Re: [PATCH 01/10] random: make 'add_interrupt_randomness()' do something sane

2012-07-25 Thread Thomas Gleixner
On Fri, 6 Jul 2012, Linus Torvalds wrote: > On Fri, Jul 6, 2012 at 6:01 AM, Theodore Ts'o wrote: > > What in the world is "fast count"? I've grepped for it, > > and I can't find it. > > It's your own fast-pool counter that Matt was talking about. > > > I can simply not credit entropy of the ti

Re: [PATCH 01/10] random: make 'add_interrupt_randomness()' do something sane

2012-07-09 Thread Matt Mackall
On Fri, 2012-07-06 at 12:52 -0400, Theodore Ts'o wrote: > On Fri, Jul 06, 2012 at 09:24:00AM -0700, Linus Torvalds wrote: > > On Fri, Jul 6, 2012 at 6:01 AM, Theodore Ts'o wrote: > > > What in the world is "fast count"? I've grepped for it, > > > and I can't find it. > > > > It's your own fast-p

Re: [PATCH 01/10] random: make 'add_interrupt_randomness()' do something sane

2012-07-06 Thread Theodore Ts'o
On Thu, Jul 05, 2012 at 03:01:12PM -0400, Eric Wustrow wrote: > Will this do the long path in add_interrupt_randomness every 16 interrupts > instead of 128? Yes, but given that benchmarks didn't show any performance degradation even under a worst case scenario (i.e., no interrupt mitigation, and a

Re: [PATCH 01/10] random: make 'add_interrupt_randomness()' do something sane

2012-07-06 Thread Theodore Ts'o
On Fri, Jul 06, 2012 at 09:24:00AM -0700, Linus Torvalds wrote: > On Fri, Jul 6, 2012 at 6:01 AM, Theodore Ts'o wrote: > > What in the world is "fast count"? I've grepped for it, > > and I can't find it. > > It's your own fast-pool counter that Matt was talking about. When he said "check it aga

Re: [PATCH 01/10] random: make 'add_interrupt_randomness()' do something sane

2012-07-06 Thread Linus Torvalds
On Fri, Jul 6, 2012 at 6:01 AM, Theodore Ts'o wrote: > What in the world is "fast count"? I've grepped for it, > and I can't find it. It's your own fast-pool counter that Matt was talking about. > I can simply not credit entropy of the timer is on the irq, but I > think you and Matt were sugges