tdq_runq_add to select the runq rather than hoping we set it properly
when we adjusted the priority. This involves the same number of
branches as before so should perform identically without the extra
fragility.
Tested by: bz
Reviewed by: bz
the cpufreq drivers to reliably use properties of PCI devices for quirks,
etc.
- For the legacy drivers, add CPU devices via an identify routine in the
CPU driver itself rather than in the legacy driver's attach routine.
- Add CPU devices after Host-PCI bridges in the acpi bus driver.
- Change the ichss(4) driver to use pci_find_bsf() to locate the ICH and
check its device ID rather than having a bogus PCI attachment that only
checked for the ID in probe and always failed. As a side effect, you
can now kldload ichss after boot.
- Fix the ichss(4) driver to use the correct device_t for the ICH (and not
for ichss0) when doing PCI config space operations to enable SpeedStep.
MFC after: 2 weeks
Reviewed by: njl, Andriy Gapon avg of icyb.net.ua
present in cpu_feature2. Also, use CPUID2_EST rather than a magic
number.
- Don't free the ACPI settings list in detach if we are going to fail the
request. Otherwise an attempt to kldunload est would free the array
but the driver would keep trying to use it.
MFC after: 1 week
routines (V86 requests from the client and hardware interrupt handlers):
- Install trampoline real mode interrupt handlers at IDT vectors 0x20-0x2f
to handle hardware interrupts by invoking the appropriate vector (0x8-0xf
or 0x70-0x78). This allows the 8259As to use vectors 0x20-0x2f in real
mode as well as protected mode will ensuring that the master 8259A
doesn't share IDT space with CPU exceptions in protected mode.
- Since we don't need to reserve space for page tables and a page directory
anymore since dropping paging support, move the TSS and protected mode
IDT up by 16k. Grow the ring 1 link stack by 16k as a result.
- Repurpose the ring 1 link stack to be used as a real mode stack when
invoking real mode routines either via a V86 request or a hardware
interrupts. This simplifies a few things as we avoid disturbing the
original user stack.
- Add some more block comments to explain how the code interacts with the
V86 structure as this wasn't immediately obvious from the prior comments
(e.g. that we explicitly copy the seg regs for real mode out of the V86
struct onto the stack to be popped off when going into real mode, etc.).
Also, document some of the stack frames we create going to real mode and
back.
- Remove all of the virtual 86 related code including having to simulate
various instructions and BIOS calls on a trap from virtual 86 mode.
- Explicitly panic if a user client attempts to perform a V86 CALL
request that isn't a far call.
- Bump version to 1.2.
Assuming this works ok this should fix some of the long standing issues
with USB booting as well as etherboot.
MFC after: 2 weeks
Submitted by: kib (some parts from his original real mode patch)
- Only calculate timeshare priorities once per tick or when a thread is woken
from sleeping.
- Keep the ts_runq pointer valid after all priority changes.
- Call tdq_runq_add() directly from sched_switch() without passing in via
tdq_add(). We don't need to adjust loads or runqs anymore.
- Sort tdq and ts_sched according to utilization to improve cache behavior.
Sponsored by: Nokia
- Normalize the preemption/ipi setting code by introducing sched_shouldpreempt()
so the logical is identical and not repeated between tdq_notify() and
sched_setpreempt().
- In tdq_notify() don't set NEEDRESCHED as we may not actually own the thread lock
this could have caused us to lose td_flags settings.
- Garbage collect some tunables that are no longer relevant.
Quoth the man-page:
Fifologs provide a compact round-robin circular storage for recording
text and binary information to permanent storage in a bounded and pre-
dictable fashion, time and space wise.
Not yet connected to the build, but feel free to test & review.
the NOPs used are 0x01.
While we could simply pad with EOLs (which are 0x00), rather use an
explicit 0x00 constant there to not confuse poeple with 'EOL padding'.
Put in a comment saying just that.
Problem discussed on: src-committers with andre, silby, dwhite as
follow up to the rev. 1.161 commit of tcp_var.h.
MFC after: 11 days
- Allow realpath to accept multiple paths on the command line.
- Add -q to suppress warnings if some paths can't be processed, and use
getopt(3) to process flags.
- Print the path being requested rather than a possibly partially
processed path when a failure occurs so that you can tell which of
several passed paths did fail.
MFC after: 1 week
PR: 112920
Submitted by: Ighighi <ighighi@gmail.com>
- Add -v to print file names as they are processed; -vv prints the flags
change as well.
- Add -f to ignore failures with the same semantics as chflags(1), neither
printing an error nor affecting the return code.
- Don't try to set the flags if they won't change.
I made minor cosmetic tweaks to the code in the patch.
MFC after: 1 week
PR: 112827
Submitted by: Ighighi <ighighi at gmail.com>
the appropriate bit in the DEVACTB register.
This change allows the C2 state on those systems to work as expected.
Reviewed by: njl
Submitted by: Andriy Gapon <avg at icyb.net.ua>
MFC after: 1 week
target file after the timestamp has been set; otherwise setting the
timestamp will fail if the flags don't permit it (i.e., uchg).
MFC after: 1 week
PR: 120208
Submitted by: Ighighi <ighighi at gmail.com>
Specifically, since the delete-behind heuristic is never applied to a
device-backed object, there is no point in checking whether each of the
object's pages is fictitious. (Only device-backed objects have
fictitious pages.)
know if has siblings that need an actual probe. Introduce a specail
return value called BUS_PROBE_NOOWILDCARD. If the driver returns
this, the probe is only successful for devices that have had a
specific devclass set for them.
Reviewed by: current@, jhb@, grehan@
in*() and out*() primitives should not be used, other than by
ISA drivers. In this case they were used for memory-mapped I/O
and were not even used in the spirit of the primitives.
if netgraph reported error while delivering to destination.
Reset 'next send' counter to the last requested by peer on ack timeout
to resend all subsequest packets after lost one again without additional hints.
Solaris and AIX.
fcntl(fd, F_DUP2FD, arg) and dup2(fd, arg) are functionnaly equivalent.
Document it.
Add some regression tests (identical to the dup2(2) regression tests).
PR: 120233
Submitted by: Jukka Ukkonen
Approved by: rwaston (mentor)
MFC after: 1 month
