On 25/07/2022 20:39, Andrew Morton wrote:

On Thu, 21 Jul 2022 20:55:09 +0100 Ben Dooks [off-list ref] wrote:

quoted

The setup_profiling_timer() is mostly un-implemented by many
architectures. In many places it isn't guarded by CONFIG_PROFILE
which is needed for it to be used. Make it a weak symbol in
kernel/profile.c and remove the 'return -EINVAL' implementations
from the kenrel.

There are a couple of architectures which do return 0 from
the setup_profiling_timer() function but they don't seem to
do anything else with it. To keep the /proc compatibility for
now, leave these for a future update or removal.

On ARM, this fixes the following sparse warning:
arch/arm/kernel/smp.c:793:5: warning: symbol 'setup_profiling_timer' was not declared. Should it be static?

I'll grab this.

We have had some problems with weak functions lately.  See

https://lore.kernel.org/all/87ee0q7b92.fsf@email.froward.int.ebiederm.org/T/#u (local)

Hopefully that was a rare corner case.

Great, thanks.

-- 
Ben Dooks				http://www.codethink.co.uk/
Senior Engineer				Codethink - Providing Genius

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