089abdad44
process context ('reaper').
From within the exiting process context:
* deactivate pmap and free vmspace while we can still block
* introduce MD cpu_lwp_free() - this cleans all MD-specific context (such
as FPU state), and is the last potentially blocking operation;
all of cpu_wait(), and most of cpu_exit(), is now folded into cpu_lwp_free()
* process is now immediatelly marked as zombie and made available for pickup
by parent; the remaining last lwp continues the exit as fully detached
* MI (rather than MD) code bumps uvmexp.swtch, cpu_exit() is now same
for both 'process' and 'lwp' exit
uvm_lwp_exit() is modified to never block; the u-area memory is now
always just linked to the list of available u-areas. Introduce (blocking)
uvm_uarea_drain(), which is called to release the excessive u-area memory;
this is called by parent within wait4(), or by pagedaemon on memory shortage.
uvm_uarea_free() is now private function within uvm_glue.c.
MD process/lwp exit code now always calls lwp_exit2() immediatelly after
switching away from the exiting lwp.
g/c now unneeded routines and variables, including the reaper kernel thread
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| .. | ||
| Makefile | ||
| ansi.h | ||
| aout_machdep.h | ||
| asm.h | ||
| autoconf.h | ||
| bswap.h | ||
| bus.h | ||
| cacheops_machdep.h | ||
| cdefs.h | ||
| cpu.h | ||
| db_machdep.h | ||
| disklabel.h | ||
| elf_machdep.h | ||
| endian.h | ||
| endian_machdep.h | ||
| float.h | ||
| frame.h | ||
| ieee.h | ||
| ieeefp.h | ||
| int_const.h | ||
| int_fmtio.h | ||
| int_limits.h | ||
| int_mwgwtypes.h | ||
| int_types.h | ||
| intr.h | ||
| kcore.h | ||
| limits.h | ||
| loadfile_machdep.h | ||
| lock.h | ||
| math.h | ||
| mcontext.h | ||
| param.h | ||
| pcb.h | ||
| pmap.h | ||
| pmc.h | ||
| proc.h | ||
| profile.h | ||
| psl.h | ||
| pte.h | ||
| ptrace.h | ||
| reg.h | ||
| romcall.h | ||
| setjmp.h | ||
| signal.h | ||
| stdarg.h | ||
| svr4_machdep.h | ||
| trap.h | ||
| types.h | ||
| varargs.h | ||
| vmparam.h | ||
| z8530var.h | ||