Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1566629

[PATCH 23/23] perf ftrace: Make 'function_graph' be the default tracer

Show all headers | View raw

From: Arnaldo Carvalho de Melo <acme@redhat.com>

So that we can suppress the '-t function_graph' and get a more compact command
line:

  # perf ftrace usleep 123456 | grep raw_spin_lock | sort -k2 -nr | head -5
  2)   0.555 us    |                _raw_spin_lock();
  2)   0.516 us    |          _raw_spin_lock();
  2)   0.410 us    |          _raw_spin_lock_irq();
  2)   0.374 us    |                        _raw_spin_lock_irqsave();
  #

Tested-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jeremy Eder <jeder@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-ss9xgx5htpxcv86x42pnh3m6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/builtin-ftrace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index c320ae25c8e6..d05658d2b8f1 100644
--- a/tools/perf/builtin-ftrace.c
+++ b/tools/perf/builtin-ftrace.c
@@ -202,6 +202,7 @@ int cmd_ftrace(int argc, const char **argv, const char *prefix __maybe_unused)
 {
 	int ret;
 	struct perf_ftrace ftrace = {
+		.tracer = "function_graph",
 		.target = { .uid = UINT_MAX, },
 	};
 	const char * const ftrace_usage[] = {
@@ -211,7 +212,7 @@ int cmd_ftrace(int argc, const char **argv, const char *prefix __maybe_unused)
 	};
 	const struct option ftrace_options[] = {
 	OPT_STRING('t', "tracer", &ftrace.tracer, "tracer",
-		   "tracer to use: function_graph or function"),
+		   "tracer to use: function_graph(default) or function"),
 	OPT_INCR('v', "verbose", &verbose,
 		 "be more verbose"),
 	OPT_END()
-- 
2.9.3

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[GIT PULL 00/23] perf/core improvements and fixes Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 19/23] perf tools: Propagate perf_config() errors Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 15/23] tools lib bpf: Define prog_type fns with macro Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 10/23] perf script: Add "brstackasm" output for branch stacks Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 11/23] perf probe: Fix wrong register name for arm64 Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 09/23] perf script: Add support for printing assembler Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 18/23] perf scripting perl: Do not die() when not founding event for a type Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 21/23] perf util: Add more debug message on failure path Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 08/23] perf tools: Add disassembler for x86 using the XED library Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 14/23] tools lib bpf: Fix map offsets in relocation Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 02/23] perf hists browser: Put hist_entry folding logic into single function Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 22/23] perf ftrace: Introduce new 'ftrace' tool Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 01/23] perf unwind: Fix looking up dwarf unwind stack info Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 13/23] perf probe: Delete an unnecessary assignment in try_to_find_absolute_address() Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 23/23] perf ftrace: Make 'function_graph' be the default tracer Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 04/23] perf c2c report: Display Total records column in offset view Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100
  [PATCH 06/23] perf tools: Add probing for the XED disassembler library Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-01-25 15:00 +0100

csiph-web