dev/dtrace/dtrace.c

247  *     etc.  Importantly, dtrace_lock is _not_ required when in probe context;
251  * (2) dtrace_provider_lock is required when manipulating provider state, or
252  *     when provider state must be held constant.
254  * (3) dtrace_meta_lock is required when manipulating meta provider state, or
255  *     when meta provider state must be held constant.
603  * Set DTrace verbosity when an error occured (0 = disabled, 1 = enabld).
604  * Errors are reported when a DIFO or a DOF has been rejected by the kernel.
837 			 * that the counter is never zero when we have seen
2302 		 * value that defaults to 1 when not present.  If additional
2973 	 * ensures that we won't trip up when access checking tests the
3814 				 * coherence, however, is when the specified
3927 			 * (when we fetch addr from mstate->dtms_strtok)
5643 		 * when it next leaves the kernel.
5653  * Both activate only when the currently running process next leaves the
6374 				 * when we're in the ACTIVE state.  If we're
6514 			 * we were processing when we experienced the error.
7872  * will need to grab the dtrace_lock when it reenters the framework through
12635 	 * Darwin's DEVFS layer acquired the minor number for this "device" when it called
12971 	cyc_time_t when;
13153 	when.cyt_when = 0;
13154 	when.cyt_interval = opt[DTRACEOPT_CLEANRATE];
13156 	state->dts_cleaner = cyclic_add(&hdlr, &when);
13162 	when.cyt_when = 0;
13163 	when.cyt_interval = dtrace_deadman_interval;
13166 	state->dts_deadman = cyclic_add(&hdlr, &when);
13337 			 * will remain a multiple of a megabyte when
14727 	 * In this case only, it is okay to have lazy dof when dof mode is DTRACE_DOF_MODE_LAZY_OFF
14774 				 * when we released the dtrace lock. We have to dump this generation,
15108  * when the kext is loaded in memory, but before calling the
15251 	 * cpu_lock here -- it is legal for cpu_lock to be held when loading a
15252 	 * module.  (In particular, this happens when loading scheduling
15499 		 * buffer will be freed when the consumer exits.)
15863 	 * Only relinquish control of the kernel debugger interface when there
16857 		 * For all queries, we return EINVAL when the user specified
17458 		 * of enabled cpus. This call avoids any race when finding