Re: [PATCH v4 14/18] static_call: Add static_cond_call()

[Mathieu Desnoyers]

----- On May 5, 2020, at 2:48 PM, Linus Torvalds torvalds@xxxxxxxxxxxxxxxxxxxx wrote:
[...]
> 
> Your initial reaction that "you can't compile away the read and the
> test of NULL" was correct, I think.

I suspect this pattern of "if (func != NULL) func(...)" could be semantically
changed to just invoking an empty function which effectively does nothing.
This would remove the need to do a pointer check in the first place. But maybe
I'm missing something subtle about why it has not been done in this context.

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com