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tracing/probe: Add trace flag access APIs for trace_probe

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Add trace_probe_test/set/clear_flag() functions for accessing
trace_probe.flag field.
This flags field should not be accessed directly.

Link: http://lkml.kernel.org/r/155931585683.28323.314290023236905988.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Masami Hiramatsu
2019-06-01 00:17:37 +09:00
committed by Steven Rostedt (VMware)
parent b5f935ee13
commit 747774d6b0
4 changed files with 41 additions and 23 deletions
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4
kernel/trace/trace_probe.c
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@@ -948,7 +948,7 @@ int trace_probe_add_file(struct trace_probe *tp, struct trace_event_file *file)
link->file = file;
INIT_LIST_HEAD(&link->list);
list_add_tail_rcu(&link->list, &tp->files);
tp->flags |= TP_FLAG_TRACE;
trace_probe_set_flag(tp, TP_FLAG_TRACE);
return 0;
}
@@ -979,7 +979,7 @@ int trace_probe_remove_file(struct trace_probe *tp,
kfree(link);
if (list_empty(&tp->files))
tp->flags &= ~TP_FLAG_TRACE;
trace_probe_clear_flag(tp, TP_FLAG_TRACE);
return 0;
}