CVS commit: src/sys/kern

[Frank van der Linden <fvdl%netbsd.org@localhost>]

Module Name:    src
Committed By:   fvdl
Date:           Mon Aug 11 21:18:21 UTC 2003

Modified Files:
        src/sys/kern: kern_sa.c kern_sig.c

Log Message:
SA fixes from Stephan Uphoff. Quoting him:

The patch below (hopefully) improves some signaling problems
found by Nathan.

It also contains some cleanup of the sa_upcall_userret() function
removing any sleep calls using PCATCH.

Unblocked threads now only use an upcall stack after they
acquire the virtual CPU.
This prevents unblocked threads from stealing all available
upcall stacks.

Tested by Nick Hudson.


To generate a diff of this commit:
cvs rdiff -r1.19 -r1.20 src/sys/kern/kern_sa.c
cvs rdiff -r1.146 -r1.147 src/sys/kern/kern_sig.c

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