K 10
svn:author
V 4
jkim
K 8
svn:date
V 27
2011-03-02T19:09:49.749351Z
K 7
svn:log
V 703
MFC:	r216634, r216673

Improve PCB flags handling and make it more robust.  Add two new functions
for manipulating pcb_flags.  These inline functions are very similar to
atomic_set_int(9) and atomic_clear_int(9) but without unnecessary LOCK
prefix for SMP.  Add comments about the rationale.  Use these functions
wherever possible.  Although there are some places where it is not strictly
necessary (e.g., a PCB is copied to create a new PCB), it is done across
the board for sake of consistency.  Turn pcb_full_iret into a PCB flag as
it is safe now.  Move rarely used fields before pcb_flags and reduce size
of pcb_flags to four bytes.  Fix some style(9) nits in pcb.h while I am in
the neighborhood.

END