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| author | Changbin Du <changbin.du@gmail.com> | 2020-08-08 04:31:26 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-08-14 13:37:05 +0200 |
| commit | 68faab0f934d83d374b3d696d861d8502641fa19 (patch) | |
| tree | da7d81aa5b4a948fe623ef4726ae4e4e6b2763e1 /tools | |
| parent | perf ftrace: Add option '-F/--funcs' to list available functions (diff) | |
| download | linux-68faab0f934d83d374b3d696d861d8502641fa19.tar.xz linux-68faab0f934d83d374b3d696d861d8502641fa19.zip | |
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>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-ftrace.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 1ebf71ecc1a8..4b3fcee5725a 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -169,6 +169,17 @@ out: 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; |