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code is all conditionalized on __HAVE_TIMECOUNTER, and not
enabled on any platforms.
adjtime(2) support exists, courtesy of nordin@, sysctl(2) support
and a concept of quality for each time source attached exists.
High quality time sources exists for PIIX4 ACPI timer as well as
some AMD power management chips. This will have to be redone
once we actually add ACPI support (at that time we need to use
the ACPI interfaces to get at these clocks).
ok art@ ken@ miod@ jmc@ and many more
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encapsulating all such access into wall-defined functions
that makes sure locking is done as needed.
It also cleans up some uses of wall time vs. uptime some
places, but there is sure to be more of these needed as
well, particularily in MD code. Also, many current calls
to microtime() should probably be changed to getmicrotime(),
or to the {,get}microuptime() versions.
ok art@ deraadt@ aaron@ matthieu@ beck@ sturm@ millert@ others
"Oh, that is not your problem!" from miod@
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Introduce the cpu_info structure, p_cpu field in struct proc and global
scheduling context and various changed code to deal with this. At the
moment no architecture uses this stuff yet, but it will allow us slow and
controlled migration to the new APIs.
All new code is ifdef:ed out.
ok deraadt@ niklas@
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remove alpha specific definition of ncpus.
OK (and tested on alpha) deraadt@
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ok art deraadt
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From NetBSD.
Tested by many people, ok art@.
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from Patrick Latifi <patrick.l@hermes.usherb.ca>
ok jason@ tedu@
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add e_flags to struct emul. this stores on/off and native flags.
check for emul enabled in check_exec(). gather all the emuls into a
emulsw so a sysctl can find them. create sysctl. move maxhdrsiz calcualation
into init_main so it cleans up sys_execve codepath. teach sysctl utility
to grok kern.emul hierarchy.
requested and ok deraadt@ some comments from mickey@
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rescinded 22 July 1999. Proofed by myself and Theo.
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stack protection when building kernels. Intended to be used on installation
media, with tight space constraints - currently, only added where
SMALL_KERNEL was already defined.
Not thoroughly tested, but requested by deraadt.
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some style input itojun@ tdeval@ toby@
tested, mostly by deraadt, on i386, macppc, vax, sparc64
ok deraadt@ miod@
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niklas@ tdeval@ ok
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still calculate the memory limits for proc0 at after the autoconf is done.
miod@ testing on everything; art@ ok
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remaining instances of them with appropriate copy(9) usage.
ok art@, tested on all arches unless my memory is non-ECC
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initialization after domaininit().
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they are and declarre 'em accordingly also removing private externies of those
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machines or some configurations or in some phase of the moon (we actually
don't know when or why) files disappeared. Since we've not been able to
track down the problem in two weeks intense debugging and we need -current
to be stable, back out everything to a state it had before UBC.
We apologise for the inconvenience.
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Today we add a pmap argument to pmap_update() and allocate map entries for
kernel_map from kmem_map instead of using the static entries. This should
get rid of MAX_KMAPENT panics. Also some uvm_loan problems are fixed.
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This time we're getting rid of KERN_* and VM_PAGER_* error codes and
use errnos instead.
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code is written mostly by Chuck Silvers <chuq@chuq.com>/<chs@netbsd.org>.
Tested for the past few weeks by many developers, should be in a pretty stable
state, but will require optimizations and additional cleanups.
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UBC, but prerequsites for it.
- Create a daemon that processes async I/O (swap and paging in the future)
requests that need processing in process context and that were processed
in the pagedaemon before.
- Convert some ugly ifdef DIAGNOSTIC code to less intrusive KASSERTs.
- misc other cleanups.
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for the virtual address.
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(Look ma, I might have broken the tree)
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instead of doing fork1, cpu_set_kpc. This lets us retire cpu_set_kpc and
avoid a multiprocessor race.
This commit breaks vax because it doesn't look like any other arch, someone
working on vax might want to look at this and try to adapt the code to be
more like the rest of the world.
Idea and uvm parts from NetBSD.
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- Use malloc/free instead of MALLOC/FREE for variable sized allocations.
- Move the memory inheritance code to sys/mman.h and rename from VM_* to MAP_*
- various cleanups and simplifications.
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occurs on the fs with large block size. We can have situation where
numcleanbufs < locleanbufs and numdirtybufs < hidirtybufs. So, buffer
flushing daemon never wakeups and other processes asleep forever waiting
for a clean buffers. We count pages only for the dirty buffers which are
on freelist(BQ_DIRTY).
niklas@ found this.
Rename flasher to cleaner. Suggested by costa@.
Discussed with niklas@, costa@, millert@, art@.
Ok deraadt@.
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start of raid autoconfiguration thread. Required for upcoming RAIDFrame
code update.
From Thierry Deval <TDeval@PrimeOBJ.COM>
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problem when syncer can't do its work because of vnode locks (PR1983).
This also solves our problem where bigger number of buffers results in a
much worse perfomance. In my configuration (i386, 128mb, BUFCACHEPERCENT=35)
this speedup tar -xzf ports.tar.gz in 2-4 times. In configuration with
low number of buffers and softupdates this may slowdown some operations
up to 15%.
The major difference with current buffer cache is that new implementation
uses separate queues for dirty and clean buffers. I.e. BQ_LRU and BQ_AGE
replaced by BQ_CLEAN and BQ_DIRTY. This simplifies things a lot and
doesn't affect perfomance in a bad manner.
Thanks to art and costa for pointing on errors.
Tested by brad, millert, naddy, art, jj, camield
art, millert ok.
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systems which want configuration to finish late, like I2O. Implemented via
a general hooks mechanism which the shutdown hooks have been converted to
use as well. It even has manpages!
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everywhhere.
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