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SubjectRe: [RFC: 2.6 patch] build kernel/profile.o only when requested
On Tue, May 20, 2008 at 02:01:21AM -0700, Andrew Morton wrote:
> On Tue, 20 May 2008 00:53:06 +0300 Adrian Bunk <bunk@kernel.org> wrote:
>
> > Build kernel/profile.o only if CONFIG_PROFILING is enabled.
> >
> > This makes CONFIG_PROFILING=n kernels smaller.
> >
> > As a bonus, some profile_tick() calls and one branch from schedule() are
> > now eliminated with CONFIG_PROFILING=n (but I doubt these are
> > measurable effects).
> >
> > This patch changes the effects of CONFIG_PROFILING=n, but I don't think
> > having more than two choices would be the better choice.
> >
> > This patch also adds the name of the first parameter to the prototypes
> > of profile_{hits,tick}() since I anyway had to add them for the dummy
> > functions.
> >
>
> Little nits:
>
> > index 05c1cc7..4081fa3 100644
> > --- a/include/linux/profile.h
> > +++ b/include/linux/profile.h
> > @@ -8,8 +8,6 @@
> >
> > #include <asm/errno.h>
> >
> > -extern int prof_on __read_mostly;
> > -
> > #define CPU_PROFILING 1
> > #define SCHED_PROFILING 2
> > #define SLEEP_PROFILING 3
> > @@ -19,14 +17,29 @@ struct proc_dir_entry;
> > struct pt_regs;
> > struct notifier_block;
> >
> > +#if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
> > +void create_prof_cpu_mask(struct proc_dir_entry *);
>
> This omits the argument's name, whereas elsewhere you have taken care
> to introduce the name where it was missing.
>
> > +#else
> > +#define create_prof_cpu_mask(x) do { (void)(x); } while (0)
>
> I think this could be a static inline, which is neater.
>...

In these two cases I only moved code.

And I actually moved the other code and git just decided to move the
code that stayed instead since it creates less changed lines...

cu
Adrian

--

"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed



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