Merge tag 'probes-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull probes updates from Masami Hiramatsu:
 "Stack usage reduction for probe events:
   - Allocate string buffers from the heap for uprobe, eprobe, kprobe,
     and fprobe events to avoid stack overflow
   - Allocate traceprobe_parse_context from the heap to prevent
     potential stack overflow
   - Fix a typo in the above commit

  New features for eprobe and tprobe events:
   - Add support for arrays in eprobes
   - Support multiple tprobes on the same tracepoint

  Improve efficiency:
   - Register fprobe-events only when it is enabled to reduce overhead
   - Register tracepoints for tprobe events only when enabled to resolve
     a lock dependency

  Code Cleanup:
   - Add kerneldoc for traceprobe_parse_event_name() and
     __get_insn_slot()
   - Sort #include alphabetically in the probes code
   - Remove the unused 'mod' field from the tprobe-event
   - Clean up the entry-arg storing code in probe-events

  Selftest update
   - Enable fprobe events before checking enable_functions in selftests"

* tag 'probes-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing: trace_fprobe: Fix typo of the semicolon
  tracing: Have eprobes handle arrays
  tracing: probes: Add a kerneldoc for traceprobe_parse_event_name()
  tracing: uprobe-event: Allocate string buffers from heap
  tracing: eprobe-event: Allocate string buffers from heap
  tracing: kprobe-event: Allocate string buffers from heap
  tracing: fprobe-event: Allocate string buffers from heap
  tracing: probe: Allocate traceprobe_parse_context from heap
  tracing: probes: Sort #include alphabetically
  kprobes: Add missing kerneldoc for __get_insn_slot
  tracing: tprobe-events: Register tracepoint when enable tprobe event
  selftests: tracing: Enable fprobe events before checking enable_functions
  tracing: fprobe-events: Register fprobe-events only when it is enabled
  tracing: tprobe-events: Support multiple tprobes on the same tracepoint
  tracing: tprobe-events: Remove mod field from tprobe-event
  tracing: probe-events: Cleanup entry-arg storing code

1 files changed, 19 insertions, 11 deletions

diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc
index 73f6c6fcecab..2506f464811b 100644
--- a/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/add_remove_fprobe.tc
@@ -16,6 +16,18 @@ ocnt=`cat enabled_functions | wc -l`
 
 echo "f:myevent1 $PLACE" >> dynamic_events
 
+echo "f:myevent2 $PLACE%return" >> dynamic_events
+
+# add another event
+echo "f:myevent3 $PLACE2" >> dynamic_events
+
+grep -q myevent1 dynamic_events
+grep -q myevent2 dynamic_events
+grep -q myevent3 dynamic_events
+test -d events/fprobes/myevent1
+test -d events/fprobes/myevent2
+
+echo 1 > events/fprobes/myevent1/enable
 # Make sure the event is attached and is the only one
 grep -q $PLACE enabled_functions
 cnt=`cat enabled_functions | wc -l`
@@ -23,29 +35,22 @@ if [ $cnt -ne $((ocnt + 1)) ]; then
 	exit_fail
 fi
 
-echo "f:myevent2 $PLACE%return" >> dynamic_events
-
+echo 1 > events/fprobes/myevent2/enable
 # It should till be the only attached function
 cnt=`cat enabled_functions | wc -l`
 if [ $cnt -ne $((ocnt + 1)) ]; then
 	exit_fail
 fi
 
-# add another event
-echo "f:myevent3 $PLACE2" >> dynamic_events
-
+echo 1 > events/fprobes/myevent3/enable
+# If the function is different, the attached function should be increased
 grep -q $PLACE2 enabled_functions
 cnt=`cat enabled_functions | wc -l`
 if [ $cnt -ne $((ocnt + 2)) ]; then
 	exit_fail
 fi
 
-grep -q myevent1 dynamic_events
-grep -q myevent2 dynamic_events
-grep -q myevent3 dynamic_events
-test -d events/fprobes/myevent1
-test -d events/fprobes/myevent2
-
+echo 0 > events/fprobes/myevent2/enable
 echo "-:myevent2" >> dynamic_events
 
 grep -q myevent1 dynamic_events
@@ -57,6 +62,7 @@ if [ $cnt -ne $((ocnt + 2)) ]; then
 	exit_fail
 fi
 
+echo 0 > events/fprobes/enable
 echo > dynamic_events
 
 # Should have none left
@@ -67,12 +73,14 @@ fi
 
 echo "f:myevent4 $PLACE" >> dynamic_events
 
+echo 1 > events/fprobes/myevent4/enable
 # Should only have one enabled
 cnt=`cat enabled_functions | wc -l`
 if [ $cnt -ne $((ocnt + 1)) ]; then
 	exit_fail
 fi
 
+echo 0 > events/fprobes/enable
 echo > dynamic_events
 
 # Should have none left