Re: [PATCH 1/4] panic: Add panic_in_progress helper

[Petr Mladek]

On Fri 2022-01-21 11:02:19, Stephen Brennan wrote:

Please, add explanation why the new helper is added. It will be
used in printk code to reduce risk of deadlocks during panic().

> Suggested-by: Petr Mladek <pmladek@xxxxxxxx>
> Signed-off-by: Stephen Brennan <stephen.s.brennan@xxxxxxxxxx>
> ---
> We cannot define a static inline without including linux/atomic.h, so
> I just added a macro for convenience in later patches. Since macros were
> the only option, I didn't include a helper for
> panic_in_progress_different_cpu().

What is the exact problem with including atomic.h and using static
inline, please?

IMHO, the define is not a real solution. The macro won't be usable
without including atomic.h. So, it would work only by chance.

But it is possible that I miss something.

Best Regards,
Petr