In r353734 the use of the page caches was limited to systems with a
relatively large amount of RAM per CPU. This was to mitigate some
issues reported with the system not able to keep up with memory pressure
in cases where it had been able to do so prior to the addition of the
direct free pool cache. This change re-enables those caches.
The change modifies uma_zone_set_maxcache(), which was introduced
specifically for the page cache zones. Rather than using it to limit
only the full bucket cache, have it also set uz_count_max to provide an
upper bound on the per-CPU cache size that is consistent with the number
of items requested. Remove its return value since it has no use.
Enable the page cache zones unconditionally, and limit them to 0.1% of
the domain's pages. The limit can be overridden by the
vm.pgcache_zone_max tunable as before.
Change the item size parameter passed to uma_zcache_create() to the
correct size, and stop setting UMA_ZONE_MAXBUCKET. This allows the page
cache buckets to be adaptively sized, like the rest of UMA's caches.
This also causes the initial bucket size to be small, so only systems
which benefit from large caches will get them.
Reviewed by: gallatin, jeff
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D22393
Add bit_ffs_area_at and bit_ffc_area_at functions for searching a bit
string for a sequence of contiguous set or unset bits of at least the
specified size.
The bit_ffc_area function will be used by the Intel ice driver for
implementing resource assignment logic using a bitstring to represent
whether or not a given index has been assigned or is currently free.
The bit_ffs_area, bit_ffc_area_at and bit_ffs_area_at functions are
implemented for completeness.
I'd like to add further test cases for the new functions, but I'm not
really sure how to add them easily. The new functions depend on specific
sequences of bits being set, while the bitstring tests appear to run for
varying bit sizes.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Submitted by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed by: asomers@, erj@
MFC after: 1 week
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D22400
This Makefile sets KERN_OPTS. This permits kernel module Makefiles to
use KERN_OPTS to control the value of variables such as SRCS that are
used by bsd.kmod.mk for KERN_OPTS values that honor WITH/WITHOUT
options for standalone builds.
Each boot, regenerate /var/run/os-release based on the currently running
system. Create a /etc/os-release symlink pointing to this file (so that this
doesn't create a new reason /etc can not be mounted read-only).
This is compatible with what other systems do and is what the sysutil/os-release
port attempted to do, but in an incomplete way. Linux, Solaris and DragonFly all
implement this natively as well. The complete standard can be found at
https://www.freedesktop.org/software/systemd/man/os-release.html
Moving this to the base solves both the non-standard location problem with the
port, as well as the lack of update of this file on system update.
Bump __FreeBSD_version to 1300060
PR: 238953
Differential Revision: https://reviews.freebsd.org/D22271
Mount the UEFI ESP on /boot/efi. No current system uses this by default, but
there are many ad-hoc schemes that do this in /efi or /esp or /uefi and adding a
new directory at the top-level would have a much higher likelihood of
collision. Document this in /etc/mtree/BSD.root.mtree and create EFIDIR and
related variables in bsd.own.mk.
Differential Revision: https://reviews.freebsd.org/D21344
Support for NO_CTF, NO_DEBUG_FILES, NO_INSTALLLIB, NO_MAN, NO_PROFILE,
and NO_WARNS as deprecated in 2014 with a warning added for each one
found. Turn these into error in preperation for removal of compatability
support before FreeBSD 13.
Reviewed by: imp
Relnotes: yes
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D22448
r354289 armv6: Switch to LLD by default
r354290 Take arm.arm (armv5) out of universe
r354348 armv6, armv7: Switch to llvm-libunwind by default
r354660 Enable the RISC-V LLVM backend by default.
as well as lib32 changes
Sponsored by: The FreeBSD Foundation
As of FreeBSD 10.1 the autofs(5) is available for automounting, and the
amd man page has indicated that the in-tree copy of amd is obsolete.
Disable it by default for now, with the expectation that it will be
removed before FreeBSD 13.0.
Reviewed by: kevans
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D22460
FreeBSDlua ("flua") is a FreeBSD-private lua, flavored with whatever
extensions we need for base system operations. We currently support a subset
of lfs and lposix that are used in the rewrite of makesyscall.sh into lua,
added in r354786.
flua is intentionally written such that one can install standard lua and
some set of lua modules from ports and achieve the same effect.
linit_flua is a copy of linit.c from contrib/lua with lfs and lposix added
in. This is similar to what we do in stand/. linit.c has been renamed to
make it clear that this has flua-specific bits.
luaconf has been slightly obfuscated to make extensions more difficult. Part
of the problem is that flua is already hard enough to use as a bootstrap
tool because it's not in PATH- attempting to do extension loading would
require a special bootstrap version of flua with paths changed to protect
the innocent.
src.lua.mk has been added to make it easy for in-tree stuff to find flua,
whether it's bootstrap-flua or relying on PATH frobbing by Makefile.inc1.
Reviewed by: brooks, emaste (both earlier version), imp
Differential Revision: https://reviews.freebsd.org/D21893
This driver was largely rewritten in 2015 (svn r235911) but the man page was
never updated to match.
Reviewed by: trasz
MFC after: 2 weeks
Sponsored by: Axcient
Differential Revision: https://reviews.freebsd.org/D22339
After r354748-354750 all uses of the IP6_EXTHDR_CHECK() and
IP6_EXTHDR_GET() macros are gone from the kernel. IP6_EXTHDR_GET0()
was unused. Remove the macros and update the documentation.
Sponsored by: Netflix
In order to allow software with multiple (different) options
for lex and yacc add extra per-file options to the calls.
This is especially useful when one .l file needs -Pprefix.
Reviewed by: imp
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D22337
We need to ensure that installdirs-FOO runs before installfiles-FOO since
otherwise the directory may not exist when we attempt to install the target.
This was randomly causing failures in our Jenkins instance when installing
drti.o in cddl/lib/drti.
Reviewed By: brooks
Differential Revision: https://reviews.freebsd.org/D22382
By using '__' instead of '.' as the separator we can also support systems
that use dash as /bin/sh (it's the default shell on Ubuntu/Debian). Dash
will unset any environment variables that use a non alphanumeric+undedscore
character and therefore submakes will fail to import the COMPILER_*
variables if we use '.' as the separator.
Reviewed By: emaste
Differential Revision: https://reviews.freebsd.org/D22381
This driver allows to usage of the paravirt SCSI controller
in VMware products like ESXi. The pvscsi driver provides a
substantial performance improvement in block devices versus
the emulated mpt and mps SCSI/SAS controllers.
Error handling in this driver has not been extensively tested
yet.
Submitted by: vbhakta@vmware.com
Relnotes: yes
Sponsored by: VMware, Panzura
Differential Revision: D18613
Disable the use of executable 2M page mappings in EPT-format page
tables on affected CPUs. For bhyve virtual machines, this effectively
disables all use of superpage mappings on affected CPUs. The
vm.pmap.allow_2m_x_ept sysctl can be set to override the default and
enable mappings on affected CPUs.
Alternate approaches have been suggested, but at present we do not
believe the complexity is warranted for typical bhyve's use cases.
Reviewed by: alc, emaste, markj, scottl
Security: CVE-2018-12207
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D21884
Don't depend on CPUTYPE to define powerpcspe CFLAGS, they should be set
unconditionally. This reduces duplication. Also, set some CFLAGS as
gcc-only, because clang's SPE support always uses the SPE ABI, it's not an
optional feature.
Previously ntb_transport(4) required at least 6 scratchpad registers,
plus 2 more for each additional memory window. That is too much for some
configurations, where several drivers have to share resources of the same
NTB hardware. This patch introduces new compact version of the protocol,
requiring only 3 scratchpad registers, plus one more for each additional
memory window. The optimization is based on fact that neither of version,
number of windows or number of queue pairs really need more then one byte
each, and window sizes of 4GB are not very useful now. The new protocol
is activated automatically when the configuration is low on scratchpad
registers, or it can be activated explicitly with loader tunable.
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
Address Lookup Table (A-LUT) being enabled allows to specify separate
translation for each 1/128th or 1/256th of the BAR2. Previously it was
used only to limit effective window size by blocking access through some
of A-LUT elements. This change allows A-LUT elements to also point
different memory locations, providing to upper layers several (up to 128)
independent memory windows. A-LUT hardware allows even more flexible
configurations than this, but NTB KPI have no way to manage that now.
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
We will soon remove the BSD_CRTBEGIN option (and will use the new CRT
files always) as part of the GCC 4.2.1 removal. Right now BSD_CRTBEGIN
works everywhere but sparc64; add a reference to the PR in case anyone
stumbles across this and is looking for more information.
The man page incorrectly described the use of the"len" argument, which
is updated to the number of bytes copied and not reduced by the number
of bytes copied.
This is a content change.
Add some diagnostic output.
This works around the fact that buildworld calls cleandir in libexec
with the wrong MACHINE_ARCH (i386 on amd64) when the OBJ directory is empty.
Reported by: bdragon, jkim
Thanks to bapt, bz, cem, woodsb02, Neel Chauhan and Salvador Martínez
Mármol for helping test the initial 9000-series support.
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Alter bsd.compat.mk to set MACHINE and MACHINE_ARCH when included
directly so MD paths in Makefiles work. In the process centralize
setting them in LIBCOMPATWMAKEENV.
Alter .PATH and CFLAGS settings in work when the Makefile is included.
While here only support LIB32 on supported platforms rather than always
enabling it and requiring users of MK_LIB32 to filter based
TARGET/MACHINE_ARCH.
The net effect of this change is to make Makefile.libcompat only build
compatability libraries.
Changes relative to r354449:
Correct detection of the compiler type when bsd.compat.mk is used
outside Makefile.libcompat. Previously it always matched the clang
case.
Set LDFLAGS including the linker emulation for mips where -m32 seems to
be insufficent.
Reviewed by: imp, kib (origional version in r354449)
Obtained from: CheriBSD (conceptually)
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D22251
GCC 4.2.1 is being removed before FreeBSD 13, as are some other
components required by FreeBSD/sparc64. Contemporary GCC does not build
and there is currently no indication that anyone is going to address
these issues.
PR: 228919, 233405, 236839, 239851
Alter bsd.compat.mk to set MACHINE and MACHINE_ARCH when included
directly so MD paths in Makefiles work. In the process centralize
setting them in LIBCOMPATWMAKEENV.
Alter .PATH and CFLAGS settings in work when the Makefile is included.
While here only support LIB32 on supported platforms rather than always
enabling it and requiring users of MK_LIB32 to filter based
TARGET/MACHINE_ARCH.
The net effect of this change is to make Makefile.libcompat only build
compatability libraries.
Reviewed by: imp, kib
Obtained from: CheriBSD (conceptually)
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D22251
