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to free ranges.
Classify memory based on region with associated use-counter (which is used
to construct a priority list of where to allocate memory).
Based on code from tedu@, help from many.
Ok art@
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based on the same change in amd64.
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Saves every damned driver calling bzero(), and continues the M_ZERO,
PR_ZERO symmetry.
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simplelocks + splhigh().
First part of making it possible to make mpsafe softinterrupts.
"oh yes, definitely" miod@
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levels. This will allow for platforms where soft interrupt levels do not
map to real hardware interrupt levels to have soft ipl values overlapping
hard ipl values without breaking spl asserts.
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a define needed to get to ``private'' functions that needs to be defined
5 or more times isn't much use and may cause namespace issues anyway.
Other archs will probably follow.
Discussed in portugal. "Hell yes" weingart@, ok kettenis@, no
objections miod@
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APM_IOC_{SUSPEND,STANDBY}_REQ: This is to fix an issue with apm suspend
where a call to zzz suspended the machine immediately, not giving anyone
listening for apm events (other than apmd) a chance to deal with the
upcoming change. This hit X hard since the introduction of drm, since it
needs to have time to idle the 3d engine and otherwise get the device
into a recoverable state. Such things are needed until we support
modesetting in the kernel.
Now, instead of forcing a suspend, using ioctl sends out an event similar
to if you had put the lid down, giving all userland applications a
chance to reply.
tested by sthen@ and beck@, especial thanks to sthen for sitting there
while I tried to debug this remotely, I owe him beer.
Prompted by and ok deraadt@
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in seperate variables in struct cpu_info instead
of duplicating the process of extracting it from the signature.
Use this value when determining the bus clock on P6/family 0x6
chips, which fixes speedstep on bernd@'s ThinkPad x200s.
Discussed with several, 'just do it' weingart@, ok mikeb@
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BUS_DMA_NOCACHE flag with guarantees that the dma memory will be mapped
uncached. Some broken/odd hardware needs this.
discussion with miod, toby, art and kettenis. ok miod.
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In order to do that we have to remove all sleeping parts: sleeping
memory allocation and a sleeping lock. Thus we're moving this code
to the spinning lock (mutex) and getting rid of the GDT grow code.
Downside is that now we're pre-allocating 64kb of memory per CPU
from the start, but this might be optimized in future.
This also unifies GDT code and MAXGDTSIZ define across i386 and amd64.
With help from mickey.
ok toby, art
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of ACPI S3 suspend/resume support. This is for i386.
Help/comments from art, toby, marco, jordan, kurt
ok marco@, kurt@
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new function pmap_prealloc_lowmem_ptp() to setup kernel pmap ptp 0 without
the PG_G bit set. This fixes the remaining reaper -> pmap_page_remove
panics. With much diagnostic help from Art and Theo.
ok deraadt@
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pointless and just makes the code different for no reason. This moves i386 and
amd64 bus_dma to being a lot closer to identical.
suggestion to just remove the prefix instead of merge them from deraadt@.
no objections art@, kettenis@, ok weingart@
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the policy for the mlock(2) on this architecture: all users are allowed
to call mlock, while the limit is imposed by the current RLIMIT_MEMLOCK
value.
"makes sense" art, ok hshoexer (who was running with the same change for
about 10 months).
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In short, make cpu_unidle do what signotify used to do and
make signotify use cpu_unidle.
Also, include a cpu_unidle in need_resched, it won't change much right now
but will be needed in the future.
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defines into real functions. since machdep.c is cluttered as it is move them
into bus_space.c (like amd64). a later commit will move the stuff from machdep
across too. since machdep.c is cluttered as it is move them into bus_space.c
(like amd64). a later commit will move the stuff from machdep across too.
some shrinkage stats:
GENERIC.MP 209.66kb
RAMDISK 50.84kb
RAMDISKB 50.04kb
RAMDISC 36.28kb
RAMDISK_CD 168.03kb
don't fill it up all at once!
claudio found no network performance hit. toby thought the code went
looked alright. art@ ok.
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The beginning of i386 segment review/cleanup.
Tested by various people.
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protected by __ISO_C_VISIBLE > 1999. With a little help from miod@.
ok miod@
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which are uniform for the profclock on each cpu in a SMP system (but using
a different seed for each cpu). on all cpus, avoid seeding with a value out
of the [0, 2^31-1] range (since that is not stable)
ok kettenis drahn
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LAPIC IDs and if there are MPBIOSes we handle them with ACPI now.
ok deraadt@
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ok kettenis@
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ok kettenis@
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- provide proper dtoa locks
- use the real strtof implementation
- add strtold, __hdtoa, __hldtoa
- add %a/%A support
- don't lose precision in printf, don't round to double anymore
- implement extended-precision versions of libc functions: fpclassify,
isnan, isinf, signbit, isnormal, isfinite, now that the ieee.h is
fixed
- separate vax versions of strtof, and __hdtoa
- add complex math support. added functions: cacos, casin, catan,
ccos, csin, ctan, cacosh, casinh, catanh, ccosh, csinh, ctanh, cexp,
clog, cabs, cpow, csqrt, carg, cimag, conj, cproj, creal, cacosf,
casinf, catanf, ccosf, csinf, ctanf, cacoshf, casinhf, catanhf,
ccoshf, csinhf, ctanhf, cexpf, clogf, cabsf, cpowf, csqrtf, cargf,
cimagf, conjf, cprojf, crealf
- add fdim, fmax, fmin
- add log2. (adapted implementation e_log.c. could be more acruate
& faster, but it's good enough for now)
- remove wrappers & cruft in libm, supposed to work-around mistakes
in SVID, etc.; use ieee versions. fixes issues in python 2.6 for
djm@
- make _digittoint static
- proper definitions for i386, and amd64 in ieee.h
- sh, powerpc don't really have extended-precision
- add missing definitions for mips64 (quad), m{6,8}k (96-bit) float.h
for LDBL_*
- merge lead to frac for m{6,8}k, for gdtoa to work properly
- add FRAC*BITS & EXT_TO_ARRAY32 definitions in ieee.h, for hdtoa&ldtoa
to use
- add EXT_IMPLICIT_NBIT definition, which indicates implicit
normalization bit
- add regression tests for libc: fpclassify and printf
- arith.h & gd_qnan.h definitions
- update ieee.h: hppa doesn't have quad-precision, hppa64 does
- add missing prototypes to gdtoaimp
- on 64-bit platforms make sure gdtoa doesn't use a long when it
really wants an int
- etc., what i may have forgotten...
- bump libm major, due to removed&changed symbols
- no libc bump, since this is riding on djm's libc major crank from
a day ago
discussed with / requested by / testing theo, sthen@, djm@, jsg@,
merdely@, jsing@, tedu@, brad@, jakemsr@, and others.
looks good to millert@
parts of the diff ok kettenis@
this commit does not include:
- man page changes
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This requires that structures defined within __packed structures must
independently request that they themselves become __packed, too.
worked on with toby
CVS: ----------------------------------------------------------------------
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This "power saving" disables the apic when both cpu cores hit the hlt
instruction which kills our timer.
From FreeBSD.
(poked by kettenis)
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- math.h shouldn't define FLT_EVAL_METHOD, but float.h should (per
C99). remove from math.h, and add proper definitions in float.h
ok millert@
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Right now when mi_switch picks up the same proc, we didn't clear the
flag which would mean that every time we service an AST we would attempt
a context switch. For some architectures, amd64 being probably the
most extreme, that meant attempting to context switch for every
trap and interrupt.
Now we clear_resched explicitly after every context switch, even if it
didn't do anything. Which also allows us to remove some more code
in cpu_switchto (not done yet).
miod@ ok
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parameter and returns an aligned random load address for position
independent executables to use. This also adds three new vmparam.h
defines to specify the maximum address, minimum address and minimum
allowed alignment for uvm_map_pie() to use. The PIE address range
for i386 was carefully selected to work well within the i386 W^X
framework.
With much help and feedback from weingart@.
okay weingart@, miod@, kettenis@, drahn@
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* For amd64, remove pcibios traces.
* make RBUS_IO_START, RBUS_IO_SIZE, RBUS_MIN_START and RBUS_MEM_SIZE
(on i386) configurable via kernel options.
* Remove unneeded headers.
* Some cleanups.
originally reported in pr/5829 and tested by viq <viq at viq dot ath dot cx>.
fixes ian@ laptop too.
kettenis@ and miod@ agrees that although not perfect, this is the right
direction.
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Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.
OK deraadt@
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own page 0, as discussed with miod (and many others previously, including
art and toby). On sparc, make this __LDPGSZ because PAGE_SIZE is non-constant
ok miod tedu
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config file, only configure the driver when we have an AMD Geode LX
CPU and the graphics processor is available.
mainbus part by miod, ok miod, matthieu
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See http://download.intel.com/technology/security/downloads/31516804.pdf
for more information.
ok deraadt@ 'looks ok to me' djm@
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ok dlg@, tested by dlg@, oga@, jsg@, deraadt@
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ok krw@
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ok weingart@
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and do an ipi_nop cross-call from signotify() instead.
ok miod@
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pointed out by and ok drahn@, toby@;
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ok marco@
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before pcibios(4), and then.... if acpi(4) attaches, skip pcibios(4) since
it messes the machines up. Fixes claudio's HP dl320 G5, and almost assuredly
others.
ok kettenis
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also assume that 386 cpus are really unknown, and promote them to 486
instead of panic.
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code. At this moment all architectures get the copy of the old code
except i386 which gets a new shiny implementation that doesn't spin
at splhigh (doh!) and doesn't try to grab the biglock when releasing
the biglock (double doh!).
Shaves 10% of system time during kernel compile and might solve a few
bugs as a bonus.
Other architectures coming shortly.
miod@ deraadt@ ok
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a single device node will talk to the right kernel code automatically.
ok deraadt
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uniform. as a result shared code like acpi needs less #ifdef's
ok marco kettenis
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