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From: Sebastian Reichel <sebastian.reichel@collabora.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: linux-rockchip@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	Heiko Stuebner <heiko@sntech.de>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	Will Deacon <will@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	kernel@pengutronix.de,
	Michael Riesch <michael.riesch@wolfvision.net>,
	Robin Murphy <robin.murphy@arm.com>,
	Vincent Legoll <vincent.legoll@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	devicetree@vger.kernel.org
Subject: Re: [PATCH v5 00/25] Add perf support to the rockchip-dfi driver
Date: Wed, 14 Jun 2023 17:27:21 +0200	[thread overview]
Message-ID: <20230614152721.eep5ip726ump2kpe@mercury.elektranox.org> (raw)
In-Reply-To: <20230614134034.3p3p75a3jophi2eu@mercury.elektranox.org>

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Hi,

On Wed, Jun 14, 2023 at 03:40:34PM +0200, Sebastian Reichel wrote:
> I tested the series on RK3588 EVB1. The read/write byts looks
> sensible. Sometimes cycles reads unrealistic values, though:
> 
> 18446744070475110400      rockchip_ddr/cycles/

I have seen this going off a few times with and without memory
pressure. If it's way off, it always seems to follow the same
pattern: The upper 32 bits are 0xffffffff instead of 0x00000000
with the lower 32 bits containing sensible data.

-- Sebastian

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  parent reply	other threads:[~2023-06-14 15:27 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-24  8:31 [PATCH v5 00/25] Add perf support to the rockchip-dfi driver Sascha Hauer
2023-05-24  8:31 ` [PATCH v5 01/25] PM / devfreq: rockchip-dfi: Make pmu regmap mandatory Sascha Hauer
2023-06-13 16:21   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 02/25] PM / devfreq: rockchip-dfi: Embed desc into private data struct Sascha Hauer
2023-06-13 16:22   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 03/25] PM / devfreq: rockchip-dfi: use consistent name for " Sascha Hauer
2023-06-13 16:23   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 04/25] PM / devfreq: rockchip-dfi: Add SoC specific init function Sascha Hauer
2023-06-13 16:26   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 05/25] PM / devfreq: rockchip-dfi: dfi store raw values in counter struct Sascha Hauer
2023-06-13 16:28   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 06/25] PM / devfreq: rockchip-dfi: Use free running counter Sascha Hauer
2023-06-13 16:32   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 07/25] PM / devfreq: rockchip-dfi: introduce channel mask Sascha Hauer
2023-06-13 16:34   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 08/25] PM / devfreq: rk3399_dmc,dfi: generalize DDRTYPE defines Sascha Hauer
2023-06-13 16:39   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 09/25] PM / devfreq: rockchip-dfi: Clean up DDR type register defines Sascha Hauer
2023-06-13 16:46   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 10/25] PM / devfreq: rockchip-dfi: Add RK3568 support Sascha Hauer
2023-05-24  8:31 ` [PATCH v5 11/25] PM / devfreq: rockchip-dfi: Handle LPDDR2 correctly Sascha Hauer
2023-06-13 16:47   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 12/25] PM / devfreq: rockchip-dfi: Handle LPDDR4X Sascha Hauer
2023-06-13 16:48   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 13/25] PM / devfreq: rockchip-dfi: Pass private data struct to internal functions Sascha Hauer
2023-06-13 17:08   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 14/25] PM / devfreq: rockchip-dfi: Prepare for multiple users Sascha Hauer
2023-06-13 17:15   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 15/25] PM / devfreq: rockchip-dfi: give variable a better name Sascha Hauer
2023-06-13 17:16   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 16/25] PM / devfreq: rockchip-dfi: Add perf support Sascha Hauer
2023-06-14 13:29   ` Sebastian Reichel
2023-06-15 13:13   ` Sascha Hauer
2023-05-24  8:31 ` [PATCH v5 17/25] PM / devfreq: rockchip-dfi: make register stride SoC specific Sascha Hauer
2023-06-13 17:17   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 18/25] PM / devfreq: rockchip-dfi: account for multiple DDRMON_CTRL registers Sascha Hauer
2023-06-13 17:24   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 19/25] PM / devfreq: rockchip-dfi: add support for RK3588 Sascha Hauer
2023-06-13 16:16   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 20/25] dt-bindings: devfreq: event: convert Rockchip DFI binding to yaml Sascha Hauer
2023-06-13 23:39   ` Sebastian Reichel
2023-05-24  8:31 ` [PATCH v5 21/25] dt-bindings: devfreq: event: rockchip,dfi: Add rk3568 support Sascha Hauer
2023-05-24 19:42   ` Conor Dooley
2023-05-24  8:31 ` [PATCH v5 22/25] dt-bindings: devfreq: event: rockchip,dfi: Add rk3588 support Sascha Hauer
2023-05-24 19:37   ` Conor Dooley
2023-06-08 20:07   ` Rob Herring
2023-05-24  8:31 ` [PATCH v5 23/25] arm64: dts: rockchip: rk3399: Enable DFI Sascha Hauer
2023-05-24  8:31 ` [PATCH v5 24/25] arm64: dts: rockchip: rk356x: Add DFI Sascha Hauer
2023-05-24  8:31 ` [PATCH v5 25/25] arm64: dts: rockchip: rk3588s: " Sascha Hauer
2023-06-13 16:19   ` Sebastian Reichel
2023-06-14 13:40 ` [PATCH v5 00/25] Add perf support to the rockchip-dfi driver Sebastian Reichel
2023-06-14 14:19   ` Vincent Legoll
2023-06-14 15:27   ` Sebastian Reichel [this message]
2023-06-14 19:51     ` Vincent Legoll
2023-06-14 22:18       ` Sebastian Reichel
2023-06-15  6:56   ` Sascha Hauer
2023-06-15 13:27   ` Sascha Hauer

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