CVS commit: src/sys

[Bill Stouder-Studenmund <wrstuden%netbsd.org@localhost>]

Module Name:    src
Committed By:   wrstuden
Date:           Tue Oct 28 22:11:37 UTC 2008

Modified Files:
        src/sys/compat/sa: compat_sa.c
        src/sys/kern: kern_lwp.c

Log Message:
Tweak change to move SA support from userret() to lwp_userret().

1) Since we want to check for upcalls only once, take LW_SA_UPCALL
out of the while(l->l_flags & LW_USERRET) loop.

2) since the goal is to keep SA code out of userret() (and especially
all the emulations that include userret() but will never do SA),
ALWAYS set LW_SA_UPCALL when we set SAVP_FLAG_NOUPCALLS. Drop the
test for it in lwp_userret() since it will never be set bare.

3) Adapt sa_upcall_userret() to clear LW_SA_UPCALL if it's no longer
needed. If we have gained upcalls since sa_yield(), we will deliver
them next time around.

Tested by skrll at.


To generate a diff of this commit:
cvs rdiff -r1.5 -r1.6 src/sys/compat/sa/compat_sa.c
cvs rdiff -r1.125 -r1.126 src/sys/kern/kern_lwp.c

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