diff options
Diffstat (limited to 'kernel/trace/Kconfig')
| -rw-r--r-- | kernel/trace/Kconfig | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index e15fadbe5dfb..4d4eb15cc7fd 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -456,6 +456,26 @@ config KPROBE_EVENTS This option is also required by perf-probe subcommand of perf tools. If you want to use perf tools, this option is strongly recommended. +config KPROBE_EVENTS_ON_NOTRACE + bool "Do NOT protect notrace function from kprobe events" + depends on KPROBE_EVENTS + depends on KPROBES_ON_FTRACE + default n + help + This is only for the developers who want to debug ftrace itself + using kprobe events. + + If kprobes can use ftrace instead of breakpoint, ftrace related + functions are protected from kprobe-events to prevent an infinit + recursion or any unexpected execution path which leads to a kernel + crash. + + This option disables such protection and allows you to put kprobe + events on ftrace functions for debugging ftrace by itself. + Note that this might let you shoot yourself in the foot. + + If unsure, say N. + config UPROBE_EVENTS bool "Enable uprobes-based dynamic events" depends on ARCH_SUPPORTS_UPROBES |