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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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independent executables using the uvm_map_pie() function to
randomize the load address. okay miod@, kettenis@, drahn@
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All cpus are stopped and this cpu blocks all interrupts. It doesn't make
sense to grab locks that ddb can then jump past with longjmp.
Noticed by Pierre Riteau. I just forgot about the bug until reminded
today.
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in something other than clock ticks. From art@'s punchlist and (for
the time being) not yet used.
"you're doing it wrong" art@,ray@,otto@,tedu@
ok art@
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ok art@
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only when they are needed. Makes locations like -123d45m,-123d45m fit.
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discussed with otto, sthen, ckuethe. ok otto
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ok art@
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as dumpsys() will now clear the sensitive information.
ok djm@ (and dumpsys changes too)
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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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extended DOS partition. the concept of extended partitions is very
simple, it is just another mbr at the partition offset (well, the
standard "EBR" is a linked list with a few limitations, but this diff
works with both variants).
this diff has been in the snapshots for a while.
with input from weingart@ and krw@
ok deraadt@
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conversions that should shave a few bytes off the kernel.
ok henning, krw, jsing, oga, miod, and thib (``even though i usually prefer
FOO|BAR''; thanks for looking.
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In brelse, if we end up in the B_INVAL case without mappings, check
for B_WANTED and wake up the sleeper if there's one before freeing the
buffer. This shouldn't happen, but it looks like there might actually
be some dodgy corner cases in nfs where this could just happen if the
phase of the moon is right and the wind is blowing from the right
direction.
thib@ ok
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with biomem and art has no idea how it got there.
ok art@ thib@
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Ok reyk@, "kill kill kill" thib@
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ok blambert@
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marker; found the hard way by sturm@
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ok art
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ok thib beck art
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end. Makes static linux binaries run again.
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with sensors with the same name. The sensor name is now ever increasing
unless the reference count drops to zero, in which case the naming restarts
at zero as well.
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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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header inbound. on the outbound side, we take that and look for the key
that is the exact opposite, and store that mapping in the state key. on
subsequent packets we don't have to do the lookup on outbound any more.
almost unable to get real benchmarks going here, we know for sure this
gives a more than 5% increase in forwarding performance.
many thanks to ckuethe for stress- and performance-testing.
ok ryan theo
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I hate it, art@
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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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provided by christian ehrhardt (Christian_Ehrhardt@genua.de) and micky,
thanks!
ok deraadt millert
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1) remove multiple size queues, introduced as a stopgap.
2) decouple pages containing data from their mappings
3) only keep buffers mapped when they actually have to be mapped
(right now, this is when buffers are B_BUSY)
4) New functions to make a buffer busy, and release the busy flag
(buf_acquire and buf_release)
5) Move high/low water marks and statistics counters into a structure
6) Add a sysctl to retrieve buffer cache statistics
Tested in several variants and beat upon by bob and art for a year. run
accidentally on henning's nfs server for a few months...
ok deraadt@, krw@, art@ - who promises to be around to deal with any fallout
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the superuser. access(2) will now only indicate success for X_OK on
non-directories if there is at least one execute bit set on the file.
OK deraadt@ thib@ otto@
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ok deraadt@
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already have on in sched.h
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ok deraadt@
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ok deraadt@ millert@
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fixing (status) ^T support on some ttys without carrier
ok pyr
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get hung in nfs_reconnect() because they do not have the proper
privilages to bind to a socket, by adding a struct proc * argument
to sobind() (and the *_usrreq() routines, and finally in{6}_pcbbind)
and do the sobind() with proc0 in nfs_connect.
OK markus@, blambert@.
"go ahead" deraadt@.
Fixes an issue reported by bernd@ (Tested by bernd@).
Fixes PR5135 too.
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'fakerootdev' hackery. This allows us to bring back miod@'s r1.70 subr_disk.c
change to avoid the GENERIC dance when rootdev has been initialized. This
in turn re-enables raidframe root devices.
Add a nice panic if rootdev can't be initialized, displaying the name of the
device that didn't work rather than just blowing up by de-referencing NULL.
ok deraadt@
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after pool_get();
ok beck@
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From: Pierre Riteau pierre.riteau_att_gmail.com
OK miod@
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instead of handrolling...
ok miod@
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as they where called consecutively in vfs_init.
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and shuffle declerations around.
OK blambert@
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for pool_sethardlimit.
prodded by and ok tedu@
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free things when exiting a threaded proc. from philip guenther
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The option allows a socket to be bound to addresses which are not
local to the machine. In order to receive packets for these addresses
SO_BINDANY needs to be combined with matching outgoing pf(4) divert
rules, see pf.conf(5).
ok beck@
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with eopnotsupp() instead;
ok blambert@
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do appropriate cleanup;
OK deraadt@
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ok fgsch
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and the one route with the lowest number wins. This will be used by the
routing daemons to resolve the synchronisations issue in case of conflicts.
The nasty bits of this are in the multipath code. If no priority is specified
the kernel will choose an appropriate priority.
Looked at by a few people at n2k8 code is much older
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