set the NFSCLFLAGS_RECVRINPROG while doing recovery from an expired
lease in a manner similar to r206818 for server reboot recovery.
This will prevent the function that acquires stateids for I/O
operations from acquiring out of date stateids during recovery.
Also, fix up mutex locking on the nfsc_flags field.
MFC after: 1 week
When performing a smp_rendezvous() or more likely, on amd64 and i386,
a smp_tlb_shootdown() the caller will end up with the smp_ipi_mtx
spinlock held, busy-waiting for other CPUs to acknowledge the operation.
As long as CPUs are suspended (via cpu_reset()) between the active mask
read and IPI sending there can be a deadlock where the caller will wait
forever for a dead CPU to acknowledge the operation.
Please note that on CPU0 that is going to be someway heavier because of
the spinlocks being disabled earlier than quitting the machine.
Fix this bug by calling cpu_reset() with the smp_ipi_mtx held.
Note that it is very likely that a saner offline/online CPUs mechanism
will help heavilly in fixing similar cases as it is likely more bugs
of this type may arise in the future.
Reported by: rwatson
Discussed with: jhb
Tested by: rnoland, Giovanni Trematerra
<giovanni dot trematerra at gmail dot com>
MFC: 2 weeks
Special deciation to: anyone who made possible to have 16-ways machines
in Netperf
- Properly initialize and destroy system_taskq.
- Add a dummy implementation of taskq_create_proc().
Note: We do not currently use system_taskq in ZFS so this is mostly a
no-op at this time. Proper system_taskq initialization is required
by newer ZFS code.
Ok'ed by: pjd
MFC after: 2 weeks
o) Use <machine/asm.h> macros for register-width, etc., rather than doing it
by hand in a few more assembly files.
o) Reduce diffs between various bits of TLB refill code in exception.S and
between interrupt processing code.
o) Use PTR_* to operate on registers that are pointers (e.g. sp).
o) Add and use a macro, CLEAR_PTE_SWBITS rather than using the
mysteriously-named WIRED_SHIFT to select bits to truncate when loading PTEs.
o) Don't doubly disable interrupts by moving zero to the status register,
especially since that has the nasty side-effect of taking us out of 64-bit
mode.
o) Use CLEAR_STATUS to disable interrupts the first time.
o) Keep SR_PX set as well as SR_[KSU]X when doing exception processing. This
is the bit that determines whether 64-bit operations are allowed.
o) Don't enable interrupts until configure_final(), like most other ports.
attributes for XKPHYS.
o) Make coprocessor 0 accessor function macros for register+selector registers
take the full name so that e.g. (as done in this commit), prid selector 1
can be written through mips_wr_ebase() rather than mips_wr_prid1().
o) Allow for sign extension of 32-bit segment addresses.
o) Remove an unused MIPS-I register number.
address space for an address as aligned by the new pmap_align_tlb()
function, which is for constraints imposed by the TLB. [1]
o) Add a kmem_alloc_nofault_space() function, which acts like
kmem_alloc_nofault() but allows the caller to specify which find-space
option to use. [1]
o) Use kmem_alloc_nofault_space() with VMFS_TLB_ALIGNED_SPACE to allocate the
kernel stack address on MIPS. [1]
o) Make pmap_align_tlb() on MIPS align addresses so that they do not start on
an odd boundary within the TLB, so that they are suitable for insertion as
wired entries and do not have to share a TLB entry with another mapping,
assuming they are appropriately-sized.
o) Eliminate md_realstack now that the kstack will be appropriately-aligned on
MIPS.
o) Increase the number of guard pages to 2 so that we retain the proper
alignment of the kstack address.
Reviewed by: [1] alc
X-MFC-after: Making sure alc has not come up with a better interface.
when an NFSv4 server reboots, by doing two things.
1 - Make the function that acquires a stateid for I/O operations
block until recovery is complete, so that it doesn't acquire
out of date stateids.
2 - Only allow a recovery once every 1/2 of a lease duration, since
the NFSv4 server must provide a recovery grace period of at
least a lease duration. This should avoid recoveries caused
by an out of date stateid that was acquired for an I/O op.
just before a recovery cycle started.
MFC after: 1 week
that page only makes sense if the advice is MADV_WILLNEED. In that case,
the intention is to activate the page, so discouraging the page daemon
from reclaiming the page makes sense. In contrast, in the other cases,
MADV_DONTNEED and MADV_FREE, it makes no sense whatsoever to discourage
the page daemon from reclaiming the page by setting PG_REFERENCED.
Wrap a nearby line.
Discussed with: kib
MFC after: 3 weeks
sleeping on that page is nonsensical. Doing so reduces the likelihood
that the page daemon will reclaim the page before the thread waiting in
vm_object_backing_scan() is reawakened. However, it does not guarantee
that the page is not reclaimed, so vm_object_backing_scan() restarts
after reawakening. More importantly, this muddles the meaning of
PG_REFERENCED. There is no reason to believe that the caller of
vm_object_backing_scan() is going to use (i.e., access) the contents of
the page. There is especially no reason to believe that an access is
more likely because vm_object_backing_scan() had to sleep on the page.
Discussed with: kib
MFC after: 3 weeks
either redundant or harmful, depending on the caller. For example, when
called by vm_fault(), it is redundant. However, when called by
vm_thread_swapin(), it is harmful. Specifically, if the thread is later
swapped out, having PG_REFERENCED set on its stack pages leads the page
daemon to reactivate these stack pages and delay their reclamation.
Reviewed by: kib
MFC after: 3 weeks
o) Mask off PAGE_MASK bits in pmap_update_page, etc., rather than modifying the
badvaddr in trapframe. Some nearby interfaces already did this.
o) Make PTEs "unsigned int" for now, not "unsigned long" -- we are only ready
for them to be 32-bit on 64-bit platforms.
o) Rather than using pmap_segmap and calculating the offset into the page table
by hand in trap.c, use pmap_pte().
o) Remove unused quad_syscall variable in trap.c.
o) Log things for illegal instructions like we do for bad page faults.
o) Various cast cleanups related to how to print registers.
o) When logging page faults, show the page table information not just for the
program counter, but for the fault address.
o) Modify support.S to use ABI-neutral macros for operating on pointers.
o) Consistently use CALLFRAME_SIZ rather than STAND_FRAME_SIZE, etc.
o) Remove unused insque/remque functions.
o) Remove some coprocessor 0 accessor functions implemented in assembly that
are unused and have inline assembly counterparts.
o) Remove NBPG, PGOFSET and PGSHIFT. Use the standard names.
o) Remove some unused macros and move things from param.h to vmparam.h that
belong in the latter. (Actually, all of the kernel segment values, virtual
addresses, etc., belong in one place, but this is a step in the right
direction.)
same time.
o) Remove some unused trivial uart functions from octeon_machdep now that the
uart part is fully working and they are unused.
o) Use __func__ instead of __FUNCTION__.
o) Use intr_*() instead of other routines that do the same thing.
o) Remove some duplicate printfs from the Octeon port, as well as duplicate
setting of Maxmem.
o) Use the right frequency divider on Octeon.
o) Use PCPU_GET(cpuid) consistently to get the cpuid of the running core.
o) Remove some unused macros in the Octeon port.
o) Use mips_sync() around use of the global dpcpu, whose value may not be
visible to APs at first.
o) When loading the first thread's stack, use macros to make the code correct
for n64 as well.
o) Remove stub, do-nothing FAU init/enable/disable functions from the RGMX
driver.
that turned out to be unrelated, and the rest was, as pointed out by Neel,
just wrong-headed.
o) Tweak mem.c to fix use of /dev/kmem for direct-mapped addresses.
ones implemented using assembly.
o) Use TRAPF_USERMODE() consistently rather than USERMODE(). Eliminate
<machine/psl.h> as a result.
o) Use intr_*() rather than *intr(), consistently.
o) Use register_t instead of u_int in some trap code.
o) Merge some more endian-related macros to machine/asm.h from NetBSD.
o) Add PTR_LI macro, which loads an address with the correct sign-extension for
a pointer.
o) Restore interrupts when bailing out due to an excessive IRQ in
nexus_setup_intr().
o) Remove unused functions from psraccess.S.
o) Enter temporary virtual entries for large memory access into the page tables
rather than simply hoping they stay resident in the TLB and we don't need to
do a refill for them.
o) Abstract out large memory mapping setup/teardown using some macros.
o) Do mips_dcache_wbinv_range() when using temporary virtual addresses just
like we do when we can use the direct map.
sparc64.
o) Use uiomove_fromphys rather than the broken fpage mechanism for /dev/mem.
o) Update sf_buf allocator to not share buffers and to do a pmap_qremove when
done with an sf_buf so as to better track valid mappings.
bit.
o) Remove some unused inlines.
o) Generate CP0 access functions for 64-bit TLB registers when building for
n64.
o) Add an inline function version of the COP0_SYNC macro.
no flowid is present, this was causing some bad
reordering, now just use 0.
Also, add a few watchdog bits, and tx handler bits
that were corrected in igb.
for opens done locally in the client when a delegation for the file
was held. This could cause the client to crash in crsetgroups() when
recovering from a server crash/reboot. This patch fills in the
recovery credentials for this case, in order to avoid the client crash.
Also, add KASSERT()s to the credential copy functions, to catch any
other cases where the credentials aren't filled in correctly.
MFC after: 1 week
- Re-probe xfp / sfp+ socket on link events, in case user
has changed transceiver
- correctly report current media to avoid confusing lagg (reported by Panasas)
- Report link speed (submitted by yongari)
Reviewed by: yongari (earlier version)
MFC after: 7 days
Previsouly this condition was reported with EIO by bio_offset > mediasize
check.
Perhaps that check should be extended to bio_offset+bio_length > mediasize.
MFC after: 1 week
d_mediasize
CD_FLAG_VALID_TOC is not required for setting those media properties.
PR: kern/145385
Submitted by: Juergen Lock <nox@jelal.kn-bremen.de>
a slightly different version
Tested by: Pavel Sukhoy <sukhoy@ripn.net>,
Markus Wild <m.wild@cybernet.ch>,
Juergen Lock <nox@jelal.kn-bremen.de>,
uqs
MFC after: 1 week
interface considers that it hits a fatal error, and will not copyout
the request structure back for _IOW and _IOWR ioctls, keeping them
untouched.
The previous implementation of the SIOCGIFDESCR ioctl intends to
feed the buffer length back to userland. However, if we return
an error, the feedback would be defeated and ifconfig(8) would
trap into an infinite loop.
This commit changes SIOCGIFDESCR to set buffer field to NULL to
indicate the previous ENAMETOOLONG case.
Reported by: bschmidt
MFC after: 2 weeks
disable alq, it acts as if alq had not been enabled in the build.
in other words, the rest of ktr is still available for use.
If you really don't want that as well, set the mask to 0.
MFC after:3 weeks
it from machine/in_cksum.h. This definition prevents us from using
hand-tuned assembler versions of in_cksum.
# this fixes the modules build on arm for ipfilter.
This driver was written by Alexander Pohoyda and greatly enhanced
by Nikolay Denev. I don't have these hardwares but this driver was
tested by Nikolay Denev and xclin.
Because SiS didn't release data sheet for this controller, programming
information came from Linux driver and OpenSolaris. Unlike other open
source driver for SiS190/191, sge(4) takes full advantage of TX/RX
checksum offloading and does not require additional copy operation in
RX handler.
The controller seems to have advanced offloading features like VLAN
hardware tag insertion/stripping, TCP segmentation offload(TSO) as
well as jumbo frame support but these features are not available
yet. Special thanks to xclin <xclin<> cs dot nctu dot edu dot tw>
who sent fix for receiving VLAN oversized frames.
unneeded for legacy hardware.
Also remove some TSO related cruft.
Add some watchdog_time setting that was missing, thanks
to Mikolaj Golub for pointing that out.
subsequently in pmap_pinit() with the following signature:
panic: lock "pmap" 0xc7878bc8 already initialized
This bug was uncovered by the changes made to vm_map.c in r206140.
This causes a panic in vm_thread_dispose() when it tries to add this kstack
to the kstack cache. This happens only when 'td_kstack' is not (PAGE_SIZE * 2)
bytes aligned and we have unmapped the page at that address in cpu_thread_alloc.
Pointed out by: nwhitehorn@
The sequence number is used as the name of a sysctl node,
under which we add the MCA records using the CPU id as the
leaf name.
Add the hw.mca.inject sysctl to provide a way to inject
MC errors and trigger machine checks.
PR: ia64/113102
useful it will be, but we really need to be keying off something other
than MACHINE for this anyway since on arm and mips we have lots of
these running around (one for each SoC family)...
instead of causing erratic behavior. Currently make_dev(9) can't fail, so
there is no way to report an error to make_dev(9) callers.
- Disallow using "." and ".." in device path names. It didn't work previously
but now it is reported rather than panicing.
- Treat multiple sequential slashes as single in device path names.
Discussed with: pjd
about inacessible or wrong mcontext, and for dreaded "kernel trap with
interrupts disabled" situation. The later is changed when trap is
generated from user mode (shall never be ?).
Normalize the messages to include both pid and thread name.
MFC after: 1 week
DTYPE_VNODE.
Only acquire locks for O_EXLOCK/O_SHLOCK if file type is still vnode,
since we allow for fcntl(2) to process with advisory locks for
DTYPE_VNODE only. Another reason is that all fo_close() routines need to
check and release locks otherwise.
For O_TRUNC, call fo_truncate() instead of truncating the vnode.
Discussed with: rwatson
MFC after: 2 week
in a device independent manner. Also include an example anticipatory
scheduler, gsched_rr, which gives very nice performance improvements
in presence of competing random access patterns.
This is joint work with Fabio Checconi, developed last year
and presented at BSDCan 2009. You can find details in the
README file or at
http://info.iet.unipi.it/~luigi/geom_sched/
