- Teach SCHED_4BSD to inform cpu_idle() about high sleep/wakeup rate to
choose optimized handler. In case of x86 it is MONITOR/MWAIT. Also it
will be needed to bypass forthcoming idle tick skipping logic to not
consume resources on events rescheduling when it won't give any benefits.
- Teach SCHED_4BSD to wake up idle CPUs without using IPI. In case of x86,
when MONITOR/MWAIT is active, it require just single memory write. This
doubles performance on some heavily switching test loads.
zack.kirsch at isilon.com for a race between nfsrv_freeopen()
and nfsrv_getlockfile() in the experimental NFS server that
he found during testing. Although nfsrv_freeopen() holds a
sleep lock on the lock file structure when called with
cansleep != 0, nfsrv_getlockfile() could still search the
list, once it acquired the NFSLOCKSTATE() mutex. I believe
that acquiring the mutex in nfsrv_freeopen() fixes the race.
MFC after: 2 weeks
that it works correctly for ZFS file handles. It is possible to
have two ZFS file handles that differ only in the bytes in the
fid_reserved field of the generic "struct fid" and comparing the
bytes in fid_data didn't catch this case. This patch changes the
macro to compare all bytes of "struct fid".
Tested by: gull at gull.us
MFC after: 2 weeks
Now when one does 'make kernel ; make kernel' the second invocation
only does: `kernel.ko' is up to date.
rather than reproduce all the .fw files and relink the kernel.
code associated with overflow or with the drain function. While this
function is not expected to be used often, it produces more information
in the form of an errno that sbuf_overflowed() did.
Bring in a driver for the LSI Logic MPT2 6Gb SAS controllers.
This driver supports basic I/O, and works with SAS and SATA drives and
expanders.
Basic error recovery works (i.e. timeouts and aborts) as well.
Integrated RAID isn't supported yet, and there are some known bugs.
So this isn't ready for production use, but is certainly ready for
testing and additional development. For the moment, new commits to this
driver should go into the FreeBSD Perforce repository first
(//depot/projects/mps/...) and then get merged into -current once
they've been vetted.
This has only been added to the amd64 GENERIC, since that is the only
architecture I have tested this driver with.
Submitted by: scottl
Discussed with: imp, gibbs, will
Sponsored by: Yahoo, Spectra Logic Corporation
This reflects actual type used to store and compare child device orders.
Change is mostly done via a Coccinelle (soon to be devel/coccinelle)
semantic patch.
Verified by LINT+modules kernel builds.
Followup to: r212213
MFC after: 10 days
malo and mwl use the firmware framework to access firmware images.
Depending on the firmware modules itself is not required and in this
case even wrong because no modules with those names exist.
Pointed out by: brucec
MFC after: 1 week
for interfaces with TSO enabled, otherwise one would see an extra
ICMP unreach, frag needed pre matching packet on lo0.
This syncs pf code to ip_output.c r162084.
PR: kern/144311
Submitted by: yongari via mlaier
Reviewed by: eri
Tested by: kib
MFC after: 8 days
Before the change it wasn't possible and the following error was printed:
ZFS: can only boot from disk, mirror or raidz vdevs
Now if the original vdev (the one we are replacing) is still present we will
read from it, but if it is not present we won't read from the new vdev, as it
might not have enough valid data yet.
MFC after: 2 weeks
handlers, some of which had to do awkward things to get a large enough
FIXEDLEN buffer.
Note that some sysctl handlers were explicitly outputting a trailing NUL
byte. This behaviour was preserved, though it should not be necessary.
Reviewed by: phk
PCI status register to map its current name.
- Use PCIM_* rather than PCIR_* for constants for fields in various AER
registers. I got about half of them right in the previous commit.
MFC after: 1 week
called when the sbuf internal buffer is filled. For kernel sbufs with a
drain, the internal buffer will never be expanded. For userland sbufs
with a drain, the internal buffer may still be expanded by
sbuf_[v]printf(3).
Sbufs now have three basic uses:
1) static string manipulation. Overflow is marked.
2) dynamic string manipulation. Overflow triggers string growth.
3) drained string manipulation. Overflow triggers draining.
In all cases the manipulation is 'safe' in that overflow is detected and
managed.
Reviewed by: phk (the previous version)
- Provide 64 bit implementations for some macros. On n64 and n32,
don't split 64 bit values.
- No need for 32 bit ops for control registers.
- Fix few bugs (write control reg, write_c0_register64).
- Re-write EIRR/EIMR/CPUID operations using read_c0_registerXX, no
need of inline assembly.
- rename control reg access functions to avoid phnx, update callers.
- stlye/whitespace fixes.
NFSv2,3 byte range locking is attempted. A fix that allows the
nlm_advlock() to work with both clients is in progress, but
may take a while. As such, I am doing this commit so that
the kernel doesn't panic in the meantime.
Submitted by: jh
MFC after: 2 weeks
in a range must be checked when calling pmap_remove(). Calling
pmap_remove() from vm_pageout_map_deactivate_pages() with the entire range
of the map could result in attempting to demap an extraordinary number
of pages (> 10^15), so iterate through each map entry and unmap each of
them individually.
MFC after: 6 weeks
K2 SATA controllers. The chip's status register must be read first, and
as a long, for other registers to be correctly updated after a command, and
this includes the command sequence in device detection as well as the
previously handled case after interrupts. While here, clean up some
previous hacks related to this controller.
Reported by: many
Reviewed by: mav
MFC after: 3 weeks
syscall and the same function, but are very different and share almost no code.
To make it easier to read and analyze, split vfs_domount() into
vfs_domount_first() and vfs_domount_update().
Reviewed by: kib
- Correct error paths. The system will be useless on devfs_fixup() failure, so
why bother? Maybe for the same reason why a dead body is washed and dressed
in a nice suit before it is put into a coffin? Maybe system's last will is to
panic without any locks held?
Reviewed by: kib
Seagate FreeAgent DockStar(tm) device. It seems to be a dumb down
version of Marvell SheevaPlug. Device tree source file could use
more tweaking, but at least it wll network boot and run FreeBSD/arm.
PCI-express. I used PCIZ_* for ID constants (plain capability IDs use
PCIY_*).
- Add register definitions for the Advanced Error Reporting, Virtual
Channels, and Device Serial Number extended capabilities.
- Teach pciconf -c to list extended as well as plain capabilities. Adds
more detailed parsing for AER, VC, and device serial numbers.
MFC after: 2 weeks
- Updates for the message ring clean up in r212321.
- Instead of dropping Tx packet on credit fail, retry send until it
succeeds.
- Fix freeing mbufs in case of P2P descriptors:
We cannot free the mbuf when the P2P descriptor freeback is received. The
mbuf may be still in use by the GMAC, since the P2P freeback indicates that
it read the P2D descriptors in the P2P message.
Now we free just the P2P descriptor when the P2P freeback message is
received. Another freeback P2D message has been added to the end of
the packet descriptors, the mbuf will be freed only when we received
this.
The P2P descriptor issue was reported by srgorti at netlogicmicro dot com.
are still bound to BSP. It confuses timer management logic in per-CPU mode
and may cause timer not being reloaded. Check such cases on interrupt
arival and reload timer to give system some more time to manage proper
binding.
wrong element of the VSID bitmap array to be examined after a collision,
leading to reallocation of in-use VSIDs under some circumstances, with
attendant memory corruption. Also add an assert to check for this kind of
problem in the future.
MFC after: 4 days
