diff options
| author | Brian Vazquez <brianvv@google.com> | 2021-02-04 21:18:38 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-02-05 05:06:26 +0300 |
| commit | 0053859496baa17c7675526936677c9213bf5a0d (patch) | |
| tree | 76a83470560642f832c69a81caab936caac78a30 /include/linux/indirect_call_wrapper.h | |
| parent | 7e3ce05e7f650371061d0b9eec1e1cf74ed6fca0 (diff) | |
| download | linux-0053859496baa17c7675526936677c9213bf5a0d.tar.xz | |
net: add EXPORT_INDIRECT_CALLABLE wrapper
When a static function is annotated with INDIRECT_CALLABLE_SCOPE and
CONFIG_RETPOLINE is set, the static keyword is removed. Sometimes the
function needs to be exported but EXPORT_SYMBOL can't be used because if
CONFIG_RETPOLINE is not set, we will attempt to export a static symbol.
This patch introduces a new indirect call wrapper:
EXPORT_INDIRECT_CALLABLE. This basically does EXPORT_SYMBOL when
CONFIG_RETPOLINE is set, but does nothing when it's not.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Brian Vazquez <brianvv@google.com>
Link: https://lore.kernel.org/r/20210204181839.558951-1-brianvv@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux/indirect_call_wrapper.h')
| -rw-r--r-- | include/linux/indirect_call_wrapper.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/indirect_call_wrapper.h b/include/linux/indirect_call_wrapper.h index 54c02c84906a..a8345c8a613d 100644 --- a/include/linux/indirect_call_wrapper.h +++ b/include/linux/indirect_call_wrapper.h @@ -36,6 +36,7 @@ #define INDIRECT_CALLABLE_DECLARE(f) f #define INDIRECT_CALLABLE_SCOPE +#define EXPORT_INDIRECT_CALLABLE(f) EXPORT_SYMBOL(f) #else #define INDIRECT_CALL_1(f, f1, ...) f(__VA_ARGS__) @@ -44,6 +45,7 @@ #define INDIRECT_CALL_4(f, f4, f3, f2, f1, ...) f(__VA_ARGS__) #define INDIRECT_CALLABLE_DECLARE(f) #define INDIRECT_CALLABLE_SCOPE static +#define EXPORT_INDIRECT_CALLABLE(f) #endif /* |