and vop_reclaim() methods. They seems to be unused, and the reported
situation is normal for the forced unmount.
MFC after: 1 week
X-MFC-note: keep prtactive symbol in vfs_subr.c
This way, when there is a dependency between two modules, the handler of the
latter probed runs first.
This is a similar approach as the modules are unloaded in the same
linkerfile.
Sponsored by: Sandvine Incorporated
Submitted by: Nima Misaghian <nmisaghian at sandvine dot com>
MFC after: 1 week
supported rather than 1. They are supposed to return a suitable value
for sysconf(3). While here, make the fsync sysctl match <unistd.h>.
MFC after: 1 week
pages. The pinning of NPGPTD pages is #if 0ed out in pmap_pinit (I'm
not quite sure why...) and this commit adds a corresponding #if 0 in
pmap_release to avoid unpinning those pages.
Some versions of Xen seem to silently ignore requests to unpin pages
which were never pinned in the first place, but some return an error
(causing FreeBSD to panic) prior to this commit.
These MSRs can be used to determine actual (average) performance as
compared to a maximum defined performance.
Availability of these MSRs is indicated by bit0 in CPUID.6.ECX on both
Intel and AMD processors.
MFC after: 5 days
It seems that this MSR has been available in a range of AMD processors
families for quite a while now.
Note1: not all AMD MSRs that are found in amd64 specialreg.h are also in
the i386 version.
Note2: perhaps some additional name component is needed to distinguish
AMD-specific MSRs.
MFC after: 5 days
backing storage. Such pages might be then reused, racing with the
assert in vm_object_page_collect_flush() that verified that dirty
pages from the run (most likely, pages with VM_PAGER_AGAIN status) are
write-protected still. In fact, the page indexes for the pages that
were removed from the object page list should be ignored by
vm_object_page_clean().
Return the length of successfully written run from vm_pageout_flush(),
that is, the count of pages between requested page and first page
after requested with status VM_PAGER_AGAIN. Supply the requested page
index in the array to vm_pageout_flush(). Use the returned run length
to forward the index of next page to clean in vm_object_page_clean().
Reported by: avg
Reviewed by: alc
MFC after: 1 week
xpmap_ptom(VM_PAGE_TO_PHYS(m)) == (pmap->pm_pdpt[i] & PG_FRAME)
for i = NPGPTD, since pmap->pm_pdpt[i] is only initialized for
0 <= i < NPGPTD.
This fixes an inevitable panic with XEN && PAE && INVARIANTS when
pmap_release is called (e.g., when /sbin/init is launched).
object page list. The only use of object generation count now is a
restart of the scan in vm_object_page_clean(), which makes sense to do
on the page addition. Page removals do not affect the dirtiness of the
object, as well as manipulations with the shadow chain.
Suggested and reviewed by: alc
MFC after: 1 week
virtual mode. In virtual mode we have to do memory mapping. On PowerMacs it is
usually false while on pSeries we have found that it is true. The real-mode?
property is not available on sparc64.
Approved by: nwhitehorn (mentor)
Retransmitted Packets
Zero Window Advertisements
Out of Order Receives
These statistics are available via the -T argument to
netstat(1).
MFC after: 2 weeks
insertion/stripping and it also supports TSO over VLAN. Implement
TSO over VLAN support for MCP55 controller.
While I'm here clean up SIOCSIFCAP ioctl handler. Since nfe(4)
sets ifp capabilities based on various hardware flags in device
attach, there is no need to check hardware flags again in
SIOCSIFCAP ioctl handler. Also fix a bug which toggled both TX and
RX checksum offloading even if user requested either TX or RX
checksum configuration change.
Tested by: Rob Farmer ( rfarmer <> predatorlabs dot net )
Consistently use the LLE_ prefix for lla_lookup() and the ND6_ prefix
for nd6_lookup() even though both are defined the same. Use the right
flag variable when checking each.
No real functional change.
MFC after: 4 days
and MmAllocateContiguousMemorySpecifyCache().
Those two functions take 64-bit variable(s) for their arguments. On i386
that takes additional 32-bit variable per argument. This is required so
that windrv_wrap() can correctly wrap function that miniport driver calls
with stdcall convention. Similar explanation is provided in subr_ndis.c for
other functions.
Submitted by: Paul B Mahol <onemda at gmail.com>
no noticeable change because we enable caches before we enter here for both
BSP and AP cases. Remove another pointless optimization for CR4.PGE bit
while I am here.
code but probably it only worked by chance because modifying CR4.PGE bit
causes invlidation of entire TLBs. Since these are very rare events, this
micro-optimization seems useless.
Reviewed by: jhb
kern_sendfile() uses vm_rdwr() to read-ahead blocks of data to populate
page cache. When sendfile stumbles upon a page that is not populated
yet, it sends out all the mbufs that it collected so far. This
resulted in very poor performance with ZFS when file data is not in the
page cache, because ZFS vop_read for UIO_NOCOPY case populated only
those pages that are already in cache, but not valid. Which means that
most of the time it populated only the first requested page in the
described above scenario.
Reported by: Alexander Zagrebin <alexz@visp.ru>
Tested by: Alexander Zagrebin <alexz@visp.ru>,
Artemiev Igor <ai@kliksys.ru>
MFC after: 12 days
Also, add a comment mentioning _PSD - on some systems it's enough to
put one logical CPU into a particular P-state to make other CPUs in
the same domain to enter that P-state.
Also, call sched_unbind() after the loop - sched_bind() automatically
rebinds from previous CPU to a new one, and the new arrangement of code
is safer against early loop exit.
Plus one minor style nit.
MFC after: 10 days
vnets to select their own default CC algorithm independent of each other and the
base system. If the base system or a vnet has set a default which gets unloaded,
we reset that netstack's default to NewReno.
Sponsored by: FreeBSD Foundation
Tested by: Mikolaj Golub <to.my.trociny at gmail com>
Reviewed by: bz (briefly)
MFC after: 3 months
is small, so there is no good reason not to declare the buffer at the top.
- Fix a whitespace nit.
Sponsored by: FreeBSD Foundation
MFC after: 11 weeks
X-MFC with: r215166
Any found to be using the algorithm that is about to go away are switched back
to NewReno to avoid leaving dangling pointers which would trigger a panic. For
VIMAGE kernels, there is a list per vnet to walk, yet the implementation was
only examining one of the vnet lists.
Fix the implementation of the above feature for VIMAGE kernels by looping
through all active TCP control blocks across all vnets.
Sponsored by: FreeBSD Foundation
Tested by: Mikolaj Golub <to.my.trociny at gmail com>
Reviewed by: bz (briefly)
MFC after: 11 weeks
runs on boot and each time a vnet jail is created. Running cc_init() multiple
times results in a panic when attempting to initialise the cc_list lock again,
and so r215166 effectively broke the use of vnet jails.
Switch to using a SYSINIT to run cc_init() on boot. CC algorithm modules loaded
on boot register in the same SI_SUB_PROTO_IFATTACHDOMAIN category as is used in
this patch, so cc_init() is run at SI_ORDER_FIRST to ensure the framework is
initialised before module registration is attempted.
Sponsored by: FreeBSD Foundation
Reported and tested by: Mikolaj Golub <to.my.trociny at gmail com>
MFC after: 11 weeks
X-MFC with: r215166
