diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2024-11-28 10:39:01 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2024-12-02 12:01:43 +0100 |
| commit | c837de3810982cd41cd70e5170da1931439f025c (patch) | |
| tree | e0dad45f10e8c9d2db3ac00dfd2499fdd474b8c0 /include/linux/compiler.h | |
| parent | bb8170067470cc7af28e4386e600b1e0a6a8956a (diff) | |
unreachable: Unify
Since barrier_before_unreachable() is empty for !GCC it is trivial to
unify the two definitions. Less is more.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://lore.kernel.org/r/20241128094311.924381359@infradead.org
Diffstat (limited to 'include/linux/compiler.h')
| -rw-r--r-- | include/linux/compiler.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 469a64dd6495..7be80897a62f 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -141,12 +141,16 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, #define __annotate_jump_table #endif /* CONFIG_OBJTOOL */ -#ifndef unreachable -# define unreachable() do { \ +/* + * Mark a position in code as unreachable. This can be used to + * suppress control flow warnings after asm blocks that transfer + * control elsewhere. + */ +#define unreachable() do { \ annotate_unreachable(); \ + barrier_before_unreachable(); \ __builtin_unreachable(); \ } while (0) -#endif /* * KENTRY - kernel entry point |