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258 Commits

Author SHA1 Message Date
chuck 9eb2927bec free correct page in incomplete section of MNN, as pointed 
out by Soren S. Jorvang.
 1998-03-31 03:04:59 +00:00
chuck fe4846acdc have ddb show map print resident page count 1998-03-30 17:34:58 +00:00
mycroft 0652b9af01 Mark scheduler() and uvm_scheduler() as never returning. 1998-03-30 06:24:42 +00:00
kleink 6618749e5a Per XPG, if the file descriptor argument to mmap() refers to a file whose 
type is not supported (neither VREG nor VCHR, or not a vnode at all), fail
with ENODEV instead of EINVAL.
 1998-03-28 16:58:04 +00:00
thorpej b65c510879 Split uvmspace_alloc() into uvmspace_alloc() and uvmspace_init(). The latter 
can be used for initializing a pre-allocated vmspace.
 1998-03-27 01:47:06 +00:00
chuck db81cc9c76 update per-process rusage fault counters (ru_majflt/ru_minflt) under UVM 1998-03-26 21:50:14 +00:00
chuck e6da5a01e4 remove tmpwire arg from uvm_pagewire() -- it isn't needed anymore. 
noted by chuck s.
 1998-03-22 21:29:30 +00:00
chuck 617118bccc fix released pg bugs detected by Chuck S.: 
- release the correct page (ppsp[lcv], not pg)
 - don't access the page's fields after we have released it
 - in the uvm_objct case: move on to the next page if we've released
[should have been merged in on 1998/02/12, but we somehow missed it]
 1998-03-22 16:10:29 +00:00
chuck dd370f11a3 rework the copy inheritance case of fork. the old way did not handle 
the very rare case of shared mappings that have amap's attached in a
reasonable way -- this is not currently causing any problems, but i
fixed it anyway.  update the comment in this section of code and also
be smarter about avoiding needless calls to pmap_protect().
 1998-03-19 19:26:50 +00:00
thorpej dbc7bbee68 Make the previous change `atomic'. 1998-03-19 06:37:26 +00:00
thorpej daade671ae When unsharing or execing, deactivate the old vmspace before reassigning 
and activating the new one.  Pointed out by Chris Demetriou.
 1998-03-19 04:19:21 +00:00
mrg be92b169f8 oops, missed a bit of KNF here. 1998-03-17 07:50:08 +00:00
chuck 927ec8b012 bug fix: when doing uvm_vnp_sync() actually skip over blocked uvn's so 
that we don't try and sync them later.   should get rid of the
"uvm_vnp_sync: dying vnode on sync list" related warnings that were
occuring during a "make install."
 1998-03-11 01:37:40 +00:00
chuck 21624aaf72 uvm_dump now dumps some important pointers for debugging 1998-03-10 14:36:55 +00:00
mrg 8106d13596 KNF. 1998-03-09 00:58:55 +00:00
mycroft 24e6e6a0e7 Convert MAP_PRIVATE device mappings to MAP_SHARED on *all* platforms, not just 
the SPARC.
Remove the #ifdef COMPAT_13 for automatically adding a sharing type, since the
interface is *supposed* to support this.
Also modify the DIAGNOSTIC messages here a bit.
 1998-03-03 14:34:10 +00:00
fvdl e5bc90f40c Merge with Lite2 + local changes 1998-03-01 02:20:01 +00:00
chuck cbd05b1537 be consistent about offsets in kernel objects. vm_map_min(kernel_map) 
should always be the base [fixes problem on m68k detected by jason thorpe]

add comments to uvm_km.c explaining kernel memory management in more detail
 1998-02-24 15:58:09 +00:00
thorpej 1e3e1bfe09 Include the NFS option header. 1998-02-19 00:55:04 +00:00
drochner 93a065690b fix map range boundary check 1998-02-18 14:50:32 +00:00
mrg 3ed2e6ac6c bug fix from chuck: uvm_vnp_terminate panic when /sbin/init was unlinked 1998-02-18 06:35:46 +00:00
thorpej 550678e57f Oops, fix a typo. 1998-02-13 05:34:30 +00:00
thorpej e6c31d3db7 KNF. 1998-02-13 05:33:55 +00:00
thorpej 872181c2f2 A few changes to make it possible to read UVM histories from userland: 
- Protect option headers from inclusion if ! _KERNEL or if _LKM.
- Make sure struct uvm_history is always the same size (not dependent
  on NCPU).
- Add fmtlen and fnlen members to struct uvm_history_ent, which specify
  the lengths fo the fmt and fn strings.
- Add name, namelen, and a list entry to struct uvm_history.
- When a history is initialized, place it on the global list of all histories.
 1998-02-13 04:55:14 +00:00
thorpej cb5f8ef1df Add a global list of all UVM histories. 1998-02-13 04:52:00 +00:00
thorpej 90aee42d35 Provide a patchable knob (uvmhist_print_enabled) so that UVM history 
buffer printing can be switched on and off at run-time.  Only exists
if the kernel is build with UVMHIST_PRINT, and defaults to `on'.
 1998-02-12 20:10:15 +00:00
chs 7f45dbdfae add copyright. 1998-02-12 07:36:43 +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
perry 021fdb646a add/cleanup multiple inclusion protection. 1998-02-10 02:34:17 +00:00
mrg e92c7d991e KNF. 1998-02-09 14:35:48 +00:00
mrg 7d3aef40b3 keep statistics on pageout/pagein, total pages, and total operations. 1998-02-09 13:08:22 +00:00
mrg 3112d4b3e1 KNF. 1998-02-09 04:05:36 +00:00
mrg 7ff12d37cc fill out vmtotals: t_free, t_vm, t_avm, t_rm and t_arm. leaves shared of same, and t_pw. 1998-02-08 22:23:33 +00:00
thorpej 39f8b8c99b Round allocations to page size in uvm_pageboot_alloc(). 1998-02-08 18:27:30 +00:00
mrg 6122fae970 KNF 1998-02-08 16:07:57 +00:00
mrg bc3395e590 turn of UVM history logging by default. 1998-02-08 14:19:21 +00:00
mrg d9b2f81e27 move pdhist initialisation to the same place as maphist. also, declare 
the history buffers are "struct uvm_history_ent" to ensure proper
alignment (eg, alpha).  this fixes a boottime panic when the pdhist was
used before it had been initialised.
 1998-02-08 07:52:28 +00:00
thorpej 1305ecbe62 Allow callers of uvm_km_suballoc() to specify where the base of the 
submap _must_ begin, by adding a "fixed" boolean argument.
 1998-02-08 06:15:53 +00:00
mrg 0a058cb62f implement counters for pages paged in/out 1998-02-07 17:00:36 +00:00
mrg 4ef57d4d22 KNF. 1998-02-07 12:45:53 +00:00
mrg 5e55ce6648 bzero the entire vmspace, like the old vm does. makes ps report sane values of VSZ for swapper/pagedaemon 1998-02-07 12:31:32 +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
chs c2f8ffc062 reserve some pages for the kernel, and some more especially 
for the pagedaemon allocating from kmem_object.  this should
prevent from the pagedaemon running out of memory and deadlocking.
fix counting of wired pages.
add some debugging code to detect attempts to reference free vm_pages.
 1998-02-07 02:34:08 +00:00
chs 249efd73a1 enable hashtables for swapslot storage - deadlock is fixed. 
fix initialization of swhash entries.
use malloc(M_NOWAIT) for creating kernel object.
avoid dereferencing a vm_page once the page has been freed.
 1998-02-07 02:32:37 +00:00
chs 39c12db74f declare aobj_pager, needed in uvm_km.c. 1998-02-07 02:31:06 +00:00
chs c82ac447df convert kernel_object to an aobj. 
in uvm_km_pgremove(), free swapslots if the object is an aobj.
in uvm_km_kmemalloc(), mark pages as wired and count them.
 1998-02-07 02:29:21 +00:00
chs 6376c02019 enable paging of kernel_object. 1998-02-07 02:26:46 +00:00
chs 732a925b1b add locking of kernel_map in uvm_kernacc(). 
check return value of uvm_fault_wire() in uvm_fork().
enable swappings.
 1998-02-07 02:26:04 +00:00
chs 29ec5fd8d5 prototype for uvm_map_checkprot() moved here. 
add uvmexp fields for pagouts-in-progress and kernel-reserved pages.
 1998-02-07 02:24:02 +00:00
chs 273ac223ec prototype for uvm_map_checkprot() moved to uvm_extern.h. 1998-02-07 02:22:24 +00:00
chs 21e2cac359 fix typoes in locking. 
use M_UVMAMAP instead of M_TEMP for malloc type.
 1998-02-07 02:21:29 +00:00
chs 5a7c4f2caa don't try to relock amap if there isn't one. 1998-02-07 02:19:55 +00:00
chs 7cb9f7e5b1 rearrange a bit for clarity. 1998-02-07 02:18:27 +00:00
chs 098b8c2420 fix typoes in locking. 1998-02-07 02:17:48 +00:00
chs 1f583a43b1 remove locking from UVMCNT counters. 
they don't need to be exact, and the locking causes problems
in some of places they're used.
 1998-02-07 02:16:52 +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