From: Ingo Molnar <mingo@kernel.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Josh Triplett <josh@joshtriplett.org>,
Borislav Petkov <bp@alien8.de>, Jonathan Corbet <corbet@lwn.net>,
Peter Zijlstra <peterz@infradead.org>,
Andy Lutomirski <luto@amacapital.net>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-api@vger.kernel.org, linux-kernel@vger.kernel.org,
x86@kernel.org, linux-arch@vger.kernel.org
Subject: Re: [PATCH v2] Documentation/arch: Add kernel feature descriptions and arch support status under Documentation/features/
Date: Mon, 18 May 2015 10:54:23 +0200 [thread overview]
Message-ID: <20150518085423.GA24944@gmail.com> (raw)
In-Reply-To: <1431913033.13218.2.camel@ellerman.id.au>
* Michael Ellerman <mpe@ellerman.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
#
-----------------------
| arch |status|
-----------------------
| alpha: | ok |
| arc: | TODO |
| arm: | TODO |
| arm64: | TODO |
| avr32: | TODO |
| blackfin: | TODO |
| c6x: | TODO |
| cris: | TODO |
| frv: | TODO |
| hexagon: | TODO |
| ia64: | ok |
| m32r: | TODO |
| m68k: | TODO |
| metag: | TODO |
| microblaze: | TODO |
| mips: | TODO |
| mn10300: | TODO |
| nios2: | TODO |
| openrisc: | TODO |
| parisc: | TODO |
| powerpc: | TODO |
| s390: | ok |
| score: | TODO |
| sh: | ok |
| sparc: | ok |
| tile: | TODO |
| um: | TODO |
| unicore32: | TODO |
| x86: | ok |
| xtensa: | ok |
-----------------------
> And this is correct but a bit confusing:
>
> > irq-time-acct: | ok | HAVE_IRQ_TIME_ACCOUNTING # arch supports precise IRQ time accounting
>
> I think you and Paul agreed it's "ok" on powerpc because we have
> VIRT_CPU_ACCOUNTING instead, but that's not obvious.
Ok, so I modified it to print '..' instead:
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
#
-----------------------
| arch |status|
-----------------------
| alpha: | .. |
| arc: | TODO |
| arm: | ok |
| arm64: | .. |
| avr32: | TODO |
| blackfin: | TODO |
| c6x: | TODO |
| cris: | TODO |
| frv: | TODO |
| hexagon: | TODO |
| ia64: | .. |
| m32r: | TODO |
| m68k: | TODO |
| metag: | TODO |
| microblaze: | TODO |
| mips: | ok |
| mn10300: | TODO |
| nios2: | TODO |
| openrisc: | TODO |
| parisc: | .. |
| powerpc: | .. |
| s390: | .. |
| score: | TODO |
| sh: | TODO |
| sparc: | .. |
| tile: | .. |
| um: | TODO |
| unicore32: | TODO |
| x86: | ok |
| xtensa: | ok |
-----------------------
i.e. it's not marked as TODO, but not as supported either which would
be misleading.
Thanks,
Ingo
next prev parent reply other threads:[~2015-05-18 8:54 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-11 19:29 [PATCHv2 1/2] clone: Support passing tls argument via C rather than pt_regs magic Josh Triplett
2015-05-12 21:22 ` Andrew Morton
2015-05-12 21:38 ` Peter Zijlstra
2015-05-12 21:49 ` Andrew Morton
2015-05-13 8:34 ` [RFC PATCH] Documentation/arch: Add Documentation/arch-TODO Ingo Molnar
2015-05-13 8:56 ` [RFC PATCH v2] " Ingo Molnar
2015-05-13 9:24 ` [RFC PATCH v3] " Ingo Molnar
2015-05-13 9:46 ` Ingo Molnar
2015-05-13 9:47 ` [RFC PATCH v5] " Ingo Molnar
2015-05-13 13:18 ` Borislav Petkov
2015-05-13 13:48 ` [RFC PATCH v6] Documentation/arch: Add Documentation/arch-features.txt Ingo Molnar
2015-05-13 16:27 ` Josh Triplett
2015-05-13 16:53 ` Josh Triplett
2015-05-14 10:16 ` Ingo Molnar
2015-05-14 10:31 ` Josh Triplett
2015-05-13 22:05 ` Andrew Morton
2015-05-14 10:02 ` Ingo Molnar
2015-05-14 10:15 ` [PATCH] Documentation/arch: Add kernel feature descriptions and arch support status under Documentation/features/ Ingo Molnar
2015-05-14 10:35 ` [PATCH v2] " Ingo Molnar
2015-05-14 19:38 ` Andrew Morton
2015-05-14 19:59 ` Ingo Molnar
2015-05-14 22:33 ` Stephen Rothwell
2015-05-15 7:38 ` Ingo Molnar
2015-05-15 7:51 ` Ingo Molnar
2015-05-15 9:37 ` Ingo Molnar
2015-05-14 20:34 ` Richard Weinberger
2015-05-14 22:57 ` Michael Ellerman
2015-05-15 7:49 ` Ingo Molnar
2015-05-18 1:37 ` Michael Ellerman
2015-05-18 8:54 ` Ingo Molnar [this message]
2015-05-19 2:02 ` Michael Ellerman
2015-05-22 15:49 ` Jonathan Corbet
2015-05-23 8:07 ` Ingo Molnar
2015-05-24 18:44 ` Jonathan Corbet
2015-06-03 11:03 ` [GIT PULL] Documentation/features: Add kernel feature descriptions and arch support status files " Ingo Molnar
2015-06-08 23:08 ` Jonathan Corbet
2015-05-14 7:08 ` [RFC PATCH v6] Documentation/arch: Add Documentation/arch-features.txt Ingo Molnar
2015-05-14 3:55 ` Paul Mackerras
2015-05-14 7:02 ` Ingo Molnar
2015-05-13 14:09 ` [RFC PATCH v5] Documentation/arch: Add Documentation/arch-TODO Michele Curti
2015-05-13 14:42 ` Geert Uytterhoeven
2015-05-14 7:21 ` H. Peter Anvin
2015-05-14 7:21 ` H. Peter Anvin
2015-05-13 0:53 ` [PATCHv2 1/2] clone: Support passing tls argument via C rather than pt_regs magic josh
2015-05-13 22:56 ` Andrew Morton
2015-05-13 23:25 ` josh
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