How to choose format specifier for boolean variables in Linux kernel?

[慕冬亮]

On Mon, May 24, 2021 at 10:39 PM Fox Chen <foxhlchen at gmail.com> wrote:
>
> On Mon, May 24, 2021 at 10:27 PM 慕冬亮 <mudongliangabcd at gmail.com> wrote:
> >
> > On Mon, May 24, 2021 at 10:22 PM Fox Chen <foxhlchen at gmail.com> wrote:
> > >
> > > On Mon, May 24, 2021 at 6:51 PM 慕冬亮 <mudongliangabcd at gmail.com> wrote:
> > > >
> > > > Hi all,
> > > >
> > > > how do I choose format specifier for boolean variables in Linux
> > > > kernel? For example,
> > > >
> > > > bool bup;
> > > > pr_alert("%XXX", bup);
> > > >
> > > > What should "XXX" be in the Linux kernel?
> > > >
> > > > --
> > > > My best regards to you.
> > > >
> > > >      No System Is Safe!
> > > >      Dongliang Mu
> > > >
> > > > _______________________________________________
> > > > Kernelnewbies mailing list
> > > > Kernelnewbies at kernelnewbies.org
> > > > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
> > >
> > > Check commit 6e21828743 ("Generic boolean")
> > > IIUC bool is defined as Bool_. You can treat it as an integer with the
> > > value 0 or 1.
> >
> > You mean I can directly print boolean variable with "%d"?
> >
> yes, or if you want it to be more readable, you can do
> pr_alert("%s", bup ? "true":"false");
>

Thanks. This is really helpful.

> > >
> > >
> > > thanks,
> > > fox
>
> fox