* Ravi Bangoria <ravi.bangoria@xxxxxxxxxxxxx> [2018-06-28 10:52:08]: > Reference counter gate the invocation of probe. If present, > by default reference count is 0. Kernel needs to increment > it before tracing the probe and decrement it when done. This > is identical to semaphore in Userspace Statically Defined > Tracepoints (USDT). > > Document usage of reference counter. > > Signed-off-by: Ravi Bangoria <ravi.bangoria@xxxxxxxxxxxxx> > Acked-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx> Unlike perf, this mechanism cannot detect ref count and depends on the users data. What happens if the user mistakenly provides a wrong location? I guess he can corrupt some other data structures? Hence I would think twice of advertising this mechanism. i.e keep this as an undocumented feature.
