cvs commit: src/sys/alpha/alpha machdep.c src/sys/amd64/amd64 machdep.c src/sys/arm/sa11x0 assabet_machdep.c src/sys/conf files src/sys/ddb db_ps.c src/sys/i386/i386 machdep.c src/sys/ia64/ia64 machdep.c src/sys/kern init_main.c kern_exec.c kern_exit.c ...

[Julian Elischer]

julian      2004-09-05 02:09:54 UTC

  FreeBSD src repository

  Modified files:
    sys/alpha/alpha      machdep.c 
    sys/amd64/amd64      machdep.c 
    sys/arm/sa11x0       assabet_machdep.c 
    sys/conf             files 
    sys/ddb              db_ps.c 
    sys/i386/i386        machdep.c 
    sys/ia64/ia64        machdep.c 
    sys/kern             init_main.c kern_exec.c kern_exit.c 
                         kern_fork.c kern_intr.c kern_kse.c 
                         kern_proc.c kern_switch.c kern_synch.c 
                         kern_thr.c kern_thread.c sched_4bsd.c 
                         sched_ule.c 
    sys/pc98/i386        machdep.c 
    sys/powerpc/powerpc  machdep.c 
    sys/sparc64/sparc64  machdep.c 
    sys/sys              proc.h sched.h 
    lib/libkvm           kvm_proc.c 
  Log:
  Refactor a bunch of scheduler code to give basically the same behaviour
  but with slightly cleaned up interfaces.
  
  The KSE structure has become the same as the "per thread scheduler
  private data" structure. In order to not make the diffs too great
  one is #defined as the other at this time.
  
  The KSE (or td_sched) structure is  now allocated per thread and has no
  allocation code of its own.
  
  Concurrency for a KSEGRP is now kept track of via a simple pair of counters
  rather than using KSE structures as tokens.
  
  Since the KSE structure is different in each scheduler, kern_switch.c
  is now included at the end of each scheduler. Nothing outside the
  scheduler knows the contents of the KSE (aka td_sched) structure.
  
  The fields in the ksegrp structure that are to do with the scheduler's
  queueing mechanisms are now moved to the kg_sched structure.
  (per ksegrp scheduler private data structure). In other words how the
  scheduler queues and keeps track of threads is no-one's business except
  the scheduler's. This should allow people to write experimental
  schedulers with completely different internal structuring.
  
  A scheduler call sched_set_concurrency(kg, N) has been added that
  notifies teh scheduler that no more than N threads from that ksegrp
  should be allowed to be on concurrently scheduled. This is also
  used to enforce 'fainess' at this time so that a ksegrp with
  10000 threads can not swamp a the run queue and force out a process
  with 1 thread, since the current code will not set the concurrency above
  NCPU, and both schedulers will not allow more than that many
  onto the system run queue at a time. Each scheduler should eventualy develop
  their own methods to do this now that they are effectively separated.
  
  Rejig libthr's kernel interface to follow the same code paths as
  linkse for scope system threads. This has slightly hurt libthr's performance
  but I will work to recover as much of it as I can.
  
  Thread exit code has been cleaned up greatly.
  exit and exec code now transitions a process back to
  'standard non-threaded mode' before taking the next step.
  Reviewed by:    scottl, peter
  MFC after:      1 week
  
  Revision  Changes    Path
  1.80      +8 -1      src/lib/libkvm/kvm_proc.c
  1.223     +1 -1      src/sys/alpha/alpha/machdep.c
  1.620     +1 -1      src/sys/amd64/amd64/machdep.c
  1.3       +1 -1      src/sys/arm/sa11x0/assabet_machdep.c
  1.950     +1 -2      src/sys/conf/files
  1.53      +5 -3      src/sys/ddb/db_ps.c
  1.598     +1 -1      src/sys/i386/i386/machdep.c
  1.186     +1 -1      src/sys/ia64/ia64/machdep.c
  1.248     +8 -21     src/sys/kern/init_main.c
  1.250     +2 -6      src/sys/kern/kern_exec.c
  1.246     +2 -17     src/sys/kern/kern_exit.c
  1.238     +2 -11     src/sys/kern/kern_fork.c
  1.115     +1 -0      src/sys/kern/kern_intr.c
  1.200     +57 -36    src/sys/kern/kern_kse.c
  1.216     +10 -28    src/sys/kern/kern_proc.c
  1.86      +184 -97   src/sys/kern/kern_switch.c
  1.259     +3 -3      src/sys/kern/kern_synch.c
  1.25      +56 -103   src/sys/kern/kern_thr.c
  1.196     +153 -241  src/sys/kern/kern_thread.c
  1.57      +116 -63   src/sys/kern/sched_4bsd.c
  1.125     +163 -108  src/sys/kern/sched_ule.c
  1.343     +1 -1      src/sys/pc98/i386/machdep.c
  1.76      +1 -1      src/sys/powerpc/powerpc/machdep.c
  1.113     +1 -1      src/sys/sparc64/sparc64/machdep.c
  1.399     +21 -93    src/sys/sys/proc.h
  1.16      +10 -13    src/sys/sys/sched.h