John Baldwin 192846463a Rework the witness code to work with sx locks as well as mutexes. ... - Introduce lock classes and lock objects. Each lock class specifies a name and set of flags (or properties) shared by all locks of a given type. Currently there are three lock classes: spin mutexes, sleep mutexes, and sx locks. A lock object specifies properties of an additional lock along with a lock name and all of the extra stuff needed to make witness work with a given lock. This abstract lock stuff is defined in sys/lock.h. The lockmgr constants, types, and prototypes have been moved to sys/lockmgr.h. For temporary backwards compatability, sys/lock.h includes sys/lockmgr.h. - Replace proc->p_spinlocks with a per-CPU list, PCPU(spinlocks), of spin locks held. By making this per-cpu, we do not have to jump through magic hoops to deal with sched_lock changing ownership during context switches. - Replace proc->p_heldmtx, formerly a list of held sleep mutexes, with proc->p_sleeplocks, which is a list of held sleep locks including sleep mutexes and sx locks. - Add helper macros for logging lock events via the KTR_LOCK KTR logging level so that the log messages are consistent. - Add some new flags that can be passed to mtx_init(): - MTX_NOWITNESS - specifies that this lock should be ignored by witness. This is used for the mutex that blocks a sx lock for example. - MTX_QUIET - this is not new, but you can pass this to mtx_init() now and no events will be logged for this lock, so that one doesn't have to change all the individual mtx_lock/unlock() operations. - All lock objects maintain an initialized flag. Use this flag to export a mtx_initialized() macro that can be safely called from drivers. Also, we on longer walk the all_mtx list if MUTEX_DEBUG is defined as witness performs the corresponding checks using the initialized flag. - The lock order reversal messages have been improved to output slightly more accurate file and line numbers.		2001-03-28 09:03:24 +00:00
..
_limits.h
ansi.h
asm.h
atomic.h
bootinfo.h
clock.h
elf.h
endian.h	Unbreak build on alpha.	2001-03-24 15:17:27 +00:00
exec.h
frame.h
globaldata.h	Rework the witness code to work with sx locks as well as mutexes.	2001-03-28 09:03:24 +00:00
globals.h
limits.h
md_var.h
mutex.h	- Switch from using save/disable/restore_intr to using critical_enter/exit	2001-03-28 02:40:47 +00:00
param.h
pcpu.h	Rework the witness code to work with sx locks as well as mutexes.	2001-03-28 09:03:24 +00:00
ptrace.h
resource.h
setjmp.h
sigframe.h
types.h	Use a generic implementation of the Fowler/Noll/Vo hash (FNV hash).	2001-03-17 09:31:06 +00:00
ucontext.h