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Subject[PATCH v4 04/17] perf ftrace: factor out function write_tracing_file_int()
Date
We will reuse this function later.

Signed-off-by: Changbin Du <changbin.du@gmail.com>
---
tools/perf/builtin-ftrace.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 1188b82c6541..342861a1d152 100644
--- a/tools/perf/builtin-ftrace.c
+++ b/tools/perf/builtin-ftrace.c
@@ -165,6 +165,17 @@ static int read_tracing_file_to_stdout(const char *name)
return ret;
}

+static int write_tracing_file_int(const char *name, int value)
+{
+ char buf[16];
+
+ snprintf(buf, sizeof(buf), "%d", value);
+ if (write_tracing_file(name, buf) < 0)
+ return -1;
+
+ return 0;
+}
+
static int reset_tracing_cpu(void);
static void reset_tracing_filters(void);

@@ -295,8 +306,6 @@ static void reset_tracing_filters(void)

static int set_tracing_depth(struct perf_ftrace *ftrace)
{
- char buf[16];
-
if (ftrace->graph_depth == 0)
return 0;

@@ -305,9 +314,7 @@ static int set_tracing_depth(struct perf_ftrace *ftrace)
return -1;
}

- snprintf(buf, sizeof(buf), "%d", ftrace->graph_depth);
-
- if (write_tracing_file("max_graph_depth", buf) < 0)
+ if (write_tracing_file_int("max_graph_depth", ftrace->graph_depth) < 0)
return -1;

return 0;
--
2.25.1
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