Now nhop_ref_object() unconditionally acquires a reference, and the new
nhop_try_ref_object() uses refcount_acquire_if_not_zero() to
conditionally acquire a reference. Since the former is cheaper, use it
when we know that the initial counter value is non-zero. No functional
change intended.
Reviewed by: melifaro
Differential Revision: https://reviews.freebsd.org/D25535
This implementation doesn't have any major deviations from the other EFI
ports. I've copied the boilerplate from arm and arm64.
I've tested this with the following boot flows:
OpenSBI (M-mode) -> u-boot (S-mode) -> loader.efi -> FreeBSD
OpenSBI (M-mode) -> u-boot (S-mode) -> boot1.efi -> loader.efi -> FreeBSD
Due to the way that u-boot handles secondary CPUs, OpenSBI >= v0.7 is required,
as the HSM extension is needed to bring them up explicitly. Because of this,
using BBL as the SBI implementation will not be possible. Additionally, there
are a few recent u-boot changes that are required as well, all of which will be
present in the upcoming v2020.07 release.
Looks good: emaste
Differential Revision: https://reviews.freebsd.org/D25135
These system calls already perform validation of their parameters when
called in capability mode, identical to cpuset_(get|set)affinity().
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
cpuset_(get|set)(affinity|domain)(2) permit a get or set of the calling
thread or process' CPU and domain set in capability mode, but only when
the thread or process ID is specified as -1. Extend this to cover the
case where the ID actually matches the caller's TID or PID, since some
code, such as our pthread_attr_get_np() implementation, always provides
an explicit ID.
It was not and still is not permitted to access CPU and domain sets for
other threads in the same process when the process is in capability
mode. This might change in the future.
Submitted by: Greg V <greg@unrelenting.technology> (original version)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25552
Add a more compact display format for kern.tty_info_kstacks inspired by
procstat -kk. Set it as a default one.
# sysctl kern.tty_info_kstacks=1
kern.tty_info_kstacks: 0 -> 1
# sleep 2
^T
load: 0.17 cmd: sleep 623 [nanslp] 0.72r 0.00u 0.00s 0% 2124k
#0 0xffffffff80c4443e at mi_switch+0xbe
#1 0xffffffff80c98044 at sleepq_catch_signals+0x494
#2 0xffffffff80c982c2 at sleepq_timedwait_sig+0x12
#3 0xffffffff80c43af3 at _sleep+0x193
#4 0xffffffff80c50e31 at kern_clock_nanosleep+0x1a1
#5 0xffffffff80c5119b at sys_nanosleep+0x3b
#6 0xffffffff810ffc69 at amd64_syscall+0x119
#7 0xffffffff810d5520 at fast_syscall_common+0x101
sleep: about 1 second(s) left out of the original 2
^C
# sysctl kern.tty_info_kstacks=2
kern.tty_info_kstacks: 1 -> 2
# sleep 2
^T
load: 0.24 cmd: sleep 625 [nanslp] 0.81r 0.00u 0.00s 0% 2124k
mi_switch+0xbe sleepq_catch_signals+0x494 sleepq_timedwait_sig+0x12
sleep+0x193 kern_clock_nanosleep+0x1a1 sys_nanosleep+0x3b
amd64_syscall+0x119 fast_syscall_common+0x101
sleep: about 1 second(s) left out of the original 2
^C
Suggested by: avg
Reviewed by: mjg
Relnotes: yes
Sponsored by: Mysterious Code Ltd.
Differential Revision: https://reviews.freebsd.org/D25487
Otherwise the same checks are duplicated across four different system
call implementations, cpuset_(get|set)(affinity|domain)(). No
functional change intended.
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
* Only read the DPCPU pointer once per xive_dispatch call.
* Optimize HE decoding for the common cases.
Reported by: jhibbits (in irc)
Reviewed by: jhibbits
Sponsored by: Tag1 Consulting, Inc.
Differential Revision: https://reviews.freebsd.org/D25545
- Get rid of the ifl_vm_addrs array. It is not used by any existing
consumer, so we are just dirtying a couple of cache lines for no
reason.
- Use uma_zalloc(fl->ifl_zone) instead of m_cljget(). Otherwise
m_cljget() is doing unnecessary work to look up the correct zone, when
iflib already knows what that zone is.
- ifl_gen is only used when INVARIANTS is on, so make that more clear.
- Fix some style nits and inconsistencies.
Reviewed by: gallatin
Tested by: pho
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25490
When refilling an rx freelist, make sure we only update the hardware
producer index if at least one cluster was allocated. Otherwise the
NIC is programmed to write a previously used cluster, typically
resulting in a use-after-free when packet data is written by the
hardware.
Also make sure that we don't update the fragment index cursor if the
last allocation attempt didn't succeed. For at least Intel drivers,
iflib assumes that the consumer index and fragment index cursor stay in
lockstep, but this assumption was violated in the face of cluster
allocation failures.
Reported and tested by: pho
Reviewed by: gallatin, hselasky
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25489
In the last IFUNC related changes to rtld, the code that handled non-PLT
GNU IFUNC relocations ended up getting lost. This could leave some
relocations unhandled, causing crashes or misbehavior. This change restores
the handling of these relocations, but now together with the other IFUNC
relocations, allowing resolvers to reference external symbols.
Reviewed by: kib
MFC after: 2 weeks
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D25550
The manual page documents "\$" to expand to either "$" or "#" followed by
a single space. In reality, the single space character is not appended.
PR: 247791
Submitted by: kd-dev@pm.me
MFC after: 7 days
- Add a missing Pp [1]
- Remove uses of Tn
- Use "Xr open 2" when appropriate
PR: 247783 [1]
Submitted by: PauAmma <pauamma@gundo.com> [1]
MFC after: 3 days
This adds support for the Broadcom bcm2711 PCI express controller, found
on the Raspberry Pi 4 (aka the bcm2838 SoC). The driver has only been
developed against the soldered-on VIA XHCI controller and not tested
with other end points.
Submitted by: Robert Crowston <crowston_protonmail.com>
Differential Revision: https://reviews.freebsd.org/D25068
Currently the linking order of the infiniband, IB, modules decide in which
order the clients are attached and detached. For example one IB client may
use resources from another IB client. This can lead to a potential deadlock
at shutdown. For example if the ipoib is unregistered after the ib_multicast
client is detached, then if ipoib is using multicast addresses a deadlock may
happen, because ib_multicast will wait for all its resources to be freed before
returning from the remove method.
Fix this by using module_xxx_order() instead of module_xxx().
Differential Revision: https://reviews.freebsd.org/D23973
MFC after: 1 week
Sponsored by: Mellanox Technologies
Allow guests to set the RTC bit in the ACPI PM control register.
This eliminates an annoying (and harmless) Linux kernel boot message.
PR: 244721
Submitted by: Jose Luis Duran
MFC after: 1 week
Also, add a new function nfsm_add_ext_pgs() which will either add a page
or add a new ext_pgs mbuf with a page to the mbuf list. Used by nfsm_strtom().
This is another in the series of commits that add support to the NFS client
and server for building RPC messages in ext_pgs mbufs with anonymous pages.
This is useful so that the entire mbuf list does not need to be
copied before calling sosend() when NFS over TLS is enabled.
Since ND_EXTPG is never set yet, there is no semantic change at this time.
On architectures that use RELA relocations it is safe to rerun the ifunc
resolvers on after all CPUs have started, but while they are sill parked.
On arm64 with big.LITTLE this is needed as some SoCs have shipped with
different ID register values the big and little clusters meaning we were
unable to rely on the register values from the boot CPU.
Add support for rerunning the resolvers on arm64 and amd64 as these are
both RELA using architectures.
Reviewed by: kib
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D25455
it would fail with EINVAL, breaking some of the Python regression
tests.
While here, cap the user-controlled message length.
Note that the code doesn't seem to be copying out the new length
in either (success or failure) case. This will be addressed separately.
Reviewed by: kib
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25392
sectors.
On my SanDisk Cruzer Blade 16GB USB stick this made formatting much faster:
x before
+ after
+--------------------------------------------------------------------------+
|+ |
|+ x |
|+ x x|
|A MA||
+--------------------------------------------------------------------------+
N Min Max Median Avg Stddev
x 3 15.89 16.38 16 16.09 0.2570992
+ 3 0.32 0.37 0.35 0.34666667 0.025166115
Difference at 95.0% confidence
-15.7433 +/- 0.414029
-97.8455% +/- 0.25668%
(Student's t, pooled s = 0.182665)
Reviewed by: emaste
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24508
This fixes Linux gettyname(3), with caveats (see PR).
PR: kern/240767
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25558
create /sys/class/power_supply/. This silences some warnings
from biology/linux-foldingathome.
Reported by: 0mp
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25557
TCGETS et al are frequently issued by Linux binaries while the previous code
avoidably ping-pongs a global sx lock and serializes on Giant.
Note that even with the fix the common case will serialize on a per-tty lock.
This is another in the series of commits that add support to the NFS client
and server for building RPC messages in ext_pgs mbufs with anonymous pages.
This is useful so that the entire mbuf list does not need to be
copied before calling sosend() when NFS over TLS is enabled.
Since ND_EXTPG is never set yet, there is no semantic change at this time.
Like other types of allocation, fpu_kern_ctx are frequently allocated per-cpu.
Provide the API and sketch some example consumers.
fpu_kern_alloc_ctx_domain() preferentially allocates memory from the
provided domain, and falls back to other domains if that one is empty
(DOMAINSET_PREF(domain) policy).
Maybe it makes more sense to just shove one of these in the DPCPU area
sooner or later -- left for future work.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D22053
They trigger for some people, the bug is not obvious, there are no takers
for fixing it, the issue already had to be there for years beforehand and
is low priority.
- Ask the firmware for the number of frames that can be stuffed in one
work request.
- Modify mp_ring to increase the likelihood of tx coalescing when there
are just one or two threads that are doing most of the tx. Add teeth
to the abdication mechanism by pushing the consumer lock into mp_ring.
This reduces the likelihood that a consumer will get stuck with all
the work even though it is above its budget.
- Add support for coalesced tx WR to the VF driver. This, with the
changes above, results in a 7x improvement in the tx pps of the VF
driver for some common cases. The firmware vets the L2 headers
submitted by the VF driver and it's a big win if the checks are
performed for a batch of packets and not each one individually.
Reviewed by: jhb@
MFC after: 2 weeks
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D25454
This is the first of a series of commits that add support to the NFS client
and server for building RPC messages in ext_pgs mbufs with anonymous pages.
This is useful so that the entire mbuf list does not need to be
copied before calling sosend() when NFS over TLS is enabled.
Since ND_EXTPG is never set yet, there is no semantic change at this time.
