Re: [PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2015-03-17 Thread Ian Malone
On 17 March 2015 at 08:22, Ingo Molnar wrote: > > * Ian Malone wrote: > >> Looks like Ingo Molnar has committed to tip which is probably a good >> sign, thanks all. >> (Have to hand this system on to someone who wont be patching kernels...) > > Guys, since I don't have the affected hardware, min

Re: [PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2015-03-17 Thread Mike Galbraith
On Tue, 2015-03-17 at 09:22 +0100, Ingo Molnar wrote: > * Ian Malone wrote: > > > On 15 March 2015 at 04:53, Mike Galbraith wrote: > > > On Sat, 2015-03-14 at 23:44 +, Ian Malone wrote: > > >> On 18 January 2014 at 16:14, Mike Galbraith wrote: > > >> > On Sat, 2014-01-18 at 10:33 +0100, Mik

Re: [PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2015-03-17 Thread Ingo Molnar
* Ian Malone wrote: > On 15 March 2015 at 04:53, Mike Galbraith wrote: > > On Sat, 2015-03-14 at 23:44 +, Ian Malone wrote: > >> On 18 January 2014 at 16:14, Mike Galbraith wrote: > >> > On Sat, 2014-01-18 at 10:33 +0100, Mike Galbraith wrote: > >> >> On Fri, 2014-01-17 at 05:20 +0100, Mik

Re: [PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2015-03-16 Thread Ian Malone
On 15 March 2015 at 04:53, Mike Galbraith wrote: > On Sat, 2015-03-14 at 23:44 +, Ian Malone wrote: >> On 18 January 2014 at 16:14, Mike Galbraith wrote: >> > On Sat, 2014-01-18 at 10:33 +0100, Mike Galbraith wrote: >> >> On Fri, 2014-01-17 at 05:20 +0100, Mike Galbraith wrote: >> >> > Signed

Re: [PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2015-03-14 Thread Mike Galbraith
On Sat, 2015-03-14 at 23:44 +, Ian Malone wrote: > On 18 January 2014 at 16:14, Mike Galbraith wrote: > > On Sat, 2014-01-18 at 10:33 +0100, Mike Galbraith wrote: > >> On Fri, 2014-01-17 at 05:20 +0100, Mike Galbraith wrote: > > > Signed-off-by: Mike Galbraith > > Cc: # 3.10+ > > --- > > a

Re: [PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2015-03-14 Thread Ian Malone
On 18 January 2014 at 16:14, Mike Galbraith wrote: > On Sat, 2014-01-18 at 10:33 +0100, Mike Galbraith wrote: >> On Fri, 2014-01-17 at 05:20 +0100, Mike Galbraith wrote: > Signed-off-by: Mike Galbraith > Cc: # 3.10+ > --- > arch/x86/kernel/process.c |9 ++--- > 1 file changed, 6 insert

Re: [PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2014-01-18 Thread Mike Galbraith
On Sat, 2014-01-18 at 10:33 +0100, Mike Galbraith wrote: > On Fri, 2014-01-17 at 05:20 +0100, Mike Galbraith wrote: > > > taskset 0xc pipe-test 1 > > > > 3.8.13 3.397977 usecs/loop -- avg 3.400336 588.2 KHz > > master+4.798547 usecs/loop -- avg 4.791692 417.4 KHz > > Bah, those are appl

Re: [PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2014-01-18 Thread Mike Galbraith
On Fri, 2014-01-17 at 05:20 +0100, Mike Galbraith wrote: > taskset 0xc pipe-test 1 > > 3.8.13 3.397977 usecs/loop -- avg 3.400336 588.2 KHz > master+4.798547 usecs/loop -- avg 4.791692 417.4 KHz Bah, those are apple/grape, these are apple/apple. idle: kill unnecessary mwait_idle() resch

Re: [PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2014-01-16 Thread Mike Galbraith
On Thu, 2014-01-16 at 14:00 -0800, Andy Lutomirski wrote: > On 01/14/2014 09:37 PM, Len Brown wrote: > > From: Len Brown > > > > In Linux-3.9 we removed the mwait_idle() loop: > > 'x86 idle: remove mwait_idle() and "idle=mwait" cmdline param' > > (69fb3676df3329a7142803bb3502fa59dc0db2e3) > > >

Re: [PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2014-01-16 Thread Andy Lutomirski
On 01/14/2014 09:37 PM, Len Brown wrote: > From: Len Brown > > In Linux-3.9 we removed the mwait_idle() loop: > 'x86 idle: remove mwait_idle() and "idle=mwait" cmdline param' > (69fb3676df3329a7142803bb3502fa59dc0db2e3) > > The reasoning was that modern machines should be sufficiently > happy du

Re: [PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2014-01-15 Thread Mike Galbraith
On Wed, 2014-01-15 at 00:37 -0500, Len Brown wrote: > From: Len Brown > > In Linux-3.9 we removed the mwait_idle() loop: > 'x86 idle: remove mwait_idle() and "idle=mwait" cmdline param' > (69fb3676df3329a7142803bb3502fa59dc0db2e3) > > The reasoning was that modern machines should be sufficientl

[PATCH REGRESSION FIX] x86 idle: restore mwait_idle()

2014-01-14 Thread Len Brown
From: Len Brown In Linux-3.9 we removed the mwait_idle() loop: 'x86 idle: remove mwait_idle() and "idle=mwait" cmdline param' (69fb3676df3329a7142803bb3502fa59dc0db2e3) The reasoning was that modern machines should be sufficiently happy during the boot process using the default_idle() HALT loop,