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in the MI code.
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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 deraadt
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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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shortly.
OK todd@
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ok thib beck art
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file copies to nfsv2 causes the system to eventually peg the console.
On the console ^T indicates that the load is increasing rapidly, ddb
indicates many calls to getbuf, there is some very slow nfs traffic
making none (or extremely slow) progress. Eventually some machines
seize up entirely.
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biowait() reads that do *not* come from the buffer cache - we use the
B_RAW flag to identify these at art's suggestion - since it makes sense
and the flag was not being used. this just flags all these buffers with
B_RAW - biodone already ignores returned buffers marked B_RAW.
ok art@
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needs the few MD definitions they (sometimes) provide; only binutils is
interested in them, but binutils provide their own include files for that
purpose anyway.
ok deraadt@ kettenis@
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free() calls; prodded by chl@, ok krw@
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ok dlg@ miod@
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sgi.
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behind it. OK miod@, drahn@
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tested by maja@
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bpf(4) are different enough so that the split makes sense -- this is necessary
to make bpf(4) cloneable.
requested deraadt@, OK thib@
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for RB_DFLTROOT; ok miod
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instead of using a fixed number for the time base, measure the
"accurate" value based on the rtc.
ok kettenis@ mbalmer@
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and nothing in the MI kernel code (and in the MD arm code) uses these values.
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ok deraadt@
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remove pool_cache code. it was barely used, and quite complex. it's
silly to have both a "fast" and "faster" allocation interface. provide
a ctor/dtor interface, and convert the few cache users to use it. no
caching at this time.
use mutexes to protect pools. they should be initialized with pool_setipl
if the pool may be used in an interrupt context, without existing spl
protection.
ok art deraadt thib
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which are not installed to userland; ok drahn
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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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for there be dragons in xscale cache and it would not be cleaned correctly,
leading to wrong pcb data being restored on resume and eventually causing
panics.
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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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issues upon resume.
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otherwise just adding M_ZERO to malloc() and removing the immediately
adjacent memset(,0,).
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previously applied to other archs deleting a memset() this time. e.g.
- if ((mapstore = malloc(mapsize, M_DEVBUF,
- (flags & BUS_DMA_NOWAIT) ? M_NOWAIT : M_WAITOK)) == NULL)
+ if ((mapstore = malloc(mapsize, M_DEVBUF, (flags & BUS_DMA_NOWAIT) ?
+ (M_NOWAIT | M_ZERO) : (M_WAITOK | M_ZERO))) == NULL)
return (ENOMEM);
- memset(mapstore, 0, mapsize);
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ok drahn@
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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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a kernel and setting SDMMC_DEBUG option.
ok deraadt@
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ok miod@ jmc@
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cpu_disklabel can go away, since nothing anymore needs to use it; ok miod
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might even work now (ie. if it works, it is because finding the label
location is now MI code shared for the read & write paths)
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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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need it.
If a USB driver uses timeout(9) functions, the header file sys/timeout.h
must be included.
Tested by me (i386, macppc, sparc64), ckuethe (amd64), & todd (sparc, zaurus).
ok dlg.
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