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 --- include/asm-generic/tlbflush.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 include/asm-generic/tlbflush.h (limited to 'include/asm-generic/tlbflush.h') diff --git a/include/asm-generic/tlbflush.h b/include/asm-generic/tlbflush.h new file mode 100644 index 000000000..dc2669289 --- /dev/null +++ b/include/asm-generic/tlbflush.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_GENERIC_TLBFLUSH_H +#define __ASM_GENERIC_TLBFLUSH_H +/* + * This is a dummy tlbflush implementation that can be used on all + * nommu architectures. + * If you have an MMU, you need to write your own functions. + */ +#ifdef CONFIG_MMU +#error need to implement an architecture specific asm/tlbflush.h +#endif + +#include + +static inline void flush_tlb_mm(struct mm_struct *mm) +{ + BUG(); +} + + +#endif /* __ASM_GENERIC_TLBFLUSH_H */ -- cgit v1.3.1