This saves a few seconds in a parallel build since we can build the
gtest_main and gmock subdirectories in parallel.
Reviewed By: ngie
Differential Revision: https://reviews.freebsd.org/D26760
Currently the googletest internal tests build after the matching library.
However, each of these is serialized at the top level makefile.
Additionally some of the tests (e.g. the gmock-matches-test) take up to
90 seconds to build with clang -O2. Having to wait for this test to
complete before continuing to the next directory seriously slows down the
parllelism of a -j32 build.
Before this change running `make -C lib/googletest -j32 -s` in buildenv
took 202 seconds, now it's 153 due to improved parallelism.
Reviewed By: emaste (no objection)
Differential Revision: https://reviews.freebsd.org/D26748
If lower VOP relocked the lower vnode, it is possible that nullfs
vnode was reclaimed meantime. In this case nullfs vnode no longer
shares lock with lower vnode, which breaks locking protocol.
Check for the condition and acquire nullfs vnode lock if detected.
Reported and tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
It is a common pattern for filesystems' VOP_INACTIVE() implementation
to forcibly reclaim the vnode when its state is final. For instance,
UFS vnode with zero link count is removed, and since it is
inactivated, the last open reference on it is dropped.
On the other hand, vnode might get spurious usecount reference for
many reasons. If the spurious reference exists while vgonel() checks
for active state of the vnode, it would recurse into VOP_INACTIVE().
Fix it by checking and not doing inactivation when vgone() was called
from inactive VOP.
Reported and tested by: pho
Discussed with: mjg
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
During tinderbox and similar workloads negative entries get at least one
hit before they get evicted. In the current scheme this avoidably promotes
them.
Be conservative and stick to 2 hits for now.
The TF_TOE flag is the check used in the rest of the network stack to
determine if TOE is active on a socket. There is at least one path in
the cxgbe(4) TOE driver that can leave the tod pointer non-NULL on a
socket not using TOE.
Reported by: Sony Arpita Das <sonyarpitad@chelsio.com>
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D26803
Only one MIPS-specific driver implements support for one of the
asymmetric operations. There are no in-kernel users besides
/dev/crypto. The only known user of the /dev/crypto interface was the
engine in OpenSSL releases before 1.1.0. 1.1.0 includes a rewritten
engine that does not use the asymmetric operations due to lack of
documentation.
Reviewed by: cem, markj
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D26810
Pad the icmp6stat structure so that we can add more counters in the
future without breaking compatibility again, last done in r358620.
Annotate the rarely executed error paths with __predict_false while
here.
Reviewed by: bz, melifaro
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D26578
This will cause the VM to back sufficiently large .text sections, such
as those in zfs.ko or amdgpu.ko on amd64, with superpage mappings when
possible.
Reviewed by: alc, kib
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26802
When a reserve of free items is configured for a zone, the reserve must
not be reclaimed under memory pressure. Modify keg_drain() to simply
respect the reserved pool.
While here remove an always-false uk_freef == NULL check (kegs that
shouldn't be drained should set _NOFREE instead), and make sure that the
keg_drain() KTR statement does not reference an uninitialized variable.
Reviewed by: alc, rlibby
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26772
zone_import() fetches a free or partially free slab from the keg and
then uses its items to populate an array, typically filling a bucket.
If a single allocation causes the keg to drop below its minimum reserve,
the inner loop ends. However, if the bucket is still not full and
M_USE_RESERVE is specified, the outer loop will continue to fetch items
from the keg.
If M_USE_RESERVE is specified and the number of free items is below the
reserved limit, we should return only a single item. Otherwise, if the
bucket size is larger than the reserve, all of the reserved items may
end up in a single per-CPU bucket, invisible to other CPUs.
Reviewed by: rlibby
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26771
BT_MAXALLOC (4) is the number of boundary tags required to complete an
allocation in the worst case: two to clip a free segment, and two to
import from a parent arena. vmem_xalloc() preallocates four boundary
tags before attempting a search to simplify the segment allocation code.
It implements a loop that:
1) ensures that BT_MAXALLOC boundary tags are available,
2) attempts to find and clip a free segment satisfying the allocation
constraints, and failing that,
3) attempts to import a segment.
On !UMA_MD_SMALL_ALLOC platforms the btag zone has to handle recusion:
it needs boundary tags to allocate boundary tags. Thus we reserve
2 * BT_MAXALLOC * mp_ncpus tags for use when recursing: the factor of 2
is because there are two layers of vmem arenas, the per-domain arena and
global arena. For a single thread, 2 * BT_MAXALLOC tags should be
sufficient.
Because of the way the loop is structured, BT_MAXALLOC tags are not
sufficient. The first bt_fill() call may allocate BT_MAXALLOC tags,
then import a segment (consuming two tags), then attempt to top up the
preallocation before carving into the imported free segment, thus
requiring up to six tags in the worst case. Because we don't
preallocate that many, this bug can cause deadlocks in rare scenarios.
Fix the problem by moving the preallocation out the loop. This assumes
that only a single import is ever required to satisfy an allocation
request.
Thanks to manu, emaste and lwhsu for helping test debug patches.
Reported by: Jenkins (hardware CI lab)
Reviewed by: alc, kib, rlibby
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26770
Rewrite the code that maintains pm_active and invalidates EPTP-tagged
TLB entries in C. Previously this work was done in vmx_enter_guest(),
in assembly, but there is no good reason for that and it makes the TLB
invalidation algorithm for nested page tables harder to review.
No functional change intended. Now, an error from the invept
instruction results in a kernel panic rather than a vmexit. Such errors
should occur only as a result of VMM bugs.
Reviewed by: grehan, kib
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26830
This allows the interrupt controller driver only need a small change to
create a map for the page the device will write to raise an interrupt.
Submitted by: andrew
Reviewed by: kib
Sponsored by: Innovate DSbD
Differential Revision: https://reviews.freebsd.org/D26705
In the functions that copy between userspace and kernel space we check the
user space address is valid before performing the copy. These are mostly
identical within each type of function so create two macros to perform the
check.
Obtained from: CheriBSD
Sponsored by: Innovate UK
efivar_unix_path_to_device_path returns the error code, it does not set errno.
Reviewed by: imp
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D26852
Not that you can regenerate the motd by editing motd.template and
running 'service motd restart' rather than rebooting.
Small wordsmithing by me, and updated the example from FreeBSD 2.1.6.1
release to 12.1 release.
Submitted by: Dan Mack
While toying around with lua bindings for libbe(3), I discovered that I
apparently never documented this, despite having documented
be_is_auto_snapshot_name that references it.
MFC after: 1 week
libbe will never need to mutate these as we either process them into a local
buffer or we just don't touch them and write to a separate out argument.
MFC after: 1 week
This directory doesn't exist and causes gcc-6.4 to complain about
a non-existent include directory
Approved by: kevans, imp
Differential Revision: https://reviews.freebsd.org/D26846
Factor out the priv(9) checks into OS specifc code so other OSes can equally
implement them. This sorts out those XXX in the net80211 code.
We provide 3 arguments (cmd, vap, ifp) where available to the functions, in
order to allow other OSes to use that data but also in case we'd add auditing
to these check to have the information available. For now the arguments are
marked __unused.
PR: 249403
Reported by: martin(NetBSD)
Reviewed by: adrian, martin(NetBSD)
MFC after: 10 days
Sponsored by: Rubicon Communications, LLC (d/b/a "Netgate")
Differential Revision: https://reviews.freebsd.org/D26541
It turns out that the majority of the test time for the mkimg tests isn't
mkimg itself but rather the use of jot and hexdump which can be quite slow
on emulated platforms such as QEMU.
On QEMU-RISC-V this reduces the time for `kyua test mkimg_test` from 655
seconds to 200. And for CheriBSD on QEMU-CHERI this saves 4-5 hours (25%
of the time for the entire testsuite!) since jot ends up triggering slow
functions inside the QEMU emulation a lot.
Reviewed By: lwhsu
Differential Revision: https://reviews.freebsd.org/D26796
When compiling this for mips32 on gcc-6.x, we'd hit issues where we
don't have 64 bit atomics on mips32.
gcc implements this using libatomic, which we don't currently include
in our freebsd-gcc compiler packages.
So for now add this work around so mips32 works. It's also fine for
mips64. We can fix this later once we get libatomic included.
Approved by: dim
Differential Revision: https://reviews.freebsd.org/D26774
connections over multiple paths.
Multipath routing relies on mbuf flowid data for both transit
and outbound traffic. Current code fills mbuf flowid from inp_flowid
for connection-oriented sockets. However, inp_flowid is currently
not calculated for outbound connections.
This change creates simple hashing functions and starts calculating hashes
for TCP,UDP/UDP-Lite and raw IP if multipath routes are present in the
system.
Reviewed by: glebius (previous version),ae
Differential Revision: https://reviews.freebsd.org/D26523
another thread has started to send in a CCB and already checked
the queue wasn't frozen, we would end up with iscsi_action()
being called despite the queue is now frozen.
Add a check to make sure this doesn't happen . Perhaps this should
be fixed at the CAM level instead, but given how the send queue and
SIM are governed by two separate mutexes, it is somewhat hard to do.
Reviewed by: imp, mav
MFC after: 2 weeks
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D26750
The former clobbers some registers that shouldn't be touched.
Reviewed by: kib (earlier version)
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26406
Turns out the dummy rlimits fix prlimit(1), but break su(8)
(login-1:4.5-1ubuntu2) - although not sudo(8), for some reason.
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26814
Implement two macros IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_IS_160MHZ()
and its 80+80 counter part to check in vhtcaps for appropriate
levels of support and use the macros throughout the code.
Add vht160_chan_ranges/is_vht160_valid_freq and handle analogue
to vht80 in various parts of the code.
Add ieee80211_add_channel_cbw() which also takes the CBW flag
fields and make the former ieee80211_add_channel() a wrapper to it.
With the CBW flags we can add HT/VHT channels passing them to
getflags() for the 2/5ghz functions.
In ifconfig(8) add the regdomain_addchans() support for VHT160
and VHT80P80.
With this (+ regdoain.xml updates) VHT160 channels can be
configured, listed, and pass regdomain where appropriate.
Tested with: iwlwifi
Reviewed by: adrian
MFC after: 10 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26712
Add a show sysinit command to ddb (similar to show vnet_sysinit) which
proved to be helpful to debug some ordering issues on early-mid kernel
start panics.
The previous scheme only looked at negative entry count in relation to the
total count, leading to tons of spurious evictions if the cache is not
significantly populated.
Instead, only try the above if negative entry count goes beyond namecache
capacity.
As was done for L3 PTEs in r362853, mask out the reserved bits when
extracting the physical address from an L2 PTE. Future versions of the
spec or custom implementations may make use of these reserved bits, in
which case the resulting physical address could be incorrect.
Submitted by: Nathaniel Filardo <nwf20@cl.cam.ac.uk>
Reviewed by: kp, mhorne
Differential Revision: https://reviews.freebsd.org/D26607
Split everything into neg, debug, param and stat categories.
The legacy nchstats sysctl (queried e.g., by systat) remains untouched.
While here rename some vars to be easier on the eye.
