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perf ftrace: Factor out function write_tracing_file_int() 

We will reuse this function later.

Signed-off-by: Changbin Du <changbin.du@gmail.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: http://lore.kernel.org/lkml/20200808023141.14227-4-changbin.du@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Changbin Du 2020-08-08 10:31:26 +08:00 committed by Arnaldo Carvalho de Melo
parent d6d81bfe42
commit 68faab0f93
1 changed files with 12 additions and 5 deletions
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17
tools/perf/builtin-ftrace.c
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@ -169,6 +169,17 @@ 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);
@ -299,8 +310,6 @@ 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;
@ -309,9 +318,7 @@ 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;