CVSROOT: /cvs
Module name: src
Changes by: chel...@cvs.openbsd.org 2020/12/04 11:05:26
Modified files:
sys/dev/pv : if_hvn.c
Log message:
hvn(4): msleep(9) -> msleep_nsec(9)
In hvn_alloc_cmd() we may spin waiting for a free rndis_cmd. We check
the list once per tick and block with msleep(9) if there aren't any
free objects.
In practice though we don't need to poll for a free rndis_cmd because
our sleep is protected by a mutex, so we can't miss a wakeup(9). That
is, it's safe to use msleep_nsec(9) here and not set a timeout (INFSLP).
Tested by Andre Stoebe <as@nul.space> (Hyper-V on Windows 10).
"LGTM" mikeb@, ok mpi@
