fmake does not have :tW, so use some clever :Q tricks to achieve the
same result. This won't work if PATH actually contains spaces, but
it's better than not working at all.
The top-level Makefile.inc1 uses 'make -C release -V' to lookup revision
information, which causes Makefile.vm and Makefile.vagrant to be included.
fmake has 2 issues here:
1. It doesn't like the empty result of .if ${VAR:Mfoo}
2. It doesn't like .if ${loop_item} ==
Update TSO limits to include all headers.
To make driver programming easier the TSO limits are changed to
reflect the values used in the BUSDMA tag a network adapter driver is
using. The TCP/IP network stack will subtract space for all linklevel
and protocol level headers and ensure that the full mbuf chain passed
to the network adapter fits within the given limits. See r287775
for a more detailed description.
Differential Revision: https://reviews.freebsd.org/D3477
Reviewed by: rmacklem
Make the system queue header file fully usable within C++ programs by
adding macros to define class lists.
This change is backwards compatible for all use within C and C++
programs. Only C++ programs will have added support to use the queue
macros within classes. Previously the queue macros could only be used
within structures.
The queue.3 manual page has been updated to describe the new
functionality and some alphabetic sorting has been done while
at it.
Differential Revision: https://reviews.freebsd.org/D2745
PR: 200827 (exp-run)
Implement support for reading USB quirks from the kernel environment.
Refer to the usb_quirk(4) manual page for more details on how to use
this new feature.
Submitted by: Maxime Soule <btik-fbsd@scoubidou.com>
PR: 203249
Always clear TDB_USERWR before fetching system call arguments. The
TDB_USERWR flag may still be set after a debugger detaches from a
process via PT_DETACH. Previously the flag would never be cleared
forcing a double fetch of the system call arguments for each system
call. Note that the flag cannot be cleared at PT_DETACH time in case
one of the threads in the process is currently stopped in
syscallenter() and the debugger has modified the arguments for that
pending system call before detaching.
When a process group leader exits, all of the processes in the group are
sent SIGHUP and SIGCONT if any of the processes are stopped. Currently this
behavior is triggered for any type of process stop including ptrace() stops
and transient stops for single threading during exit() and execve().
Thus, if a debugger is attached to a process in a group when the leader
exits, the entire group can be HUPed. Instead, only send the signals if a
process in the group is stopped due to SIGSTOP.
Threads holding a read lock of a sleepable rm lock are not permitted
to sleep. The rmlock implementation enforces this by disabling
sleeping when a read lock is acquired. To simplify the implementation,
sleeping is disabled for most of the duration of rm_rlock. However,
it doesn't need to be disabled until the lock is acquired. If a
sleepable rm lock is contested, then rm_rlock may need to acquire the
backing sx lock. This tripped the overly-broad assertion. Fix by
relaxing the assertion around the call to sx_xlock().
Before r278702 prefetch was blocked for I/Os > 1MB, after -- >= 1MB.
1MB I/Os are used for bulk operations in CTL (XCOPY, VERIFY), and disabling
prefetch for them reduced the performance.
