Define const_*() variants of the non-atomic bitops to be used when the input arguments are compile-time constants, so that the compiler will be always able to resolve those to compile-time constants as well. Those are mostly direct aliases for generic_*() with one exception for const_test_bit(): the original one is declared atomic-safe and thus doesn't discard the `volatile` qualifier, so in order to let optimize code, define it separately disregarding the qualifier. Add them to the compile-time type checks as well just in case.
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| @@ -37,6 +37,7 @@ extern unsigned long __sw_hweight64(__u64 w); · 36 unmodified lines | ||
| 37 | 37 | /* Check that the bitops prototypes are sane */ |
| 38 | 38 | #define __check_bitop_pr(name) \ |
| 39 | 39 | static_assert(__same_type(arch_##name, generic_##name) && \ |
| 40 | + __same_type(const_##name, generic_##name) && \ | |
| 40 | 41 | __same_type(name, generic_##name)) |
| 41 | 42 | |
| 42 | 43 | __check_bitop_pr(__set_bit); |