Commit Graph

3 Commits

Author SHA1 Message Date
Tom Cherry dcb3d15611 ueventd: allow using external firmware handlers
Userspace may want to load a different firmware than the one that the
kernel requests in some cases, therefore this change adds the ability
to ueventd to run an external handler that will determine the name of
the file that should actually be loaded.

Bug: 138352500
Test: unit tests
Change-Id: Ic5da37268fd78109f83ae52d1b903bf7322a5ee5
2019-09-12 12:57:22 -07:00
Tom Cherry 4233ec7f66 ueventd: make parallel restorecon functionality optional
5aa6197d5f added the ability to
parallelize restorecon to speed up boot for devices that have not
completely moved to genfscon.  This parallel restorecon happens after
the parallel ueventd handling.

This causes a performance regression for devices that have moved to
genfscon, since previously, the restorecon() was done in the main
ueventd thread in parallel with the uevent handlers.

I also tried to run the fully parallelized restorecon in parallel with
the uevent handlers, but that did not make any change to the cold boot
time, likely due to the additional overhead of parallelizing the work.

Bug: 140458170
Test: blueline coldboot time returns to pre-regression time.
Change-Id: I3cd6a869cc9b62792466813d94ad6c69834e854e
2019-09-09 09:02:48 -07:00
Tom Cherry aefb141c67 Actually add README contents for ueventd
A long time coming

Test: n/a
Change-Id: I6050e74d7497d5a7760f615fe2ad7d5c78a66ab9
2019-08-12 13:13:57 -07:00