Changes in loop5.c

f760d053 - libbpf: Provide barrier() and barrier_var() in bpf_helpers.h

Mon, 09 May 2022 00:41:46 +0000

libbpf: Provide barrier() and barrier_var() in bpf_helpers.hAdd barrier() and barrier_var() macros into bpf_helpers.h to be used byend users. While a bit advanced and specialized instruments, they aresometimes indispensable. Instead of requiring each user to figure outexact asm volatile incantations for themselves, provide them frombpf_helpers.h.Also remove conflicting definitions from selftests. Some tests rely onbarrier_var() definition being nothing, those will still work as libbpfdoes the #ifndef/#endif guarding for barrier() and barrier_var(),allowing users to redefine them, if necessary.Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20220509004148.1801791-8-andrii@kernel.org List of files: /linux-6.15/tools/testing/selftests/bpf/progs/loop5.c

3e689141 - selftests: Use consistent include paths for libbpf

Mon, 20 Jan 2020 13:06:45 +0000

selftests: Use consistent include paths for libbpfFix all selftests to include libbpf header files with the bpf/ prefix, tobe consistent with external users of the library. Also ensure that allincludes of exported libbpf header files (those that are exported on 'makeinstall' of the library) use bracketed includes instead of quoted.To not break the build, keep the old include path until everything has beenchanged to the new one; a subsequent patch will remove that.Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")Signed-off-by: Toke Høiland-Jørgensen Signed-off-by: Alexei Starovoitov Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/157952560568.1683545.9649335788846513446.stgit@toke.dk List of files: /linux-6.15/tools/testing/selftests/bpf/progs/loop5.c

8c303960 - selftests/bpf: add loop test 5

Fri, 02 Aug 2019 23:23:40 +0000

selftests/bpf: add loop test 5Add a test with multiple exit conditions.It's not an infinite loop only when the verifier can properly trackall math on variable 'i' through all possible ways of executing this loop.barrier()s are needed to disable llvm optimization that combines multiplebranches into fewer branches.Signed-off-by: Alexei Starovoitov Acked-by: Yonghong Song List of files: /linux-6.15/tools/testing/selftests/bpf/progs/loop5.c