Changbin Du 85acbb21b9 tracing: Change the function format to display function names by perf ... Here is an example for this change. $ sudo perf record -e 'ftrace:function' --filter='ip==schedule' $ sudo perf report The output of perf before this patch: \# Samples: 100 of event 'ftrace:function' \# Event count (approx.): 100 \# \# Overhead Trace output \# ........ ...................................... \# 51.00% ffffffff81f6aaa0 <-- ffffffff81158e8d 29.00% ffffffff81f6aaa0 <-- ffffffff8116ccb2 8.00% ffffffff81f6aaa0 <-- ffffffff81f6f2ed 4.00% ffffffff81f6aaa0 <-- ffffffff811628db 4.00% ffffffff81f6aaa0 <-- ffffffff81f6ec5b 2.00% ffffffff81f6aaa0 <-- ffffffff81f6f21a 1.00% ffffffff81f6aaa0 <-- ffffffff811b04af 1.00% ffffffff81f6aaa0 <-- ffffffff8143ce17 After this patch: \# Samples: 36 of event 'ftrace:function' \# Event count (approx.): 36 \# \# Overhead Trace output \# ........ ............................................ \# 38.89% schedule <-- schedule_hrtimeout_range_clock 27.78% schedule <-- worker_thread 13.89% schedule <-- schedule_timeout 11.11% schedule <-- smpboot_thread_fn 5.56% schedule <-- rcu_gp_kthread 2.78% schedule <-- exit_to_usermode_loop Link: http://lkml.kernel.org/r/20190209161919.32350-1-changbin.du@gmail.com Signed-off-by: Changbin Du <changbin.du@gmail.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>		2019-02-11 14:53:43 -05:00
..
blktrace.c	blkcg: remove bio->bi_css and instead use bio->bi_blkg	2018-12-07 22:26:37 -07:00
bpf_trace.c	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
fgraph.c	tracing: Fix ftrace_graph_get_ret_stack() to use task and not current	2018-12-22 08:21:03 -05:00
ftrace_internal.h	ftrace: Create new ftrace_internal.h header	2018-12-08 20:54:06 -05:00
ftrace.c	Tracing changes for v4.21:	2018-12-31 11:46:59 -08:00
Kconfig	tracing: Use dyn_event framework for synthetic events	2018-12-08 20:54:10 -05:00
Makefile	tracing: Add unified dynamic event framework	2018-12-08 20:54:09 -05:00
power-traces.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
preemptirq_delay_test.c	tracing: Use trace_clock_local() for looping in preemptirq_delay_test.c	2018-10-17 15:35:33 -04:00
ring_buffer_benchmark.c	tracing: Add SPDX License format tags to tracing files	2018-08-16 19:08:06 -04:00
ring_buffer.c	ring-buffer: Remove unused function ring_buffer_page_len()	2019-02-06 11:58:33 -05:00
rpm-traces.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_benchmark.c	rcu: Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs()	2018-05-15 10:27:29 -07:00
trace_benchmark.h	tracing: Fix SPDX format headers to use C++ style comments	2018-08-16 19:08:06 -04:00
trace_branch.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_clock.c	tracing: Add SPDX License format tags to tracing files	2018-08-16 19:08:06 -04:00
trace_dynevent.c	tracing: Add generic event-name based remove event method	2018-12-10 12:22:44 -05:00
trace_dynevent.h	tracing: Add unified dynamic event framework	2018-12-08 20:54:09 -05:00
trace_entries.h	tracing: Change the function format to display function names by perf	2019-02-11 14:53:43 -05:00
trace_event_perf.c	trace_uprobe: support reference counter in fd-based uprobe	2018-10-10 22:14:17 -04:00
trace_events_filter_test.h	tracing: Fix SPDX format headers to use C++ style comments	2018-08-16 19:08:06 -04:00
trace_events_filter.c	tracing: Add comment to predicate_parse() about "&&" or "||"	2019-02-06 11:56:19 -05:00
trace_events_hist.c	tracing: Have the historgram use the result of str_has_prefix() for len of prefix	2018-12-22 22:52:09 -05:00
trace_events_trigger.c	tracing: Fix memory leak in set_trigger_filter()	2018-12-11 13:50:19 -05:00
trace_events.c	tracing: Use str_has_prefix() instead of using fixed sizes	2018-12-22 22:51:54 -05:00
trace_export.c	tracing: Add trigger file for trace_markers tracefs/ftrace/print	2018-05-29 08:28:53 -04:00
trace_functions_graph.c	tracing: Put a margin between flags and duration for wakeup tracers	2019-02-06 11:56:19 -05:00
trace_functions.c	tracing: Update stack trace skipping for ORC unwinder	2018-01-23 15:57:00 -05:00
trace_hwlat.c	tracing: Add SPDX License format tags to tracing files	2018-08-16 19:08:06 -04:00
trace_irqsoff.c	function_graph: Support displaying relative timestamp	2019-02-06 11:56:18 -05:00
trace_kdb.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_kprobe_selftest.c	selftest/ftrace: Move kprobe selftest function to separate compile unit	2018-07-30 18:41:04 -04:00
trace_kprobe_selftest.h	tracing: Fix SPDX format headers to use C++ style comments	2018-08-16 19:08:06 -04:00
trace_kprobe.c	tracing/kprobes: Fix NULL pointer dereference in trace_kprobe_create()	2019-01-15 11:33:45 -05:00
trace_mmiotrace.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_nop.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_output.c	tracing: Simplify printf'ing in seq_print_sym	2018-12-22 08:21:06 -05:00
trace_output.h	tracing: Fix SPDX format headers to use C++ style comments	2018-08-16 19:08:06 -04:00
trace_preemptirq.c	tracing: More reverting of "tracing: Centralize preemptirq tracepoints and unify their usage"	2018-08-10 15:12:00 -04:00
trace_printk.c	tracing: Trivia spelling fix containerof() -> container_of()	2018-09-26 12:21:00 +03:00
trace_probe_tmpl.h	tracing: probeevent: Add array type support	2018-10-10 22:19:10 -04:00
trace_probe.c	tracing: Annotate implicit fall through in parse_probe_arg()	2019-02-06 11:56:18 -05:00
trace_probe.h	tracing/kprobes: Use dyn_event framework for kprobe events	2018-12-08 20:54:09 -05:00
trace_sched_switch.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_sched_wakeup.c	tracing: Show stacktrace for wakeup tracers	2019-02-06 11:56:19 -05:00
trace_selftest_dynamic.c	ftrace: Mark function tracer test functions noinline/noclone	2018-01-23 15:57:29 -05:00
trace_selftest.c	fgraph: Add new fgraph_ops structure to enable function graph hooks	2018-12-08 20:54:07 -05:00
trace_seq.c	tracing: Add SPDX License format tags to tracing files	2018-08-16 19:08:06 -04:00
trace_stack.c	tracing: Use the return of str_has_prefix() to remove open coded numbers	2018-12-22 22:52:30 -05:00
trace_stat.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_stat.h	tracing: Fix SPDX format headers to use C++ style comments	2018-08-16 19:08:06 -04:00
trace_syscalls.c	Tracing updates for 4.15:	2017-11-17 14:58:01 -08:00
trace_uprobe.c	tracing: Consolidate trace_add/remove_event_call back to the nolock functions	2018-12-10 12:22:10 -05:00
trace.c	Tracing changes for v4.21:	2018-12-31 11:46:59 -08:00
trace.h	function_graph: Support displaying relative timestamp	2019-02-06 11:56:18 -05:00
tracing_map.c	tracing: Add SPDX License format tags to tracing files	2018-08-16 19:08:06 -04:00
tracing_map.h	tracing: Fix SPDX format headers to use C++ style comments	2018-08-16 19:08:06 -04:00