diff options
Diffstat (limited to 'tools/perf/builtin-ftrace.c')
| -rw-r--r-- | tools/perf/builtin-ftrace.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index eb30c8eca488..33c52ebda2fd 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -228,6 +228,7 @@ static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused) write_tracing_option_file("funcgraph-irqs", "1"); write_tracing_option_file("funcgraph-proc", "0"); write_tracing_option_file("funcgraph-abstime", "0"); + write_tracing_option_file("funcgraph-tail", "0"); write_tracing_option_file("latency-format", "0"); write_tracing_option_file("irq-info", "0"); } @@ -464,6 +465,17 @@ static int set_tracing_funcgraph_verbose(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_funcgraph_tail(struct perf_ftrace *ftrace) +{ + if (!ftrace->graph_tail) + return 0; + + if (write_tracing_option_file("funcgraph-tail", "1") < 0) + return -1; + + return 0; +} + static int set_tracing_thresh(struct perf_ftrace *ftrace) { int ret; @@ -540,6 +552,11 @@ static int set_tracing_options(struct perf_ftrace *ftrace) return -1; } + if (set_tracing_funcgraph_tail(ftrace) < 0) { + pr_err("failed to set tracing option funcgraph-tail\n"); + return -1; + } + return 0; } @@ -1099,6 +1116,7 @@ static int parse_graph_tracer_opts(const struct option *opt, { .name = "verbose", .value_ptr = &ftrace->graph_verbose }, { .name = "thresh", .value_ptr = &ftrace->graph_thresh }, { .name = "depth", .value_ptr = &ftrace->graph_depth }, + { .name = "tail", .value_ptr = &ftrace->graph_tail }, { .name = NULL, } }; |