- If possible, context switch to the thread directly in sched_ithd(),
rather than triggering a delayed ast reschedule.
- Disable interrupts while restoring fpu state in the trap handler,
in order to ensure that we are not preempted in the middle, which
could cause migration to another cpu.
Reviewed by: peter
Tested by: peter (alpha)
* Optimise the return path for syscalls so that they only restore a minimal
set of registers instead of performing a full exception_return.
A new flag in the trapframe indicates that the frame only holds partial
state. When it is necessary to perform a full state restore (e.g. after an
execve or signal), the flag is cleared to force a full restore.
Turn off semaphores. Nobody else implements them, and there is lots of
AML out there which does totally absurd things with them, meaning that
if we try to do the right thing we are guaranteed to fail.
Use acpi_EvaluateInteger where possible.
Use FuncName rather than &FuncName when passing function addresses.
Don't evaluate the _REG method when we attach to an address space -
AcpiInstallAddressSpaceHandler does it for us.
acpi_EvaluateInteger.
Use acpi_EvaluateInteger instead of doing things the hard way where
possible.
AcpiSetSystemSleepState (unofficial) becomes AcpiEnterSleepState.
Use the AcpiGbl_FADT pointer rather than searching for the FADT.
to 1GB. A box of mine is running with MAXDSIZ and DFLDSIZ increased
up to 1.5GB.
Wishlist: It would be nice to warn if MAXTSIZ + MAXDSIZ + MAXSSIZ
exceeds VM_MAXUSER_ADDRESS - VM_MINUSER_ADDRESS.
(e.g. ethernet nodes are persistent until you rip out the hardware)
Use this support in the ethernet and sample nodes.
Add some more abstraction on the 'item's so that node and
hook reference counting can be checked easier.
Slight man page correction.
Make pppoe type dependent on ethernet type.
Clean up node shutdown a little.
Move a mutex from MTX_SPIN to MTX_DEF (oops)
Fix small ref-counting bug.
remove warning on one2many type.
incompletely converting simplelocks to mutexes (COM_LOCK() is supposed
to hide the SMP locking internals, but it now depends on mutex interfaces
being visible).
filesystem softdep_process_worklist() is called in a loop until it indicates
that no dependancies remain, but the determination of that fact depends on
there only being one softdep_process_worklist() instance running. It was
possible for the syncer to also be running softdep_process_worklist()
and the pre-existing checks in the code to prevent this were not sufficient
to prevent the race. This patch solves the problem.
Approved-by: mckusick
- Add a note about the special locking semantics used for members such as
p_cred that are read by multiple processes but only written to by the
current process.
- Change p_upages_obj's locking key to note that it is created at fork
and left alone afterwards (the actual pointer, not what it points to.)
- Mark p_intr_nesting_level as being implicitly locked since only curproc
accesses it.
Reviewed by: jake
valid) if BPF is missing.
The netgraph_bpf node forced bpf to be present, reflect that in the
options.
Stop doing a 'count bpf' - we provide stubs.
Since a handful of drivers still refer to "bpf.h", provide a more accurate
indication that the API is present always. (eg: netinet6)
With this flag set malloc() will panic if memory allocation failed.
This usable only in critical places where failed allocation is fatal.
Reviewed by: peter
would *want* to is a different story, but it used to be able to be done
statically. Get rid of #include "loop.h" and struct ifnet loif[NLOOP];
This could be used as an example of how to do this in other drivers,
for example: ccd.
fsyncs, which typically occur during unmounting, will drain all dirty
buffers even if it takes multiple passes to do so. The guarentee was
mangled by the last patch which solved a problem due to -current disabling
interrupts while holding giant (which caused an infinite spin loop waiting for
I/O to complete). -stable does not have either patch, but has a similar
bug in the original spec_fsync() code which is triggered by a bug in the
softupdates umount code, a fix for which will be committed to -current
as soon as Kirk stamps it. Then both solutions will be MFC'd to -stable.
-stable currently suffers from a combination of the softupdates bug and
a small window of opportunity in the original spec_fsync() code, and -stable
also suffers from the spin-loop bug but since interrupts are enabled the
spin resolves itself in a few milliseconds.
folks.
My guess is that reducing the number of tags is just masking the real
problem for the PR submitter. I'll re-open the PR and see if I can work
with the submitter to diagnose the problem.
PR: 21139
machines (duh!). This was one reason why this script broke on
i386. The other being that on i386 sections did not have the
proper alignment. This has been fixed in sys/sys/linker_set.h.
declarations will not be aligned by default.
o Remove the alignment work-around for alpha. Our current alpha
as(1) does not assume alignment after section switching, nor
does the ia64 as(1).
- When used on a 33MHz PCI BUS, the 53C1010-66 revision 0
requires extra clocks to be inserted in data out phase.
Revision 1 is fixed.
- The 53C1010-33 revision 1 requires internal cycles to be
disabled due to possible contentions on IO registers.
Revision 2 is fixed.
Fix:
- The probing of HVD from GPIO3 bit by the driver was reversed.
The driver could misprobe the bus mode of a 825 or 875 chip
that was not previously initialized (no BIOS for example).
The new method is 'flood' (in addition to the old round-robin)
in which incoming packets are sent to more than one outgoing hook.
(I'm not sure what Rogier is using this for but it seems generally useful
and isn't much extra)
Submitted by: Rogier R. Mulhuijzen (drwilco@drwilco.net )
o Use objdump instead of gensetdefs(1) to build the linker sets.
o Allow overriding of nm and objdump in resp. genassym.sh and
gensetdefs.pl for non-native toolchains.
Reviewed by: arch
Perl improvements: Jos Backus <josb@cncdsl.com>, benno
problem is that a mutex lock, prior to this change, is acquired before
the curproc is set to idleproc, so we mess ourselves up by calling
the mutex lock routine with curproc == NULL.
Moving it up after the aps_ready spin-wait has us hopefully setting it
after idleproc is setup.
Solved by: jake (the allmighty) :-)
Move the helper macros from sbuf.h to sbuf.c
Use ints instead of size_ts.
Relax the requirements for sbuf_finish(): it is now possible to finish an
overflowed buffer.
Make sbuf_len() return -1 instead of 0 if the sbuf overflowed.
Requested by: gibbs
while strlcpy() existed, before it got backed out due to an extended
bikeshed argument. Sigh. Back to the old version with the redundant
code to terminate the string. :-(
is going away soon anyways. Instead, don't pass MTX_RECURSE to mtx_init,
so that WITNESS will panic if the driver mutex is recursed on.
- Use MTX_DEF in mtx_init() instead of assuming that it will be 0.
even if mode PS/2 is forced with bootflags. As a matter of fact,
chipsets needs some extra configuration for accessing PS/2 mode
from ECP. The current patch is only relevant for generic chipsets
since specific code is supposed to deal with this during detection.
instead of a trapframe directly. (Requested by bde.)
- Convert the alpha switch_trampoline to call fork_exit() and use the MI
fork_return() instead of child_return().
- Axe child_return().
- Proc locking in a few places.
- faultin() now must be called with the proc lock held.
- Split up swappable() into a couple of tests so that it can be locke in
swapout_procs().
- Use queue macros.
- Update stopevent() to assert that the proc lock is held when it is
held and is not recursed. Note that the STOPEVENT() macro obtains
the proc lock when calling this function.
