From: Changbin Du <changbin.du@gmail.com>
To: Jiri Olsa <jolsa@redhat.com>, Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Namhyung Kim <namhyung@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org, Changbin Du <changbin.du@gmail.com>
Subject: [PATCH v8 12/18] perf ftrace: add option 'verbose' to show more info for graph tracer
Date: Sat, 8 Aug 2020 10:31:35 +0800 [thread overview]
Message-ID: <20200808023141.14227-13-changbin.du@gmail.com> (raw)
In-Reply-To: <20200808023141.14227-1-changbin.du@gmail.com>
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>
---
tools/perf/Documentation/perf-ftrace.txt | 1 +
tools/perf/builtin-ftrace.c | 29 +++++++++++++++++++++++-
2 files changed, 29 insertions(+), 1 deletion(-)
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),
--
2.25.1
next prev parent reply other threads:[~2020-08-08 2:39 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-08 2:31 [PATCH v8 00/18] [PATCH v7 00/18] perf: ftrace enhancement Changbin Du
2020-08-08 2:31 ` [PATCH v8 01/18] perf ftrace: select function/function_graph tracer automatically Changbin Du
2020-08-08 2:31 ` [PATCH v8 02/18] perf ftrace: add option '-F/--funcs' to list available functions Changbin Du
2020-08-14 11:35 ` Arnaldo Carvalho de Melo
2020-08-20 15:18 ` Changbin Du
2020-08-08 2:31 ` [PATCH v8 03/18] perf ftrace: factor out function write_tracing_file_int() Changbin Du
2020-08-08 2:31 ` [PATCH v8 04/18] perf ftrace: add option '-m/--buffer-size' to set per-cpu buffer size Changbin Du
2020-08-14 11:53 ` Arnaldo Carvalho de Melo
2020-08-14 12:12 ` Arnaldo Carvalho de Melo
2020-08-14 12:58 ` Arnaldo Carvalho de Melo
2020-08-08 2:31 ` [PATCH v8 05/18] perf ftrace: show trace column header Changbin Du
2020-08-14 11:56 ` Arnaldo Carvalho de Melo
2020-08-14 11:57 ` Arnaldo Carvalho de Melo
2020-08-08 2:31 ` [PATCH v8 06/18] perf ftrace: add option '--inherit' to trace children processes Changbin Du
2020-08-14 12:12 ` Arnaldo Carvalho de Melo
2020-08-08 2:31 ` [PATCH v8 07/18] perf: util: add general function to parse sublevel options Changbin Du
2020-08-08 2:31 ` [PATCH v8 08/18] perf ftrace: add support for tracing option 'func_stack_trace' Changbin Du
2020-08-14 12:24 ` Arnaldo Carvalho de Melo
2020-08-20 15:15 ` Changbin Du
2020-08-08 2:31 ` [PATCH v8 09/18] perf ftrace: add support for trace option sleep-time Changbin Du
2020-08-14 12:26 ` Arnaldo Carvalho de Melo
2020-08-08 2:31 ` [PATCH v8 10/18] perf ftrace: add support for trace option funcgraph-irqs Changbin Du
2020-08-14 12:27 ` Arnaldo Carvalho de Melo
2020-08-08 2:31 ` [PATCH v8 11/18] perf ftrace: add support for tracing option 'irq-info' Changbin Du
2020-08-14 12:28 ` Arnaldo Carvalho de Melo
2020-08-20 15:09 ` Changbin Du
2020-08-08 2:31 ` Changbin Du [this message]
2020-08-08 2:31 ` [PATCH v8 13/18] perf ftrace: add support for trace option tracing_thresh Changbin Du
2020-08-14 12:33 ` Arnaldo Carvalho de Melo
2020-08-20 15:08 ` Changbin Du
2020-08-08 2:31 ` [PATCH v8 14/18] perf: ftrace: allow set graph depth by '--graph-opts' Changbin Du
2020-08-08 2:31 ` [PATCH v8 15/18] perf ftrace: add option -D/--delay to delay tracing Changbin Du
2020-08-08 2:31 ` [PATCH v8 16/18] perf ftrace: add option --tid to filter by thread id Changbin Du
2020-08-08 2:31 ` [PATCH v8 17/18] perf: ftrace: Add set_tracing_options() to set all trace options Changbin Du
2020-08-08 2:31 ` [PATCH v8 18/18] perf ftrace: add change log Changbin Du
2020-08-14 12:38 ` [PATCH v8 00/18] [PATCH v7 00/18] perf: ftrace enhancement Arnaldo Carvalho de Melo
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