From f1bdebbb67bd21d7c5dfc42f313f2f54002440b8 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 19 Oct 2022 08:44:17 -0400 Subject: perf bpf: Fix build with libbpf 0.7.0 by checking if bpf_program__set_insns() is available During the transition to libbpf 1.0 some functions that perf used were deprecated and finally removed from libbpf, so bpf_program__set_insns() was introduced for perf to continue to use its bpf loader. But when build with LIBBPF_DYNAMIC=1 we now need to check if that function is available so that perf can build with older libbpf versions, even if the end result is emitting a warning to the user that the use of the perf BPF loader requires a newer libbpf, since bpf_program__set_insns() touches libbpf objects internal state. This affects only 'perf trace' when using bpf C code or pre-compiled bytecode as an event. Noticed on RHEL9, that has libbpf 0.7.0, where bpf_program__set_insns() isn't available. Signed-off-by: Arnaldo Carvalho de Melo --- tools/build/feature/Makefile | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools/build/feature/Makefile') diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 04b07ff88234..690fe97be190 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -63,6 +63,7 @@ FILES= \ test-libbpf-bpf_map_create.bin \ test-libbpf-bpf_object__next_program.bin \ test-libbpf-bpf_object__next_map.bin \ + test-libbpf-bpf_program__set_insns.bin \ test-libbpf-btf__raw_data.bin \ test-get_cpuid.bin \ test-sdt.bin \ @@ -316,6 +317,9 @@ $(OUTPUT)test-libbpf-bpf_object__next_program.bin: $(OUTPUT)test-libbpf-bpf_object__next_map.bin: $(BUILD) -lbpf +$(OUTPUT)test-libbpf-bpf_program__set_insns.bin: + $(BUILD) -lbpf + $(OUTPUT)test-libbpf-btf__raw_data.bin: $(BUILD) -lbpf -- cgit v1.2.3