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authorArnaldo Carvalho de Melo <acme@redhat.com>2023-05-07 00:06:43 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2023-05-07 00:06:43 +0300
commitc3e6df97fa25ff310c3d5e7f1644248e072e3cb0 (patch)
tree8874570f276a37d2808b91e8d11413729832d535
parent6c73f819b6b6d6f052e8dbe3f66f0693554ddf48 (diff)
downloadlinux-c3e6df97fa25ff310c3d5e7f1644248e072e3cb0.tar.xz
Revert "perf build: Warn for BPF skeletons if endian mismatches"
This reverts commit 51924ae69eea5bc90b5da525fbcf4bbd5f8551b3. We need to better polish building with BPF skels, so revert back to making it an experimental feature that has to be explicitely enabled using BUILD_BPF_SKEL=1. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/Makefile.config17
1 files changed, 7 insertions, 10 deletions
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 71442c54c25f..16bea51f0bcd 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -663,17 +663,14 @@ ifndef NO_BPF_SKEL
$(call feature_check,clang-bpf-co-re)
ifeq ($(feature-clang-bpf-co-re), 0)
dummy := $(error: ERROR: BPF skeletons unsupported. clang too old/not installed or build with NO_BPF_SKEL=1.)
+ else
+ ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
+ dummy := $(error: ERROR: BPF skeletons unsupported. BPF skeleton support requires libbpf or build with NO_BPF_SKEL=1.)
+ else
+ $(call detected,CONFIG_PERF_BPF_SKEL)
+ CFLAGS += -DHAVE_BPF_SKEL
+ endif
endif
- ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
- dummy := $(error: ERROR: BPF skeletons unsupported. BPF skeleton support requires libbpf or build with NO_BPF_SKEL=1.)
- endif
- host_byte_order=$(echo ""|$(HOSTCC) -dM -E -|grep __BYTE_ORDER__)
- target_byte_order=$(echo ""|$(CC) -dM -E -|grep __BYTE_ORDER__)
- ifneq ($(host_byte_order), $(target_byte_order))
- $(warning Possibly mismatched host and target endianness may break BPF skeletons)
- endif
- $(call detected,CONFIG_PERF_BPF_SKEL)
- CFLAGS += -DHAVE_BPF_SKEL
endif
dwarf-post-unwind := 1