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| Started by | Geert Uytterhoeven <geert@linux-m68k.org> |
|---|---|
| First post | 2015-06-29 23:00 +0200 |
| Last post | 2015-06-29 23:00 +0200 |
| Articles | 1 — 1 participant |
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Re: [PATCH tip/core/rcu 24/24] rcu: Conditionally compile RCU's eqs warnings Geert Uytterhoeven <geert@linux-m68k.org> - 2015-06-29 23:00 +0200
| From | Geert Uytterhoeven <geert@linux-m68k.org> |
|---|---|
| Date | 2015-06-29 23:00 +0200 |
| Subject | Re: [PATCH tip/core/rcu 24/24] rcu: Conditionally compile RCU's eqs warnings |
| Message-ID | <pGOjM-5WS-13@gated-at.bofh.it> |
Hi Paul,
On Mon, Jun 29, 2015 at 10:55 PM, Paul E. McKenney
<paulmck@linux.vnet.ibm.com> wrote:
> On Mon, Jun 29, 2015 at 11:39:13AM +0200, Geert Uytterhoeven wrote:
>> On Wed, May 13, 2015 at 12:30 AM, Paul E. McKenney
>> <paulmck@linux.vnet.ibm.com> wrote:
>> > --- a/lib/Kconfig.debug
>> > +++ b/lib/Kconfig.debug
>> > @@ -1373,6 +1373,17 @@ config RCU_TRACE
>> > Say Y here if you want to enable RCU tracing
>> > Say N if you are unsure.
>> >
>> > +config RCU_EQS_DEBUG
>> > + bool "Use this when adding any sort of NO_HZ support to your arch"
>>
>> This sounds a bit fuzzy. Can you please provide a better one-line description?
>> Thanks!
>
> So the point of this Kconfig option is to provide WARN_ON()s that catch
> bug such as telling RCU that a given CPU entered idle, but failing to
> tell RCU when that CPU later leaves idle. So how about this?
>
> + bool "Provide debugging asserts for adding NO_HZ support to an arch"
Much better, thanks!
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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