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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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ok art@
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OK deraadt@ and millert@
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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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and can not work from a stack address only. Mention this and abort instead of
printing a wrong trace. (prefer kern.splassert=3 to =2 on these platforms)
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necessary. Also, let the P2 functions return to P1 addresses, instead of
jumping to their own P1 image before returning. This gives a ~15% speedup.
From NetBSD, thanks uwe@netbsd for spotting this in the sh4 docs!
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tested by maja@
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the hp300 related ones currently in use. CN_NORMAL becomes CN_LOWPRI,
CN_INTERNAL becomes CN_MIDPRI and CN_REMOTE becomes CN_HIGHPRI.
ok miod@
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rpc/pmap_prot.h collide.. "struct pmap" from the kernel should not make
it out to userland.
ok miod
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directive can select between MI and MD versions of these files. At
the same time, adjust the boot programs to pick exactly what they need,
instead of the 7 or 8 mechanisms previously used.
There will be some fallout from this, but testing it all by myself is a
ridiculously slow process; it will be finished in-tree.
Various developers were very nice and avoided making fun of me when I
was gibbering in the corner..
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- Move the functionality of choosing a process from cpu_switch into
a much simpler function: cpu_switchto. Instead of having the locore
code walk the run queues, let the MI code choose the process we
want to run and only implement the context switching itself in MD
code.
- Let MD context switching run without worrying about spls or locks.
- Instead of having the idle loop implemented with special contexts
in MD code, implement one idle proc for each cpu. make the idle
loop MI with MD hooks.
- Change the proc lists from the old style vax queues to TAILQs.
- Change the sleep queue from vax queues to TAILQs. This makes
wakeup() go from O(n^2) to O(n)
there will be some MD fallout, but it will be fixed shortly.
There's also a few cleanups to be done after this.
deraadt@, kettenis@ ok
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otherwise just adding M_ZERO to malloc() and removing the immediately
adjacent memset(,0,).
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the holes a MMU may have from a given vm_map. This will be automagically
invoked for newly created vmspaces.
On platforms with MMU holes (e.g. sun4, sun4c and vax), this prevents
mmap(2) hints which would end up being in the hole to be accepted as valid,
causing unexpected signals when the process tries to access the hole
(since pmap can not fill the hole anyway).
Unfortunately, the logic mmap() uses to pick a valid address for anonymous
mappings needs work, as it will only try to find an address higher than the
hint, which causes all mmap() with a hint in the hole to fail on vax. This
will be improved later.
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Spotted by kettenis
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of every iteration.
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ping times on slow links; from mickey
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- in __pmap_pv_enter, only walk the pv list to search for writeable mappings
if we are ading a readonly mapping.
- im pmap_protect, do not invoke pmap_extract(), instead directly extract
the paddr from the pte we have already computed a few lines above.
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interrupts get counted; from mickey
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cpu_disklabel can go away, since nothing anymore needs to use it; ok miod
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to support hotplug media on most architectures. disklabel setup and
verification done using new helper functions. Disklabels must *always*
have a correct checksum now. Same code paths are used to learn on-disk
location disklabels, to avoid new errors sneaking in. Tested on almost all
cases, testing help from todd, kettenis, krw, otto, dlg, robert, gwk, drahn
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type of all variables to daddr64_t. this includes the APIs for XXsize()
and XXdump(), all range checks inside bio drivers, internal variables
for disklabel handling, and even uvm's swap offsets. re-read numerous
times by otto, miod, krw, thib to look for errors
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(and part of setroot); ok miod
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This changes nothing on legacy architectures, but is a bit faster (and simpler)
on the interesting ones.
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mbuf constants from MD param.h to MI param.h.
Besides being the same on every arch, things will
most probly break if any arch has different values
then the others.
The NMBCLUSTERS constants needs to be MD though;
ok miod@,krw@,claudio@
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ok pedro@
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deraadt@ dlg@.
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at the moment).
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sys/sched.h and use that to check if there's something to do.
kettenis@ thib@ ok
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have cpu_info now, so kill the option.
eyeballed by jsg@ and grange@
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option. Every architecture implements mutexes now.
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deraadt@ ok
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years ago; ok miod
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to go.
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variables from arch/sh/ to arch/landisk/. ok deraadt@
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confused.
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it's a good idea to use atomic.h operations on it. This mechanic
change updates all bit operations on p_flag to atomic_{set,clear}bits_int.
Only exception is that P_OWEUPC is set by MI code before calling
need_proftick and it's automatically cleared by ADDUPC. There's
no reason for MD handling of that flag since everyone handles it the
same way.
kettenis@ ok
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