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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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a new etype, UVM_ET_HOLE, meaning it has no backend.
UVM_ET_HOLE entries (which should be created as UVM_PROT_NONE and with
UVM_FLAG_NOMERGE and UVM_FLAG_HOLE) are skipped in uvm_unmap_remove(), so
that pmap_{k,}remove() is not called on the entry.
This is intended to save time, and behave better, on pmaps with MMU holes
at process exit time.
ok art@, kettenis@ provided feedback as well.
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gets correctly encrypted if the swap isn't a multiple of 128 pages.
ok deraadt@
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ifdef netbsd block in drm code, but oga@ says he'll remove
it soon...
OK art@, oga@;
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uvm_swap_initcrypt. The number of available pages may not match, if we
are using a miniroot in the swap partition.
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through signal handlers with gdb.
ok miod@
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memory map is fragmented. Avoids ridiculously large core dumps.
ok miod@
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Proper casts should be added to all invocations of ptoa() before this cast
can be removed again.
ok toby@, marco@, miod@
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Has been in snapshots for a short while.
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returning EINVAL, you'll get ENOSYS. No serious code has used this system
call in at least fifteen years.
The libc stub will be removed at the next major crank time.
ok henning@ deraadt@ krw@ toby@
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and supposed to be only used from within ddb.
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macros that just expand into the mutex functions
to keep the abstraction, do assorted cleanup.
ok miod@,art@
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where core dumps on hppa were missing the last stack page.
ok miod@
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fixed size array which size should match any buf; if a bogus buf is passed
to this function, the kernel will KASSERT instead of potentially running out
of stack and having an undefined behaviour.
ok deraadt@
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ok krw@
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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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vnode locking actually works, just check the VLOCKSWORK
flag. Also, change this ifdef DEBUG to VFSDEBUG since
VLOCKSWORK is only ever set if VFSDEBUG is defined.
ok/input miod@, art@ (earlier diff)
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help and ok miod@ thib@
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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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eyeballed and ok dlg@
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version for i386
more architectures and ctob() replacement is being worked on
prodded by and ok miod
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some comment cleanup and a touch of KNF.
ok art@
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when we hit swap before actually fully populating the buffer cache which
would lead to deadlocks.
From pedro, tested by many, deraadt@ ok
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ckuethe@ for a while. Okay beck@, "it is good timing" deraadt@.
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"reads ok" dlg@
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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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to size. tested on almost all machines, double checked by miod and krw
next comes the type handling surrounding these values
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ok art bob
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simple_{lock/unlock}.
ok art@
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ok art@
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Pick reasonble names for the locks involved..
ok tedu@, art@
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deraadt@ dlg@.
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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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to be page aligned and can contain more "noise".
From mickey art@ ok
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is aligned just fine and in case we allocate the last piece of the
address space we don't want wrap-around to cause us to fail.
pointed out by and ok miod@
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miod@ ok
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(I'm reading code, that's where this comes from).
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