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2445 Commits

Author SHA1 Message Date
David Greenman
2e1e24dd28 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
David Greenman
defb6744ba Changed I/O error messages to be somewhat less cryptic. Removed a piece 
of unused code.
 1994-10-14 00:57:19 +00:00
David Greenman
28e12d63f3 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
David Greenman
35c10d2239 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
Poul-Henning Kamp
05f0fdd26a Cosmetics: unused vars, ()'s, #include's &c &c to silence gcc. 
Reviewed by:	davidg
 1994-10-09 01:52:19 +00:00
David Greenman
da8b3304fb Call resetpriority, not setpriority() ...oops. 
Submitted by:	John Dyson
 1994-10-09 00:18:22 +00:00
Poul-Henning Kamp
4e39a515d4 Cosmetics. Unused vars and other warnings. 1994-10-07 07:23:04 +00:00
David Greenman
8e58bf6875 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
David Greenman
5cedf6806b 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
David Greenman
8baf4dac64 John Dyson's work in progress. Not currently used. 1994-10-04 07:32:08 +00:00
David Greenman
edaaafdb0f 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
Poul-Henning Kamp
623ae52e4e GCC cleanup. 
Reviewed by:
Submitted by:
Obtained from:
 1994-10-02 17:48:58 +00:00
David Greenman
1ffd2a2cbd 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
David Greenman
5992708aea Fixed another bug, and cleaned up the code. 1994-09-27 20:45:24 +00:00
David Greenman
0d040c7eae Fixed multiple bugs in previous version of vm_page_alloc_contig. 1994-09-27 19:34:16 +00:00
David Greenman
d3c2cf7a80 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
David Greenman
c770b47d56 Removed unimplemented subr_rmap.c and unused references to it. 1994-09-25 22:31:11 +00:00
David Greenman
426de76026 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
David Greenman
11b224dca2 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
David Greenman
cde7257454 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
David Greenman
ed74321b1a 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
David Greenman
55e8e4749f 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
David Greenman
db141545dc Disabled a debugging printf. 1994-09-06 17:53:24 +00:00
David Greenman
a647a30954 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
David Greenman
90324b078e Whoops, accidently left out some pieces of the munmapfd patch. 1994-09-02 15:06:51 +00:00
David Greenman
2c7a40c7ca 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
David Greenman
a6ca859eb1 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
David Greenman
fff93ab600 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
David Greenman
8a129caed5 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 Richards
3301cc3c0a Made idempotent 
Reviewed by:
Submitted by:
 1994-08-21 07:19:45 +00:00
Garrett Wollman
f23b4c91c4 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
David Greenman
28b5c68f2f 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
David Greenman
92a34c0c6d 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
David Greenman
8339815ff9 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
David Greenman
a481f20029 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
David Greenman
c87801fe54 Fixed various prototype problems with the pmap functions and the subsequent 
problems that fixing them caused.
 1994-08-06 10:25:50 +00:00
David Greenman
16f62314cd 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
David Greenman
f720dc2ceb Enabled page table preloading of cached objects. 
Submitted by:	John Dyson
 1994-08-06 09:00:50 +00:00
David Greenman
d6a6c0f60c 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
David Greenman
bbc0ec5284 Integrated VM system improvements/fixes from FreeBSD-1.1.5. 1994-08-04 03:06:48 +00:00
David Greenman
3c4dd3568f Added $Id$ 1994-08-02 07:55:43 +00:00
David Greenman
03e6c2532f 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
David Greenman
0a620217f0 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
Rodney W. Grimes
26f9a76710 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
Rodney W. Grimes
df8bae1de4 BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00