Commit Graph

23 Commits

Author SHA1 Message Date
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 a91e7a7c6d Don't bother with a trampoline to start the pagedaemon and
reaper threads.
2000-08-12 22:41:53 +00:00
mrg dea44a9ec4 remove include of <vm/vm.h> 2000-06-27 17:29:17 +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
thorpej 8e930a51fe Const poison uvm_wait(). 1999-11-04 21:51:42 +00:00
chs f3a668ed84 eliminate the PMAP_NEW option by making it required for all ports.
ports which previously had no support for PMAP_NEW now implement
the pmap_k* interfaces as wrappers around the non-k versions.
1999-09-12 01:16:55 +00:00
thorpej 3f176180d5 Garbage collect thread_sleep()/thread_wakeup() left over from the old
Mach VM code.  Also nuke iprintf(), which was no longer used anywhere.

Add proclist locking where appropriate.
1999-07-22 22:58:38 +00:00
thorpej 6eb9ee7cd8 - Change uvm_{lock,unlock}_fpageq() to return/take the previous interrupt
level directly, instead of making the caller wrap the calls in
  splimp()/splx().
- Add a comment documenting that interrupts that cause memory allocation
  must be blocked while the free page queue is locked.

Since interrupts must be blocked while this lock is asserted, tying them
together like this helps to prevent mistakes.
1999-05-24 19:10:57 +00:00
mycroft 99b341de15 Adjust a comparison so that the pagedaemon doesn't get stuck ping-ponging with
a process trying to allocate memory.
1999-03-30 10:12:01 +00:00
chs 92045bbba9 add uvmexp.swpgonly and use it to detect out-of-swap conditions.
numerous pagedaemon improvements were needed to make this useful:
 - don't bother waking up procs waiting for memory if there's none to be had.
 - start 4 times as many pageouts as we need free pages.
   this should reduce latency in low-memory situations.
 - in inactive scanning, if we find dirty swap-backed pages when swap space
   is full of non-resident pages, reactivate some number of these to flush
   less active pages to the inactive queue so we can consider paging them out.
   this replaces the previous scheme of inactivating pages beyond the
   inactive target when we failed to free anything during inactive scanning.
 - during both active and inactive scanning, free any swap resources from
   dirty swap-backed pages if swap space is full.  this allows other pages
   be paged out into that swap space.
1999-03-26 17:33:30 +00:00
mrg a0139bc39d remove now >1 year old pre-release message. 1999-03-25 18:48:49 +00:00
chs e4c4ea06b4 remove outdated comment. 1998-11-04 07:06:05 +00:00
chs 549cd579e5 shift by PAGE_SHIFT instead of multiplying or dividing by PAGE_SIZE. 1998-10-18 23:49:59 +00:00
eeh a2dd74ed79 Merge paddr_t changes into the main branch. 1998-08-13 02:10:37 +00:00
pk 20f05a4bb5 Include pool_drain() in page scans. 1998-07-23 20:36:09 +00:00
mrg 8106d13596 KNF. 1998-03-09 00:58:55 +00:00
mrg d90485202c - add defopt's for UVM, UVMHIST and PMAP_NEW.
- remove unnecessary UVMHIST_DECL's.
1998-02-10 14:08:44 +00:00
mrg 7d3aef40b3 keep statistics on pageout/pagein, total pages, and total operations. 1998-02-09 13:08:22 +00:00
mrg 0a058cb62f implement counters for pages paged in/out 1998-02-07 17:00:36 +00:00
mrg 1f6b921cf7 restore rcsids 1998-02-07 11:07:38 +00:00
chs 9b371040ea keep track of how many pages are currently being paged out,
stop initiating new pageouts when "(free + paging) > freetarg".
fix pageq locking.
1998-02-07 02:35:11 +00:00
thorpej 9eb328b495 RCS ID police. 1998-02-06 22:26:13 +00:00
mrg f2caacc717 initial import of the new virtual memory system, UVM, into -current.
UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some
minor portions derived from the old Mach code.  i provided some help
getting swap and paging working, and other bug fixes/ideas.  chuck
silvers <chuq@chuq.com> also provided some other fixes.

this is the UVM kernel code portion.


this will be KNF'd shortly.  :-)
1998-02-05 06:25:08 +00:00