[PATCH v2 00/13] event: Provide support for events to connect subsystems

Tom Rini trini at konsulko.com
Tue Mar 8 14:26:21 CET 2022

On Tue, Mar 08, 2022 at 02:11:02PM +0100, Heinrich Schuchardt wrote:
> On 3/4/22 16:42, Simon Glass wrote:
> > It is a common need in U-Boot to have one subsystem notify another
> > when something happens. An example is reading a partition table when a
> > new block device is set up.
> > 
> > It is also common to add weak functions and 'hook' functions to modify
> > how U-Boot works. See for example ft_board_setup() and the like.
> > 
> > U-Boot would benefit from a generic mechanism to handle these cases,
> > with the ability to hook into various 'events' in a
> > subsystem-independent and transparent way.
> > 
> > This series provides a way to create and dispatch events, with a way of
> > registering a 'spy' which watches for events of different types. This
> > allows 'hook' functions to be created in a generic way.
> > 
> > It also includes a script to list the hooks in an image, which is a bit
> > easier to debug than weak functions, as well as an 'event' command to
> > do the same from within U-Boot.
> > 
> > These 'static' events can be used to replace hooks like misc_init_f(),
> > for example. Also included is basic support for 'dynamic' events, where
> > a spy can be registered at runtime. The need for this is still being
> > figured out.
> @Simon, Tom:
> What is the status of this series? Takahiro's UEFI integration series
> builds on it. Is it going to be pushed to origin/next soon?

I'm waiting for Simon to reply to Takahiro's comment on v2 before

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