From: Lee Jones <lee.jones@linaro.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
Will McVicker <willmcvicker@google.com>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Tomasz Figa <tomasz.figa@gmail.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Linus Walleij <linus.walleij@linaro.org>,
Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
John Stultz <john.stultz@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Saravana Kannan <saravanak@google.com>,
"Cc: Android Kernel" <kernel-team@android.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
linux-clk <linux-clk@vger.kernel.org>,
"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
linux-rtc@vger.kernel.org, Olof Johansson <olof@lixom.net>
Subject: Re: [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs
Date: Thu, 30 Sep 2021 13:34:33 +0100 [thread overview]
Message-ID: <YVWu2RoSqEzcG79I@google.com> (raw)
In-Reply-To: <8928290c-73d9-0843-25ed-2a4817ad32f7@canonical.com>
On Thu, 30 Sep 2021, Krzysztof Kozlowski wrote:
> > It sounds like a lack of testing is your main concern.
> >
> > How can I help here? What H/W do I need to be able to fully test this?
>
> The changes here need to be tested on affected platforms (ARMv7 and
> ARMv8), when built as a modules on some types of regular distros (e.g.
> Arch, Ubuntu). From each of such boot I would be happy to see number of
> new dmesg warnings/errors plus number of probe deferrals.
>
> Since the drivers could be switched to modules (and some distros might
> do it), they might be hit by surprise regressions in boot performance
> due to probe deferrals. This should be also checked on these platforms.
> Geert pointed out before that clocks in many cases are not optional -
> driver needs them and will wait defer.
>
> Assuming of course that boot succeeds. Minor differences in boot speed
> should not be a problem, I think, because distro anyway chosen
> all-module approach so it accepts the penalty.
Do you have any suggestions in terms of devboards?
--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog
WARNING: multiple messages have this Message-ID (diff)
From: Lee Jones <lee.jones@linaro.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
Will McVicker <willmcvicker@google.com>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Tomasz Figa <tomasz.figa@gmail.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Linus Walleij <linus.walleij@linaro.org>,
Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
John Stultz <john.stultz@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Saravana Kannan <saravanak@google.com>,
"Cc: Android Kernel" <kernel-team@android.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
linux-clk <linux-clk@vger.kernel.org>,
"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
linux-rtc@vger.kernel.org, Olof Johansson <olof@lixom.net>
Subject: Re: [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs
Date: Thu, 30 Sep 2021 13:34:33 +0100 [thread overview]
Message-ID: <YVWu2RoSqEzcG79I@google.com> (raw)
In-Reply-To: <8928290c-73d9-0843-25ed-2a4817ad32f7@canonical.com>
On Thu, 30 Sep 2021, Krzysztof Kozlowski wrote:
> > It sounds like a lack of testing is your main concern.
> >
> > How can I help here? What H/W do I need to be able to fully test this?
>
> The changes here need to be tested on affected platforms (ARMv7 and
> ARMv8), when built as a modules on some types of regular distros (e.g.
> Arch, Ubuntu). From each of such boot I would be happy to see number of
> new dmesg warnings/errors plus number of probe deferrals.
>
> Since the drivers could be switched to modules (and some distros might
> do it), they might be hit by surprise regressions in boot performance
> due to probe deferrals. This should be also checked on these platforms.
> Geert pointed out before that clocks in many cases are not optional -
> driver needs them and will wait defer.
>
> Assuming of course that boot succeeds. Minor differences in boot speed
> should not be a problem, I think, because distro anyway chosen
> all-module approach so it accepts the penalty.
Do you have any suggestions in terms of devboards?
--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog
_______________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-09-30 12:34 UTC|newest]
Thread overview: 166+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-28 23:56 [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-28 23:56 ` [PATCH v2 01/12] arm64: don't have ARCH_EXYNOS select EXYNOS_CHIPID Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-29 13:58 ` (subset) " Krzysztof Kozlowski
2021-09-29 13:58 ` Krzysztof Kozlowski
2021-09-29 14:00 ` Krzysztof Kozlowski
2021-09-29 14:00 ` Krzysztof Kozlowski
2021-09-28 23:56 ` [PATCH v2 02/12] timekeeping: add API for getting timekeeping_suspended Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-29 3:42 ` John Stultz
2021-09-29 3:42 ` John Stultz
2021-09-29 20:01 ` Will McVicker
2021-09-29 20:01 ` Will McVicker
2021-09-29 20:46 ` John Stultz
2021-09-29 20:46 ` John Stultz
2021-09-30 18:31 ` Will McVicker
2021-09-30 18:31 ` Will McVicker
2021-09-28 23:56 ` [PATCH v2 03/12] clk: samsung: add support for CPU clocks Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-28 23:56 ` [PATCH v2 04/12] clk: samsung: exynos5433: update apollo and atlas clock probing Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-28 23:56 ` [PATCH v2 05/12] clk: export __clk_lookup Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-10-08 4:31 ` Stephen Boyd
2021-10-08 4:31 ` Stephen Boyd
2021-09-28 23:56 ` [PATCH v2 06/12] clk: samsung: modularize exynos arm64 clk drivers Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-28 23:56 ` [PATCH v2 07/12] clk: samsung: set exynos arm64 clk driver as tristate Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-29 13:09 ` Krzysztof Kozlowski
2021-09-29 13:09 ` Krzysztof Kozlowski
2021-09-28 23:56 ` [PATCH v2 08/12] pinctrl: samsung: modularize the ARM and ARM64 pinctrls Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-29 2:01 ` Chanho Park
2021-09-29 2:01 ` Chanho Park
2021-09-28 23:56 ` [PATCH v2 09/12] pinctrl: samsung: set PINCTRL_EXYNOS and PINCTRL_SAMSUNG as tristate Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-28 23:56 ` [PATCH v2 10/12] soc: samsung: pmu: modularize the Exynos ARMv8 PMU driver Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-29 13:11 ` Krzysztof Kozlowski
2021-09-29 13:11 ` Krzysztof Kozlowski
2021-09-28 23:56 ` [PATCH v2 11/12] soc: samsung: pm_domains: modularize EXYNOS_PM_DOMAINS Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-29 13:36 ` Krzysztof Kozlowski
2021-09-29 13:36 ` Krzysztof Kozlowski
2021-09-28 23:56 ` [PATCH v2 12/12] ARM: rtc: remove HAVE_S3C_RTC in favor of direct dependencies Will McVicker
2021-09-28 23:56 ` Will McVicker
2021-09-29 11:52 ` Alexandre Belloni
2021-09-29 11:52 ` Alexandre Belloni
2021-09-29 13:02 ` [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs Krzysztof Kozlowski
2021-09-29 13:02 ` Krzysztof Kozlowski
2021-09-29 19:48 ` Will McVicker
2021-09-29 19:48 ` Will McVicker
2021-09-30 6:14 ` Krzysztof Kozlowski
2021-09-30 6:14 ` Krzysztof Kozlowski
2021-09-30 9:01 ` Arnd Bergmann
2021-09-30 9:01 ` Arnd Bergmann
2021-09-30 9:30 ` Lee Jones
2021-09-30 9:30 ` Lee Jones
2021-09-30 10:33 ` Krzysztof Kozlowski
2021-09-30 10:33 ` Krzysztof Kozlowski
2021-09-30 12:34 ` Lee Jones [this message]
2021-09-30 12:34 ` Lee Jones
2021-09-30 12:38 ` Krzysztof Kozlowski
2021-09-30 12:38 ` Krzysztof Kozlowski
2021-09-30 10:05 ` Geert Uytterhoeven
2021-09-30 10:05 ` Geert Uytterhoeven
2021-09-30 9:23 ` Lee Jones
2021-09-30 9:23 ` Lee Jones
2021-09-30 10:17 ` Geert Uytterhoeven
2021-09-30 10:17 ` Geert Uytterhoeven
2021-09-30 10:56 ` Lee Jones
2021-09-30 10:56 ` Lee Jones
2021-09-30 11:25 ` Geert Uytterhoeven
2021-09-30 11:25 ` Geert Uytterhoeven
2021-09-30 12:08 ` Lee Jones
2021-09-30 12:08 ` Lee Jones
2021-09-30 16:09 ` Geert Uytterhoeven
2021-09-30 16:09 ` Geert Uytterhoeven
2021-09-30 10:52 ` Krzysztof Kozlowski
2021-09-30 10:52 ` Krzysztof Kozlowski
2021-09-30 12:32 ` Lee Jones
2021-09-30 12:32 ` Lee Jones
2021-09-30 11:01 ` Tomasz Figa
2021-09-30 11:01 ` Tomasz Figa
2021-09-30 11:27 ` Geert Uytterhoeven
2021-09-30 11:27 ` Geert Uytterhoeven
2021-09-30 11:51 ` Lee Jones
2021-09-30 11:51 ` Lee Jones
2021-09-30 12:10 ` Tomasz Figa
2021-09-30 12:10 ` Tomasz Figa
2021-09-30 12:15 ` Krzysztof Kozlowski
2021-09-30 12:15 ` Krzysztof Kozlowski
2021-09-30 12:45 ` Lee Jones
2021-09-30 12:45 ` Lee Jones
2021-10-01 4:01 ` Christoph Hellwig
2021-10-01 4:01 ` Christoph Hellwig
2021-10-01 4:52 ` Saravana Kannan
2021-10-01 4:52 ` Saravana Kannan
2021-10-01 4:55 ` Christoph Hellwig
2021-10-01 4:55 ` Christoph Hellwig
2021-09-30 12:21 ` Krzysztof Kozlowski
2021-09-30 12:21 ` Krzysztof Kozlowski
2021-09-30 12:39 ` Lee Jones
2021-09-30 12:39 ` Lee Jones
2021-09-30 13:08 ` Krzysztof Kozlowski
2021-09-30 13:08 ` Krzysztof Kozlowski
2021-09-30 13:29 ` Lee Jones
2021-09-30 13:29 ` Lee Jones
2021-09-30 16:12 ` Geert Uytterhoeven
2021-09-30 16:12 ` Geert Uytterhoeven
2021-09-30 16:21 ` Lee Jones
2021-09-30 16:21 ` Lee Jones
2021-09-30 16:26 ` Geert Uytterhoeven
2021-09-30 16:26 ` Geert Uytterhoeven
2021-09-30 18:02 ` Will McVicker
2021-09-30 18:02 ` Will McVicker
2021-10-01 4:04 ` Christoph Hellwig
2021-10-01 4:04 ` Christoph Hellwig
2021-10-01 4:52 ` Olof Johansson
2021-10-01 4:52 ` Olof Johansson
2021-10-01 5:23 ` Saravana Kannan
2021-10-01 5:23 ` Saravana Kannan
2021-10-01 5:35 ` Olof Johansson
2021-10-01 5:35 ` Olof Johansson
2021-10-01 5:59 ` Will McVicker
2021-10-01 5:59 ` Will McVicker
2021-10-01 8:01 ` Krzysztof Kozlowski
2021-10-01 8:01 ` Krzysztof Kozlowski
2021-10-01 6:02 ` Saravana Kannan
2021-10-01 6:02 ` Saravana Kannan
2021-10-01 6:27 ` Olof Johansson
2021-10-01 6:27 ` Olof Johansson
2021-10-01 6:30 ` Olof Johansson
2021-10-01 6:30 ` Olof Johansson
2021-10-01 12:00 ` Arnd Bergmann
2021-10-01 12:00 ` Arnd Bergmann
2021-10-01 12:31 ` Lee Jones
2021-10-01 12:31 ` Lee Jones
2021-10-01 15:43 ` Olof Johansson
2021-10-01 15:43 ` Olof Johansson
2021-10-01 11:38 ` Linus Walleij
2021-10-01 11:38 ` Linus Walleij
2021-10-01 11:59 ` Geert Uytterhoeven
2021-10-01 11:59 ` Geert Uytterhoeven
2021-10-01 15:59 ` Olof Johansson
2021-10-01 15:59 ` Olof Johansson
2021-10-01 16:51 ` Will McVicker
2021-10-01 16:51 ` Will McVicker
2021-10-01 17:15 ` Olof Johansson
2021-10-01 17:15 ` Olof Johansson
2021-10-01 17:48 ` Will McVicker
2021-10-01 17:48 ` Will McVicker
2021-10-01 8:19 ` Geert Uytterhoeven
2021-10-01 8:19 ` Geert Uytterhoeven
2021-10-01 9:00 ` Arnd Bergmann
2021-10-01 9:00 ` Arnd Bergmann
2021-10-01 15:27 ` Olof Johansson
2021-10-01 15:27 ` Olof Johansson
2021-10-01 19:26 ` Saravana Kannan
2021-10-01 19:26 ` Saravana Kannan
2021-10-02 1:47 ` Tomasz Figa
2021-10-02 1:47 ` Tomasz Figa
2021-10-02 21:03 ` Olof Johansson
2021-10-02 21:03 ` Olof Johansson
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