pbio: Add locking and remove D_NEEDGIANT.
ClosedPublic
Actions

Authored by jhb on Apr 27 2022, 3:41 PM.

Tags

None

Referenced Files

	F166727806: D35081.id105729.diff
	Sat, Aug 15, 9:38 PM

	F166719488: D35081.id105470.diff
	Sat, Aug 15, 8:51 PM

	Unknown Object (File)
	Fri, Aug 14, 9:50 PM

	Unknown Object (File)
	Fri, Aug 14, 6:37 PM

	Unknown Object (File)
	Thu, Aug 13, 4:48 PM

	Unknown Object (File)
	Tue, Aug 11, 4:29 PM

	Unknown Object (File)
	Mon, Aug 10, 10:37 AM

	Unknown Object (File)
	Mon, Aug 10, 10:10 AM

View All Files

Subscribers

None

Details

Reviewers

imp

Commits

rG80893ea32be0: pbio: Add locking and remove D_NEEDGIANT.
rG51f481235c29: pbio: Add locking and remove D_NEEDGIANT.

Summary

Use a sx lock to permit uiomove directly into/out of the the per-port
buffers. In addition, the sx lock provides a stronger guarantee that
I think this driver wants which is to single-thread read and write
calls even while paused. Finally, replace tsleep with dummy wait
channels with calls to pause_sig to more clearly communicate the
intent.