Ryan Stone 9742410797 Instead of only iterating over the set of known SDT probes when sdt.ko is ... loaded and unloaded, also have sdt.ko register callbacks with kern_sdt.c that will be called when a newly loaded KLD module adds more probes or a module with probes is unloaded. This fixes two issues: first, if a module with SDT probes was loaded after sdt.ko was loaded, those new probes would not be available in DTrace. Second, if a module with SDT probes was unloaded while sdt.ko was loaded, the kernel would panic the next time DTrace had cause to try and do anything with the no-longer-existent probes. This makes it possible to create SDT probes in KLD modules, although there are still two caveats: first, any SDT probes in a KLD module must be part of a DTrace provider that is defined in that module. At present DTrace only destroys probes when the provider is destroyed, so you can still panic the system if a KLD module creates new probes in a provider from a different module(including the kernel) and then unload the the first module. Second, the system will panic if you unload a module containing SDT probes while there is an active D script that has enabled those probes. MFC after: 1 month		2012-03-27 15:07:43 +00:00
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cyclic	Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.	2011-11-07 06:44:47 +00:00
dtmalloc	Custom DTrace kernel module files plus FreeBSD-specific DTrace providers.	2008-05-23 05:59:42 +00:00
dtrace	- For o32 ABI get arguments from the stack	2012-03-26 21:47:06 +00:00
fbt	Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.	2011-11-07 06:44:47 +00:00
lockstat	Add device part of DTrace/MIPS code	2012-03-24 05:14:37 +00:00
profile	Add device part of DTrace/MIPS code	2012-03-24 05:14:37 +00:00
sdt	Instead of only iterating over the set of known SDT probes when sdt.ko is	2012-03-27 15:07:43 +00:00
systrace	Correct the types of the arguments to return probes of the syscall	2011-11-11 03:49:42 +00:00
prototype.c	Custom DTrace kernel module files plus FreeBSD-specific DTrace providers.	2008-05-23 05:59:42 +00:00