diff options
author | Ian Rogers <irogers@google.com> | 2023-01-16 02:01:14 +0100 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-03-14 12:29:45 +0100 |
commit | 76a97cf2e169851ff8e3fd9d27028168eff81e37 (patch) | |
tree | 280bd94d29a2fc63f355cdc19385984084f58d8b | |
parent | tools build: Pass libbpf feature only if libbpf 1.0+ (diff) | |
download | linux-76a97cf2e169851ff8e3fd9d27028168eff81e37.tar.xz linux-76a97cf2e169851ff8e3fd9d27028168eff81e37.zip |
perf build: Remove libbpf pre-1.0 feature tests
The feature tests were necessary for libbpf pre-1.0, but as the libbpf
implies at least 1.0 we can remove these now.
Committer notes:
Modified tools/perf/Makefile.config to better reflect the reason for
failure when the libbpf present is < 1.0 and LIBBPF_DYNAMIC=1 was asked
for.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andres Freund <andres@anarazel.de>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Christy Lee <christylee@fb.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Monnet <quentin@isovalent.com>
Cc: Roberto Sassu <roberto.sassu@huawei.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20230116010115.490713-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r-- | tools/build/feature/Makefile | 7 | ||||
-rw-r--r-- | tools/build/feature/test-libbpf-bpf_map_create.c | 8 | ||||
-rw-r--r-- | tools/build/feature/test-libbpf-bpf_object__next_map.c | 8 | ||||
-rw-r--r-- | tools/build/feature/test-libbpf-bpf_object__next_program.c | 8 | ||||
-rw-r--r-- | tools/build/feature/test-libbpf-bpf_prog_load.c | 9 | ||||
-rw-r--r-- | tools/build/feature/test-libbpf-bpf_program__set_insns.c | 8 | ||||
-rw-r--r-- | tools/build/feature/test-libbpf-btf__load_from_kernel_by_id.c | 8 | ||||
-rw-r--r-- | tools/build/feature/test-libbpf-btf__raw_data.c | 8 | ||||
-rw-r--r-- | tools/perf/Makefile.config | 50 |
9 files changed, 11 insertions, 103 deletions
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 690fe97be190..dc9323e01e42 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -58,13 +58,6 @@ FILES= \ test-lzma.bin \ test-bpf.bin \ test-libbpf.bin \ - test-libbpf-btf__load_from_kernel_by_id.bin \ - test-libbpf-bpf_prog_load.bin \ - 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 \ test-cxx.bin \ diff --git a/tools/build/feature/test-libbpf-bpf_map_create.c b/tools/build/feature/test-libbpf-bpf_map_create.c deleted file mode 100644 index b9f550e332c8..000000000000 --- a/tools/build/feature/test-libbpf-bpf_map_create.c +++ /dev/null @@ -1,8 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <bpf/bpf.h> - -int main(void) -{ - return bpf_map_create(0 /* map_type */, NULL /* map_name */, 0, /* key_size */, - 0 /* value_size */, 0 /* max_entries */, NULL /* opts */); -} diff --git a/tools/build/feature/test-libbpf-bpf_object__next_map.c b/tools/build/feature/test-libbpf-bpf_object__next_map.c deleted file mode 100644 index 64adb519e97e..000000000000 --- a/tools/build/feature/test-libbpf-bpf_object__next_map.c +++ /dev/null @@ -1,8 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <bpf/libbpf.h> - -int main(void) -{ - bpf_object__next_map(NULL /* obj */, NULL /* prev */); - return 0; -} diff --git a/tools/build/feature/test-libbpf-bpf_object__next_program.c b/tools/build/feature/test-libbpf-bpf_object__next_program.c deleted file mode 100644 index 8bf4fd26b545..000000000000 --- a/tools/build/feature/test-libbpf-bpf_object__next_program.c +++ /dev/null @@ -1,8 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <bpf/libbpf.h> - -int main(void) -{ - bpf_object__next_program(NULL /* obj */, NULL /* prev */); - return 0; -} diff --git a/tools/build/feature/test-libbpf-bpf_prog_load.c b/tools/build/feature/test-libbpf-bpf_prog_load.c deleted file mode 100644 index 47f516d63ebc..000000000000 --- a/tools/build/feature/test-libbpf-bpf_prog_load.c +++ /dev/null @@ -1,9 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <bpf/bpf.h> - -int main(void) -{ - return bpf_prog_load(0 /* prog_type */, NULL /* prog_name */, - NULL /* license */, NULL /* insns */, - 0 /* insn_cnt */, NULL /* opts */); -} diff --git a/tools/build/feature/test-libbpf-bpf_program__set_insns.c b/tools/build/feature/test-libbpf-bpf_program__set_insns.c deleted file mode 100644 index f3b7f18c8f49..000000000000 --- a/tools/build/feature/test-libbpf-bpf_program__set_insns.c +++ /dev/null @@ -1,8 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <bpf/libbpf.h> - -int main(void) -{ - bpf_program__set_insns(NULL /* prog */, NULL /* new_insns */, 0 /* new_insn_cnt */); - return 0; -} diff --git a/tools/build/feature/test-libbpf-btf__load_from_kernel_by_id.c b/tools/build/feature/test-libbpf-btf__load_from_kernel_by_id.c deleted file mode 100644 index a17647f7d5a4..000000000000 --- a/tools/build/feature/test-libbpf-btf__load_from_kernel_by_id.c +++ /dev/null @@ -1,8 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <bpf/btf.h> - -int main(void) -{ - btf__load_from_kernel_by_id(20151128); - return 0; -} diff --git a/tools/build/feature/test-libbpf-btf__raw_data.c b/tools/build/feature/test-libbpf-btf__raw_data.c deleted file mode 100644 index 57da31dd7581..000000000000 --- a/tools/build/feature/test-libbpf-btf__raw_data.c +++ /dev/null @@ -1,8 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <bpf/btf.h> - -int main(void) -{ - btf__raw_data(NULL /* btf_ro */, NULL /* size */); - return 0; -} diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 3519a0139026..b715cd4f43f4 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -565,54 +565,26 @@ ifndef NO_LIBELF # detecting libbpf without LIBBPF_DYNAMIC, so make VF=1 shows libbpf detection status $(call feature_check,libbpf) + + # Feature test requires libbpf 1.0 so we can assume the following: + CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID + CFLAGS += -DHAVE_LIBBPF_BPF_PROG_LOAD + CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_PROGRAM + CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_MAP + CFLAGS += -DHAVE_LIBBPF_BPF_PROGRAM__SET_INSNS + CFLAGS += -DHAVE_LIBBPF_BTF__RAW_DATA + CFLAGS += -DHAVE_LIBBPF_BPF_MAP_CREATE + ifdef LIBBPF_DYNAMIC ifeq ($(feature-libbpf), 1) EXTLIBS += -lbpf $(call detected,CONFIG_LIBBPF_DYNAMIC) - - $(call feature_check,libbpf-btf__load_from_kernel_by_id) - ifeq ($(feature-libbpf-btf__load_from_kernel_by_id), 1) - CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID - endif - $(call feature_check,libbpf-bpf_prog_load) - ifeq ($(feature-libbpf-bpf_prog_load), 1) - CFLAGS += -DHAVE_LIBBPF_BPF_PROG_LOAD - endif - $(call feature_check,libbpf-bpf_object__next_program) - ifeq ($(feature-libbpf-bpf_object__next_program), 1) - CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_PROGRAM - endif - $(call feature_check,libbpf-bpf_object__next_map) - ifeq ($(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 - else - dummy := $(error Error: libbpf devel library needs to be >= 0.8.0 to build with LIBBPF_DYNAMIC, update or build statically with the version that comes with the kernel sources); - endif - $(call feature_check,libbpf-btf__raw_data) - ifeq ($(feature-libbpf-btf__raw_data), 1) - CFLAGS += -DHAVE_LIBBPF_BTF__RAW_DATA - endif - $(call feature_check,libbpf-bpf_map_create) - ifeq ($(feature-libbpf-bpf_map_create), 1) - CFLAGS += -DHAVE_LIBBPF_BPF_MAP_CREATE - endif else - dummy := $(error Error: No libbpf devel library found, please install libbpf-devel); + dummy := $(error Error: No libbpf devel library found or older than v1.0, please install/update libbpf-devel); endif else # Libbpf will be built as a static library from tools/lib/bpf. LIBBPF_STATIC := 1 - CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID - 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 endif |