From: Sven Schnelle <svens@stackframe.org>
Date: Wed, 5 Jun 2019 20:32:21 +0000 (+0200)
Subject: compiler.h: add CC_USING_PATCHABLE_FUNCTION_ENTRY
X-Git-Tag: v5.3-rc1~159^2~2
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=2809b392a62ae307da058a52d451b2fc3ce4de7e;p=linux.git

compiler.h: add CC_USING_PATCHABLE_FUNCTION_ENTRY

This can be used for architectures implementing dynamic
ftrace via -fpatchable-function-entry.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Helge Deller <deller@gmx.de>
---

diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index 19e58b9138a0..095d55c3834d 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -112,6 +112,8 @@ struct ftrace_likely_data {
 
 #if defined(CC_USING_HOTPATCH)
 #define notrace			__attribute__((hotpatch(0, 0)))
+#elif defined(CC_USING_PATCHABLE_FUNCTION_ENTRY)
+#define notrace			__attribute__((patchable_function_entry(0, 0)))
 #else
 #define notrace			__attribute__((__no_instrument_function__))
 #endif