summaryrefslogtreecommitdiffstats
path: root/sys/vm/vm_param.h
Commit message (Collapse)AuthorAgeFilesLines
* Remove the v_cache_min and v_cache_max sysctls. They are unused and havemarkj2015-09-111-2/+2
| | | | | | | no effect. Reviewed by: alc Sponsored by: EMC / Isilon Storage Division
* Rename global cnt to vm_cnt to avoid shadowing.bdrewery2014-03-221-7/+7
| | | | | | | | | | | | | | To reduce the diff struct pcu.cnt field was not renamed, so PCPU_OP(cnt.field) is still used. pc_cnt and pcpu are also used in kvm(3) and vmstat(8). The goal was to not affect externally used KPI. Bump __FreeBSD_version_ in case some out-of-tree module/code relies on the the global cnt variable. Exp-run revealed no ports using it directly. No objection from: arch@ Sponsored by: EMC / Isilon Storage Division
* Remove unused definition for CTL_VM_NAMES.zont2013-08-091-15/+0
| | | | Suggested by: bde
* Unbreak sysctl ABI changes introduced in r253662zont2013-07-291-2/+4
| | | | Requested by: bde
* Remove define and documentation for vm_pageout_algorithm missed in r253587zont2013-07-261-4/+2
|
* On Alan's advice, rather than do a wholesale conversion on a singlekmacy2010-04-301-0/+8
| | | | | | | | | | | | architecture from page queue lock to a hashed array of page locks (based on a patch by Jeff Roberson), I've implemented page lock support in the MI code and have only moved vm_page's hold_count out from under page queue mutex to page lock. This changes pmap_extract_and_hold on all pmaps. Supported by: Bitgravity Inc. Discussed with: alc, jeffr, and kib
* Fix CTL_VM_NAMES.ru2007-10-161-8/+8
|
* Correct two comments.alc2007-04-191-2/+2
| | | | Submitted by: Michael Plass
* /* -> /*- for license, minor formatting changesimp2005-01-071-1/+1
|
* #include <vm/vm_param.h> instead of <machine/vmparam.h> (the formerdes2004-11-081-6/+6
| | | | | | | | | | | | includes the latter, but also declares variables which are defined in kern/subr_param.c). Change som VM parameters from quad_t to unsigned long. They refer to quantities (size limits for text, heap and stack segments) which must necessarily be smaller than the size of the address space, so long is adequate on all platforms. MFC after: 1 week
* Second half of the dev_t cleanup.phk2004-06-171-1/+1
| | | | | | | | | | | The big lines are: NODEV -> NULL NOUDEV -> NODEV udev_t -> dev_t udev2dev() -> findcdev() Various minor adjustments including handling of userland access to kernel space struct cdev etc.
* Remove advertising clause from University of California Regent's license,imp2004-04-061-4/+0
| | | | | | per letter dated July 22, 1999. Approved by: core
* Rev 1.16 renamed VM_METER to VM_TOTAL. This is breaking 3rd-party apps.obrien2003-01-181-0/+1
| | | | | | So add a VM_METER compat define. Submitted by: Andy Fawcett <andy@athame.co.uk>
* Make 'sysctl vm.vmtotal' work properly using updated patch from Hiten.dillon2003-01-111-2/+2
| | | | | | | (the patch in the PR was stale). PR: kern/5689 Submitted by: Hiten Pandya <hiten@unixdaemons.com>
* Make MAXTSIZ, DFLDSIZ, MAXDSIZ, DFLSSIZ, MAXSSIZ, SGROWSIZ loaderps2001-10-101-0/+6
| | | | | | | tunable. Reviewed by: peter MFC after: 2 weeks
* Change the way information about swap devices is exported to be moretmm2001-06-011-0/+12
| | | | | | | | canonical: define a versioned struct xswdev, and add a sysctl node handler that allows the user to get this structure for a certain device index by specifying this index as last element of the MIB. This new node handler, vm.swap_info, replaces the old vm.nswapdev and vm.swapdevX.* (where X was the index) sysctls.
* Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"peter1999-12-291-2/+2
| | | | | | is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
* $Id$ -> $FreeBSD$peter1999-08-281-1/+1
|
* Remove (1) "extern" declarations for variables that were previouslyalc1999-06-221-36/+1
| | | | made "static" and (2) initialized but unused variables.
* Set cnt.v_page_size to PAGE_SIZE rather than DEFAULT_PAGE_SIZE so thatalc1999-06-201-3/+3
| | | | | | "vmstat -s" reports the correct value on the Alpha. Submitted by: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
* There is a comment in vm_param.h which doesn't belong to thephk1998-07-221-5/+1
| | | | | | | | | code still left in there. The macros it describes disapeared some- time since 4.4BSD lite. PR: 7246 Reviewed by: phk Submitted by: Stefan Eggers <seggers@semyam.dinoco.de>
* Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are notpeter1997-02-221-1/+1
| | | | ready for it yet.
* Make the long-awaited change from $Id$ to $FreeBSD$jkh1997-01-141-1/+1
| | | | | | | | This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
* This commit does a couple of things:dyson1996-06-261-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Re-enables the RSS limiting, and the routine is now tail-recursive, making it much more safe (eliminates the possiblity of kernel stack overflow.) Also, the RSS limiting is a little more intelligent about finding the likely objects that are pushing the process over the limit. Added some sysctls that help with VM system tuning. New sysctl features: 1) Enable/disable lru pageout algorithm. vm.pageout_algorithm = 0, default algorithm that works well, especially using X windows and heavy memory loading. Can have adverse effects, sometimes slowing down program loading. vm.pageout_algorithm = 1, close to true LRU. Works much better than clock, etc. Does not work as well as the default algorithm in general. Certain memory "malloc" type benchmarks work a little better with this setting. Please give me feedback on the performance results associated with these. 2) Enable/disable swapping. vm.swapping_enabled = 1, default. vm.swapping_enabled = 0, useful for cases where swapping degrades performance. The config option "NO_SWAPPING" is still operative, and takes precedence over the sysctl. If "NO_SWAPPING" is specified, the sysctl still exists, but "vm.swapping_enabled" is hard-wired to "0". Each of these can be changed "on the fly."
* Moved the declaration of boolean_t from <vm/vm_param.h> tobde1995-12-101-9/+1
| | | | | | | | | | | | | | | <sys/types.h> (if KERNEL is defined). This allows removing bogus dependencies on vm stuff in several places (e.g., ddb) and stops <vm_param.h> from depending on <vm_param.h> Added declaration of boolean_t to <vm/vm.h> (if KERNEL is not defined). It never belonged in <vm/vm_param.h>. Unfortunately, it is required for some vm headers that are included by applications. Deleted declarations of TRUE and FALSE from <vm/vm_param.h>. They are defined in <sys/param.h> if KERNEL is defined and we'll soon find out if any applications depend on them being defined in a vm header.
* These changes embody the support of the fully coherent merged VM buffer cache,dg1995-01-091-61/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | much higher filesystem I/O performance, and much better paging performance. It represents the culmination of over 6 months of R&D. The majority of the merged VM/cache work is by John Dyson. The following highlights the most significant changes. Additionally, there are (mostly minor) changes to the various filesystem modules (nfs, msdosfs, etc) to support the new VM/buffer scheme. vfs_bio.c: Significant rewrite of most of vfs_bio to support the merged VM buffer cache scheme. The scheme is almost fully compatible with the old filesystem interface. Significant improvement in the number of opportunities for write clustering. vfs_cluster.c, vfs_subr.c Upgrade and performance enhancements in vfs layer code to support merged VM/buffer cache. Fixup of vfs_cluster to eliminate the bogus pagemove stuff. vm_object.c: Yet more improvements in the collapse code. Elimination of some windows that can cause list corruption. vm_pageout.c: Fixed it, it really works better now. Somehow in 2.0, some "enhancements" broke the code. This code has been reworked from the ground-up. vm_fault.c, vm_page.c, pmap.c, vm_object.c Support for small-block filesystems with merged VM/buffer cache scheme. pmap.c vm_map.c Dynamic kernel VM size, now we dont have to pre-allocate excessive numbers of kernel PTs. vm_glue.c Much simpler and more effective swapping code. No more gratuitous swapping. proc.h Fixed the problem that the p_lock flag was not being cleared on a fork. swap_pager.c, vnode_pager.c Removal of old vfs_bio cruft to support the past pseudo-coherency. Now the code doesn't need it anymore. machdep.c Changes to better support the parameter values for the merged VM/buffer cache scheme. machdep.c, kern_exec.c, vm_glue.c Implemented a seperate submap for temporary exec string space and another one to contain process upages. This eliminates all map fragmentation problems that previously existed. ffs_inode.c, ufs_inode.c, ufs_readwrite.c Changes for merged VM/buffer cache. Add "bypass" support for sneaking in on busy buffers. Submitted by: John Dyson and David Greenman
* Added $Id$dg1994-08-021-1/+3
|
* The big 4.4BSD Lite to FreeBSD 2.0.0 (Development) patch.rgrimes1994-05-251-0/+30
| | | | | Reviewed by: Rodney W. Grimes Submitted by: John Dyson and David Greenman
* BSD 4.4 Lite Kernel Sourcesrgrimes1994-05-241-0/+159
OpenPOWER on IntegriCloud