linux-kernel - Re: [PATCH v2] Documentation/arch: Add kernel feature descriptions and arch support status under Documentation/features/

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Date:	Tue, 19 May 2015 12:02:11 +1000
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Josh Triplett <josh@...htriplett.org>,
	Borislav Petkov <bp@...en8.de>,
	Jonathan Corbet <corbet@....net>,
	Peter Zijlstra <peterz@...radead.org>,
	Andy Lutomirski <luto@...capital.net>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-api@...r.kernel.org, linux-kernel@...r.kernel.org,
	x86@...nel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH v2] Documentation/arch: Add kernel feature descriptions
 and arch support status under Documentation/features/

On Mon, 2015-05-18 at 10:54 +0200, Ingo Molnar wrote:
> * Michael Ellerman <mpe@...erman.id.au> wrote:
> 
> > > > Yes it is. I have my own version I've cobbled together for 
> > > > powerpc, but this is much better.
> > > 
> > > Please double check the PowerPC support matrix for correctness (if 
> > > you haven't yet):
> > 
> > It looks good except for:
> > 
> > >        rwsem-optimized:  |  ok  |                              Optimized asm/rwsem.h #  arch provides optimized rwsem APIs
> > 
> > I don't see an rwsem.h in powerpc anywhere?
> 
> Indeed, that slipped through. I fixed it to:
> 
>     triton:~/tip> cat Documentation/features/locking/rwsem-optimized/arch-support.txt 
>     #
>     # Feature name:          rwsem-optimized
>     #         Kconfig:       Optimized asm/rwsem.h
>     #         description:   arch provides optimized rwsem APIs
>     #
>         |     powerpc: | TODO |
> 
>     triton:~/tip> cat Documentation/features/time/irq-time-acct/arch-support.txt
>     #
>     # Feature name:          irq-time-acct
>     #         Kconfig:       HAVE_IRQ_TIME_ACCOUNTING
>     #         description:   arch supports precise IRQ time accounting
>     #
>         |     powerpc: |  ..  |
> 
> i.e. it's not marked as TODO, but not as supported either which would 
> be misleading.

Great thanks.

cheers


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