On Mon, Jun 12, 2023 at 11:39 AM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > --- a/include/linux/compiler_attributes.h > +++ b/include/linux/compiler_attributes.h > @@ -77,6 +77,12 @@ > #define __attribute_const__ __attribute__((__const__)) > > /* > + * gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-cleanup-variable-attribute > + * clang: https://clang.llvm.org/docs/AttributeReference.html#cleanup > + */ > +#define __cleanup(func) __attribute__((__cleanup__(func))) > + > +/* > * Optional: only supported since gcc >= 9 > * Optional: not supported by clang > * `cleanup` goes before `const`, but apart from that, for compiler attributes: Acked-by: Miguel Ojeda <ojeda@xxxxxxxxxx> Thanks for bringing RAII/SBRM to the kernel! Rust also behaves like the `__cleanup__` attribute, e.g. iterating on a loop destroys and constructs the variables defined inside the loop. Also breaking to an outer label/scope. By the way, maybe some of the macros in `cleanup.h` read a bit better applying `clang-format` to it. Cheers, Miguel
