operate on the resource (we have no local resources to manage); this
fixes drivers that alloc/release resources in their probe method and
then do it again in attach
o while here add some prints to catch failures and massage style a bit
hit in the name cache. cache_lookup() doesn't actually return ENOENT
for such requests to force the filesystem to do an explicit lookup, so
this was effectively dead code.
- Grab the nfsnode mutex while writing to n_dmtime. We don't grab the lock
when comparing the time against the cached directory mod time (just as
we don't when comparing ctime's for +ve name cache hits) since the
attribute caching is already racy for NFS clients as it is.
Discussed with: bde
in6p_ip6_nxt
in6p_vflag
in6p_flags
in6p_socket
in6p_lport
in6p_fport
in6p_ppcb
Remove unused v6 macro aliases for inpcb flags:
IN6P_HIGHPORT
IN6P_LOWPORT
IN6P_ANONPORT
IN6P_RECVIF
IN6P_MTUDISC
IN6P_FAITH
IN6P_CONTROLOPTS
References to in6p_lport and in6_fport in sockstat are also replaced with
normal inp_lport and inp_fport references.
MFC after: 3 days
Reviewed by: bz
o encode need for A4 bus space tag hackery according to the memory
address; checking for "uart" breaks down with the GPS chip support
which is also a uart but does not require the same hackery
o encode the correct memory window instead of carving up all of i/o
space, potentially with a larger window than a device should have;
this likely should be handled in the drivers by using a proper bus
alloc call but since some drivers depend on the bus support to figure
this out we cannot simply mod them
o add optional GPS and RS485 support (conditionally as the support
isn't ready yet)
needed.
- Move the release of the sysctl sx lock after the vsunlock() in
userland_sysctl() to restore the original memlock behavior of
minimizing the amount of memory wired to handle sysctl requests.
MFC after: 1 week
This tool creates large numbers of TCP connections, each of which will
transmit a fixed amount of data, between client and server hosts. tcpp can
use multiple workers (typically up to the number of hardware cores), and can
use multiple source IPs in order to use an expanded port/IP 4-tuple space to
avoid problems from reusing 4-tuples too quickly. Aggregate bandwidth use
will be reported after a client run.
While by no means a perfect tool, it has proven quite useful in generating
and optimizing TCP stack lock contention by easily generating high-intensity
workloads. It also proves surprisingly good at finding device driver bugs.
implementation instead. The bypass does not assume that returned vnode
is only held.
Reported by: Paul B. Mahol <onemda gmail com>, pluknet <pluknet gmail com>
Reviewed by: jhb
Tested by: pho, pluknet <pluknet gmail com>
consumers which fork after the shared pages have been setup. pflogd(8)
is an example. The problem is understood and there is a fix coming in
shortly.
Folks who want to continue using it can do so by setting
net.bpf.zerocopy_enable
to 1.
Discussed with: rwatson
the PORTEN and MEMEN bits in the command register than to zero the
bars.
Use pci_write_ivar directly instead of a one-line wrapper that adds no
value.
Track verbosity changes in pci.
Remove a stray blank line.
record-only mergeinfo because an automated merge is confused by the
flattening that took place:
Move install to install-sh to prevent name-clashes.
MFC after: 3 days
After I imported libteken into the source tree, I noticed syscons didn't
store the cursor position inside the terminal emulator, but inside the
virtual terminal stat. This is not very useful, because when you
implement more complex forms of line wrapping, you need to keep track of
more state than just the cursor position.
Because the kernel messages didn't share the same terminal emulator as
ttyv0, this caused a lot of strange things, like kernel messages being
misplaced and a missing notification to resize the terminal emulator for
kernel messages never to be resized when using vidcontrol.
This patch just removes kernel_console_ts and adds a special parameter
to te_puts to determine whether messages should be printed using regular
colors or the ones for kernel messages.
Reported by: ache
Tested by: nyan, garga (older version)
colliding upper case letters as the lower case letter with a '_' in
front.
MFC after: 3 days
Discussed with: ed
Spotted by: Michael David Crawford <mdc at prgmr.com>
table pages. Now, all accesses to user-space page table pages are
performed through the direct map. (The recursive mapping is only used
to access kernel-space page table pages.)
Eliminate the TLB invalidation on the recursive mapping when a user-space
page table page is removed from the page table and when a user-space
superpage is demoted.
We should just leave the underlying TTY objects alone when scrolling
around in KDB. It should be handled by Syscons exclusively.
Reported by: pluknet gmail com
address space sizes to be longs instead of ints. Specifically, the follow
values are now longs: runningbufspace, bufspace, maxbufspace,
bufmallocspace, maxbufmallocspace, lobufspace, hibufspace, lorunningspace,
hirunningspace, maxswzone, maxbcache, and maxpipekva. Previously, a
relatively small number (~ 44000) of buffers set in kern.nbuf would result
in integer overflows resulting either in hangs or bogus values of
hidirtybuffers and lodirtybuffers. Now one has to overflow a long to see
such problems. There was a check for a nbuf setting that would cause
overflows in the auto-tuning of nbuf. I've changed it to always check and
cap nbuf but warn if a user-supplied tunable would cause overflow.
Note that this changes the ABI of several sysctls that are used by things
like top(1), etc., so any MFC would probably require a some gross shims
to allow for that.
MFC after: 1 month
debug.hashstat.rawnchash sysctl in particular as taking 7 milliseconds on
a 3GHz Intel Xeon (4x2) running 7.1. It accounted for almost a quarter of
the total runtime of 'sysctl -a'. It also performs lots of copyout's while
holding the namecache lock (this does not attempt to fix that).
MFC after: 2 weeks
IPv4 stack.
Diffs are minimized against p4.
PCS has been used for some protocol verification, more widespread
testing of recorded sources in Group-and-Source queries is needed.
sizeof(struct igmpstat) has changed.
__FreeBSD_version is bumped to 800070.
in make.conf or src.conf.
- When GPT is enabled (which it is by default), use memory above 1 MB and
leave the memory from the end of the bss to the end of the 640k window
purely for the stack. The loader has grown and now it is much more
common for the heap and stack to grow into each other when both are
located in the 640k window.
PR: kern/129526
MFC after: 1 week
