| Date | Wed, 11 Nov 2020 09:00:46 -0800 | From | Andi Kleen <> | Subject | Re: [PATCH 24/24] perf record: Add --buildid-mmap option to enable mmap's build id |
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On Mon, Nov 09, 2020 at 10:54:15PM +0100, Jiri Olsa wrote: > Adding --buildid-mmap option to enable build id in mmap2 events. > It will only work if there's kernel support for that and it disables > build id cache (implies --no-buildid).
What's the point of the option? Why not enable it by default if the kernel supports it?
With the option most user won't get the benefit.
The only reason I can think of for an option would be to disable so that old tools can still process.
-Andi
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