static_call: Add inline static call infrastructure

[mirror_ubuntu-jammy-kernel.git] / include / linux / static_call_types.h

diff --git a/include/linux/static_call_types.h b/include/linux/static_call_types.h
index 5ed249dc47d304001c8ec705175bdd723a02002b..408d345d83e1c80c80f385cd38ab4ec039a21774 100644 (file)
--- a/include/linux/static_call_types.h
+++ b/include/linux/static_call_types.h
@@ -2,14 +2,27 @@
 #ifndef _STATIC_CALL_TYPES_H
 #define _STATIC_CALL_TYPES_H
 
+#include <linux/types.h>
 #include <linux/stringify.h>
 
 #define STATIC_CALL_KEY_PREFIX         __SCK__
+#define STATIC_CALL_KEY_PREFIX_STR     __stringify(STATIC_CALL_KEY_PREFIX)
+#define STATIC_CALL_KEY_PREFIX_LEN     (sizeof(STATIC_CALL_KEY_PREFIX_STR) - 1)
 #define STATIC_CALL_KEY(name)          __PASTE(STATIC_CALL_KEY_PREFIX, name)
 
 #define STATIC_CALL_TRAMP_PREFIX       __SCT__
 #define STATIC_CALL_TRAMP_PREFIX_STR   __stringify(STATIC_CALL_TRAMP_PREFIX)
+#define STATIC_CALL_TRAMP_PREFIX_LEN   (sizeof(STATIC_CALL_TRAMP_PREFIX_STR) - 1)
 #define STATIC_CALL_TRAMP(name)                __PASTE(STATIC_CALL_TRAMP_PREFIX, name)
 #define STATIC_CALL_TRAMP_STR(name)    __stringify(STATIC_CALL_TRAMP(name))
 
+/*
+ * The static call site table needs to be created by external tooling (objtool
+ * or a compiler plugin).
+ */
+struct static_call_site {
+       s32 addr;
+       s32 key;
+};
+
 #endif /* _STATIC_CALL_TYPES_H */