On Tue, May 05, 2020 at 01:43:51PM +0100, Russell King - ARM Linux admin wrote:

On Tue, May 05, 2020 at 11:44:55AM +0100, Will Deacon wrote:

quoted

Michael has been nagging me on and off about that for, what, 10 years now?
I would therefore be very much in favour of having our ptrace extensions
documented!

We could even put this stuff under Documentation/arm64/man/ if it's deemed
too CPU-specific for the man-pages project, but my preference would still
be for it to be hosted there alongside all the other man pages.

Stuffing random things into the kernel tree is painful for some people.

For example, if you cross-build your kernel, then the stuff in the
tools/ subdirectory is totally useless (I think everything except
perf) because you can't build it.

Let's stop making the mistake of constantly shoving stuff into the
kernel source tree.

For userspace tools, I'm inclined to agree, but this is just documentation
so it shouldn't cause any issues with cross building. But to be clear: I'd
still prefer it to be part of the man-pages project, and would only consider
it for inclusion in the kernel tree if it was rejected for being too
CPU-specific.

Will

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