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From: Ingo Molnar <mingo@kernel.org>
To: Valentin Schneider <valentin.schneider@arm.com>
Cc: morten.rasmussen@arm.com, vincent.guittot@linaro.org,
	Quentin Perret <qperret@google.com>,
	peterz@infradead.org, linux-kernel@vger.kernel.org,
	Russell King <linux@armlinux.org.uk>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v5 02/17] ARM: Revert back to default scheduler topology.
Date: Thu, 13 Aug 2020 21:16:14 +0200	[thread overview]
Message-ID: <20200813191614.GB2337490@gmail.com> (raw)
In-Reply-To: <20200812125300.11889-3-valentin.schneider@arm.com>


* Valentin Schneider <valentin.schneider@arm.com> wrote:

> The ARM-specific GMC level is meant to be built using the thread sibling
> mask, but no devicetree in arch/arm/boot/dts uses the 'thread' cpu-map
> binding. With SD_SHARE_POWERDOMAIN gone, this topology level can be
> removed, at which point ARM no longer benefits from having a custom defined
> topology table.
> 
> Delete the GMC topology level by making ARM use the default scheduler
> topology table. This essentially reverts commit
> 
>   fb2aa85564f4 ("sched, ARM: Create a dedicated scheduler topology table")
> 
> Cc: Russell King <linux@armlinux.org.uk>
> Suggested-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
> Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>

Minor changelog nit, it's helpful to add this final sentence:

    No change in functionality is expected.

( If indeed no change in functionality is expected. ;-)

Thanks,

	Ingo

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  reply	other threads:[~2020-08-13 19:17 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-12 12:52 [PATCH v5 00/17] sched: Instrument sched domain flags Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 01/17] ARM, sched/topology: Remove SD_SHARE_POWERDOMAIN Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 02/17] ARM: Revert back to default scheduler topology Valentin Schneider
2020-08-13 19:16   ` Ingo Molnar [this message]
2020-08-13 22:27     ` Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 03/17] sched/topology: Split out SD_* flags declaration to its own file Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 04/17] sched/topology: Define and assign sched_domain flag metadata Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 05/17] sched/topology: Verify SD_* flags setup when sched_debug is on Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 06/17] sched/debug: Output SD flag names rather than their values Valentin Schneider
2020-08-12 16:35   ` kernel test robot
2020-08-12 18:51     ` Valentin Schneider
2020-08-13 12:02       ` Luc Van Oostenryck
2020-08-13 13:13         ` Valentin Schneider
2020-08-12 17:59   ` kernel test robot
2020-08-12 17:59   ` [PATCH] sched/debug: fix noderef.cocci warnings kernel test robot
2020-08-12 18:52     ` Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 07/17] sched/topology: Introduce SD metaflag for flags needing > 1 groups Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 08/17] sched/topology: Use prebuilt SD flag degeneration mask Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 09/17] sched/topology: Remove SD_SERIALIZE degeneration special case Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 10/17] sched/topology: Propagate SD_ASYM_CPUCAPACITY upwards Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 11/17] sched/topology: Mark SD_PREFER_SIBLING as SDF_NEEDS_GROUPS Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 12/17] sched/topology: Mark SD_BALANCE_WAKE " Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 13/17] sched/topology: Mark SD_SERIALIZE " Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 14/17] sched/topology: Mark SD_ASYM_PACKING " Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 15/17] sched/topology: Mark SD_OVERLAP " Valentin Schneider
2020-08-12 12:52 ` [PATCH v5 16/17] sched/topology: Mark SD_NUMA " Valentin Schneider
2020-08-12 12:53 ` [PATCH v5 17/17] sched/topology: Expand use of SD_DEGENERATE_GROUPS_MASK to flags not needing groups Valentin Schneider

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