git: netisr barrier: Avoid lockless wakeup/tsleep race
commit ca3321f80921e6398c9aa5a4c00811086e981d76
Author: Sepherosa Ziehau <sephe@dragonflybsd.org>
Date: Mon Jan 31 11:09:35 2011 +0800
netisr barrier: Avoid lockless wakeup/tsleep race
Add a waiting state (NETISR_BR_WAITDONE), before it is set wakeup()
will not be called. And use atomic_cmpset_int() to do the state
transition.
With-help-from: dillon@
Summary of changes:
sys/net/netisr.c | 28 ++++++++++++++++++++--------
1 files changed, 20 insertions(+), 8 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/ca3321f80921e6398c9aa5a4c00811086e981d76
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