Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Matt Redfearn
Hi Robert, On 04/05/18 13:27, Robert Richter wrote: On 04.05.18 12:03:12, Matt Redfearn wrote: As said, oprofile version 0.9.x is still available for cpus that do not support perf. What is the breakage? The breakage I originally set out to fix was the MT support in perf.

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Matt Redfearn
Hi Robert, On 04/05/18 13:27, Robert Richter wrote: On 04.05.18 12:03:12, Matt Redfearn wrote: As said, oprofile version 0.9.x is still available for cpus that do not support perf. What is the breakage? The breakage I originally set out to fix was the MT support in perf.

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Ralf Baechle
On Fri, May 04, 2018 at 02:27:51PM +0200, Robert Richter wrote: > On 04.05.18 12:03:12, Matt Redfearn wrote: > > >As said, oprofile version 0.9.x is still available for cpus that do > > >not support perf. What is the breakage? > > > > The breakage I originally set out to fix was the MT support

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Ralf Baechle
On Fri, May 04, 2018 at 02:27:51PM +0200, Robert Richter wrote: > On 04.05.18 12:03:12, Matt Redfearn wrote: > > >As said, oprofile version 0.9.x is still available for cpus that do > > >not support perf. What is the breakage? > > > > The breakage I originally set out to fix was the MT support

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Robert Richter
On 04.05.18 12:03:12, Matt Redfearn wrote: > >As said, oprofile version 0.9.x is still available for cpus that do > >not support perf. What is the breakage? > > The breakage I originally set out to fix was the MT support in perf. >

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Robert Richter
On 04.05.18 12:03:12, Matt Redfearn wrote: > >As said, oprofile version 0.9.x is still available for cpus that do > >not support perf. What is the breakage? > > The breakage I originally set out to fix was the MT support in perf. >

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Matt Redfearn
Hi Robert, On 04/05/18 11:26, Robert Richter wrote: On 04.05.18 10:54:32, Matt Redfearn wrote: perf is available for MIPS and supports many more CPU types than oprofile. oprofile userspace seemingly has been broken since 1.0.0 - removing oprofile support from the MIPS kernel would not break it

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Matt Redfearn
Hi Robert, On 04/05/18 11:26, Robert Richter wrote: On 04.05.18 10:54:32, Matt Redfearn wrote: perf is available for MIPS and supports many more CPU types than oprofile. oprofile userspace seemingly has been broken since 1.0.0 - removing oprofile support from the MIPS kernel would not break it

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Robert Richter
On 04.05.18 10:54:32, Matt Redfearn wrote: > perf is available for MIPS and supports many more CPU types than oprofile. > oprofile userspace seemingly has been broken since 1.0.0 - removing oprofile > support from the MIPS kernel would not break it more thatn it already is, What do you mean with

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Robert Richter
On 04.05.18 10:54:32, Matt Redfearn wrote: > perf is available for MIPS and supports many more CPU types than oprofile. > oprofile userspace seemingly has been broken since 1.0.0 - removing oprofile > support from the MIPS kernel would not break it more thatn it already is, What do you mean with

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Matt Redfearn
Hi Robert, On 04/05/18 10:30, Robert Richter wrote: On 24.04.18 14:15:58, Matt Redfearn wrote: On 24/04/18 14:05, James Hogan wrote: On Tue, Apr 24, 2018 at 01:55:54PM +0100, Matt Redfearn wrote: Since it appears that MIPS oprofile support is currently broken, core oprofile is not getting

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Matt Redfearn
Hi Robert, On 04/05/18 10:30, Robert Richter wrote: On 24.04.18 14:15:58, Matt Redfearn wrote: On 24/04/18 14:05, James Hogan wrote: On Tue, Apr 24, 2018 at 01:55:54PM +0100, Matt Redfearn wrote: Since it appears that MIPS oprofile support is currently broken, core oprofile is not getting

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Robert Richter
On 24.04.18 14:15:58, Matt Redfearn wrote: > On 24/04/18 14:05, James Hogan wrote: > >On Tue, Apr 24, 2018 at 01:55:54PM +0100, Matt Redfearn wrote: > >>Since it appears that MIPS oprofile support is currently broken, core > >>oprofile is not getting many updates and not as many architectures >

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-05-04 Thread Robert Richter
On 24.04.18 14:15:58, Matt Redfearn wrote: > On 24/04/18 14:05, James Hogan wrote: > >On Tue, Apr 24, 2018 at 01:55:54PM +0100, Matt Redfearn wrote: > >>Since it appears that MIPS oprofile support is currently broken, core > >>oprofile is not getting many updates and not as many architectures >

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-04-24 Thread Christoph Hellwig
On Tue, Apr 24, 2018 at 01:55:54PM +0100, Matt Redfearn wrote: > The core oprofile code in drivers/oprofile/ has not seeen significant > maintenance other than fixes to changes in other parts of the tree for > the last 5 years at least. It looks as through the perf tool has > more or less

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-04-24 Thread Christoph Hellwig
On Tue, Apr 24, 2018 at 01:55:54PM +0100, Matt Redfearn wrote: > The core oprofile code in drivers/oprofile/ has not seeen significant > maintenance other than fixes to changes in other parts of the tree for > the last 5 years at least. It looks as through the perf tool has > more or less

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-04-24 Thread Matt Redfearn
On 24/04/18 14:05, James Hogan wrote: On Tue, Apr 24, 2018 at 01:55:54PM +0100, Matt Redfearn wrote: Since it appears that MIPS oprofile support is currently broken, core oprofile is not getting many updates and not as many architectures implement support for it compared to perf, remove the

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-04-24 Thread Matt Redfearn
On 24/04/18 14:05, James Hogan wrote: On Tue, Apr 24, 2018 at 01:55:54PM +0100, Matt Redfearn wrote: Since it appears that MIPS oprofile support is currently broken, core oprofile is not getting many updates and not as many architectures implement support for it compared to perf, remove the

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-04-24 Thread James Hogan
On Tue, Apr 24, 2018 at 01:55:54PM +0100, Matt Redfearn wrote: > Since it appears that MIPS oprofile support is currently broken, core > oprofile is not getting many updates and not as many architectures > implement support for it compared to perf, remove the MIPS support. That sounds reasonable

Re: [RFC PATCH] MIPS: Oprofile: Drop support

2018-04-24 Thread James Hogan
On Tue, Apr 24, 2018 at 01:55:54PM +0100, Matt Redfearn wrote: > Since it appears that MIPS oprofile support is currently broken, core > oprofile is not getting many updates and not as many architectures > implement support for it compared to perf, remove the MIPS support. That sounds reasonable

[RFC PATCH] MIPS: Oprofile: Drop support

2018-04-24 Thread Matt Redfearn
The core oprofile code in drivers/oprofile/ has not seeen significant maintenance other than fixes to changes in other parts of the tree for the last 5 years at least. It looks as through the perf tool has more or less superceeded it's functionality. Additionally the MIPS architecture support has

[RFC PATCH] MIPS: Oprofile: Drop support

2018-04-24 Thread Matt Redfearn
The core oprofile code in drivers/oprofile/ has not seeen significant maintenance other than fixes to changes in other parts of the tree for the last 5 years at least. It looks as through the perf tool has more or less superceeded it's functionality. Additionally the MIPS architecture support has