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Subject[PATCH 1/3] trace: fix sparse warnings: make symbols static
Date
Impact: make global variables and a global function static

The function '__trace_userstack' does not seem to have a caller, so it
is commented out.

Fix this sparse warnings:
kernel/trace/trace.c:82:5: warning: symbol 'tracing_disabled' was not declared. Should it be static?
kernel/trace/trace.c:600:10: warning: symbol 'trace_record_cmdline_disabled' was not declared. Should it be static?
kernel/trace/trace.c:957:6: warning: symbol '__trace_userstack' was not declared. Should it be static?
kernel/trace/trace.c:1694:5: warning: symbol 'tracing_release' was not declared. Should it be static?

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
---
kernel/trace/trace.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index ef4dbac..0e7c84f 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -79,7 +79,7 @@ static int dummy_set_flag(u32 old_flags, u32 bit, int set)
* of the tracer is successful. But that is the only place that sets
* this back to zero.
*/
-int tracing_disabled = 1;
+static int tracing_disabled = 1;

static DEFINE_PER_CPU(local_t, ftrace_cpu_disabled);

@@ -597,7 +597,7 @@ static int cmdline_idx;
static DEFINE_SPINLOCK(trace_cmdline_lock);

/* temporary disable recording */
-atomic_t trace_record_cmdline_disabled __read_mostly;
+static atomic_t trace_record_cmdline_disabled __read_mostly;

static void trace_init_cmdlines(void)
{
@@ -954,10 +954,12 @@ static void ftrace_trace_userstack(struct trace_array *tr,
#endif
}

-void __trace_userstack(struct trace_array *tr, unsigned long flags)
+#ifdef UNUSED
+static void __trace_userstack(struct trace_array *tr, unsigned long flags)
{
ftrace_trace_userstack(tr, flags, preempt_count());
}
+#endif /* UNUSED */

static void
ftrace_trace_special(void *__tr,
@@ -1691,7 +1693,7 @@ int tracing_open_generic(struct inode *inode, struct file *filp)
return 0;
}

-int tracing_release(struct inode *inode, struct file *file)
+static int tracing_release(struct inode *inode, struct file *file)
{
struct seq_file *m = (struct seq_file *)file->private_data;
struct trace_iterator *iter = m->private;


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