tree cc63afd5da0556921eeb946244eefcf7a6b88295
parent f7c2136c5a0009bfddd1a462eebc2a2c29bddf8f
author Barret Rhoden <brho@cs.berkeley.edu> 1567023834 -0400
committer Barret Rhoden <brho@cs.berkeley.edu> 1570569070 -0400

Add Linux's circ_buf.h

From 5.2.

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>