This fixed panic where we hold mutex (process lock) and try to obtain sleepable
lock (vnode lock in expand_name()). The panic could occur when %I was used
in kern.corefile.
Additionally we avoid expand_name() overhead when coredumps are disabled.
Obtained from: WHEEL Systems
This fixes panic when listing sysctls on INVARIANTS-enabled kernel while
having wbwd loaded.
This panic was not fatal, at worst one additional space was printed.
Also sbuf_trim() makes some sense even if drain function is set. The drain
function is called only when buffer is to be expanded. So we could still trim
existing buffer before drain is called. In this case it worked just fine - the
trailing space was correctly trimmed.
Obtained from: WHEEL Systems
MFC after: 1 week
built with clang. When these are defined the lists are defined similar to:
asm(".section .ctors");
STATIC func_ptr __CTOR_LIST__[1] = { (func_ptr) (-1) };
asm(".section .dtors");
STATIC func_ptr __DTOR_LIST__[1] = { (func_ptr) (-1) };
The problem is clang will move the two arrays out of the .ctors and .dtors
sections causing these sections to contain a single null address. By not
defining these macros we use the version of the code that places the arrays
is their sections by using __attribute__((section(".ctors"))) and similar
for .dtors.
Submitted by: Daisuke Aoyama <aoyama AT peach.ne.jp>
For now use 256 buckets and fnv_hash function. Use xor'ed 32-bit
s6_addr32 parts of in6_addr structure as a hash key. Update
in6_localip and in6_is_addr_deprecated to use hash table for fastest
lookup.
Sponsored by: Yandex LLC
Discussed with: dwmalone, glebius, bz
of average duration, and total busy time instead of %.
This looks more useful when one runs `iostat -Ix` periodically to
collect statistics: e.g. now it is possible to calculate busy %
between two runs subtracting total busy times and dividing per time
period.
Average duration and % busy are still available via `iostat -x`.
set.
As the checks don't require vnet context, this is fixed by setting
vnet after the checks.
PR: kern/160541
Submitted by: Nikos Vassiliadis (slightly different approach)
implement the BSM audit trail format. Rename the kernel versions of the
files to match the userspace filenames so that it's easier to work out
what they correspond to, and therefore ensure they are kept in-sync.
Obtained from: TrustedBSD Project
included various upstreamed patches from the FreeBSD base to make OpenBSM
compile more easily with bmake, higher warning levels, clang, and several
other loose ends.
Obtained from: TrustedBSD Project
yields, specify the user priority for the yield. Otherwise, a
higher-priority (kernel) thread could fall into the priority-inversion
with the thread owning the mutex lock.
On single-processor machines or UP kernels, do not loop adaptively
when the next vnode cannot be locked, instead yield unconditionally.
Restructure the iteration initializer and the iterator to remove code
duplication. Put the code to fetch and lock a vnode next to the
current marker, into the mnt_vnode_next_active() function, and use it
instead of repeating the loop.
Reported by: hrs, rmacklem
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
was being copied from the wrong place. This patch fixes that.
This could cause access failures for mapped users, when the group
permissions were needed.
PR: 147998
Submitted by: Christopher Key (cjk32 at cam.ac.uk)
MFC after: 2 weeks
provide dump directory. Eliminate this redundant argument. This changes
the usage, but the only risk here is that a warning will be printed
about directory given as device.
- Update usage of -C option.
- When clearing dump header from the given device there is also no need to
provide dump directory, although additional arguments for -c were not
documented.
- Document that -v can be used with -c and that list of devices can be given.
Obtained from: WHEEL Systems
If virtio_setup_intr() failed during boot, we would hang in
taskqueue_free() -> taskqueue_terminate() for all the taskq
threads to terminate. This will never happen since the
scheduler is not running by this point.
Reported by: neel, grehan
Approved by: grehan (mentor)
random order instead of creation order.
Eliminates needless filesystem renames caused by removed parent snapshots
which subsequently causes many more errors.
PR: kern/172259
Submitted by: Steven Hartland
Reviewed by: pjd (mentor)
Approved by: pjd (mentor)
MFC after: 2 weeks
Rather than trying to KASSERT for callers that invoke this on
IO tags, either do nothing (for write_8) or return ~0 (for read_8).
Using KASSERT here just makes bus.h too messy from both
polluting bus.h with systm.h (for any number of drivers that include
bus.h without first including systm.h) or ports that use bus.h
directly (i.e. libpciaccess) as reported by zeising@.
Also don't try to implement all of the other bus_space functions for
8 byte access since realistically only these two are needed for some
devices that expose 64-bit memory-mapped registers.
Put the amd64-specific functions here rather than sys/amd64/include/bus.h
so that we can keep this header unified for x86, as requested by mdf@
and tijl@.
Submitted by: Carl Delsey <carl.r.delsey@intel.com>
MFC after: 3 days
initialisation to be enabled (1) / disabled (0) defaults to enabled.
This is useful for devices which have a slow trim speed and are either
new or have otherwise already been wiped e.g. secure erase.
PR: kern/173116
Submitted by: Steven Hartland
Approved by: pjd (mentor)
making range consolidation much more effective particularly for small
deletes.
This reduces memory used by the free map as well as reducing the number
of bio requests down to geom required to process all deletes.
In tests this achieved a factor of 10 reduction of trim ranges / geom
call downs.
While I'm here correct the description of zio_vdev_io_start.
PR: kern/173254
Submitted by: Steven Hartland
Approved by: pjd (mentor)
date: 2009/03/31 01:21:29; author: dlg; state: Exp; lines: +9 -16
...
this also firms up some of the input parsing so it handles short frames a
bit better.
This actually fixes reading beyond mbuf data area in pfsync_input(), that
may happen at certain pfsync datagrams.
