From aeb709c767aeca996e6011133e4f7bdb2a4af652 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Wed, 30 Sep 2026 09:59:20 +0000 Subject: selftests/bpf: Add a test for objects stuck in free_by_rcu_ttrace Delete all elements of BPF_F_NO_PREALLOC hash map in one batch. The first free_bulk() starts RCU tasks trace GP and the rest of the elements are freed while it's in flight. Wait for call_rcu_ttrace_in_progress to clear in bpf_mem_cache of every cpu and check that free_by_rcu_ttrace and waiting_for_gp_ttrace lists are empty. Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20260930095920.601738-4-alexei.starovoitov@gmail.com Signed-off-by: Kumar Kartikeya Dwivedi --- rust/macros/export.rs | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 rust/macros/export.rs (limited to 'rust/macros/export.rs') diff --git a/rust/macros/export.rs b/rust/macros/export.rs new file mode 100644 index 000000000..6d53521f6 --- /dev/null +++ b/rust/macros/export.rs @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 + +use proc_macro2::TokenStream; +use quote::quote; + +/// Please see [`crate::export`] for documentation. +pub(crate) fn export(f: syn::ItemFn) -> TokenStream { + let name = &f.sig.ident; + + quote! { + // This verifies that the function has the same signature as the declaration generated by + // bindgen. It makes use of the fact that all branches of an if/else must have the same + // type. + const _: () = { + if true { + ::kernel::bindings::#name + } else { + #name + }; + }; + + #[no_mangle] + #f + } +} -- cgit v1.3.1