Module Name:	src
Committed By:	cl
Date:		Tue Sep 16 13:46:27 UTC 2003

Modified Files:
	src/sys/kern: kern_exit.c kern_sa.c syscalls.master
	src/sys/sys: lwp.h savar.h

Log Message:
fix SA/pthread pagefault failure:
- prevent BLOCKED upcalls on double page faults and during upcalls
- make libpthread handle blocked threads which hold locks
- prevent UNBLOCKED upcalls from overtaking their BLOCKED upcall
this adds a new syscall sa_unblockyield
see also http://mail-index.netbsd.org/tech-kern/2003/09/15/0020.html


To generate a diff of this commit:
cvs rdiff -r1.123 -r1.124 src/sys/kern/kern_exit.c
cvs rdiff -r1.23 -r1.24 src/sys/kern/kern_sa.c
cvs rdiff -r1.129 -r1.130 src/sys/kern/syscalls.master
cvs rdiff -r1.10 -r1.11 src/sys/sys/lwp.h
cvs rdiff -r1.5 -r1.6 src/sys/sys/savar.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.