tracing/probe: Add trace_event_file access APIs for trace_probe

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Add trace_event_file access APIs for trace_probe data structure.
This simplifies enabling/disabling operations in uprobe and kprobe
events so that those don't touch deep inside the trace_probe.

This also removing a redundant synchronization when the
kprobe event is used from perf, since the perf itself uses
tracepoint_synchronize_unregister() after disabling (ftrace-
defined) event, thus we don't have to synchronize in that
path. Also we don't need to identify local trace_kprobe too
anymore.

Link: http://lkml.kernel.org/r/155931584587.28323.372301976283354629.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

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This commit is contained in:

Masami Hiramatsu 2019-06-01 00:17:26 +09:00 • committed by Steven Rostedt (VMware)

parent 46e5376d40

commit b5f935ee13

4 changed files with 109 additions and 101 deletions

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87

kernel/trace/trace_kprobe.c

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47

kernel/trace/trace_probe.c

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36

kernel/trace/trace_probe.h

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42

kernel/trace/trace_uprobe.c

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