RELSRCTOP is likely not as useful since make will always be running from
inside of .OBJDIR and using something like ${.CURDIR}/${RELSRCTOP} is
not redundant for ${SRCTOP}.
Sponsored by: Dell EMC Isilon
This fixes object files landing in the source tree in gnu/usr.bin/dtc
for GCC platforms.
We cannot reliably detect if an external compiler is used here, and the
default YES option does include GCC_BOOTSTRAP which implies that GCC may
be used for the build.
The problem manifests when not using an external compiler, and the host
compiler is clang. When a fresh build is done (no OBJDIR yet) the
'make obj' treewalk is done before 'make cross-tools', so
COMPILER_FEATURES at this point contains 'c++11' since the host compiler
was used for COMPILER_FEATURES. Once cross-tools builds the GCC
bootstrap compiler and then descends into 'make everything',
COMPILER_FEATURES no longer contains 'c++11' and MK_GPL_DTC defaults to
enabled. Now it builds in gnu/usr.bin/dtc without an OBJDIR preset and
drops files into the source tree.
The COMPILER_FEATURES check here is useful for knowing if we can *bootstrap*
C++11 things. Indeed we do bootstrap dtc as a build tool so it is
useful for enabling the BSD dtc for the build, but we end up needing the
GPL dtc for installation anyway.
Reviewed by: manu, emaste
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D12817
Without this the user has to mess with 'make -f Makefile.inc1 ...' to figure
out where the files are installed in the OBJDIR and then they need to copy them
to where they really wanted them. Using DESTDIR may be problematic after
r325001 as well.
The files will be installed to DESTDIR/NXTP where NXTP defaults to /nxb-bin.
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Some BMCs support power cycling the chassis via the chassis control
command 2 subcommand 2 (ipmitool called it 'chassis power cycle'). If
the BMC supports the chassis device, register a shutdown_final handler
that sends the power cycle command if request and waits up to 10s for
it to take effect. To minimize stack strain, we preallocate a ipmi
request in the softc. At the moment, we're verbose about what we're
doing.
Sponsored by: Netflix
When using a kernel built with the GZIO config option, dumpon -z can be
used to configure gzip compression using the in-kernel copy of zlib.
This is useful on systems with large amounts of RAM, which require a
correspondingly large dump device. Recovery of compressed dumps is also
faster since fewer bytes need to be copied from the dump device.
Because we have no way of knowing the final size of a compressed dump
until it is written, the kernel will always attempt to dump when
compression is configured, regardless of the dump device size. If the
dump is aborted because we run out of space, an error is reported on
the console.
savecore(8) is modified to handle compressed dumps and save them to
vmcore.<index>.gz, as it does when given the -z option.
A new rc.conf variable, dumpon_flags, is added. Its value is added to
the boot-time dumpon(8) invocation that occurs when a dump device is
configured in rc.conf.
Reviewed by: cem (earlier version)
Discussed with: def, rgrimes
Relnotes: yes
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D11723
library -- libpmcstat.
This includes PMC logging module, symbols lookup functions,
ELF parsing, process management, PMC attachment, etc.
This allows to reuse code while building new hwpmc(4)-based applications.
Also add pmcstat_symbol_search_by_name() function that allows to find
mapped IP range for a given function name.
Reviewed by: kib
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D12718
Mention per-location total order, out of thin air, and torn writes
guarantees. Mention C11 standard' memory model and one most important
FreeBSD additional requirement, that is aligned ordinary loads and
stores are atomic on processors.
The text is introductional and informal. Reference the C11 and
C++1{1,4,7} standards for authorative description.
In collaboration with: alc
Sponsored by: The FreeBSD Foundation (kib)
MFC after: 1 week
1. Add a reference to a good 3rd party list of compatible cables, but
provide suggestions for 'known good' vendors.
2. Change IP-based USB host-host example to a modern Ethernet one which
works 'out of box' with current Linux systems.
3. Explain that USB 3.0 is host-host, even though point-to-point soft
Ethernet can be achieved.
MFC after: 3 weeks
files. This is a follow up commit to r324721, which added sysrc(8) to
the SEE ALSO list.
Submitted by: Kurt Jaeger (lists at opsec.eu)
MFC after: 1 week
Now that OBJS has grown an OBJS_SRCS_FILTER variable, use this variable
in the computation of BCOBJS and LLOBJS too. Also move BCOBJS and LLOBJS
computation to be next to the OBJS computation: this should both make
the parallel structure clearer and serve to remind people changing OBJS
that parallel changes are required in BCOBJS and LLOBJS.
A side effect of this change is that BCOBJS and LLOBJS will be available
even when LLVM_LINK has not been defined, but that seems like a positive
change: there's no reason we can't ask "what bitcode files would you
generate" just because we can't link those files together into a
complete bitcode representation of a binary or library.
Reviewed by: sjg
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D12701
The build rule describing how to create ${PROG_FULL}.{bc,ll} is only
dependent on LLVM_LINK being defined, not on MK_DEBUG_FILES being "yes".
Move the addition of ${PROG_FULL}.{bc,ll} out of the conditional block
under `.if ${MK_DEBUG_FILES} != "no"` and up next to where the build
rules for ${PROG_FULL}.{bc,ll} are defined.
Reviewed by: emaste
MFC after: 1 week
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D12703
mbpool existed to support NICs with memory interfaces and all remaining
comsumers were removed earlier this year with NATM.
Reviewed by: jhb
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D10513
We previously taught the build system how to create files like libfoo.bc,
but neglected to teach it about cleaning such files up. Rectify this now.
MFC after: 1 week
Sponsored by: DARPA, AFRL
Previously before you could call unrhdr_delete you needed to
individually free every allocated unit. It is useful to be able to tear
down the unr without having to go through this process, as it is
significantly faster than freeing the individual units.
Reviewed by: cem, lidl
Approved by: rstone (mentor)
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D12591
All of these arguments are stored in m_ext, so there is no reason
to pass them in the argument list. Not all functions need the second
argument, some don't even need the first one. The second argument
lives in next cache line, so not dereferencing it is a performance
gain. This was discovered in sendfile(2), which will be covered by
next commits.
The second goal of this commit is to bring even more flexibility
to m_ext mbufs, allowing to create more fields in m_ext, opaque to
the generic mbuf code, and potentially set and dereferenced by
subsystems.
Reviewed by: gallatin, kbowling
Differential Revision: https://reviews.freebsd.org/D12615
