Re: [tip:sched/urgent] sched: Restore printk sanity

From: Ingo Molnar
Date: Fri Dec 25 2009 - 13:45:43 EST



* Pavel Machek <pavel@xxxxxx> wrote:

> On Sun 2009-12-20 18:00:38, tip-bot for Peter Zijlstra wrote:
> > Commit-ID: 6c9a74afc5d95321e33a727b3c563f3e7d6c4a5c
> > Gitweb: http://git.kernel.org/tip/6c9a74afc5d95321e33a727b3c563f3e7d6c4a5c
> > Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> > AuthorDate: Sun, 20 Dec 2009 14:23:57 +0100
> > Committer: Ingo Molnar <mingo@xxxxxxx>
> > CommitDate: Sun, 20 Dec 2009 18:45:57 +0100
> >
> > sched: Restore printk sanity
> >
> > Revert the braindead pr_* crap. (Commit 663997d "sched: Use
> > pr_fmt() and pr_<level>()")
> >
> > It's dumb and causes stupid "sched: " strings all over the place.
>
> It seems rest of kernel is moving towards pr_*. [...]

Git stats do not agree with you:

- for every pr_*() line in the kernel source code there's more than 6
printk's:

$ git grep '\<pr_' | wc -l
10861
$ git grep '\<printk' | wc -l
61126

- in the last stable kernel, v2.6.32, still more new printk()s were
introduced than pr_*() lines:

$ git log -p v2.6.31..v2.6.32 | grep '^+.*\<pr_' | wc -l
2016
$ git log -p v2.6.31..v2.6.32 | grep '^+.*\<printk' | wc -l
3531

An estimated completion of the 'conversion' to pr_*() to be in infinite number
of years.

> [...] just removing the "sched:" would be better for consistency.
>
> Or alternatively... deprecate pr_*?

Or alternatively, my favorite: let people who write the code use whichever
variant they prefer.

Ingo
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