perf ftrace: Add option 'verbose' to show more info for graph tracer
Sometimes we want ftrace display more and longer information about the trace. $ sudo perf ftrace -G '*' 2) 0.979 us | mutex_unlock(); 2) 1.540 us | __fsnotify_parent(); 2) 0.433 us | fsnotify(); $ sudo perf ftrace -G '*' --graph-opts verbose 14160.770883 | 0) <...>-47814 | .... | 1.289 us | mutex_unlock(); 14160.770886 | 0) <...>-47814 | .... | 1.624 us | __fsnotify_parent(); 14160.770887 | 0) <...>-47814 | .... | 0.636 us | fsnotify(); 14160.770888 | 0) <...>-47814 | .... | 0.328 us | __sb_end_write(); 14160.770888 | 0) <...>-47814 | d... | 0.430 us | fpregs_assert_state_consistent(); 14160.770889 | 0) <...>-47814 | d... | | do_syscall_64() { 14160.770889 | 0) <...>-47814 | .... | | __x64_sys_close() { Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> 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/20200808023141.14227-13-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
parent
c81fc34e31
commit
59486fb0c8
|
@ -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
|
||||
--------
|
||||
|
|
|
@ -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),
|
||||
|
|
Loading…
Reference in New Issue