Commit Graph

164 Commits

Author SHA1 Message Date
Julian Elischer
060563ec50 Move the _oncpu entry from the KSE to the thread.
The entry in the KSE still exists but it's purpose will change a bit
when we add the ability to lock a KSE to a cpu.
2003-04-10 17:35:44 +00:00
Maxime Henrion
4974b53e31 Remove a trailing semicolon in SCHED_QUANTUM definition.
Luckily this didn't cause any bugs.

Spotted by:	Samy Al Bahra <samy@kerneled.com>
2003-03-24 15:16:21 +00:00
Julian Elischer
ac2e415327 Change the process flags P_KSES to be P_THREADED.
This is just a cosmetic change but I've been meaning to do it for about a year.
2003-02-27 02:05:19 +00:00
David Xu
4f6cfa4520 Update comments to reflect new KSE code. 2003-02-19 13:36:51 +00:00
Julian Elischer
4a338afd7a Move a bunch of flags from the KSE to the thread.
I was in two minds as to where to put them in the first case..
I should have listenned to the other mind.

Submitted by:	 parts by davidxu@
Reviewed by:	jeff@ mini@
2003-02-17 09:55:10 +00:00
Jeff Roberson
8fb913face - Unbreak world. I did not notice that libkvm was still used in some places
to access the pctcpu.  This will have to be sorted out more later as the
   new scheduler requires a procedural interface for this data.  A more
   complete solution will follow.
2003-01-13 03:42:41 +00:00
Jeff Roberson
bcb06d5980 - Move ke_pctcpu and ke_cpticks into the scheduler specific datastructure.
This will prevent access through mechanisms other than the published
   interfaces.
2003-01-12 19:04:49 +00:00
Julian Elischer
93a7aa79d6 Add code to ddb to allow backtracing an arbitrary thread.
(show thread {address})

Remove the IDLE kse state and replace it with a change in
the way threads sahre KSEs. Every KSE now has a thread, which is
considered its "owner" however a KSE may also be lent to other
threads in the same group to allow completion of in-kernel work.
n this case the owner remains the same and the KSE will revert to the
owner when the other work has been completed.

All creations of upcalls etc. is now done from
kse_reassign() which in turn is called from mi_switch or
thread_exit(). This means that special code can be removed from
msleep() and cv_wait().

kse_release() does not leave a KSE with no thread any more but
converts the existing thread into teh KSE's owner, and sets it up
for doing an upcall. It is just inhibitted from being scheduled until
there is some reason to do an upcall.

Remove all trace of the kse_idle queue since it is no-longer needed.
"Idle" KSEs are now on the loanable queue.
2002-12-28 01:23:07 +00:00
Jeff Roberson
79acfc497b - Add the new sched_pctcpu() function to the sched_* api.
- Provide a routine in sched_4bsd to add this functionality.
 - Use sched_pctcpu() in kern_proc, which is the one place outside of
   sched_4bsd where the old pctcpu value was accessed directly.

Approved by:	re
2002-11-21 09:30:55 +00:00
Jeff Roberson
06439a04a1 - Move scheduler specific macros and defines out of proc.h
Approved by:	re
2002-11-21 09:14:13 +00:00
Jeff Roberson
148302c9c9 - Move FSCALE back to kern_sync. This is not scheduler specific.
- Create a new callout for lbolt and move it out of schedcpu().  This is not
   scheduler specific either.

Approved by:	re
2002-11-21 08:57:08 +00:00
Jeff Roberson
de028f5a4a - Implement a mechanism for allowing schedulers to place scheduler dependant
data in the scheduler independant structures (proc, ksegrp, kse, thread).
 - Implement unused stubs for this mechanism in sched_4bsd.

Approved by:	re
Reviewed by:	luigi, trb
Tested on:	x86, alpha
2002-11-21 01:22:38 +00:00
Julian Elischer
1f955e2d48 Tidy up the scheduler's code for changing the priority of a thread.
Logically pretty much a NOP.
2002-10-14 20:34:31 +00:00
Jeff Roberson
b43179fbe8 - Create a new scheduler api that is defined in sys/sched.h
- Begin moving scheduler specific functionality into sched_4bsd.c
 - Replace direct manipulation of scheduler data with hooks provided by the
   new api.
 - Remove KSE specific state modifications and single runq assumptions from
   kern_switch.c

Reviewed by:	-arch
2002-10-12 05:32:24 +00:00