Re: [RFC] printk: allow increasing the ring buffer depending on the number of CPUs

2014-06-16 Thread Chris Metcalf
On 6/12/2014 2:45 PM, Joe Perches wrote: (adding Chris Metcalf for arch/tile, I think this change might impact that arch) Thanks for the Cc. I've been following the discussion and I think it's on the right track for arch/tile. -- Chris Metcalf, Tilera Corp. http://www.tilera.com -- To uns

Re: [RFC] printk: allow increasing the ring buffer depending on the number of CPUs

2014-06-12 Thread Luis R. Rodriguez
On Thu, Jun 12, 2014 at 11:45 AM, Joe Perches wrote: > > trivia: s/loosing/losing/ Amended, thanks. Luis -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-inf

Re: [RFC] printk: allow increasing the ring buffer depending on the number of CPUs

2014-06-12 Thread Luis R. Rodriguez
On Thu, Jun 12, 2014 at 11:01 AM, Davidlohr Bueso wrote: > On Wed, 2014-06-11 at 11:34 +0200, Petr Mládek wrote: >> On Tue 2014-06-10 18:04:45, Luis R. Rodriguez wrote: >> > From: "Luis R. Rodriguez" >> > >> > The default size of the ring buffer is too small for machines >> > with a large amount

Re: [RFC] printk: allow increasing the ring buffer depending on the number of CPUs

2014-06-12 Thread Luis R. Rodriguez
On Thu, Jun 12, 2014 at 03:05:32PM +0200, Petr Mládek wrote: > On Wed 2014-06-11 23:47:41, Luis R. Rodriguez wrote: > > On Wed, Jun 11, 2014 at 11:34:47AM +0200, Petr Mládek wrote: > > > On Tue 2014-06-10 18:04:45, Luis R. Rodriguez wrote: > > > > From: "Luis R. Rodriguez" > > > > diff --git a/ini

Re: [RFC] printk: allow increasing the ring buffer depending on the number of CPUs

2014-06-12 Thread Joe Perches
(adding Chris Metcalf for arch/tile, I think this change might impact that arch) On Thu, 2014-06-12 at 11:01 -0700, Davidlohr Bueso wrote: > On Wed, 2014-06-11 at 11:34 +0200, Petr Mládek wrote: > > On Tue 2014-06-10 18:04:45, Luis R. Rodriguez wrote: > > > From: "Luis R. Rodriguez" > > > > > >

Re: [RFC] printk: allow increasing the ring buffer depending on the number of CPUs

2014-06-12 Thread Davidlohr Bueso
On Wed, 2014-06-11 at 11:34 +0200, Petr Mládek wrote: > On Tue 2014-06-10 18:04:45, Luis R. Rodriguez wrote: > > From: "Luis R. Rodriguez" > > > > The default size of the ring buffer is too small for machines > > with a large amount of CPUs under heavy load. What ends up > > happening when debug

Re: [RFC] printk: allow increasing the ring buffer depending on the number of CPUs

2014-06-12 Thread Petr Mládek
On Wed 2014-06-11 23:47:41, Luis R. Rodriguez wrote: > On Wed, Jun 11, 2014 at 11:34:47AM +0200, Petr Mládek wrote: > > On Tue 2014-06-10 18:04:45, Luis R. Rodriguez wrote: > > > From: "Luis R. Rodriguez" > > > diff --git a/init/Kconfig b/init/Kconfig > > > index 9d3585b..1814436 100644 > > > ---

Re: [RFC] printk: allow increasing the ring buffer depending on the number of CPUs

2014-06-11 Thread Luis R. Rodriguez
On Wed, Jun 11, 2014 at 11:34:47AM +0200, Petr Mládek wrote: > On Tue 2014-06-10 18:04:45, Luis R. Rodriguez wrote: > > From: "Luis R. Rodriguez" > > diff --git a/init/Kconfig b/init/Kconfig > > index 9d3585b..1814436 100644 > > --- a/init/Kconfig > > +++ b/init/Kconfig > > @@ -806,6 +806,34 @@ co

Re: [RFC] printk: allow increasing the ring buffer depending on the number of CPUs

2014-06-11 Thread Petr Mládek
On Tue 2014-06-10 18:04:45, Luis R. Rodriguez wrote: > From: "Luis R. Rodriguez" > > The default size of the ring buffer is too small for machines > with a large amount of CPUs under heavy load. What ends up > happening when debugging is the ring buffer overlaps and chews > up old messages making