diff options
| author | Masami Hiramatsu <mhiramat@kernel.org> | 2022-03-26 05:27:05 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-03-29 05:38:09 +0300 |
| commit | 73f9b911faa74ac5107879de05c9489c419f41bb (patch) | |
| tree | db31d9a59c0ac9b21a7aa243bb8a2d02f0525c4f /arch | |
| parent | ef8a257b4e499a979364b1f9caf25a325f6ee8b8 (diff) | |
| download | linux-73f9b911faa74ac5107879de05c9489c419f41bb.tar.xz | |
kprobes: Use rethook for kretprobe if possible
Use rethook for kretprobe function return hooking if the arch sets
CONFIG_HAVE_RETHOOK=y. In this case, CONFIG_KRETPROBE_ON_RETHOOK is
set to 'y' automatically, and the kretprobe internal data fields
switches to use rethook. If not, it continues to use kretprobe
specific function return hooks.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/164826162556.2455864.12255833167233452047.stgit@devnote2
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/Kconfig | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 84bc1de02720..33e06966f248 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -164,7 +164,13 @@ config ARCH_USE_BUILTIN_BSWAP config KRETPROBES def_bool y - depends on KPROBES && HAVE_KRETPROBES + depends on KPROBES && (HAVE_KRETPROBES || HAVE_RETHOOK) + +config KRETPROBE_ON_RETHOOK + def_bool y + depends on HAVE_RETHOOK + depends on KRETPROBES + select RETHOOK config USER_RETURN_NOTIFIER bool |