Re: [uml-devel] [PATCH v5] um: Add a high resolution timer subsystem

2015-05-05 Thread Anton Ivanov
On 05/05/15 08:00, Thomas Meyer wrote: > >> Am 04.05.2015 um 18:22 schrieb Anton Ivanov : >> >> Hi Thomas, > Hi Anton, > >> I read it and like it except idle sleep. See my comments inline. I >> killed that nanosleep quite on purpose :) > Okay. I think I understand now. > >> With what you

Re: [uml-devel] [PATCH v5] um: Add a high resolution timer subsystem

2015-05-05 Thread Thomas Meyer
> Am 04.05.2015 um 18:22 schrieb Anton Ivanov : > > Hi Thomas, Hi Anton, > > I read it and like it except idle sleep. See my comments inline. I > killed that nanosleep quite on purpose :) Okay. I think I understand now. > > With what you did to the tramp the issue of userspace sta

Re: [uml-devel] [PATCH v5] um: Add a high resolution timer subsystem

2015-05-04 Thread Anton Ivanov
Hi Thomas, I read it and like it except idle sleep. See my comments inline. I killed that nanosleep quite on purpose :) With what you did to the tramp the issue of userspace stalling should go away by the way (in theory). I think that it will still show a very HZ behavior, but IMHO t

Re: [uml-devel] [PATCH v5] um: Add a high resolution timer subsystem

2015-05-03 Thread Anton Ivanov
Hi Thomas, I need to read it in detail - this is based on quickly scanning through it. Based on my "experimental" notes, if you do not have a periodic timer setup in that part you have commented and marked as FIXME userspace at some point hangs (at least used to in 2.6.31 to 3.4, I have not tri

Re: [uml-devel] [PATCH v5] um: Add a high resolution timer subsystem

2015-05-03 Thread Thomas Meyer
Am Samstag, den 02.05.2015, 12:08 +0100 schrieb Anton Ivanov: > On 02/05/15 10:48, Thomas Meyer wrote: > > Hi, > > > > I did port Anton's v4 patch to v4.1-rc1-56-g3d99e3f and run it the last > > two days. > > > > Original v4 from Anton can be found here: > > https://sourceforge.net/p/user-mode-linu

Re: [uml-devel] [PATCH v5] um: Add a high resolution timer subsystem

2015-05-02 Thread Anton Ivanov
On 02/05/15 10:48, Thomas Meyer wrote: > Hi, > > I did port Anton's v4 patch to v4.1-rc1-56-g3d99e3f and run it the last > two days. > > Original v4 from Anton can be found here: > https://sourceforge.net/p/user-mode-linux/mailman/message/32856805/ > > Issues addressed in v5 version: > - Ported

[uml-devel] [PATCH v5] um: Add a high resolution timer subsystem

2015-05-02 Thread Thomas Meyer
Hi, I did port Anton's v4 patch to v4.1-rc1-56-g3d99e3f and run it the last two days. Original v4 from Anton can be found here: https://sourceforge.net/p/user-mode-linux/mailman/message/32856805/ Issues addressed in v5 version: - Ported to v4.1-rc1-56-g3d99e3f - Replaced IRQF_DISABLED with IRQF