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由 Steven Rostedt (Red Hat) 提交于
All the trace event flags have comments but the IGNORE_ENABLE flag which is set for ftrace internal events that should not be enabled via the debugfs "enable" file. That is, if the top level enable file is set, it will enable all events. It use to just check the ftrace event call descriptor "reg" field and skip those whithout it, but now some ftrace internal events have a reg field but still need to be skipped. The flag was created to ignore those events. Now document it. Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
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