From: Arnd Bergmann <arnd@kernel.org>
To: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Cc: Linux ARM <linux-arm-kernel@lists.infradead.org>,
SoC Team <soc@kernel.org>, Will Deacon <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Arnd Bergmann <arnd@arndb.de>, Olof Johansson <olof@lixom.net>
Subject: Re: [PATCH 09/10] soc: fujitsu: hwb: Add sysfs entry
Date: Fri, 8 Jan 2021 14:27:34 +0100 [thread overview]
Message-ID: <CAK8P3a22Cc4J6pr7h357p70k2eJ2dNxkHLWYC-2bMh7A1+ZhTA@mail.gmail.com> (raw)
In-Reply-To: <20210108105241.1757799-10-misono.tomohiro@jp.fujitsu.com>
On Fri, Jan 8, 2021 at 11:52 AM Misono Tomohiro
<misono.tomohiro@jp.fujitsu.com> wrote:
>
> This adds sysfs entry per CMG to show running barrier driver status
> for debugging user application. The following entries will be created:
>
> /sys/class/misc/fujitsu_hwb
> |- hwinfo ... number of CMG/BB/BW/pe_per_cmg on running system
> |- CMG0
> |- core_map ... cpuid belonging to this CMG
> |- used_bb_bmap ... bitmap of currently allocated BB
> |- used_bw_bmap ... bitmap of currently allocated BW
> |- init_sync_bb0 ... current value of INIT_SYNC register 0
> |- init_sync_bb1 ... current value of INIT_SYNC register 1
> ...
> |- CMG1
> ...
If this is meant as a stable interface, it should be documented in
Documentation/ABI/
However, if it's purely for debugging and may not get maintained
forever, you might want to use debugfs instead.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@kernel.org>
To: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
Catalin Marinas <catalin.marinas@arm.com>,
SoC Team <soc@kernel.org>, Olof Johansson <olof@lixom.net>,
Will Deacon <will@kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 09/10] soc: fujitsu: hwb: Add sysfs entry
Date: Fri, 8 Jan 2021 14:27:34 +0100 [thread overview]
Message-ID: <CAK8P3a22Cc4J6pr7h357p70k2eJ2dNxkHLWYC-2bMh7A1+ZhTA@mail.gmail.com> (raw)
Message-ID: <20210108132734.DKDbfphePu3xWiDfNGR_VX2mVg1__tC9KZYsG2cPn2E@z> (raw)
In-Reply-To: <20210108105241.1757799-10-misono.tomohiro@jp.fujitsu.com>
On Fri, Jan 8, 2021 at 11:52 AM Misono Tomohiro
<misono.tomohiro@jp.fujitsu.com> wrote:
>
> This adds sysfs entry per CMG to show running barrier driver status
> for debugging user application. The following entries will be created:
>
> /sys/class/misc/fujitsu_hwb
> |- hwinfo ... number of CMG/BB/BW/pe_per_cmg on running system
> |- CMG0
> |- core_map ... cpuid belonging to this CMG
> |- used_bb_bmap ... bitmap of currently allocated BB
> |- used_bw_bmap ... bitmap of currently allocated BW
> |- init_sync_bb0 ... current value of INIT_SYNC register 0
> |- init_sync_bb1 ... current value of INIT_SYNC register 1
> ...
> |- CMG1
> ...
If this is meant as a stable interface, it should be documented in
Documentation/ABI/
However, if it's purely for debugging and may not get maintained
forever, you might want to use debugfs instead.
Arnd
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next prev parent reply other threads:[~2021-01-08 13:27 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-08 10:52 [RFC PATCH 00/10] Add Fujitsu A64FX soc entry/hardware barrier driver Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro
2021-01-08 10:52 ` [PATCH 01/10] soc: fujitsu: hwb: Add hardware barrier driver init/exit code Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro
2021-01-08 10:52 ` [PATCH 02/10] soc: fujtisu: hwb: Add open operation Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro
2021-01-08 10:52 ` [PATCH 03/10] soc: fujitsu: hwb: Add IOC_BB_ALLOC ioctl Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro
2021-01-08 13:22 ` Arnd Bergmann
2021-01-08 13:22 ` Arnd Bergmann
2021-01-12 11:02 ` misono.tomohiro
2021-01-12 11:02 ` misono.tomohiro
2021-01-12 12:34 ` Arnd Bergmann
2021-01-12 12:34 ` Arnd Bergmann
2021-01-08 10:52 ` [PATCH 04/10] soc: fujitsu: hwb: Add IOC_BW_ASSIGN ioctl Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro
2021-01-08 10:52 ` [PATCH 05/10] soc: fujitsu: hwb: Add IOC_BW_UNASSIGN ioctl Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro
2021-01-08 10:52 ` [PATCH 06/10] soc: fujitsu: hwb: Add IOC_BB_FREE ioctl Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro
2021-01-08 10:52 ` [PATCH 07/10] soc: fujitsu: hwb: Add IOC_GET_PE_INFO ioctl Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro
2021-01-08 10:52 ` [PATCH 08/10] soc: fujitsu: hwb: Add release operation Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro
2021-01-08 13:25 ` Arnd Bergmann
2021-01-08 13:25 ` Arnd Bergmann
2021-01-12 10:38 ` misono.tomohiro
2021-01-12 10:38 ` misono.tomohiro
2021-01-08 10:52 ` [PATCH 09/10] soc: fujitsu: hwb: Add sysfs entry Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro
2021-01-08 13:27 ` Arnd Bergmann [this message]
2021-01-08 13:27 ` Arnd Bergmann
2021-01-12 10:40 ` misono.tomohiro
2021-01-12 10:40 ` misono.tomohiro
2021-01-08 10:52 ` [PATCH 10/10] soc: fujitsu: hwb: Add Kconfig/Makefile to build fujitsu_hwb driver Misono Tomohiro
2021-01-08 10:52 ` Misono Tomohiro
2021-01-08 12:54 ` [RFC PATCH 00/10] Add Fujitsu A64FX soc entry/hardware barrier driver Mark Rutland
2021-01-08 12:54 ` Mark Rutland
2021-01-08 14:23 ` Arnd Bergmann
2021-01-08 14:23 ` Arnd Bergmann
2021-01-08 15:51 ` Mark Rutland
2021-01-08 15:51 ` Mark Rutland
2021-01-12 10:24 ` misono.tomohiro
2021-01-12 10:24 ` misono.tomohiro
2021-01-12 14:22 ` Arnd Bergmann
2021-01-12 14:22 ` Arnd Bergmann
2021-01-15 11:10 ` misono.tomohiro
2021-01-15 11:10 ` misono.tomohiro
2021-01-15 12:24 ` Arnd Bergmann
2021-01-15 12:24 ` Arnd Bergmann
2021-01-19 5:30 ` misono.tomohiro
2021-01-19 5:30 ` misono.tomohiro
2021-02-18 9:49 ` misono.tomohiro
2021-02-18 9:49 ` misono.tomohiro
2021-03-01 7:53 ` misono.tomohiro
2021-03-01 7:53 ` misono.tomohiro
2021-03-02 11:06 ` Arnd Bergmann
2021-03-02 11:06 ` Arnd Bergmann
2021-03-03 11:20 ` misono.tomohiro
2021-03-03 11:20 ` misono.tomohiro
2021-03-03 13:33 ` Arnd Bergmann
2021-03-03 13:33 ` Arnd Bergmann
2021-03-04 7:03 ` misono.tomohiro
2021-03-04 7:03 ` misono.tomohiro
2021-01-12 10:32 ` misono.tomohiro
2021-01-12 10:32 ` misono.tomohiro
-- strict thread matches above, loose matches on Subject: below --
2021-01-08 10:32 Misono Tomohiro
2021-01-08 10:32 ` [PATCH 09/10] soc: fujitsu: hwb: Add sysfs entry Misono Tomohiro
2021-01-08 10:32 ` Misono Tomohiro
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