attribute_group' to add a 'is_visible'
callback implemented as newly introduced 'papr_nd_attribute_visible()'
that returns an appropriate mode in case performance stats aren't
supported in a given nvdimm.
[...]
Applied to powerpc/next.
[1/1] powerpc/papr_scm: Make 'perf_stats' invisible if perf-stats unavailable
https://git.kernel.org/powerpc/c/ed78f56e1271f108e8af61baeba383dcd77adbec
cheers