Re: [PATCH 2/9] perf debuginfo: Fetch debuginfo keyed by build ID using debuginfod

[sashiko-bot@kernel.org]

> From: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> perf already uses debuginfod to fetch source files when annotating
> (via probe-finder.c) and 'perf probe' has open_from_debuginfod(),
> which queries debuginfo keyed by build ID when a module's debuginfo
> isn't found locally, largely the same thing this adds; eventually
> that one could be moved over to the new helper.  For the analysis
> tools there was no way to obtain the debuginfo for a DSO in a
> profile when it isn't available locally under the name the DSO was
> opened with, for instance the vmlinux for the kernel a profile was
> recorded on when processing it on another machine, or after the
> kernel and its debuginfo package got upgraded in between.
> 
> Add debuginfo__find_build_id(), that uses the debuginfod client to
> locate a debuginfo file keyed by the build ID, checking its local
> [ ... ]
> that make NO_LIBDW=1 on a system that has the debuginfod client
> keeps linking.
> 
> Assisted-by: LLM
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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