linux-kernel - [PATCH v3] tracing: creates 'tracing_is

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Date:	Fri, 18 Oct 2013 21:15:54 -0300
From:	"Geyslan G. Bem" <geyslan@...il.com>
To:	kernel-br@...glegroups.com
Cc:	"Geyslan G. Bem" <geyslan@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3] tracing: creates 'tracing_is_disabled()'

This patch creates the function 'tracing_is_disabled', which
can be used outside trace.c.

Signed-off-by: Geyslan G. Bem <geyslan@...il.com>
---
 kernel/trace/trace.c | 5 +++++
 kernel/trace/trace.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 7974ba2..d7ceaf6 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2964,6 +2964,11 @@ int tracing_open_generic(struct inode *inode, struct file *filp)
 	return 0;
 }
 
+bool tracing_is_disabled(void)
+{
+	return (tracing_disabled) ? true: false;
+}
+
 /*
  * Open and update trace_array ref count.
  * Must have the current trace_array passed to it.
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 10c86fb..5deaa3b 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -514,6 +514,7 @@ void tracing_reset_online_cpus(struct trace_buffer *buf);
 void tracing_reset_current(int cpu);
 void tracing_reset_all_online_cpus(void);
 int tracing_open_generic(struct inode *inode, struct file *filp);
+bool tracing_is_disabled(void);
 struct dentry *trace_create_file(const char *name,
 				 umode_t mode,
 				 struct dentry *parent,
-- 
1.8.4

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