not performed directly by the pmap. Instead, they are performed by
vm_page_free_pages_toq(). (This is the same approach that we use on x86.)
Reviewed by: kib, markj
MFC after: 10 days
Differential Revision: https://reviews.freebsd.org/D20627
iterate over consecutive vm_map entries, and that can easily just
'remember' the prev value instead of looking it up.
Approved by: kib (mentor)
Differential Revision: https://reviews.freebsd.org/D20628
Normally td_runtime is updated on context switch, but there are some kernel
threads that due to high absolute priority may run for many seconds without
context switches (yes, that is bad, but that is true), which means their
td_runtime was not updated all that time, that made them invisible for top
other then as some general CPU usage.
MFC after: 1 week
Sponsored by: iXsystems, Inc.
for giving cred to a map entry backed by an object, and use them
instead of the code duplicated inline now.
Approved by: kib (mentor)
Differential Revision: https://reviews.freebsd.org/D20370
Both virtio_net and e82545 network frontends have code to validate and
generate MAC addresses. These functionalities are replicated in the two
files, so we move them in a separate compilation unit.
Reviewed by: rgrimes, bryanv, imp, kevans
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20626
part of ciss_detach. It's a left-over debug that isn't needed and also
discloses a kernel address. Only root could provoke as part of a
devctl or kldunload.
Submitted by: Fuqian Huang
MFC After: 1 week
Implements the missing test cases for epair in a similar fashion to the
existing tests. Fixes shared abstractions to work with epair tests.
Submitted by: Ryan Moeller <ryan@freqlabs.com>
Reviewed by: asomers
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D20498
Memory copy is too heavy operation to do under the congested lock.
Moving it out reduces congestion by many times to almost invisible.
Since the original zio removed from the queue, and the child zio is
not executed yet, I don't see why would the copy need protection.
My guess it just remained like this from the time when lock was not
dropped here, which was added later to fix lock ordering issue.
Multi-threaded sequential write tests with both HDD and SSD pools
with ZVOL block sizes of 4KB, 16KB, 64KB and 128KB all show major
reduction of lock congestion, saving from 15% to 35% of CPU time
and increasing throughput from 10% to 40%.
Reviewed by: ahrens, behlendorf, ryao
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
libunwind and openmp to the upstream release_80 branch r363030
(effectively, 8.0.1 rc2). The 8.0.1 release should follow this within a
week or so.
MFC after: 2 weeks
demotion failure. Otherwise, some callers to pmap_demote_l2_locked(), such
as pmap_protect(), may leave an incorrect mapping in place on a demotion
failure.
Change pmap_demote_l2_locked() so that it handles addresses that are not
superpage aligned. Some callers to pmap_demote_l2_locked(), such as
pmap_protect(), may not pass a superpage aligned address.
Change pmap_enter_l2() so that it correctly calls vm_page_free_pages_toq().
The arm64 pmap is updating the count of wired pages when freeing page table
pages, so pmap_enter_l2() should pass false to vm_page_free_pages_toq().
Optimize TLB invalidation in pmap_remove_l2().
Reviewed by: kib, markj (an earlier version)
Discussed with: andrew
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D20585
asserted. Some development boards for example will reset on DTR,
and some radio interfaces will transmit on RTS.
This patch allows "stty -f /dev/ttyu9.init -rtsdtr" to prevent
RTS and DTR from being asserted on open(), allowing these devices
to be used without problems.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D20031
between each byte either sent or received). However, most transitions
actually complete in 2-3 microseconds.
By polling the status register with a delay of 4us with exponential
backoff, the performance of most IPMI operations is significantly
improved:
- A BMC update on a Supermicro x9 or x11 motherboard goes from ~1 hour
to ~6-8 minutes.
- An ipmitool sensor list time improves by a factor of 4.
Testing showed no significant improvements on a modern server by using
a lower delay.
The changes should also generally reduce the total amount of CPU or
I/O bandwidth used for a given IPMI operation.
Submitted by: Loic Prylli <lprylli@netflix.com>
Reviewed by: jhb
MFC after: 2 weeks
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D20527
necessary support functions in cpu-v6.h, and it may be that the only armv6
platform we support (RPi, the bcm2835 SOC) is incapable of supporting hwpmc.
Reported by: dim@
r348783 changed the behavior of the kernel mappings and broke booting on G5.
- Split the kernel mapping logic out so that the case where we are
running from the wrong memory space is handled using identity
mappings, and the case where we are not using a DMAP is handled by
forcibly mapping the kernel into the dmap range as intended by
r348783.
Reported by: Mikael Urankar
Reviewed by: luporl
Approved by: jhibbits (mentor)
Differential Revision: https://reviews.freebsd.org/D20608
Sync libarchive with vendor.
Relevant vendor changes:
- check_symlinks_fsobj() without chdir() and fchdir()
- bsdtar.1 manpage fixes
- patches from OpenBSD to libarchive_fe/passphrase.c
- version bumped to 3.4.0
MFC after: 2 weeks
PR/203585 this appears to have been broken by r235959, which predates
the ipfilter 5.1.2 import into FreeBSD.
The IPv6 checksum calculation is incorrect. To resolve this we call
in6_cksum() to do the the heavy lifting for us, through a new function
ipf_pcksum6(). Should we need to revisit this area again, a DTrace probe
is added to aid with future debugging.
PR: 203275, 203585
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D20583
assumed the pfil hook registration performed in ipf_modload() would take
care of this. However ipf_modload() is only called when the ipl kld is
loaded or when ipfilter is first called when it is statically linked
into the kernel at build time.
Prior to this, even though r302298 has been in the tree for a while, it
has never been used. So, r302298 in reality begins now.
PR: 212000
Reported by: ahsanb@
MFC after: 1 month
Add the MK_MAIL dependant file to the runtime package as well as the
MK_KERBEROS ones the empty locate database, the FreeBSD copyright file
and the GENERIC.hints.
Tag the unbound link from /etc to /var to belong in the unbound package.
Reviewed by: bapt
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D20607
This way every directory is at least present in packages.
While here tag some directory from being in sendmail or dma
Reviewed by: bapt
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D20605
This fixes META_MODE rebuilding since it assumes that it this is
a non-consistent build command. These are always unencoded consistently
though and do not need to use the .OODATE/$? mechanism.
MFC after: 2 weeks
Reported by: npn
Sponsored by: DellEMC
This was lost in r335910 for some reason.
This also fixes a META_MODE rebuild issue in some modules [1].
MFC after: 2 weeks
Reported by: npn [1]
Sponsored by: DellEMC
New sysctl/tunables can now set the interval (in seconds) between
rate-limited crypto warnings. The new sysctls are:
- kern.cryptodev_warn_interval for /dev/crypto
- net.inet.ipsec.crypto_warn_interval for IPsec
- kern.kgssapi_warn_interval for KGSSAPI
Reviewed by: cem
MFC after: 1 month
Relnotes: yes
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D20555
This documents the behavior of sysctl_msec_to_ticks and
SYSCTL_{ADD,}_SBINTIME_[UM]SEC.
Reviewed by: cem
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D20596
length to the difference of the two offsets that define the gap, to
avoid overflow, rather that adding the length to an offset and
comparing that to another offset.
This addresses an overflow issue reported by Peter Holm on i386.
Reported by: pho
Tested by: pho
Approved by: kib (mentor)
Differential Revision: https://reviews.freebsd.org/D20594
The VirtIO standard supports two schemes for notification suppression:
a notification enable bit and a more sophisticated one (event_idx) that
also supports delayed notifications. Currently bhyve fully supports
only the first scheme. This patch hides the notification suppression
internals by means of two inline routines, vq_kick_enable() and
vq_kick_disable(), and makes the code more readable.
Moreover, further improve readability by replacing the call to mb()
with a call to atomic_thread_fence_seq_cst(), which is already used
in virtio.c
Reviewed by: pmooney_pfmooney.com, bryanv
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20581
When building a kernel supporting PSERIES but not POWERNV,
the compiler would complain about an error variable being
possibly used before being initialized.
In practice, however, this should never happen. In any case, it
is now initialized to an error value.
Before this change, OFW initrd (as md) handling code was simulating an ofwbus
device. But as there isn't really a Device Tree (DT) node representing OFW
initrd (it is specified in 2 properties under /chosen), its driver was in fact
stealing other driver's DT node. This was noticed after MD_ROOT_MEM became
default and QEMU's USB keyboard stopped working under VNC.
This change consists in simplifying the process of detection and mapping of
initrd memory, turning it into a simple startup step, instead of trying to
simulate a device.
Reviewed by: jhibbits
Differential Revision: https://reviews.freebsd.org/D20553
The two most recent additions to the elf auxiliary vector are
HWCAP and HWCAP2 which describe platform specific cpu capabilities.
Make procstat recognize these fields so that they aren't displayed
as UNKNOWN.
Reviewed by: trociny, markj
Approved by: markj (mentor)
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D20582
AT_HWCAP is a field in the elf auxiliary vector meant to describe
cpu-specific hardware features. For RISC-V we want to use this to
indicate the presence of any standard extensions supported by the CPU.
This allows userland applications to query the system for supported
extensions using elf_aux_info(3).
Support for an extension is indicated by the presence of its
corresponding bit in AT_HWCAP -- e.g. systems supporting the 'c'
extension (compressed instructions) will have the second bit set.
Extensions advertised through AT_HWCAP are only those that are supported
by all harts in the system.
Reviewed by: jhb, markj
Approved by: markj (mentor)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20493
