The SIGTRAP signal is thrown from the kernel if EVENT_MASK (ptrace_event)
enables PTRACE_FORK. This new si_code helps debuggers to distinguish the
exact source of signal delivered for a debugger.
Another purpose of TRAP_CHLD is to retain the same behavior inside the
NetBSD kernel for process child traps and have an interface to monitor it.
Retrieving exact event and extended properties of process child trap is
available with PT_GET_PROCESS_STATE.
There is no behavior change for existing software.
This si_code value is NetBSD extension.
Sponsored by <The NetBSD Foundation>
This used to refer to x87 support for x86 machines.
npx isn't really a driver any more. we don't support x86 hardware
without an FPU, and we don't call it by that name in the code or
attach it as npx at something.
brought up on tech-kern. unfortunately the copy to port-i386 disappeared
in a spam filter.
SI_MESGQ
The signal was generated because of the arrival of a message
on an empty message queue.
This code was commented out since inception of this manual page (originally
located in siginfo(5)).
Sponsored by <The NetBSD Foundation>
SI_QUEUE
The signal was generated via sigqueue(2).
This code was commented out since inception of this manual page (originally
located in siginfo(5)).
Sponsored by <The NetBSD Foundation>
carp_clone_destroy calls ether_ifdetach so not calling ether_ifattach is
inconsistent. If we add something pair of initialization and destruction
to ether_ifattach and ether_ifdetach (e.g., mutex_init/mutex_destroy),
ether_ifdetach of carp_clone_destroy won't work. So use ether_ifattach.
In order to do so, make ether_ifattach accept the 2nd argument (lla) as
NULL to allow carp to initialize its link level address by itself.
This commit does not actually introduce the UVM_HOTPLUG option.
However it does provide developers a way to review, test and try out
the API.
To do this, please go to tests/sys/uvm/ and build and run the tests
there. The tests also have a set of basic load tests, to get a measure
of the performance penalties due to enabling the UVM_HOTPLUG option.
In order to build the tests you need to have at least done the
following in $SRC/
cd $SRC; $NBMAKE do-distrib-dirs includes
cd $SRC/lib/csu; $NBMAKE all install || exit
cd $SRC/external/gpl3/gcc/lib/libgcc/libgcc_s; $NBMAKE all install || exit
cd $SRC/external/gpl3/gcc/lib/libgcc/libgcc; $NBMAKE all install || exit
cd $SRC/lib/libc; $NBMAKE includes all install || exit
cd $SRC/lib/libpthread; $NBMAKE all install || exit
cd $SRC/lib/libm; $NBMAKE all install || exit
cd $SRC/external/gpl3/gcc/lib/libstdc++-v3/; $NBMAKE all install || exit
Once the development environment has these userspace libraries, one
can simple build using $NBMAKE and finally test the kernel API using
atf-run|atf-report
every platform. Thus setting OBJMACHINE, allowed one to keep
in-tree objdirs with multiple builds. With the advent of evb*, this
has become impossible until now. Introduce OBJMACHINE_ARCH that
adds ${MACHINE_ARCH} to the objdir so that we have unique objdirs
per build again. Until we restructure things to that this is not
necessary, it is the simplest fix.
Data structures are now protected by a per-adapter mutex at IPL_BIO
that is created by the scsibus or atapibus instance when the adapter
is configured.
The enable reference counter and the channel freeze counter which are
currently used by HBA code before the adapter is configured, are made
atomic.
The target drivers are now all tagged as D_MPSAFE.
Almost all HBA drivers still require the kernel lock to present,
so all callbacks into HBA code are still protected by kernel lock
unless the driver is tagged as SCSIPI_ADAPT_MPSAFE.
TODO: refactor sd and cd to use dksubr.
hannken