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These files aren't USB-specific and were used by the previous
Bluetooth implementation, and will be used by the upcoming
HID-over-i2C implementation
ok deraadt
previous version ok kettenis and mpi
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there are two things shared between the network stack and drivers
in the send path: the send queue and the IFF_OACTIVE flag. the send
queue is now protected by a mutex. this diff makes the oactive
functionality mpsafe too.
IFF_OACTIVE is part of if_flags. there are two problems with that.
firstly, if_flags is a short and we dont have any MI atomic operations
to manipulate a short. secondly, while we could make the IFF_OACTIVE
operates mpsafe, all changes to other flags would have to be made
safe at the same time, otherwise a read-modify-write cycle on their
updates could clobber the oactive change.
instead, this moves the oactive mark into struct ifqueue and provides
an API for changing it. there's ifq_set_oactive, ifq_clr_oactive,
and ifq_is_oactive. these are modelled on ifsq_set_oactive,
ifsq_clr_oactive, and ifsq_is_oactive in dragonflybsd.
this diff includes changes to all the drivers manipulating IFF_OACTIVE
to now use the ifsq_{set,clr_is}_oactive API too.
ok kettenis@ mpi@ jmatthew@ deraadt@
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the code is refactored so the IFQ macros call newly implemented ifq
functions. the ifq code is split so each discipline (priq and hfsc
in our case) is an opaque set of operations that the common ifq
code can call. the common code does the locking, accounting (ifq_len
manipulation), and freeing of the mbuf if the disciplines enqueue
function rejects it. theyre kind of like bufqs in the block layer
with their fifo and nscan disciplines.
the new api also supports atomic switching of disciplines at runtime.
the hfsc setup in pf_ioctl.c has been tweaked to build a complete
hfsc_if structure which it attaches to the send queue in a single
operation, rather than attaching to the interface up front and
building up a list of queues.
the send queue is now mutexed, which raises the expectation that
packets can be enqueued or purged on one cpu while another cpu is
dequeueing them in a driver for transmission. a lot of drivers use
IFQ_POLL to peek at an mbuf and attempt to fit it on the ring before
committing to it with a later IFQ_DEQUEUE operation. if the mbuf
gets freed in between the POLL and DEQUEUE operations, fireworks
will ensue.
to avoid this, the ifq api introduces ifq_deq_begin, ifq_deq_rollback,
and ifq_deq_commit. ifq_deq_begin allows a driver to take the ifq
mutex and get a reference to the mbuf they wish to try and tx. if
there's space, they can ifq_deq_commit it to remove the mbuf and
release the mutex. if there's no space, ifq_deq_rollback simply
releases the mutex. this api was developed to make updating the
drivers using IFQ_POLL easy, instead of having to do significant
semantic changes to avoid POLL that we cannot test on all the
hardware.
the common code has been tested pretty hard, and all the driver
modifications are straightforward except for de(4). if that breaks
it can be dealt with later.
ok mpi@ jmatthew@
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followed by an isync.
ok mpi@
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From Richard Procter <richard DOT n DOT procter AT gmail DOT com>.
ok dlg@
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a.out world.
ok deraadt@ kettenis@
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as well. OK dlg@ mpi@
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OpenBSD partition when accessing the disklabel. For these files both
are '1', but this makes the usage consistent across all archs.
ok guenther@ miod@
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LABELOFFSET and MAXPARTITIONS. Easier on the eye when scanning
through all these files. No functional change.
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identical to the amd64 change already committed.
ok deraadt@
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faultbuf. But 1/ sr was only restored for machine check exceptions, and 2/ the
way it was saved was unsafe if interrupts were enabled, and could cause %r2
to be lost.
Discussing this with deraadt@ at the end of c2k15, this was probably needed
for the old VI boards which were the target of the original powerpc port,
came with a worse-than-Genesi openfirmware. Since then, machine check
exceptions have been unheard of; or, if they happen, they do not need the
status register to be restored.
ok mpi@ deraadt@
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kernels and we no longer have any.
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Note that pseudo-drivers not using if_input() are not affected by this
conversion.
ok mikeb@, kettenis@, claudio@, dlg@
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from tilo stritzky
thanks miod for help with the diff, and who also noted that
leading whitespace gets stripped too;
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miod pointed out that time_second should be compared to 1 not 0 in the
md resettodr() functions as it is initialised to 1.
ok miod@ deraadt@
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when no cable is plugged in but the interface is brough up.
inputs and ok kettenis@
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processors that support it.
Due to the way trap code is patched it is currently not possible to
enabled/disable BAT at runtime.
ok miod@, kettenis@
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ok miod@, kettenis@ as part of a larger diff
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ok dlg@, kettenis@
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ok guenther@
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- rename uiomove() to uiomovei() and update all its users.
- introduce uiomove(), which is similar to uiomovei() but with a size_t.
- rewrite uiomovei() as an uiomove() wrapper.
ok kettenis@
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not necessary, but consistent with other platforms. ok deraadt
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This brings bus_space_mmap(9) to socppc and change its bus_space_map(9)
implementation to use kernel_map instead of phys_map like macppc and
everybody else.
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ok kettenis@
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ok deraadt@
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make install
from Simon Nicolussi
ok jsing tedu
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This should catch all the same bad cases, but be a little less aggravating
in circumstances where a prototype isn't necessary
ok deraadt
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This changes the logic to prevent a recursion when processing soft
interrupts. Previously a per-CPU flag was set before re-enabling
interrupts. Now the IPL level is raised to SOFTTTY which makes
splsoftassert() happy, greatly inspired by mips64.
As a side effect, the ppc_intr_{disable,enable}() dance is now done
only once instead of twice per splx(9).
While here, make use of dosoftint() instead of having 3 different
functions for dispatching soft interrupts.
Tested by deraadt@ on G4 smp and by myself G5 smp, G3, G4 and socppc.
No objection from the usual (and over busy) suspects.
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that we delete ours, which isn't actually useful.
ok mpi sthen
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PROT_NONE, PROT_READ, PROT_WRITE, and PROT_EXEC from mman.h.
PROT_MASK is introduced as the one true way of extracting those bits.
Remove UVM_ADV_* wrapper, using the standard names.
ok doug guenther kettenis
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This is not necessary, as confirmed by tedu@ and kettenis@.
Solve the major contention problem seen on my Dual G5. Reduce the
build time of a kernel with two jobs from 5h+ to 18min and expose more
easily pmap/memroy corruptions 8)
ok kettenis@
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to cover the first 8 MB of memory such that it covers kernel .text and not
much else. This is a first step towards W^X in the kernel for machines
with G4 and older processors.
ok mpi@
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This makes it easier to remove components not required to do an install,
and subsequently add other desireable components ...
In snapshots (in various forks) for about a week.
Do some upgrades and installs, please.
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ok mpi
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