RE: [PATCH v2 1/2] jiffies: Define secs_to_jiffies()

From: David Laight
Date: Wed Nov 06 2024 - 17:20:12 EST


From: Thomas Gleixner
> Sent: 29 October 2024 17:25
>
> On Tue, Oct 29 2024 at 17:22, Geert Uytterhoeven wrote:
> > On Tue, Oct 29, 2024 at 5:08 PM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
> >> On Mon, Oct 28 2024 at 19:11, Easwar Hariharan wrote:
> >> > diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
> >> > index 1220f0fbe5bf..e5256bb5f851 100644
> >> > --- a/include/linux/jiffies.h
> >> > +++ b/include/linux/jiffies.h
> >> > @@ -526,6 +526,8 @@ static __always_inline unsigned long msecs_to_jiffies(const unsigned int m)
> >> > }
> >> > }
> >> >
> >> > +#define secs_to_jiffies(_secs) ((_secs) * HZ)
> >>
> >> Can you please make that a static inline, as there is no need for macro
> >> magic like in the other conversions, and add a kernel doc comment which
> >> documents this?
> >
> > Note that a static inline means it cannot be used in e.g. struct initializers,
> > which are substantial users of "<value> * HZ".
>
> Bah. That wants to be mentioned in the change log then.
>
> Still the macro should be documented.

I was wondering if it really had any purpose at all.
It just obfuscates code, doesn't even make it smaller.

David

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