Commit Graph

355 Commits

Author SHA1 Message Date
mrg dd521daa8b clean up a comment. 2000-10-03 20:50:49 +00:00
eeh 1ecf6779be Add support for variable end of user stacks needed to support COMPAT_NETBSD32:
`struct vmspace' has a new field `vm_minsaddr' which is the user TOS.

	PS_STRINGS is deprecated in favor of curproc->p_pstr which is derived
	from `vm_minsaddr'.

	Bump the kernel version number.
2000-09-28 19:05:06 +00:00
enami 9308eaef21 splstatclock is insufficient to protect run queues. Acquire scheduler
lock instead.
2000-09-23 00:43:10 +00:00
thorpej b008f5f25a Make PMAP_PAGEIDLEZERO() return a boolean value. FALSE indidcates
that the page being zero'd was not completed and that page zeroing
should be aborted.  This may be used by machine-dependent code doing
slow page access to reduce the latency of running a process that has
become runnable while in the middle of doing a slow page zero.
2000-09-21 17:46:04 +00:00
thorpej 72a24b4eae Add an align argument to uvm_map() and some callers of that
routine.  Works similarly fto pmap_prefer(), but allows callers
to specify a minimum power-of-two alignment of the region.
How we ever got along without this for so long is beyond me.
2000-09-13 15:00:15 +00:00
chs 11d2a68c1e fix uvm_coredump32() just like uvm_coredump(). 2000-09-07 05:01:43 +00:00
chs db3465f65b in uvm_coredump(), avoid dumping parts of the stack multiple times
while skipping parts of the stack that hasn't been used.
pointed out by SAITOH Masanobu <masanobu@iij.ad.jp>.
2000-08-24 06:09:25 +00:00
thorpej 9bd3060650 Remove a totally unnecessary splhigh/spl0 pair. 2000-08-21 02:29:32 +00:00
bjh21 3e6dc8178c Ensure that uvmexp.freemin is above the kernel reserved-page count.
When it wasn't (which could happen on a 4Mb machine with 32kb pages),
uvm_pagealloc_strat could refuse to allocate user memory, while the pagedaemon
didn't think it was worth freeing any more, resulting in the system seizing up.
2000-08-20 10:24:14 +00:00
thorpej 1b0163bd50 Garbage-collect a constant that nothing uses. 2000-08-16 16:32:06 +00:00
thorpej a91e7a7c6d Don't bother with a trampoline to start the pagedaemon and
reaper threads.
2000-08-12 22:41:53 +00:00
sommerfeld a7449460ec add comment warning about possible unlock/sleep race 2000-08-12 17:46:25 +00:00
sommerfeld 41c6473b10 Use ltsleep in a loop instead of simple_unlock/tsleep/goto try_again 2000-08-12 17:44:02 +00:00
thorpej 6eb78dcb4e Update a comment in uvmfault_anonget() to reflect reality, and
make uvm_fault() handle uvmfault_anonget() failure properly (i.e.
don't unlock a lock that's already unlocked).
2000-08-06 00:22:53 +00:00
thorpej 93a5993242 Do something sane with a DIAGNOSTIC condition in an non-DIAGNOSTIC
kernel.
2000-08-06 00:21:57 +00:00
thorpej 504f88949c Correct a comment about locking wrt. uvmfault_anonget(). 2000-08-05 23:40:55 +00:00
thorpej d3a2c5d0f9 MALLOC()/FREE() are not to be used for variable size allocations. 2000-08-03 00:47:02 +00:00
thorpej d85e53c7cc MALLOC() is not to be used for variable-sized allocations. 2000-08-02 20:25:11 +00:00
thorpej a09c11603b MALLOC()/FREE() are not to be used for variable-sized allocations. 2000-08-02 20:23:23 +00:00
thorpej 72fa880bf6 Fix a fairly obvious locking error in amap_cow_now() -- the amap was
left locked upon exit from the function (how did this one slip for
so long?)
2000-08-02 19:24:29 +00:00
wiz be8ff811b7 Rename VM_INHERIT_* to MAP_INHERIT_* and move them to sys/sys/mman.h as
discussed on tech-kern.
Retire sys/uvm/uvm_inherit.h, update man page for minherit(2).
2000-08-01 00:53:07 +00:00
jeffs 05dfa34e69 Add uvm_km_valloc_prefer_wait(). Used to valloc with the passed in
voff_t being passed to PMAP_PREFER(), which results in the propper
virtual alignment of the allocated space.
2000-07-24 20:10:51 +00:00
mrg 5b2b68bb7a fix a cast for sparc64. 2000-07-10 13:37:00 +00:00
thorpej 1079b4c0ac - Avoid an integer overflow when checking if we have exceeded our
rlimit in sbrk.  Slightly modified from a patch from Artur Grabowski.
- Rearrange code slightly, partially from Artur Grabowski.
- Only adjust vm_dsize if the grow or shrink actually succeeds.
2000-07-02 17:40:08 +00:00
mrg dea44a9ec4 remove include of <vm/vm.h> 2000-06-27 17:29:17 +00:00
mrg 1f4b948b2f move the contents of <vm/vm.h> into <uvm/uvm_extern.h>. <vm/vm.h> is simply
an include of <uvm/uvm_extern.h> now.
2000-06-27 16:16:43 +00:00
mrg 88adda1288 more vm header file changes:
<vm/vm_extern.h> merged into <uvm/uvm_extern.h>
	<vm/vm_page.h> merged into <uvm/uvm_page.h>
	<vm/pmap.h> has become <uvm/uvm_pmap.h>

this leaves just <vm/vm.h> in NetBSD.
2000-06-27 09:00:14 +00:00
mrg cd9f783cb9 install uvm_pmap.h 2000-06-27 08:49:44 +00:00
simonb eeff58b5fd In udv_fault(), use an off_t for curr_offset so that the offset passed
to d_mmap isn't truncated on 64 bit architectures.
2000-06-27 06:14:24 +00:00
mrg 6b5536f253 restore a dropped #ifdef _KERNEL 2000-06-26 17:18:40 +00:00
mrg acdc45ce9a install uvm_param.h. 2000-06-26 17:01:34 +00:00
mrg 7665599771 <vm/vm_map.h> gets merged into <uvm/uvm_map.h> 2000-06-26 15:32:23 +00:00
mrg 4c698e84f6 <vm/vm_param.h> -> <uvm/uvm_param.h> 2000-06-26 14:58:58 +00:00
mrg 2f159a1bac remove/move more mach vm header files:
<vm/pglist.h> -> <uvm/uvm_pglist.h>
	<vm/vm_inherit.h> -> <uvm/uvm_inherit.h>
	<vm/vm_kern.h> -> into <uvm/uvm_extern.h>
	<vm/vm_object.h> -> nothing
	<vm/vm_pager.h> -> into <uvm/uvm_pager.h>

also includes a bunch of <vm/vm_page.h> include removals (due to redudancy
with <vm/vm.h>), and a scattering of other similar headers.
2000-06-26 14:20:25 +00:00
simonb 889c658b5b Change the kernel mmap interface so that the offset to map is an
"off_t" and the return value is a "paddr_t" to allow mappings
at offsets past 2^31 bytes.  Somewhat inspired by FreeBSD, which
only changed the offset to a "vm_offset_t".

Includes updates for the i386, pc532 and sh3 mmmmap from Jason Thorpe.
2000-06-26 04:55:19 +00:00
mrg f5f84f80c5 <vm/vm_prot.h> becomes <uvm/uvm_prot.h> 2000-06-25 13:37:51 +00:00
pk d3aef3ad38 uvm_detach: eliminate degenerate loop construction. 2000-06-24 21:47:28 +00:00
pk bdee69596e Insert two missing `simple_unlock()'s' in udv_detach(). 2000-06-24 21:26:16 +00:00
simonb 58d0ed9dd2 Set p->p_addr to NULL after it gets freed. 2000-06-18 05:20:27 +00:00
chs e72214422a initialize aref.ar_pageoff even if there's no amap. 2000-06-13 04:10:47 +00:00
soda d5b3fb3ce1 fix printf format mismatch, when paddr_t becomes (long long) on arc port. 2000-06-09 04:43:19 +00:00
thorpej b0afc900f5 Change UVM_UNLOCK_AND_WAIT() to use ltsleep() (it is now atomic, as
advertised).  Garbage-collect uvm_sleep().
2000-06-08 05:52:34 +00:00
pk 36a1354bc6 Change previous to use `vm_map_min(dstmap)' instead of hard-coding
VM_MIN_KERNEL_ADDRESS.
2000-06-05 07:28:56 +00:00
pk 51ff5f7cd1 Let uvm_map_extract() set the lower bound on the kernel address range
itself, in stead of having its callers do that.
2000-06-02 12:02:43 +00:00
pk bf3a6b350b Shouldn't pass garbage to uvm_map_extract(). 2000-06-02 11:47:53 +00:00
thorpej 65184f2470 Change the comment before the vm_page_zero_enable global to indicate
what it will now be used for.
2000-05-29 19:25:56 +00:00
drochner f8a6b48d66 Don't silently truncate the voff_t offset to vaddr_t when passing it to
udv_attach. Pass the whole voff_t instead and do an explicite overflow
check before it is passed to the device's mmap handler (as "int", sadly).
2000-05-28 10:21:55 +00:00
thorpej e03e9e8086 Rather than starting init and creating kthreads by forking and then
doing a cpu_set_kpc(), just pass the entry point and argument all
the way down the fork path starting with fork1().  In order to
avoid special-casing the normal fork in every cpu_fork(), MI code
passes down child_return() and the child process pointer explicitly.

This fixes a race condition on multiprocessor systems; a CPU could
grab the newly created processes (which has been placed on a run queue)
before cpu_set_kpc() would be performed.
2000-05-28 05:48:59 +00:00
thorpej a7d0570e67 First sweep at scheduler state cleanup. Collect MI scheduler
state into global and per-CPU scheduler state:

	- Global state: sched_qs (run queues), sched_whichqs (bitmap
	  of non-empty run queues), sched_slpque (sleep queues).
	  NOTE: These may collectively move into a struct schedstate
	  at some point in the future.

	- Per-CPU state, struct schedstate_percpu: spc_runtime
	  (time process on this CPU started running), spc_flags
	  (replaces struct proc's p_schedflags), and
	  spc_curpriority (usrpri of processes on this CPU).

	- Every platform must now supply a struct cpu_info and
	  a curcpu() macro.  Simplify existing cpu_info declarations
	  where appropriate.

	- All references to per-CPU scheduler state now made through
	  curcpu().  NOTE: this will likely be adjusted in the future
	  after further changes to struct proc are made.

Tested on i386 and Alpha.  Changes are mostly mechanical, but apologies
in advance if it doesn't compile on a particular platform.
2000-05-26 21:19:19 +00:00
thorpej 8964c35eca Introduce a new process state distinct from SRUN called SONPROC
which indicates that the process is actually running on a
processor.  Test against SONPROC as appropriate rather than
combinations of SRUN and curproc.  Update all context switch code
to properly set SONPROC when the process becomes the current
process on the CPU.
2000-05-26 00:36:42 +00:00