[lkml]   [2021]   [May]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC PATCH 2/2] leds: trigger: implement block trigger

Please trim the emails you are responding to.

> >+MODULE_AUTHOR("Enzo Matsumiya <>");
> >+MODULE_DESCRIPTION("LED block trigger");
> >+
> >
> As already commented on, this for_each_blk() construct is not a good idea.
> Infact, I guess it would be better if you could invert the logic:
> Not having the block trigger enumerating all devices, but rather let the
> devices register with the block trigger.
> That would have the benefit that one could choose which block device should
> be handled by the LED trigger subsystem, _and_ you would avoid the need for
> a for_each_blk() construct.
> Thing is, I don't think that all block devices should be handled by the LED
> trigger; eg for things like 'loop' or 'ramdisk' it is very
> >questionable.

> Downside is that you would need to modify the drivers, but realistically
> there are only very few drivers which should be modified; I would go for
> nvme-pci and the sd driver for starters. Maybe floppy, but arguably that can
> omitted as one has a very good audio indicator for floppy accesses
> :-)

And we already have disk activity trigger. Maybe NVMe and SD needs to
be modified to use it?

Best regards,
[unhandled content-type:application/pgp-signature]
 \ /
  Last update: 2021-05-03 12:12    [W:0.126 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site