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From: "misono.tomohiro@fujitsu.com" <misono.tomohiro@fujitsu.com>
To: 'Arnd Bergmann' <arnd@kernel.org>
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: Tue, 12 Jan 2021 10:40:36 +0000	[thread overview]
Message-ID: <OSBPR01MB45823CBE99E05753A6308264E5AA0@OSBPR01MB4582.jpnprd01.prod.outlook.com> (raw)
In-Reply-To: <CAK8P3a22Cc4J6pr7h357p70k2eJ2dNxkHLWYC-2bMh7A1+ZhTA@mail.gmail.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.
> 

As you guess this is only for debugging purpose, so I will try debugfs.

Thanks for review,
Tomohiro
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  reply	other threads:[~2021-01-12 10:43 UTC|newest]

Thread overview: 34+ 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 ` [PATCH 01/10] soc: fujitsu: hwb: Add hardware barrier driver init/exit code Misono Tomohiro
2021-01-08 10:52 ` [PATCH 02/10] soc: fujtisu: hwb: Add open operation Misono Tomohiro
2021-01-08 10:52 ` [PATCH 03/10] soc: fujitsu: hwb: Add IOC_BB_ALLOC ioctl Misono Tomohiro
2021-01-08 13:22   ` Arnd Bergmann
2021-01-12 11:02     ` misono.tomohiro
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 ` [PATCH 05/10] soc: fujitsu: hwb: Add IOC_BW_UNASSIGN ioctl 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 ` [PATCH 07/10] soc: fujitsu: hwb: Add IOC_GET_PE_INFO ioctl Misono Tomohiro
2021-01-08 10:52 ` [PATCH 08/10] soc: fujitsu: hwb: Add release operation Misono Tomohiro
2021-01-08 13:25   ` Arnd Bergmann
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 13:27   ` Arnd Bergmann
2021-01-12 10:40     ` misono.tomohiro [this message]
2021-01-08 10:52 ` [PATCH 10/10] soc: fujitsu: hwb: Add Kconfig/Makefile to build fujitsu_hwb driver Misono Tomohiro
2021-01-08 12:54 ` [RFC PATCH 00/10] Add Fujitsu A64FX soc entry/hardware barrier driver Mark Rutland
2021-01-08 14:23   ` Arnd Bergmann
2021-01-08 15:51     ` Mark Rutland
2021-01-12 10:24     ` misono.tomohiro
2021-01-12 14:22       ` Arnd Bergmann
2021-01-15 11:10         ` misono.tomohiro
2021-01-15 12:24           ` Arnd Bergmann
2021-01-19  5:30             ` misono.tomohiro
2021-02-18  9:49             ` misono.tomohiro
2021-03-01  7:53               ` misono.tomohiro
2021-03-02 11:06               ` Arnd Bergmann
2021-03-03 11:20                 ` misono.tomohiro
2021-03-03 13:33                   ` Arnd Bergmann
2021-03-04  7:03                     ` 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

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