diff options
| author | Josh Poimboeuf <[email protected]> | 2020-08-18 15:57:40 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2020-09-01 09:58:04 +0200 |
| commit | 563a02b0c9704f69c0364befedd451f57fe88092 (patch) | |
| tree | fdcbe3a4b47af0b9f3ded278215bb1fbea25c617 | |
| parent | 0db6e3734b130207026df1e78455fa98ca1d6f50 (diff) | |
compiler.h: Make __ADDRESSABLE() symbol truly unique
The __ADDRESSABLE() macro uses the __LINE__ macro to create a temporary
symbol which has a unique name. However, if the macro is used multiple
times from within another macro, the line number will always be the
same, resulting in duplicate symbols.
Make the temporary symbols truly unique by using __UNIQUE_ID instead of
__LINE__.
Signed-off-by: Josh Poimboeuf <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
| -rw-r--r-- | include/linux/compiler.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 6810d80acb0b..92ef163a7479 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -207,7 +207,7 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, */ #define __ADDRESSABLE(sym) \ static void * __section(.discard.addressable) __used \ - __PASTE(__addressable_##sym, __LINE__) = (void *)&sym; + __UNIQUE_ID(__PASTE(__addressable_,sym)) = (void *)&sym; /** * offset_to_ptr - convert a relative memory offset to an absolute pointer |