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2545 Commits

Author SHA1 Message Date
dg
449e14aa40 Fixed bug where page modifications would be lost when swap space was 
almost depleted.

Reviewed by:	John Dyson
 1994-10-14 01:58:52 +00:00
dg
67535793f7 Changed I/O error messages to be somewhat less cryptic. Removed a piece 
of unused code.
 1994-10-14 00:57:19 +00:00
dg
bb709a3eec Fixed an object reference count problem that was caused by a call to 
vm_object_lookup() being outside of some parens. The bug was introduced
via some recently added code.

Reviewed by:	John Dyson
 1994-10-13 21:01:39 +00:00
dg
8ec51aef1b Got rid of map.h. It's a leftover from the rmap code, and we use rlists. 
Changed swapmap into swaplist.
 1994-10-09 07:35:18 +00:00
phk
09c3293a0f Cosmetics: unused vars, ()'s, #include's &c &c to silence gcc. 
Reviewed by:	davidg
 1994-10-09 01:52:19 +00:00
dg
877f7da834 Call resetpriority, not setpriority() ...oops. 
Submitted by:	John Dyson
 1994-10-09 00:18:22 +00:00
phk
633ef15194 Cosmetics. Unused vars and other warnings. 1994-10-07 07:23:04 +00:00
dg
52b4dc9c30 Stuff object into v_vmdata rather than pager. Not important which at 
the moment, but will be in the future. Other changes mostly cosmetic,
but are made for future VMIO considerations.

Submitted by:	John Dyson
 1994-10-05 09:48:45 +00:00
dg
66cba7eaa5 Fixed minor bug caused by some missing parens that can result in slightly 
reduced paging performance by missing a clustering opportunity. Found
by Poul-Henning Kamp with gcc -Wall.
 1994-10-05 09:02:53 +00:00
dg
2745117c81 John Dyson's work in progress. Not currently used. 1994-10-04 07:32:08 +00:00
dg
467ebd6849 Fixed bug related to proper sensing of page modification that we 
inadvertantly introduced in pre-1.1.5. This could cause page modifications
to go unnoticed during certain extreme low memory/high paging rate conditions.

Submitted by:	John Dyson and David Greenman
 1994-10-04 03:05:09 +00:00
phk
f3c1ed2327 GCC cleanup. 
Reviewed by:
Submitted by:
Obtained from:
 1994-10-02 17:48:58 +00:00
dg
4f97017177 Previous commit should have read ...in vm_page_alloc_contig(). 
...(this commit): moved initialization of 'start' to make it more clear
that it is initialized properly (also in vm_page_alloc_contig).
Reviewed by:
Submitted by:
Obtained from:
 1994-09-27 20:49:02 +00:00
dg
e513bd35af Fixed another bug, and cleaned up the code. 1994-09-27 20:45:24 +00:00
dg
9aaca324b5 Fixed multiple bugs in previous version of vm_page_alloc_contig. 1994-09-27 19:34:16 +00:00
dg
cefcba07fb 1) New "vm_page_alloc_contig" routine by me. 
2) Created a new vm_page flag "PG_FREE" to help track free pages.
3) Use PG_FREE flag to detect inconsistencies in a few places.
 1994-09-27 18:00:29 +00:00
dg
3da89b9a18 Removed unimplemented subr_rmap.c and unused references to it. 1994-09-25 22:31:11 +00:00
dg
b769fbff39 Disabled swap anti-fragmentation code. It reduces swap paging performance 
by 20% in my tests, and it appears to be the cause of a swap leak.

Submitted by:	John Dyson
 1994-09-25 04:02:10 +00:00
dg
71d8424950 Fixed a bug I introduced when fixing the rss limit code. Changed swapout 
policy to be a bit more selective about what processes get swapped out.

Reviewed by:	John Dyson
 1994-09-12 15:06:14 +00:00
dg
e789621f5f Eliminated a whole pile of ancient (we're taking 4.3BSD) VM system 
related #define constants. Corrected incorrect VM_MAX_KERNEL_ADDRESS.

Reviewed by:	John Dyson
 1994-09-12 11:38:31 +00:00
dg
4c73f2ffb4 Don't deactivate pages in 0-refcount objects. Added a couple of missing 
paging stats. Fixed problem with free_reserved becoming depleted during
certain swap_pager operations.

Submitted by:	John Dyson, with a little help from me
 1994-09-12 11:31:36 +00:00
dg
d42dae3660 Fixed problem with no swap on boot device, but there is some on an 
alternate device (as specified via kernel config file)...that casues
the machine to panic.
 1994-09-11 03:55:39 +00:00
dg
ec8e5a16d9 Disabled a debugging printf. 1994-09-06 17:53:24 +00:00
dg
0a37b9feee Simple changes to paging algorithms...but boy do they make a difference. 
FreeBSD's paging performance has never been better. Wow.

Submitted by:	John Dyson
 1994-09-06 11:28:46 +00:00
dg
ff6fc2bc2a Whoops, accidently left out some pieces of the munmapfd patch. 1994-09-02 15:06:51 +00:00
dg
890c2cf256 Removed all vestiges of tlbflush(). Replaced them with calls to pmap_update(). 
Made pmap_update an inline assembly function.
 1994-09-02 04:12:26 +00:00
dg
16e35aa368 Fixed bug caused by change of rlimit variables to quad_t's. The bug was in 
using min() to calculate the minimum of rss_cur,rss_max - since these
are now quad_t's and min() takes u_ints...the comparison later for exceeding
the rss limit was always true - resulting in rather serious page thrashing.
Now using new qmin() function for this purpose.

Fixed another bug where PG_BUSY pages would sometimes be paged out (bad!).
This was caused by the PG_BUSY flag not being included in a comparison.
 1994-08-30 18:27:44 +00:00
dg
9bf406e501 Patches from John Dyson to improve swap code efficiency. 
Religiously add back pmap_clear_modify() in vnode_pager_input until we figure
out why system performance isn't what we expect.

Submitted by:	John Dyson (swap_pager) & David Greenman (vnode_pager)
 1994-08-29 06:23:19 +00:00
dg
4d4250da00 1) Changed ddb into a option rather than a pseudo-device (use options DDB 
in your kernel config now).
2) Added ps ddb function from 1.1.5. Cleaned it up a bit and moved into its
   own file.
3) Added \r handing in db_printf.
4) Added missing memory usage stats to statclock().
5) Added dummy function to pseudo_set so it will be emitted if there
   are no other pseudo declarations.
 1994-08-27 16:14:39 +00:00
paul
ef6f4b86ab Made idempotent 
Reviewed by:
Submitted by:
 1994-08-21 07:19:45 +00:00
wollman
f9fc827448 Fix up some sloppy coding practices: 
- Delete redundant declarations.
- Add -Wredundant-declarations to Makefile.i386 so they don't come back.
- Delete sloppy COMMON-style declarations of uninitialized data in
  header files.
- Add a few prototypes.
- Clean up warnings resulting from the above.

NB: ioconf.c will still generate a redundant-declaration warning, which
is unavoidable unless somebody volunteers to make `config' smarter.
 1994-08-18 22:36:09 +00:00
dg
90f432ed61 Fixed vm_page_deactivate to deal with getting called with a page that's 
not on any queue. This is an old patchkit days fix.

Reviewed by:	John Dyson and David Greenman
Submitted by:	originally by Paul Mackerras
 1994-08-10 03:09:37 +00:00
dg
82430e77cf Removed an old, obsolete call to vmmeter(). This is called now in the 
schedcpu() routine in kern/kern_synch.c. This extra call to vmmeter() in
vm_glue.c was what was totally messing up the load average calculations.
 1994-08-09 10:42:41 +00:00
dg
5f96899afd Made pmap_kenter "TLB safe". ...and then removed all the pmap_updates that 
are no longer needed because of this.
 1994-08-07 14:53:27 +00:00
dg
81dc370a9d Provide support for upcoming merged VM/buffer cache, and fixed a few bugs 
that haven't appeared to manifest themselves (yet).

Submitted by:	John Dyson
 1994-08-07 13:10:43 +00:00
dg
d54669e82c Fixed various prototype problems with the pmap functions and the subsequent 
problems that fixing them caused.
 1994-08-06 10:25:50 +00:00
dg
8b20309268 Incorporated post 1.1.5 work from John Dyson. This includes performance 
improvements via the new routines pmap_qenter/pmap_qremove and pmap_kenter/
pmap_kremove. These routine allow fast mapping of pages for those
architectures that have "normal" MMUs. Also included is a fix to the
pageout daemon to properly check a queue end condition.

Submitted by:	John Dyson
 1994-08-06 09:15:42 +00:00
dg
f35b3c52c8 Enabled page table preloading of cached objects. 
Submitted by:	John Dyson
 1994-08-06 09:00:50 +00:00
dg
89acf22c68 Added some code that was accidently left out early in the 1.x -> 2.0 VM 
system conversion.
Submitted by:	John Dyson
 1994-08-04 19:40:47 +00:00
dg
0711a9cff6 Integrated VM system improvements/fixes from FreeBSD-1.1.5. 1994-08-04 03:06:48 +00:00
dg
8d205697aa Added $Id$ 1994-08-02 07:55:43 +00:00
dg
0e87163cbf Removed all code related to the pagescan daemon, and changed 'act_count' 
adjustments to compensate for a world without the pagescan daemon.
 1994-08-01 11:25:45 +00:00
dg
0d458db402 Don't move the page's position in the active queue if it is busy or 
held. John has noticed some stability problems when doing this.
 1994-06-06 11:56:27 +00:00
rgrimes
2469c867a1 The big 4.4BSD Lite to FreeBSD 2.0.0 (Development) patch. 
Reviewed by:	Rodney W. Grimes
Submitted by:	John Dyson and David Greenman
 1994-05-25 09:21:21 +00:00
rgrimes
8fb65ce818 BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00