diff options
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/Documentation/perf-ftrace.txt | 1 | ||||
| -rw-r--r-- | tools/perf/builtin-ftrace.c | 29 |
2 files changed, 29 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 37ea3ea97922..a2056aaf2ece 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -106,6 +106,7 @@ OPTIONS List of options allowed to set: nosleep-time - Measure on-CPU time only for function_graph tracer. noirqs - Ignore functions that happen inside interrupt. + verbose - Show process names, PIDs, timestamps, etc. SEE ALSO -------- diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index d1241febe143..8ee5287bd84a 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -47,6 +47,7 @@ struct perf_ftrace { int func_irq_info; int graph_nosleep_time; int graph_noirqs; + int graph_verbose; }; struct filter_entry { @@ -210,6 +211,9 @@ static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused) write_tracing_option_file("func_stack_trace", "0"); write_tracing_option_file("sleep-time", "1"); 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("latency-format", "0"); write_tracing_option_file("irq-info", "0"); } @@ -425,6 +429,23 @@ static int set_tracing_funcgraph_irqs(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_funcgraph_verbose(struct perf_ftrace *ftrace) +{ + if (!ftrace->graph_verbose) + return 0; + + if (write_tracing_option_file("funcgraph-proc", "1") < 0) + return -1; + + if (write_tracing_option_file("funcgraph-abstime", "1") < 0) + return -1; + + if (write_tracing_option_file("latency-format", "1") < 0) + return -1; + + return 0; +} + static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) { char *trace_file; @@ -519,6 +540,11 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) goto out_reset; } + if (set_tracing_funcgraph_verbose(ftrace) < 0) { + pr_err("failed to set tracing option funcgraph-proc/funcgraph-abstime\n"); + goto out_reset; + } + if (write_tracing_file("current_tracer", ftrace->tracer) < 0) { pr_err("failed to set current_tracer to %s\n", ftrace->tracer); goto out_reset; @@ -700,6 +726,7 @@ static int parse_graph_tracer_opts(const struct option *opt, struct sublevel_option graph_tracer_opts[] = { { .name = "nosleep-time", .value_ptr = &ftrace->graph_nosleep_time }, { .name = "noirqs", .value_ptr = &ftrace->graph_noirqs }, + { .name = "verbose", .value_ptr = &ftrace->graph_verbose }, { .name = NULL, } }; @@ -771,7 +798,7 @@ int cmd_ftrace(int argc, const char **argv) OPT_INTEGER('D', "graph-depth", &ftrace.graph_depth, "Max depth for function graph tracer"), OPT_CALLBACK(0, "graph-opts", &ftrace, "options", - "graph tracer options, available options: nosleep-time,noirqs", + "graph tracer options, available options: nosleep-time,noirqs,verbose", parse_graph_tracer_opts), OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", "size of per cpu buffer", parse_buffer_size), |