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From: broonie@kernel.org (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/6] arm64: topology: Implement basic CPU topology support
Date: Wed, 11 Dec 2013 14:30:18 +0000	[thread overview]
Message-ID: <20131211143018.GZ11468@sirena.org.uk> (raw)
In-Reply-To: <20131211142431.GD596@darko.cambridge.arm.com>

On Wed, Dec 11, 2013 at 02:24:32PM +0000, Catalin Marinas wrote:
> On Wed, Dec 11, 2013 at 02:15:03PM +0000, Mark Brown wrote:

> > He said he hadn't had time to work on the actual implementation which is
> > why I picked this up - as far as I'm aware we only have the (already
> > merged) binding for this.

> Lorenzo (on holiday now) pushed the DT topology bindings but there are
> no patches yet for reading them. I would much prefer to only describe
> the topology via DT rather than MPIDR (because hardware people sometimes
> have strange ideas).

Right, that was my understanding too.  

For clarity the current code only uses DT information, the MPIDR values
it uses are those in the CPU nodes in the DT which are used by the SMP
code and are not read from the hardware.  We can drop that bit of code
easily enough but it seemed useful for getting the scaffolding in place
separately to the binding parsing and for general robustness, perhaps
adding a patch at the end of the series to drop the code handling MPIDR
would deal with the application issues?
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  reply	other threads:[~2013-12-11 14:30 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-11 13:13 [PATCH 1/6] arm64: Add asm/cpu.h Mark Brown
2013-12-11 13:13 ` [PATCH 2/6] arm64: dts: Add a virtio disk to the RTSM motherboard Mark Brown
2013-12-11 13:13 ` [PATCH 3/6] arm64: dts: Add a devicetree for the ARMv8 4xA53 4xA57 FVP Mark Brown
2013-12-11 13:55   ` Mark Rutland
2013-12-11 14:11     ` Mark Brown
2013-12-11 15:04       ` Mark Rutland
2013-12-11 16:00         ` Mark Brown
2013-12-11 16:08         ` Jon Medhurst (Tixy)
2013-12-11 16:41           ` Ryan Harkin
2013-12-11 17:09             ` Mark Rutland
2013-12-11 17:50               ` Mark Brown
2013-12-11 13:13 ` [PATCH 4/6] arm64: topology: Implement basic CPU topology support Mark Brown
2013-12-11 14:12   ` Will Deacon
2013-12-11 14:15     ` Mark Brown
2013-12-11 14:24       ` Catalin Marinas
2013-12-11 14:30         ` Mark Brown [this message]
2013-12-11 14:49           ` Catalin Marinas
2013-12-11 16:13             ` Mark Brown
2013-12-12  6:59         ` Hanjun Guo
2013-12-12 10:27           ` Mark Brown
2013-12-12 11:22             ` Hanjun Guo
2013-12-16 10:57   ` Lorenzo Pieralisi
2013-12-16 11:33     ` Mark Brown
2013-12-16 12:29     ` Mark Brown
2013-12-16 14:46       ` Lorenzo Pieralisi
2013-12-16 15:12         ` Mark Brown
2013-12-17 11:47           ` Catalin Marinas
2013-12-17 12:17             ` Mark Brown
2013-12-16 14:45   ` Alex Shi
2013-12-16 15:22     ` Mark Brown
2013-12-17  7:19       ` Alex Shi
2013-12-17 12:02         ` Mark Brown
2013-12-11 13:13 ` [PATCH 5/6] arm64: topology: Tell the scheduler about the relative power of cores Mark Brown
2013-12-11 14:47   ` Catalin Marinas
2013-12-11 17:31     ` Mark Brown
2013-12-11 19:27       ` Nicolas Pitre
2013-12-12 11:56         ` Morten Rasmussen
2013-12-12 12:22           ` Mark Brown
2013-12-12 13:42             ` Morten Rasmussen
2013-12-12 14:26           ` Vincent Guittot
2013-12-11 13:13 ` [PATCH 6/6] arm64: dts: Add CPU topology properties for ARMv8 4xA53 4xA57 FVP Mark Brown
2013-12-11 14:10 ` [PATCH 1/6] arm64: Add asm/cpu.h Catalin Marinas
2013-12-11 14:23   ` Mark Brown
2013-12-11 14:27     ` Catalin Marinas
2013-12-12  6:50       ` Hanjun Guo
2013-12-12 10:36         ` Mark Rutland
2013-12-12 11:20           ` Hanjun Guo

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