Ryan Stone 6969ef6656 Correct a series of errors in the hand-rolled locking for drace_debug.c: ... - Use spinlock_enter()/spinlock_exit() to prevent a thread holding a debug lock from being preempted to prevent other threads waiting on that lock from starvation. - Handle the possibility of CPU migration in between the fetch of curcpu and the call to spinlock_enter() by saving curcpu in a local variable. - Use memory barriers to prevent reordering of loads and stores of the data protected by the lock outside of the critical section - Eliminate false sharing of the locks by moving them into the structures that they protect and aligning them to a cacheline boundary. - Record the owning thread in the lock to make debugging future problems easier. Reviewed by: rpaulo (initial version) MFC after: 2 weeks		2012-12-23 15:50:37 +00:00
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amd64	Change UL to ULL since time is 32 bits.	2012-07-17 14:36:40 +00:00
i386	Change UL to ULL since time is 32 bits.	2012-07-17 14:36:40 +00:00
mips	- For o32 ABI get arguments from the stack	2012-03-26 21:47:06 +00:00
powerpc	Implement DTrace for PowerPC. This includes both 32-bit and 64-bit.	2012-11-07 23:45:09 +00:00
dtrace_anon.c
dtrace_cddl.h	Add more compatibility structure members needed by the upcoming fasttrap	2010-08-22 11:04:43 +00:00
dtrace_clone.c
dtrace_debug.c	Correct a series of errors in the hand-rolled locking for drace_debug.c:	2012-12-23 15:50:37 +00:00
dtrace_hacks.c
dtrace_ioctl.c	Properly cast 64-bit dofhp_dof to pointer.	2012-03-26 21:22:51 +00:00
dtrace_load.c	Make the /dev/dtrace/helper node have the mode 0660. This allows	2010-09-01 12:08:32 +00:00
dtrace_modevent.c
dtrace_sysctl.c
dtrace_test.c
dtrace_unload.c	Destroy the helper device when unloading.	2010-08-22 11:05:37 +00:00
dtrace_vtime.c