There have been several mentions on our mailing lists about missing
atomic functions in our system libraries (e.g. __atomic_load_8 and
friends), and recently I saw __bswapdi2 and __bswapsi2 mentioned too.
To address this, add implementations for the functions from compiler-rt
to the system compiler support libraries, e.g. libcompiler_rt.a and and
libgcc_s.so.
This also needs a small fixup in compiler-rt's atomic.c, to ensure that
32-bit mips can build correctly.
Bump __FreeBSD_version to make it easier for port maintainers to detect
when these functions were added.
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D26159
The primary benefit is maintaining a completely shared
code base with the community allowing FreeBSD to receive
new features sooner and with less effort.
I would advise against doing 'zpool upgrade'
or creating indispensable pools using new
features until this change has had a month+
to soak.
Work on merging FreeBSD support in to what was
at the time "ZFS on Linux" began in August 2018.
I first publicly proposed transitioning FreeBSD
to (new) OpenZFS on December 18th, 2018. FreeBSD
support in OpenZFS was finally completed in December
2019. A CFT for downstreaming OpenZFS support in
to FreeBSD was first issued on July 8th. All issues
that were reported have been addressed or, for
a couple of less critical matters there are
pull requests in progress with OpenZFS. iXsystems
has tested and dogfooded extensively internally.
The TrueNAS 12 release is based on OpenZFS with
some additional features that have not yet made
it upstream.
Improvements include:
project quotas, encrypted datasets,
allocation classes, vectorized raidz,
vectorized checksums, various command line
improvements, zstd compression.
Thanks to those who have helped along the way:
Ryan Moeller, Allan Jude, Zack Welch, and many
others.
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D25872
r358097 introduced a problem for i386, where kernel builds will intermittently
get hung, typically with many processes sleeping on "btalloc".
I know nothing about VM, but received assistance from rlibby@ and markj@.
rlibby@ stated the following:
It looks like the problem is that
for systems that do not have UMA_MD_SMALL_ALLOC, we do
uma_zone_set_allocf(vmem_bt_zone, vmem_bt_alloc);
but we haven't set an appropriate free function. This is probably why
UMA_ZONE_NOFREE was originally there. When NOFREE was removed, it was
appropriate for systems with uma_small_alloc.
So by default we get page_free as our free function. That calls
kmem_free, which calls vmem_free ... but we do our allocs with
vmem_xalloc. I'm not positive, but I think the problem is that in
effect we vmem_xalloc -> vmem_free, not vmem_xfree.
Three possible fixes:
1: The one you tested, but this is not best for systems with
uma_small_alloc.
2: Pass UMA_ZONE_NOFREE conditional on UMA_MD_SMALL_ALLOC.
3: Actually provide an appropriate vmem_bt_free function.
I think we should just do option 2 with a comment, it's simple and it's
what we used to do. I'm not sure how much benefit we would see from
option 3, but it's more work.
This patch implements #2. I haven't done a comment, since I don't know
what the problem is.
markj@ noted the following:
I think the suggested patch is ok, but not for the reason stated.
On platforms without a direct map the problem is:
to allocate btags we need a slab,
and to allocate a slab we need to map a page, and to map a page we need
to allocate btags.
We handle this recursion using a custom slab allocator which specifies
M_USE_RESERVE, allowing it to dip into a reserve of free btags.
Because the returned slab can be used to keep the reserve populated,
this ensures that there are always enough free btags available to
handle the recursion.
UMA_ZONE_NOFREE ensures that we never reclaim free slabs from the zone.
However, when it was removed, an apparent bug in UMA was exposed:
keg_drain() ignores the reservation set by uma_zone_reserve()
in vmem_startup().
So under memory pressure we reclaim the free btags that are needed to
break the recursion.
That's why adding _NOFREE back fixes the problem: it disables the
reclamation.
We could perhaps fix it more cleverly, by modifying keg_drain() to always
leave uk_reserve slabs available.
markj@'s initial patch failed testing, so committing this patch was agreed
upon as the interim solution.
Either rlibby@ or markj@ might choose to add a comment to it.
PR: 248008
Reviewed by: rlibby, markj
Update the deprecation message in the drm2 (aka legacy drm) drivers to point
towards the graphics/drm-kmod ports for all architectures, not just amd64.
drm-kmod has support for more architectures these days, and the
graphics/drm-legacy-kmod port is being deprecated.
Approved by: imp
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D26174
Move special va_list handling to kmp_os.h
Instead of copying and pasting the same #ifdef expressions in
multiple places, define a type and a pair of macros in kmp_os.h, to
handle whether va_list is pointer-like or not:
* kmp_va_list is the type to use for __kmp_fork_call()
* kmp_va_deref() dereferences a va_list, if necessary
* kmp_va_addr_of() takes the address of a va_list, if necessary
Also add FreeBSD to the list of OSes that has a non pointer-like
va_list. This can now be easily extended to other OSes too.
Reviewed By: AndreyChurbanov
Differential Revision: https://reviews.llvm.org/D86397
This should enable building of LLVM's OpenMP on AArch64. Addition to
share/mk will follow in a subsequent commit.
PR: 248864
MFC after: 2 weeks
rtentry lock traditionally served 2 purposed: first was protecting refcounts,
the second was assuring consistent field access/changes.
Since route nexthop introduction, the need for the former disappeared and
the need for the latter reduced.
To be more precise, the following rte field are mutable:
rt_nhop (nexthop pointer, updated with RIB_WLOCK, passed in rib_cmd_info)
rte_flags (only RTF_HOST and RTF_UP, where RTF_UP gets changed at rte removal)
rt_weight (relative weight, updated with RIB_WLOCK, passed in rib_cmd_info)
rt_expire (time when rte deletion is scheduled, updated with RIB_WLOCK)
rt_chain (deletion chain pointer, updated with RIB_WLOCK)
All of them are updated under RIB_WLOCK, so the only remaining concern is the reading.
rt_nhop and rt_weight (addressed in this review) are read under rib lock and
stored in the rib_cmd_info, so the caller has no problem with consitency.
rte_flags is currently read unlocked in rtsock reporting (however the scope
is only RTF_UP flag, which is pretty static).
rt_expire is currently read unlocked in rtsock reporting.
rt_chain accesses are safe, as this is only used at route deletion.
rt_expire and rte_flags reads will be dealt in a separate reviews soon.
Differential Revision: https://reviews.freebsd.org/D26162
We have both a system of 'kern' and of 'kernel'. Prefer the latter and
convert this notification to use 'kernel' instead of 'kern'. As a
transition period, continue to also generate the 'kern' notification
until sometime after FreeBSD 13 is branched.
MFC After: 3 days
Add small example section showing general use and -d and -h flags
Approved by: manpages (bcr@)
Differential Revision: https://reviews.freebsd.org/D26172
That mode is useful to call gstat from other app, however kinda useless
since gstat won't exit and stay running forever when its parent process
has long gone.
MFC after: 2 weeks
Although I can't reproduce it, others are seeing different lex/yacc
programs always regenerated after my change to copy rather than
symlink the files. The reported fix is to add '-p' to the copies.
Since it doesn't hurt, go head and add it, though the reasons for
this mattering remain at best obscure and poorly articulated.
Assume ELF images without OSREL use the new auxv format.
This is specially important for rtld, that is not tagged. Using
direct exec mode with new (ELFv2) binaries that expect the new auxv
format would result in crashes otherwise.
Unfortunately, this may break direct exec'ing old binaries,
but it seems better to correctly support new binaries by default,
considering the transition to ELFv2 happened quite some time
ago. If needed, a sysctl may be added to allow old auxv format to
be used when OSREL is not found.
Reviewed by: bdragon
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D25651
For ieee80211_add_channel+*() we are passing in an int flag for
ht40 and in some cases another int flag for vht80 where we'd only
need two bits really.
Convert these variables to a bitflag and fold them together into one.
This also allows for VHT160 and VHT80P80 and whatever may come to
be considered. Define the various options currently needed.
Change the drivers (rtwn and rsu) which actually set this bit to non-0.
For convenience the "1" currently used for HT40 is preserved.
Enahnce getflags_5ghz() to handle the full set of VHT flags based
on the input flags from the the driver.
Update the regdomain implementation as well to make use of the new
flags and deal with higher [V]HT bandwidths.
ieee80211_add_channel() specifically did not take flags so it will
not support naything beyond 20Mhz channels.
Note: I am not entirely happy with the "cbw_flag[s]" name, but we
do use chan_flags elsewhere already.
MFC after: 2 weeks
Reviewed by: adrian, gnn
Sponsored by: Rubicon Communications, LLC (d/b/a "Netgate")
Differential revision: https://reviews.freebsd.org/D26091
The semantic of the pidx argument of isc_rxd_flush() is the
last valid index of in the free list, rather than the next
index to be published. However, netmap was still using the
old convention. While there, also refactor the netmap_fl_refill()
to simplify a little bit and add an assertion.
MFC after: 2 weeks
Without this change the buildworld/buildkernel epilogue looks like this:
>>> World built in 249 seconds, sysctl: cannot stat /proc/sys/hw/ncpu: No such file or directory
ncpu: , make -j72.
Reviewed By: emaste, bdrewery
Differential Revision: https://reviews.freebsd.org/D26056
This is a change in preparation for stopping to use lorder.sh (D26044) and
instead assume that we have a linker newer than ~1990. Without lorder.sh
duplicates end up being passed to the linker when building .so files and this
can result in duplicate symbol definition errors.
There is one minor change: libcompiler_rt.a will no longer provide
gcc_personality_v0 and instead we now only have it in libgcc_eh.a/libgcc_s.so.
This matches GCC's behaviour.
Reviewed By: emaste, cem
Differential Revision: https://reviews.freebsd.org/D26042
The added print was very helpful for debugging failed disk image creation.
Reviewed By: emaste
Differential Revision: https://reviews.freebsd.org/D23200
This should fix cases like su setting argv[0] to _su for /bin/sh.
Previously cheribsdbox (a crunched tool we use in CheriBSD to reduce the
size of our minimal disk images to allow loading them onto FPGAs without
waiting forever for the transfer) would complain about _su not being
compiled in, but now that we also look at AT_EXECPATH it correctly
invokes the sh tool.
Note: we use use AT_EXECPATH instead of the KERN_PROC_PATHNAME sysctl to get
the crunchgen binary name since it seems like KERN_PROC_PATHNAME just
returns the last cached path for a given hardlink.
When using `su`, instead of invoking /bin/csh this would invoke the last
used hardlink to cheribsdbox. This caused weird test failures when running
tests due to `id` being executed instead of `echo`:
$ id # id is a hardlink to /bin/cheribsdbox
$ su postgres -c 'echo 1' # su is also a hardlink
uid=1001(postgres) gid=1001(postgres) groups=1001(postgres)
Obtained from: CheriBSD
Reviewed By: emaste, brooks
Differential Revision: https://reviews.freebsd.org/D25998
This ensure that running make install inside buildenv correctly includes
the METALOG flags when building with -DNO_ROOT.
Reviewed By: brooks
Differential Revision: https://reviews.freebsd.org/D26038
The NVMe emulation code did not explicitly initialize queue head and
tail pointers on queue creation. As these pointers are part of
calloc()'ed memory, this only becomes a problem if the queues are
deleted and then recreated.
This error can manifest with messages about completions not matching a
command.
Some operating systems believe bhyve's emulated NVMe drive is failing
based on certain values in the SMART / Health Information log page being
zero. Fix is to set the reported temperature and available spare values
to reasonable defaults.
Submitted by: wanpengqian@gmail.com
Reviewed by: grehan
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24202
This solves an issue on stable/12 that causes certs to not get installed.
ls is apparently not in PATH during installworld, so TRUSTED_CERTS ends up
blank and nothing gets installed. We don't really require anything
ls-specific, though, so let's just simplify it.
MFC after: 3 days
In set_vht_extchan() the checks are performed in the order of VHT20/40/80.
That means if a channel has a lower and higheer VHT flag set we would
return the lower first.
We normally do not set more than one VHT flag so this change is supposed
to be a NOP but follows the logical thinking order of returning the best
first. Also we nowhere assert a single VHT flag so make sure we'll not
be stuck with VHT20 when we could do more.
While here add the debugging printfs for VHT160 and VHT80P80 which still
need doing once we deal with a driver at that level.
Reviewed by: adrian, gnn
MFC after: 2 weeks
Sponsored by: Rubicon Communications, LLC (d/b/a "Netgate")
Differential Revision: https://reviews.freebsd.org/D26088
