bash lacks the ksh93 optimization that makes sub-shells fast if they do
not alter io. bash 3.1-alpha1 introduced printf -v var_to_set which is not
as fast but is still significantly faster than var_to_set=$( printf ) when
using any version of bash. If we find our interpreter to somehow be bash
by invocation or inclusion, use the feature that provides fastest results.
"make kernels" is now shorthand for "make universe -DMAKE_JUST_KERNELS"
"make worlds" is now shorthand for "make universe -DMAKE_JUST_WORLDS"
The kernels target includes modules (unless you add -DNO_MODULES).
And of course you can still add all the other universe options, such as
"make kernels TARGETS=arm" to build kernels for all arm arches, or
TARGET_ARCH=armv6 to build all armv6 kernels, etc.
Reviewed by: imp
print until cncheckc returned a non -1, i.e. a character had been entered.
After this change it would print only if cncheckc returned a character.
As this was before each call to db_mach_vtrace the normal outcome was
nothing was printed.
With this change 'show ktr /a' will now keep printing until the user stops
the command with a key press, or there is no more entries to print.
Fix ixgbe reporting of flow control autoneg when running under DBG 1
Reviewed by: erj
MFC after: 2 days
Sponsored by: Multiplay
Differential Revision: https://reviews.freebsd.org/D5089
Setup phy and gbic power as per Linux 4.3.13 driver.
This fixes link not detected on X540-AT2 after booting to Linux which turns
the phy power off on detach.
Reviewed by: sbruno
MFC after: 2 days
Sponsored by: Multiplay
Differential Revision: https://reviews.freebsd.org/D5107
embedded structures out of a packed, unaligned struct into local copies
on the stack which are aligned.
The original patch to do this was submitted by Guy Yur <guyyur@gmail.com>,
and this is conceptually the same change, but restructured with the
#ifndef __NO_STRICT_ALIGNMENT wrapper, similar to how the same issue is
handled in the kernel pf code.
PR: 185617
PR: 206658
Builtins (including variable assignments without command word), function
calls and redirected compound commands need to restore file descriptors
to their original state after execution. This is handled by allocating a
redirtab structure. These mallocs and frees show up heavily in pmcstat.
Only allocate a redirtab if there are actually redirections and maintain a
count of how many levels of REDIR_PUSH there are without redirtabs.
A simple loop without external programs like
sh -c 'i=0; w=$(printf %0100d 7); while [ "$i" -lt 1000000 ]; do
i=$((i+1)); done'
is over 25% faster on an amd64 bhyve VM.
The linear search using strcmp() shows up in pmcstat for several percent.
Split the operators into lengths and whether they start with '-' and compare
bytes using == instead of strcmp().
A simple test
sh -c 'i=0; w=$(printf %0100d 7); while [ "$i" -lt 1000000 ]; do
v=$(printf %sx%s "$w" "$w"); i=$((i+1)); done'
is over 4% faster on an amd64 bhyve VM.
Some of the structures referenced in power.c (in particular
struct nvme_power_state) are missing from sbin/nvmecontrol/
Pointyhat to: imp
Reported by: Jenkins [*], O. Hartmann <ohartman@zedat.fu-berlin.de>, Outback Dingo <outbackdingo@gmail.com>
new addresses during restart. If this is not done, restart doesn't
work when the local socket is IPv4 only and the peer uses
IPv4 and IPv6 addresses.
MFC after: 3 days.
Add support for being able to boot off both UEFI and BIOS firmware,
ala the memstick trick.
Add support for writing to GPT volumes.
Move away from using bsd labels at all for these embedded stuff.
Minor tweaks to README.
spelled ${NANO_SLICE_ROOT}a and ${NANO_SLICE_ALTROOT}a respectively,
and that's the default value. This will allow nanobsd on systems
without a bsd label. That's rarely needed these days, even in an MBR
world. The default will shift to this in the future, but remain an
option.
time ago, but for some reason it was not. Basically, without this change
dlopen(3)'ing an empty .so file would just cause application to dump core
with SIGSEGV.
Make sure the file has enough data for at least the ELF header before
mmap'ing it.
Add a test case to check that dlopen an empty file return an error.
There were a separate discussion as to whether it should be SIGBUS
instead when you try to access region mapped from an empty file,
but it's definitely SIGSEGV now, so if anyone want to check that please
be my guest.
Reviewed by: mjg, cem
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D5112
Fix the inverted set of interrupts being used as the mask for ixl.
Without this ixl devices fail to detect link state changes.
Reviewed by: erj, sbruno
MFC after: 2 days
Sponsored by: Multiplay
There is no explanation why IPI ID is incremented here by "16".
This should have been removed in r285533 but somehow survived.
Reviewed by: wma
Obtained from: Semihalf
Sponsored by: Cavium
Differential Revision: https://reviews.freebsd.org/D5120
Change 294329 removed the ability to build ZFS pools that are backed by
zvols, because having that ability (even if it's not used) leads to
deadlocks. By popular demand, I'm adding an off-by-default sysctl to
reenable that ability.
Reviewed by: lidl, delphij
MFC after: Never
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D4998
This is the final step required allowing to compile and to run RISC-V
kernel and userland from HEAD.
RISC-V is a completely open ISA that is freely available to academia
and industry.
Thanks to all the people involved! Special thanks to Andrew Turner,
David Chisnall, Ed Maste, Konstantin Belousov, John Baldwin and
Arun Thomas for their help.
Thanks to Robert Watson for organizing this project.
This project sponsored by UK Higher Education Innovation Fund (HEIF5) and
DARPA CTSRD project at the University of Cambridge Computer Laboratory.
FreeBSD/RISC-V project home: https://wiki.freebsd.org/riscv
Reviewed by: andrew, emaste, kib
Relnotes: Yes
Sponsored by: DARPA, AFRL
Sponsored by: HEIF5
Differential Revision: https://reviews.freebsd.org/D4982
wraps sendmsg(2) and recvmsg(2) into batch send and receive operation.
The goal of this implementation is only to provide API compatibility
with Linux.
The cancellation behaviour of the functions is not quite right, but
due to relative rare use of cancellation it is considered acceptable
comparing with the complexity of the correct implementation. If
functions are reimplemented as syscalls, the fix would come almost
trivial. The direct use of the syscall trampolines instead of libc
wrappers for sendmsg(2) and recvmsg(2) is to avoid data loss on
cancellation.
Submitted by: Boris Astardzhiev <boris.astardzhiev@gmail.com>
Discussed with: jilles (cancellation behaviour)
MFC after: 1 month
Provide an easy to use framework for ARM64 DDB disassembler.
This commit does not contain full list of instruction opcodes.
Obtained from: Semihalf
Sponsored by: Cavium
Approved by: cognet (mentor)
Reviewed by: zbb, andrew, cognet
Differential revision: https://reviews.freebsd.org/D5114
