Re: [PATCH] watchdog/hardlockup: Avoid large stack frames in watchdog_hardlockup_check()

[Michal Hocko]

On Tue 01-08-23 08:41:49, Doug Anderson wrote:
[...]
> Ah, I see what you mean. The one issue I have with your solution is
> that the ordering of the stack crawls is less ideal in the "dump all"
> case when cpu != this_cpu. We really want to see the stack crawl of
> the locked up CPU first and _then_ see the stack crawls of other CPUs.
> With your solution the locked up CPU will be interspersed with all the
> others and will be harder to find in the output (you've got to match
> it up with the "Watchdog detected hard LOCKUP on cpu N" message).
> While that's probably not a huge deal, it's nicer to make the output
> easy to understand for someone trying to parse it...

Is it worth to waste memory for this arguably nicer output? Identifying
the stack of the locked up CPU is trivial. 
-- 
Michal Hocko
SUSE Labs