diff options
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/Documentation/perf-ftrace.txt | 4 | ||||
| -rw-r--r-- | tools/perf/builtin-ftrace.c | 60 | ||||
| -rw-r--r-- | tools/perf/util/ftrace.h | 4 |
3 files changed, 67 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 914457853bcf..3f3808e513fe 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -123,6 +123,10 @@ OPTIONS for 'perf ftrace trace' --graph-opts:: List of options allowed to set: + - args - Show function arguments. + - retval - Show function return value. + - retval-hex - Show function return value in hexadecimal format. + - retaddr - Show function return address. - 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. diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index e1f2f3fb1b08..6b6eec65f93f 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -301,6 +301,10 @@ static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused) 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("funcgraph-args", "0"); + write_tracing_option_file("funcgraph-retval", "0"); + write_tracing_option_file("funcgraph-retval-hex", "0"); + write_tracing_option_file("funcgraph-retaddr", "0"); write_tracing_option_file("latency-format", "0"); write_tracing_option_file("irq-info", "0"); } @@ -542,6 +546,41 @@ static int set_tracing_sleep_time(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_funcgraph_args(struct perf_ftrace *ftrace) +{ + if (ftrace->graph_args) { + if (write_tracing_option_file("funcgraph-args", "1") < 0) + return -1; + } + + return 0; +} + +static int set_tracing_funcgraph_retval(struct perf_ftrace *ftrace) +{ + if (ftrace->graph_retval || ftrace->graph_retval_hex) { + if (write_tracing_option_file("funcgraph-retval", "1") < 0) + return -1; + } + + if (ftrace->graph_retval_hex) { + if (write_tracing_option_file("funcgraph-retval-hex", "1") < 0) + return -1; + } + + return 0; +} + +static int set_tracing_funcgraph_retaddr(struct perf_ftrace *ftrace) +{ + if (ftrace->graph_retaddr) { + if (write_tracing_option_file("funcgraph-retaddr", "1") < 0) + return -1; + } + + return 0; +} + static int set_tracing_funcgraph_irqs(struct perf_ftrace *ftrace) { if (!ftrace->graph_noirqs) @@ -642,6 +681,21 @@ static int set_tracing_options(struct perf_ftrace *ftrace) return -1; } + if (set_tracing_funcgraph_args(ftrace) < 0) { + pr_err("failed to set tracing option funcgraph-args\n"); + return -1; + } + + if (set_tracing_funcgraph_retval(ftrace) < 0) { + pr_err("failed to set tracing option funcgraph-retval\n"); + return -1; + } + + if (set_tracing_funcgraph_retaddr(ftrace) < 0) { + pr_err("failed to set tracing option funcgraph-retaddr\n"); + return -1; + } + if (set_tracing_funcgraph_irqs(ftrace) < 0) { pr_err("failed to set tracing option funcgraph-irqs\n"); return -1; @@ -1634,6 +1688,10 @@ static int parse_graph_tracer_opts(const struct option *opt, int ret; struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value; struct sublevel_option graph_tracer_opts[] = { + { .name = "args", .value_ptr = &ftrace->graph_args }, + { .name = "retval", .value_ptr = &ftrace->graph_retval }, + { .name = "retval-hex", .value_ptr = &ftrace->graph_retval_hex }, + { .name = "retaddr", .value_ptr = &ftrace->graph_retaddr }, { .name = "nosleep-time", .value_ptr = &ftrace->graph_nosleep_time }, { .name = "noirqs", .value_ptr = &ftrace->graph_noirqs }, { .name = "verbose", .value_ptr = &ftrace->graph_verbose }, @@ -1725,7 +1783,7 @@ int cmd_ftrace(int argc, const char **argv) OPT_CALLBACK('g', "nograph-funcs", &ftrace.nograph_funcs, "func", "Set nograph filter on given functions", parse_filter_func), OPT_CALLBACK(0, "graph-opts", &ftrace, "options", - "Graph tracer options, available options: nosleep-time,noirqs,verbose,thresh=<n>,depth=<n>", + "Graph tracer options, available options: args,retval,retval-hex,retaddr,nosleep-time,noirqs,verbose,thresh=<n>,depth=<n>", parse_graph_tracer_opts), OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size", "Size of per cpu buffer, needs to use a B, K, M or G suffix.", parse_buffer_size), diff --git a/tools/perf/util/ftrace.h b/tools/perf/util/ftrace.h index 3f5094ac5908..950f2efafad2 100644 --- a/tools/perf/util/ftrace.h +++ b/tools/perf/util/ftrace.h @@ -30,6 +30,10 @@ struct perf_ftrace { int graph_depth; int func_stack_trace; int func_irq_info; + int graph_args; + int graph_retval; + int graph_retval_hex; + int graph_retaddr; int graph_nosleep_time; int graph_noirqs; int graph_verbose; |