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mirror of https://git.FreeBSD.org/src.git synced 2024-12-24 11:29:10 +00:00
freebsd/sys/powerpc/include
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 Our SHRT_MIN definition was actually 4 bits too big. 2000-11-04 21:01:44 +00:00
ansi.h Correct disordering which is corresponding to bde's fix to 2001-02-17 14:51:11 +00:00
asm.h PowerPC assembler #defines. 2001-01-07 03:43:21 +00:00
atomic.h PowerPC atomic operation functions. 2001-01-07 03:46:01 +00:00
bootinfo.h
clock.h Move DELAY() from <machine/clock.h> to <sys/systm.h> 2000-10-15 09:51:49 +00:00
elf.h PowerPC specific ELF ABI definitions. 2001-01-01 21:54:48 +00:00
endian.h Unbreak build on alpha. 2001-03-24 15:17:27 +00:00
exec.h PowerPC platform-specific page size setting. 2001-01-01 23:26:39 +00:00
frame.h Minor style tweaks. 2001-01-02 00:11:41 +00:00
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 - Remove compatibility macros for accessing per-cpu variables. 2001-01-11 14:46:26 +00:00
limits.h Our SHRT_MIN definition was actually 4 bits too big. 2000-11-04 21:01:44 +00:00
md_var.h Next phase in the PCI subsystem cleanup. 2000-12-08 22:11:23 +00:00
mutex.h - Switch from using save/disable/restore_intr to using critical_enter/exit 2001-03-28 02:40:47 +00:00
param.h PowerPC platform-specific definitions (modeled on sys/i386/include/param.h) 2001-01-02 00:06:45 +00:00
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 PowerPC platform-specific definitions (modeled on sys/i386/include/setjmp.h) 2001-01-02 00:34:24 +00:00
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 Minor style tweaks. 2001-01-02 00:11:41 +00:00