Threading cleanup.. part 2 of several.

Make part of John Birrell's KSE patch permanent..
Specifically, remove:
Any reference of the ksegrp structure. This feature was
never fully utilised and made things overly complicated.
All code in the scheduler that tried to make threaded programs
fair to unthreaded programs.  Libpthread processes will already
do this to some extent and libthr processes already disable it.

Also:
Since this makes such a big change to the scheduler(s), take the opportunity
to rename some structures and elements that had to be moved anyhow.
This makes the code a lot more readable.

The ULE scheduler compiles again but I have no idea if it works.

The 4bsd scheduler still reqires a little cleaning and some functions that now do
ALMOST nothing will go away, but I thought I'd do that as a separate commit.

Tested by David Xu, and Dan Eischen using libthr and libpthread.

1 files changed, 0 insertions, 6 deletions

diff --git a/sys/kern/kern_umtx.c b/sys/kern/kern_umtx.c
index 328fb576626c..645f02df8643 100644
--- a/sys/kern/kern_umtx.c
+++ b/sys/kern/kern_umtx.c
@@ -167,15 +167,9 @@ struct umtxq_chain {
  * if it is using 100%CPU, this is unfair to other processes.
  */
 
-#ifdef KSE
-#define UPRI(td)	(((td)->td_ksegrp->kg_user_pri >= PRI_MIN_TIMESHARE &&\
-			  (td)->td_ksegrp->kg_user_pri <= PRI_MAX_TIMESHARE) ?\
-			 PRI_MAX_TIMESHARE : (td)->td_ksegrp->kg_user_pri)
-#else
 #define UPRI(td)	(((td)->td_user_pri >= PRI_MIN_TIMESHARE &&\
 			  (td)->td_user_pri <= PRI_MAX_TIMESHARE) ?\
 			 PRI_MAX_TIMESHARE : (td)->td_user_pri)
-#endif
 
 #define	GOLDEN_RATIO_PRIME	2654404609U
 #define	UMTX_CHAINS		128