tracing/uprobes: Support multibuffer and soft-mode disabling

This is third version of uprobes-based dynamic events multibuffer and soft-mode disabling support work.

[v3]:
1. separate soft-mode disabling patch from multibuffer support patch.
2. fix some comments
3. coding style trivial
4. fix flags race in probe_event_disable

zhangwei(Jovi) (2):
tracing/uprobes: Support ftrace_event_file base multibuffer tracing/uprobes: Support soft-mode disabling

 kernel/trace/trace_uprobe.c |  121 +++++++++++++++++++++++++++++++++++--------
 1 file changed, 100 insertions(+), 21 deletions(-)

1.7.9.7