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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-10-19 15:44:17 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-10-25 23:40:48 +0300 |
| commit | f1bdebbb67bd21d7c5dfc42f313f2f54002440b8 (patch) | |
| tree | b161f1bdc327d729c0b1b5a94f5a80cdf823b6a6 /tools/perf/Makefile.config | |
| parent | 409fb6bdd6eaf64c2da174b48b30ae032a9d7554 (diff) | |
| download | linux-f1bdebbb67bd21d7c5dfc42f313f2f54002440b8.tar.xz | |
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 <acme@redhat.com>
Diffstat (limited to 'tools/perf/Makefile.config')
| -rw-r--r-- | tools/perf/Makefile.config | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 6fd4b1384b97..898226ea8cad 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -588,6 +588,10 @@ ifndef NO_LIBELF ifeq ($(feature-libbpf-bpf_object__next_map), 1) CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_MAP endif + $(call feature_check,libbpf-bpf_program__set_insns) + ifeq ($(feature-libbpf-bpf_program__set_insns), 1) + CFLAGS += -DHAVE_LIBBPF_BPF_PROGRAM__SET_INSNS + endif $(call feature_check,libbpf-btf__raw_data) ifeq ($(feature-libbpf-btf__raw_data), 1) CFLAGS += -DHAVE_LIBBPF_BTF__RAW_DATA @@ -604,6 +608,7 @@ ifndef NO_LIBELF CFLAGS += -DHAVE_LIBBPF_BPF_PROG_LOAD CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_PROGRAM CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_MAP + CFLAGS += -DHAVE_LIBBPF_BPF_PROGRAM__SET_INSNS CFLAGS += -DHAVE_LIBBPF_BTF__RAW_DATA CFLAGS += -DHAVE_LIBBPF_BPF_MAP_CREATE endif |