Changbin Du 02a8a256f5 tracing: Fix missing return symbol in function_graph output ... commit 1fe4293f4b8de75824935f8d8e9a99c7fc6873da upstream. The function_graph tracer does not show the interrupt return marker for the leaf entry. On leaf entries, we see an unbalanced interrupt marker (the interrupt was entered, but nevern left). Before: 1) | SyS_write() { 1) | __fdget_pos() { 1) 0.061 us | __fget_light(); 1) 0.289 us | } 1) | vfs_write() { 1) 0.049 us | rw_verify_area(); 1) + 15.424 us | __vfs_write(); 1) ==========> | 1) 6.003 us | smp_apic_timer_interrupt(); 1) 0.055 us | __fsnotify_parent(); 1) 0.073 us | fsnotify(); 1) + 23.665 us | } 1) + 24.501 us | } After: 0) | SyS_write() { 0) | __fdget_pos() { 0) 0.052 us | __fget_light(); 0) 0.328 us | } 0) | vfs_write() { 0) 0.057 us | rw_verify_area(); 0) | __vfs_write() { 0) ==========> | 0) 8.548 us | smp_apic_timer_interrupt(); 0) <========== | 0) + 36.507 us | } /* __vfs_write */ 0) 0.049 us | __fsnotify_parent(); 0) 0.066 us | fsnotify(); 0) + 50.064 us | } 0) + 50.952 us | } Link: http://lkml.kernel.org/r/1517413729-20411-1-git-send-email-changbin.du@intel.com Cc: stable@vger.kernel.org Fixes: f8b755ac8e ("tracing/function-graph-tracer: Output arrows signal on hardirq call/return") Signed-off-by: Changbin Du <changbin.du@intel.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-07-11 16:03:48 +02:00
..
blktrace.c	blktrace: fix unlocked registration of tracepoints	2018-02-25 11:03:35 +01:00
bpf_trace.c	bpf: make tracing helpers gpl only	2015-10-26 21:53:34 -07:00
ftrace.c	ftrace: Remove incorrect setting of glob search field	2018-02-16 20:09:47 +01:00
Kconfig	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-11-10 18:11:41 -08:00
Makefile	Makefile: Mute warning for __builtin_return_address(>0) for tracing only	2016-09-30 10:18:35 +02:00
power-traces.c	PM / sleep: export suspend_resume trace event	2015-01-30 02:10:41 +01:00
ring_buffer.c	ring-buffer: Mask out the info bits when returning buffer page length	2018-01-02 20:33:22 +01:00
ring_buffer_benchmark.c	ring_buffer: Remove unneeded smp_wmb() before wakeup of reader benchmark	2015-11-03 16:19:02 -05:00
rpm-traces.c	PM / Runtime: Introduce trace points for tracing rpm_* functions	2011-09-27 22:53:27 +02:00
trace.c	tracing: Fix crash when it fails to alloc ring buffer	2018-01-02 20:33:22 +01:00
trace.h	tracing: Remove unused ftrace_cpu_disabled per cpu variable	2015-11-07 13:25:14 -05:00
trace_benchmark.c	tracing: Only benchmark the time tracepoints take if tracing is on	2015-11-02 13:34:58 -05:00
trace_benchmark.h	tracing: Add tracepoint benchmark tracepoint	2014-05-29 22:49:54 -04:00
trace_branch.c	tracing: Remove {start,stop}_branch_trace	2015-10-21 10:10:09 -04:00
trace_clock.c	tracing: Export tracing clock functions	2015-05-12 15:56:57 -04:00
trace_entries.h	tracing: %pF is only for function pointers	2015-03-25 08:57:22 -04:00
trace_event_perf.c	treewide: Remove old email address	2015-11-23 09:44:58 +01:00
trace_events.c	tracing: Fix converting enum's from the map in trace_event_eval_update()	2018-01-23 19:50:16 +01:00
trace_events_filter.c	tracing: Fix regex_match_front() to not over compare the test string	2018-05-16 10:06:51 +02:00
trace_events_filter_test.h	tracing/filter: Add startup tests for events filter	2011-08-19 14:35:59 -04:00
trace_events_trigger.c	tracing: Fix crash when freeing instances with event triggers	2018-06-06 16:46:21 +02:00
trace_export.c	tracing: ftrace_event_is_function() can return boolean	2015-11-02 14:28:05 -05:00
trace_functions.c	tracing/trivial: Fix typos and make an int into a bool	2014-11-20 10:05:36 -05:00
trace_functions_graph.c	tracing: Fix missing return symbol in function_graph output	2018-07-11 16:03:48 +02:00
trace_irqsoff.c	tracing: Have preempt(irqs)off trace preempt disabled functions	2016-04-12 09:08:59 -07:00
trace_kdb.c	tracing: Move trace_flags from global to a trace_array field	2015-09-30 15:22:55 -04:00
trace_kprobe.c	tracing: probeevent: Fix to support minus offset from symbol	2018-03-28 18:40:15 +02:00
trace_mmiotrace.c	tracing: Pass trace_array into trace_buffer_unlock_commit()	2015-09-25 17:38:44 -04:00
trace_nop.c	tracing: Remove unneeded includes of debugfs.h and fs.h	2015-01-22 11:19:48 -05:00
trace_output.c	tracing: Move trace_flags from global to a trace_array field	2015-09-30 15:22:55 -04:00
trace_output.h	tracing: Turn seq_print_user_ip() into a static function	2015-09-28 10:16:12 -04:00
trace_printk.c	tracing: Handle NULL formats in hold_module_trace_bprintk_format()	2016-07-27 09:47:32 -07:00
trace_probe.c	tracing: probeevent: Fix to support minus offset from symbol	2018-03-28 18:40:15 +02:00
trace_probe.h	tracing: probeevent: Fix to support minus offset from symbol	2018-03-28 18:40:15 +02:00
trace_sched_switch.c	sched/core: Fix trace_sched_switch()	2015-10-06 17:08:15 +02:00
trace_sched_wakeup.c	Most of the changes are clean ups and small fixes. Some of them have	2015-11-06 13:30:20 -08:00
trace_selftest.c	ftrace: Fix selftest goto location on error	2017-09-27 11:00:16 +02:00
trace_selftest_dynamic.c
trace_seq.c	tracing: use %*pb[l] to print bitmaps including cpumasks and nodemasks	2015-02-13 21:21:37 -08:00
trace_stack.c	tracing/stacktrace: Show entire trace if passed in function not found	2016-02-17 12:30:57 -08:00
trace_stat.c	tracing: Convert the tracing facility over to use tracefs	2015-02-03 12:48:41 -05:00
trace_stat.h
trace_syscalls.c	tracing: Move trace_flags from global to a trace_array field	2015-09-30 15:22:55 -04:00
trace_uprobe.c	tracing/uprobe_event: Fix strncpy corner case	2018-05-16 10:06:52 +02:00