From: Pavel Machek <pavel@ucw.cz>
To: Ian Pilcher <arequipeno@gmail.com>
Cc: axboe@kernel.dk, linux-leds@vger.kernel.org,
linux-block@vger.kernel.org, gregkh@linuxfoundation.org,
kabel@kernel.org
Subject: Re: [PATCH 01/18] docs: Add block device (blkdev) LED trigger documentation
Date: Sun, 5 Sep 2021 20:42:50 +0200 [thread overview]
Message-ID: <20210905184250.GA9022@amd> (raw)
In-Reply-To: <63839834-d383-d224-8bbd-d37c6803a68f@gmail.com>
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Hi!
> >>+What: /sys/class/leds/<led>/add_blkdev
> >>+Date: September 2021
> >>+Contact: Ian Pilcher <arequipeno@gmail.com>
> >>+Description:
> >>+ Associate a block device with this LED by writing its kernel
> >>+ name (as shown in /sys/block) to this attribute. Multiple
> >>+ device names may be written at once, separated by whitespace.
> >
> >This is seriously strange interface.
>
> It's the netdev-like interface that Marek described in an earlier note
> (adapted for the fact that the trigger supports many-to-many
> relationships).
>
> >If you have directory with symlinks, why not use symlink() syscall
> >instead of add_blkdev, and unlink() syscall instead of delete_blkdev?
>
> I'd actually had that thought as well, but I didn't see any obvious way
> to do that in sysfs when I looked. If you know how to do it or know of
> an example, please let me know.
We got Greg in the Cc list, he'd be right person to talk to...
> If using symlink()/unlink() isn't an option, do you have a suggestion
> for a less seriously strange interface?
Let us explore this possibility, first.
Best regards,
Pavel
--
http://www.livejournal.com/~pavelmachek
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next prev parent reply other threads:[~2021-09-05 18:42 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-03 20:45 [PATCH 00/18] Introduce block device LED trigger Ian Pilcher
2021-09-03 20:45 ` [PATCH 01/18] docs: Add block device (blkdev) LED trigger documentation Ian Pilcher
2021-09-04 6:29 ` Pavel Machek
2021-09-05 14:49 ` Ian Pilcher
2021-09-05 18:42 ` Pavel Machek [this message]
2021-09-05 23:13 ` Ian Pilcher
2021-09-03 20:45 ` [PATCH 02/18] ledtrig-blkdev: Add build infra for block device LED trigger Ian Pilcher
2021-09-03 20:45 ` [PATCH 03/18] ledtrig-blkdev: Add function placeholders needed by block changes Ian Pilcher
2021-09-04 16:57 ` kernel test robot
2021-09-03 20:45 ` [PATCH 04/18] block: Add block device LED trigger integrations Ian Pilcher
2021-09-03 20:45 ` [PATCH 05/18] ledtrig-blkdev: Implement functions called from block subsystem Ian Pilcher
2021-09-03 20:45 ` [PATCH 06/18] ledtrig-blkdev: Add function to get gendisk by name Ian Pilcher
2021-09-03 20:45 ` [PATCH 07/18] ledtrig-blkdev: Add constants, data types, and global variables Ian Pilcher
2021-09-03 20:45 ` [PATCH 08/18] ledtrig-blkdev: Add miscellaneous helper functions Ian Pilcher
2021-09-04 6:00 ` Greg KH
2021-09-04 22:43 ` Ian Pilcher
2021-09-03 20:45 ` [PATCH 09/18] ledtrig-blkdev: Periodically check devices for activity & blink LEDs Ian Pilcher
2021-09-04 6:01 ` Greg KH
2021-09-05 14:39 ` Ian Pilcher
2021-09-05 14:51 ` Greg KH
2021-09-05 14:56 ` Ian Pilcher
2021-09-05 15:12 ` Greg KH
2021-09-05 16:55 ` Eric Biggers
2021-09-03 20:45 ` [PATCH 10/18] ledtrig-blkdev: Add function to associate the trigger with an LED Ian Pilcher
2021-09-03 20:45 ` [PATCH 11/18] ledtrig-blkdev: Add function to associate a device " Ian Pilcher
2021-09-03 20:45 ` [PATCH 12/18] ledtrig-blkdev: Add function to remove LED/device association Ian Pilcher
2021-09-03 20:45 ` [PATCH 13/18] ledtrig-blkdev: Add function to disassociate a device from all LEDs Ian Pilcher
2021-09-03 20:45 ` [PATCH 14/18] ledtrig-blkdev: Add function to disassociate an LED from the trigger Ian Pilcher
2021-09-03 20:45 ` [PATCH 15/18] ledtrig-blkdev: Add sysfs attributes to [un]link LEDs & devices Ian Pilcher
2021-09-04 5:57 ` Greg KH
2021-09-04 21:28 ` Ian Pilcher
2021-09-04 5:59 ` Greg KH
2021-09-04 22:35 ` Ian Pilcher
2021-09-05 14:51 ` Greg KH
2021-09-05 15:33 ` Ian Pilcher
2021-09-05 16:43 ` Greg KH
2021-09-03 20:45 ` [PATCH 16/18] ledtrig-blkdev: Add blink_time & interval sysfs attributes Ian Pilcher
2021-09-03 20:45 ` [PATCH 17/18] ledtrig-blkdev: Add mode (read/write/rw) sysfs attributue Ian Pilcher
2021-09-04 5:57 ` Greg KH
2021-09-04 21:01 ` Ian Pilcher
2021-09-05 14:50 ` Greg KH
2021-09-03 20:45 ` [PATCH 18/18] ledtrig-blkdev: Add initialization & exit functions Ian Pilcher
2021-09-04 6:35 ` [PATCH 00/18] Introduce block device LED trigger Pavel Machek
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