Current code doesn't check size of elf sections and may perform needless
actions of zero-sized memory allocation and similar.
The bigger issue is that alignment requirement of a zero-sized section
gets effectively applied to the next section if it has smaller alignment
requirement. But other tools, like gdb and consequently kgdb,
completely ignore zero-sized sections and thus may map symbols to
addresses differently.
Zero-sized sections are not typical in general.
Their typical (only, even) cause in FreeBSD modules is inline assembly that
creates custom sections which is found in pcpu.h and vnet.h. Mere inclusion
of one of those header files produces a custom section in elf output.
If there is no actual use for the section in a given module, then the
section remains empty.
Better solution is to avoid creating zero-sized sections altogether,
which is in plans.
Preloaded modules are handled in boot code (load_elf_obj.c), while
dynamically loaded modules are handled by kernel (link_elf_obj.c).
Based on code by: np
MFC after: 3 weeks
At present the cpufreq sysctl handler for current level setting would
allocate and deallocate a temporary buffer of 24KB even to handle a
read-only query. This puts unnecessary load on memory subsystem when
current level is checked frequently, e.g. when the likes of powerd
and system monitoring software are running.
Change the strategy to allocating a long-lived buffer for handling the
requests.
Reviewed by: njl
MFC after: 2 weeks
The aeskeys_{amd64,i386}.S content was mostly obtained from OpenBSD,
no objections to the license from core.
Hardware provided by: Sentex Communications
Tested by: fabient, pho (previous versions)
MFC after: 1 month
of add verb. Mention about maximum size limit for "freebsd-boot"
partition. It should be smaller than 545 KB (hardcoded in pmbr).
Show usage of SI unit suffixes in example.
Approved by: mav (mentor)
MFC after: 1 week
- fixes panics when Solaris/OpenSolaris pools that contain files
uploaded with the SMB protocol are accessed
Enable seting/unsetting the sharesmb property (dummy action)
- allows users who import pools from Solaris/Opensolaris to unset
the sharesmb property and get rid of annoying messages
PR: kern/145778, kern/148709
Approved by: pjd, delphij (mentor)
MFC after: 7 weeks
The device virtual addresses are now able to be allocated at runtime rather
than from the static pmap_devmap at boot. The only exception is memory
required before we have had a chance to dynamically allocate it.
While here reduce the space between the statically allocated devices by
reducing the distance between the virtual addresses.
Approved by: imp (mentor)
Deliverables: Small and clean code (1,4 KSLOC vs GNU's 8,5 KSLOC),
lower memory usage than GNU grep, GNU compatibility,
BSD license.
TODO: Performance is somewhat behind GNU grep but it is only
significant for bigger searches. The reason is complex, the
most important factor is that GNU grep uses lots of
optimizations to improve the speed of the regex library.
First, we need a modern regex library (practically by adopting
TRE), add support for GNU-style non-standard regexes and then
reevalute the performance issues and look for bottlenecks. In
the meantime, for those, who need better performance, it is
possible to build GNU grep by setting WITH_GNU_GREP.
Approved by: delphij (mentor)
Obtained from: OpenBSD (http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/grep/),
freegrep (http://github.com/howardjp/freegrep)
Sponsored by: Google SoC 2008
Portbuild tests run by: kris, pav, erwin
Acknowledgements to: fjoe (as SoC 2008 mentor),
everyone who helped in reviewing and testing
-fno-rtti. The clang libaries that really use exceptions and virtual
functions can enable LLVM_REQUIRES_EH and LLVM_REQUIRES_RTTI
respectively. This saves space on the resulting binaries and follows
what's being done upstream.
Submitted by: Dimitry Andric <dimitry at andric.com>
out that "on amd64, libstand.a is compiled for i386, but is still installed
under ${WORLDTMP}/usr/lib instead of ${WORLDTMP}/usr/lib32. Even if it
would be installed there, ld on amd64 is set up incorrectly with a
${TOOLS_PREFIX}/usr/lib/i386 default path, so it wouldn't link. The reason
it does link under gcc is that gcc passes -L${WORLDTMP}/usr/lib twice,
even for -m32 builds, which is also incorrect, but accidentally works in
this case."
Submitted by: Dimitry Andric <dimitry at andric.com>
a bug caused by r209235 where entering a number of blocks after
previously entering a size in MB/GB would result in the size of the
previous partition being used.
PR: bin/148266
Submitted by: jpaetzel
Approved by: rrs (mentor)
taskqueues, more than one task can be running simultaneously.
Also make taskqueue_run(9) static to the file, since there are no
consumers in the base kernel and the function signature needs to change
with this fix.
Remove mention of taskqueue_run(9) and taskqueue_run_fast(9) from the
taskqueue(9) man page.
Reviewed by: jhb
Approved by: zml (mentor)
test of newsyslog, as they were mainly made to test 'newsyslog -t',
but they do test the basic functionality.
The test 'framework' was based on dds@'s code in
src/tools/regression/bin/mv/.
Note that currently these tests are not fully correct for the
non-timestamp based rotation case, as it seems like newsyslog actually
by default keeps a file too much around.
MFC after: 3 weeks
instead of the traditional simple counter.
Using the time-stamp based file-names, once a log file is archived, it
will not change name until it is deleted. This means that many backup
systems will only perform one backup of the archived log file, instead
for performing a new backup of the logfile upon each logfile rotation.
This implementation is separate from the patches in the mentioned PR,
as I wasn't aware of the existence of the PR until after I had
implemented the same functionality as the patches in the PR provide.
Unlike the PR, this new code does honor the 'log count' in
newsyslog.conf so old logfiles are deleted. This new code does not
currently support never deleting the archived logfiles.
PR: bin/29363
MFC after: 3 weeks
to catch invalid signal numbers [1]. Use consistent style of
not assigning the return value to a local variable.
Reported by: Garrett Cooper <yanegomi gmail com> [1]
MFC after: 1 week
name of 32bit sibling architecture instead of the host one. Do the
same for hw.machine on amd64.
Add a safety belt debug.adaptive_machine_arch sysctl, to turn the
substitution off.
Reviewed by: jhb, nwhitehorn
MFC after: 2 weeks
This version adds support for ARC1880; additionally this version fixed
an issue where all devices on a SAS port gets offlined when any device
failed on the port [1].
Many thanks to Areca for continuing to support FreeBSD.
PR: kern/148502 [1]
Submitted by: Ching-Lung Huang <ching2048 areca com tw>
Obtained from: Areca
Tested by: Rich Ercolani <rercola acm jhu edu> [1]
MFC after: 2 weeks
working anymore. In addition more checks and operations were missing.
In case lla_lookup results in a match, get the ifaddr to update the
statistics counters, and check that the address is neither tentative,
duplicate or otherwise invalid before accepting the packet. If ok,
record the address information in the mbuf. [ as is done in case
lla_lookup does not return a result and we go through the FIB ].
Reported by: remko
Tested by: remko
MFC after: 2 weeks
`_libelf_ar_open()` to a new compilation unit "libelf_ar_util.c"
to break the circular dependency between "elf_memory.o" and
"libelf_ar.o".
Obtained from: elftoolchain
MFC after: 1 month
favour of `elf_getshdrnum()`, `elf_getphdrnum()` and `elf_getshdrstrndx()`
respectively.
* Add new manual pages for `elf_getshdrstrndx()`, `elf_getphdrnum()` and
`elf_getshdrnum()`.
* Add a deprecation warning for `elf_getshstrndx()`, `elf_getphnum()` and
`elf_getshnum()`.
Obtained from: elftoolchain
MFC after: 1 month
