Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-24 Thread Russell King - ARM Linux
On Wed, Sep 24, 2014 at 11:58:19AM -0500, Nathan Lynch wrote: > On 09/24/2014 09:50 AM, Russell King - ARM Linux wrote: > > On Wed, Sep 24, 2014 at 09:32:54AM -0500, Nathan Lynch wrote: > >> On 09/24/2014 09:12 AM, Christopher Covington wrote: > >>> Hi Nathan, > >>> > >>> On 09/22/2014 08:28 PM, Na

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-24 Thread Nathan Lynch
On 09/24/2014 09:50 AM, Russell King - ARM Linux wrote: > On Wed, Sep 24, 2014 at 09:32:54AM -0500, Nathan Lynch wrote: >> On 09/24/2014 09:12 AM, Christopher Covington wrote: >>> Hi Nathan, >>> >>> On 09/22/2014 08:28 PM, Nathan Lynch wrote: Hmm, this patch set is merely exposing the hardware

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-24 Thread Russell King - ARM Linux
On Wed, Sep 24, 2014 at 04:04:09PM +0100, Catalin Marinas wrote: > On Wed, Sep 24, 2014 at 03:52:57PM +0100, Russell King - ARM Linux wrote: > > I'm *not* arguing against having a VDSO to speed up that crap. What > > I'm trying to get to the bottom of - something which has been totally > > lost si

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-24 Thread Catalin Marinas
On Wed, Sep 24, 2014 at 03:52:57PM +0100, Russell King - ARM Linux wrote: > On Wed, Sep 24, 2014 at 03:45:41PM +0100, Catalin Marinas wrote: > > On Mon, Sep 22, 2014 at 11:30:23PM +0100, Russell King - ARM Linux wrote: > > > I raised a while back with Will whether there's much point to having > > >

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-24 Thread Russell King - ARM Linux
On Wed, Sep 24, 2014 at 03:45:41PM +0100, Catalin Marinas wrote: > On Mon, Sep 22, 2014 at 11:30:23PM +0100, Russell King - ARM Linux wrote: > > I raised a while back with Will whether there's much point to having > > this on ARM. While it's useful for virtualisation, the majority of > > 32-bit AR

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-24 Thread Russell King - ARM Linux
On Wed, Sep 24, 2014 at 09:32:54AM -0500, Nathan Lynch wrote: > On 09/24/2014 09:12 AM, Christopher Covington wrote: > > Hi Nathan, > > > > On 09/22/2014 08:28 PM, Nathan Lynch wrote: > >> Hmm, this patch set is merely exposing the hardware counter when it is > >> present for the VDSO's use; I tak

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-24 Thread Catalin Marinas
On Mon, Sep 22, 2014 at 11:30:23PM +0100, Russell King - ARM Linux wrote: > On Mon, Sep 22, 2014 at 04:39:19PM +0100, Will Deacon wrote: > > On Thu, Sep 18, 2014 at 03:59:32PM +0100, Nathan Lynch wrote: > > > This series contains the necessary changes to allow architected timer > > > access from us

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-24 Thread Nathan Lynch
On 09/24/2014 09:12 AM, Christopher Covington wrote: > Hi Nathan, > > On 09/22/2014 08:28 PM, Nathan Lynch wrote: >> On 09/22/2014 05:30 PM, Russell King - ARM Linux wrote: >>> On Mon, Sep 22, 2014 at 04:39:19PM +0100, Will Deacon wrote: On Thu, Sep 18, 2014 at 03:59:32PM +0100, Nathan Lynch

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-24 Thread Christopher Covington
Hi Nathan, On 09/22/2014 08:28 PM, Nathan Lynch wrote: > On 09/22/2014 05:30 PM, Russell King - ARM Linux wrote: >> On Mon, Sep 22, 2014 at 04:39:19PM +0100, Will Deacon wrote: >>> On Thu, Sep 18, 2014 at 03:59:32PM +0100, Nathan Lynch wrote: This series contains the necessary changes to allo

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-22 Thread Nathan Lynch
On 09/22/2014 05:30 PM, Russell King - ARM Linux wrote: > On Mon, Sep 22, 2014 at 04:39:19PM +0100, Will Deacon wrote: >> On Thu, Sep 18, 2014 at 03:59:32PM +0100, Nathan Lynch wrote: >>> This series contains the necessary changes to allow architected timer >>> access from user-space on 32-bit ARM.

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-22 Thread Russell King - ARM Linux
On Mon, Sep 22, 2014 at 04:39:19PM +0100, Will Deacon wrote: > On Thu, Sep 18, 2014 at 03:59:32PM +0100, Nathan Lynch wrote: > > This series contains the necessary changes to allow architected timer > > access from user-space on 32-bit ARM. This allows the VDSO to support > > high resolution times

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-22 Thread Daniel Lezcano
On 09/22/2014 06:15 PM, Nathan Lynch wrote: [ ... ] MAINTAINERS does not have a specific entry for drivers/clocksource/arm_arch_timer.c, so I am working under the assumption that the series would go through Daniel or Thomas. Daniel and/or Thomas, can you take this series please? Yes, I will

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-22 Thread Nathan Lynch
On 09/22/2014 10:39 AM, Will Deacon wrote: > On Thu, Sep 18, 2014 at 03:59:32PM +0100, Nathan Lynch wrote: >> This series contains the necessary changes to allow architected timer >> access from user-space on 32-bit ARM. This allows the VDSO to support >> high resolution timestamps for clock_getti

Re: [PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-22 Thread Will Deacon
On Thu, Sep 18, 2014 at 03:59:32PM +0100, Nathan Lynch wrote: > This series contains the necessary changes to allow architected timer > access from user-space on 32-bit ARM. This allows the VDSO to support > high resolution timestamps for clock_gettime and gettimeofday. This > also merges substan

[PATCH v2 0/3] arm_arch_timer: VDSO preparation, code consolidation

2014-09-18 Thread Nathan Lynch
This series contains the necessary changes to allow architected timer access from user-space on 32-bit ARM. This allows the VDSO to support high resolution timestamps for clock_gettime and gettimeofday. This also merges substantially similar code from arm and arm64 into the core arm_arch_timer dr