Re: [PATCH -tip 0/4] do not make cputime scaling in kernel

2013-04-11 Thread Frederic Weisbecker
On Mon, Apr 08, 2013 at 05:32:50PM +0200, Ingo Molnar wrote: > > * Frederic Weisbecker wrote: > > > 2013/4/4 Stanislaw Gruszka : > > > On Thu, Apr 04, 2013 at 02:31:42PM +0200, Frederic Weisbecker wrote: > > >> I don't know. I'm not convinced userland is the right place to perform > > >> this ki

Re: [PATCH -tip 0/4] do not make cputime scaling in kernel

2013-04-08 Thread Ingo Molnar
* Frederic Weisbecker wrote: > 2013/4/4 Stanislaw Gruszka : > > On Thu, Apr 04, 2013 at 02:31:42PM +0200, Frederic Weisbecker wrote: > >> I don't know. I'm not convinced userland is the right place to perform > >> this kind of check. The kernel perhaps doesn't give guarantee about > >> utime/sti

Re: [PATCH -tip 0/4] do not make cputime scaling in kernel

2013-04-05 Thread Stanislaw Gruszka
On Thu, Apr 04, 2013 at 03:47:19PM +0200, Frederic Weisbecker wrote: > 2013/4/4 Stanislaw Gruszka : > > On Thu, Apr 04, 2013 at 02:31:42PM +0200, Frederic Weisbecker wrote: > >> I don't know. I'm not convinced userland is the right place to perform > >> this kind of check. The kernel perhaps doesn'

Re: [PATCH -tip 0/4] do not make cputime scaling in kernel

2013-04-04 Thread Frederic Weisbecker
2013/4/4 Stanislaw Gruszka : > On Thu, Apr 04, 2013 at 02:31:42PM +0200, Frederic Weisbecker wrote: >> I don't know. I'm not convinced userland is the right place to perform >> this kind of check. The kernel perhaps doesn't give guarantee about >> utime/stime precision but now users may have got us

Re: [PATCH -tip 0/4] do not make cputime scaling in kernel

2013-04-04 Thread Stanislaw Gruszka
On Thu, Apr 04, 2013 at 02:31:42PM +0200, Frederic Weisbecker wrote: > 2013/4/4 Stanislaw Gruszka : > > This patch series removes cputime scaling from kernel. It can be easily > > done in user space using floating point if we provide sum_exec_runtime, > > what patches 2/4 and 3/4 do. I have procps

Re: [PATCH -tip 0/4] do not make cputime scaling in kernel

2013-04-04 Thread Frederic Weisbecker
2013/4/4 Stanislaw Gruszka : > This patch series removes cputime scaling from kernel. It can be easily > done in user space using floating point if we provide sum_exec_runtime, > what patches 2/4 and 3/4 do. I have procps patch which utilize that: > > http://people.redhat.com/sgruszka/procps-use-su

[PATCH -tip 0/4] do not make cputime scaling in kernel

2013-04-04 Thread Stanislaw Gruszka
This patch series removes cputime scaling from kernel. It can be easily done in user space using floating point if we provide sum_exec_runtime, what patches 2/4 and 3/4 do. I have procps patch which utilize that: http://people.redhat.com/sgruszka/procps-use-sum_exec_runtime.patch I will post it,