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AgeCommit message (Collapse)Author
2014-04-30Make sure we flush discarded pages even if the number of hash buckets doesn'tMark Kettenis
change. From Pedro Martelletto via bitrig. ok beck@, krw@
2014-04-30Assigning list pointers doesn't really work with doubly linked lists. UseMark Kettenis
a remove-and-insert-all-items approach for now and remove the comments that suggest manipulating list pointers. Pointed out by Pedro Martelletto. ok beck@, krw@, mikeb@
2014-04-29Replace 1 << PAGE_SHIFT with PAGE_SIZE.Mark Kettenis
ok beck@, miod@
2014-04-13compress code by turning four line comments into one line comments.Ted Unangst
emphatic ok usual suspects, grudging ok miod
2014-04-10rename waitable to waitok as suggested by kettenisTed Unangst
2014-04-08add IO_NOCACHE flag to vop_write arguments, which in turn sets B_NOCACHEBob Beck
on the written buffers. Use the flag for writes from the page daemon to ensure that we free buffers written out by the page daemon rather than caching them. ok kettenis@
2014-04-05Fix logic error and prevent theoretical infinite loop in the worst case scenarioMiod Vallat
in uvm_pmr_rootupdate(). Issue spotted and fix provided by Kieran Devlin.
2014-04-03add a uvm_yield function and use it in the reaper path to prevent theTed Unangst
reaper from hogging the cpu. it will do the kernel lock twiddle trick to allow other CPUs a chance to run, and also checks if the reaper has been running for an entire timeslice and should be preempted. ok deraadt
2014-04-03uvm_fault() will try to fault neighbouring pages for the MADV_NORMAL case,Miod Vallat
which is the default, unless the fault call is explicitly used to wire a given page. The amount of pages being faulted in was borrowed from the FreeBSD VM code, about 15 years ago, at a time FreeBSD was only reliably running on 4KB page size systems. It is questionable whether faulting the same amount of pages, on platforms where the page size is larger, is a good idea, as it may cause too much I/O. Add an uvmfault_init() routine, which will compute the proper number of pages at runtime, depending upon the actual page size, and attempting to fault in the same overall size the previous code would have done with 4KB pages. ok tedu@
2014-03-31In uvm_fault(), when attempting to map backpages and forwpages, deferMiod Vallat
the pmap_update() to the end of the loop, rather than after each loop iteration - which might not even end up invoking pmap_enter()! Quiet blessing from guenther@ deraadt@
2014-03-28Reduce uvm include madness. Use <uvm/uvm_extern.h> instead ofMartin Pieuchot
<uvm/uvm.h> if possible and remove double inclusions. ok beck@, mlarkin@, deraadt@
2014-03-26Move p_emul and p_sigcode from proc to process.Philip Guenther
Tweak the handling of ktrace EMUL when changing ktracing: only generate one per process (not one per thread) and pass the correct proc pointer down to the VFS layer. Permit generating of NAMI and CSW records inside ktrace(2) itself. ok deraadt@ millert@
2014-03-21Allow for two more pmap-specific bits in vm_page pg_flags. DefineMiod Vallat
PG_PMAPMASK as all the possible pmap-specific bits (similar to the other PG_fooMASK) to make sure MI code does not need to be updated, the next time more bits are allocated to greedy pmaps. No functional change, soon to be used by the (greedy) mips64 pmap.
2014-02-06add some more bufbackoff calls. uvm_wait optimistically (?), uvm_wait_plaTed Unangst
after analysis and testing. when flushing a large mmapped file, we can eat up all the reserve bufs, but there's a good chance there will be more clean ones available. ok beck kettenis
2014-02-06parenthesis to make the math right. ok beck kettenisTed Unangst
2014-02-04reduce the length of some pool names. ok deraadt guenther mpiTed Unangst
2014-01-30Move declaration of struct vm_page_md from <machine/vmparam.h> toMiod Vallat
<machine/pmap.h> where it belongs, and compensate in <uvm/uvm_extern.h> by including <uvm/uvm_pmap.h> before <uvm/uvm_page.h>. Tested on all MACHINE_ARCH but amd64 and i386 (and hppa64).
2014-01-23unifdef -D__HAVE_VM_PAGE_MD - no functional change.Miod Vallat
2014-01-01Remove __HAVE_PMAP_PHYSSEG support, nothing uses it anymore.Miod Vallat
2013-12-09forgot to say: aobj grow/shrink tweaks are mostly from Pedro Martelletto,Marc Espie
like the rest of tmpfs
2013-12-08allow aobj to shrink grow, for tmpfs supportMarc Espie
A few tweaks asked by kettenis@ (code doesn't affect systems without mounted tmpfs at all) okay beck@
2013-11-24Replace the swapdev CIRCLEQ with a TAILQ and replace the manually rolledJoel Sing
list traversals with LIST_FOREACH. ok beck@ krw@
2013-11-21remove the #define b_cylinder b_resid from bufs. i hated theDavid Gwynne
overloading of that thing. the only hardware that seems to care about cylinders in our tree are floppy drives, and the drivers for those calculate their own cylinders from logical block addresses and ignore whatever the rest of the kernel thought b_cylinders should be. most of this diff is moving the floppy drivers to using b_resid as a resid and using that as part of the calculation for real cylinder values. the rest of the diff is getting rid of the useless assignments to b_cylinder that dont get used by anything (now that disksort is gone). ok miod@
2013-11-20Update comments mentioning `resource maps' to mention `extents' instead.Miod Vallat
Resource maps have been removed more than 10 years ago, it's about time to update comments to better match reality. No functional change.
2013-11-09Add KASSERT()s to tsleep() and msleep() to verify that bogus flagsPhilip Guenther
aren't being passed to them. Fix UVM_WAIT() to not pass PNORELOCK to tsleep(), as that flag only does something with msleep(). ok beck@ dlg@
2013-11-06remove some abuse of bufqs where they were overloaded to store workq_tasksDavid Gwynne
for completing swap io against files. this in turn bloated struct buf. this moves from using workq_tasks to the task api, but stores the task handler in vndbuf which is allocated specially for every io in this path anyway. ok kettenis@ beck@
2013-11-05new function uvm_hibswap() finds a the largest free zone in swap, whichTheo de Raadt
hibernate can use place the data. ok mlarkin
2013-11-04If compiled for hibernate, reserve the last page of the primary swapTheo de Raadt
space (in case we need to place a hibernate signature there) ok miod
2013-11-04improve a panic messageTheo de Raadt
2013-11-02fix some commentsTheo de Raadt
2013-11-02No need to cast constants or simple variables to (daddr_t). UseKenneth R Westerback
(u_int64_t) instead of (daddr_t) when casting a variable in an expression passed to DL_SETDSIZE(). Change a variable counting open files from daddr_t to int64_t. ok deraadt@ with the tweak to fix that pesky expression.
2013-09-21Don't invoke pmap_copy() on map holes.Miod Vallat
2013-08-13Make the tree compile again on architectures without drm(4).Mark Kettenis
ok maja@, miod@, jsg@
2013-07-09back out the cache flipper temporarily to work out of tree.Bob Beck
will come back soon. ok deraadt@
2013-06-21Buffer cache pages are wired but not counted as such. Therefore we have toMark Kettenis
set the wire count on the pages to 0 before we call uvm_pagefree() on them, just like we do in buf_free_pages(). Otherwise the wired pages counter goes negative. While there, also sprinkle some KASSERTs in there that buf_free_pages() has as well. ok beck@
2013-06-11High memory page flipping for the buffer cache.Bob Beck
This change splits the buffer cache free lists into lists of dma reachable buffers and high memory buffers based on the ranges returned by pmemrange. Buffers move from dma to high memory as they age, but are flipped to dma reachable memory if IO is needed to/from and high mem buffer. The total amount of buffers allocated is now bufcachepercent of both the dma and the high memory region. This change allows the use of large buffer caches on amd64 using more than 4 GB of memory ok tedu@ krw@ - testing by many.
2013-06-11final removal of daddr64_t. daddr_t has been 64 bit for a long enoughTheo de Raadt
test period; i think 3 years ago the last bugs fell out. ok otto beck others
2013-06-07Add proper mmap(2) support for drm(4)/inteldrm(4). This changes theMark Kettenis
DRM_I915_GEM_MMAP and DRM_I915_GEM_MMAP_GTT ioctls to be compatible with Linux. This also is the first step that moves us away from accessing all graphics memory through the GTT, which should make things faster. ok tedu@ (for the uvm bits)
2013-05-30in the brave new world of void *, we don't need caddr_t castsTed Unangst
2013-05-30UVM_UNLOCK_AND_WAIT no longer unlocks, so rename it to UVM_WAIT.Ted Unangst
2013-05-30remove lots of comments about locking per beck's requestTed Unangst
2013-05-30remove simple_locks from uvm code. ok beck deraadtTed Unangst
2013-05-29uvm_loan has not (ever) been compiled or used.Ted Unangst
2013-05-23the simplelock is a lieTed Unangst
2013-05-14restore ABI compatibility; guentherMiod Vallat
2013-05-14Remove `swapin' and `swapout' from uvm statistics, since we don't swap outMiod Vallat
u areas since quite a few years now.
2013-05-03fix mem leak in swapmountFlorian Obser
pointed out by jsg@ ok tedu@
2013-04-17it is better if we always start addr at something reasonable, andTed Unangst
then move it up. previous revision would leave addr uninitialized. pointed out by oga at nicotinebsd.org
2013-04-17do not permanently avoid the BRKSIZ gap in the heap for mmap. after someTed Unangst
allocations have been made, open it up. this is a variation on a previous change that was lost in the great uvm map rewrite. allows some platforms, notably i386, to fully utilize their address space.
2013-04-17Unbreak and cleanup diskless swap automount.Florian Obser
Initial diff to replace unclear short variable name "nd" by "nfs_diskless" and to display the real nfs path to swap in pstat -s by deraadt@ Testing by me revealed diskless swap automount was broken since some time. Fix this by passing and using the correct vnode in nfs_diskless to swapmount(). Lots of input / help deraadt@, tweaks by deraadt@ OK deraadt@
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