diff options
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/Makefile.config | 4 | ||||
| -rw-r--r-- | tools/perf/Makefile.perf | 18 | ||||
| -rw-r--r-- | tools/perf/util/bpf_skel/.gitignore | 1 | ||||
| -rw-r--r-- | tools/perf/util/bpf_skel/vmlinux/vmlinux.h (renamed from tools/perf/util/bpf_skel/vmlinux.h) | 0 |
4 files changed, 22 insertions, 1 deletions
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 9c5aa14a44cf..78411252b72a 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -680,6 +680,10 @@ ifdef BUILD_BPF_SKEL CFLAGS += -DHAVE_BPF_SKEL endif +ifndef GEN_VMLINUX_H + VMLINUX_H=$(src-perf)/util/bpf_skel/vmlinux/vmlinux.h +endif + dwarf-post-unwind := 1 dwarf-post-unwind-text := BUG diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index b1e62a621f92..a49eded5cc4f 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -132,6 +132,8 @@ include ../scripts/utilities.mak # Define EXTRA_TESTS to enable building extra tests useful mainly to perf # developers, such as: # x86 instruction decoder - new instructions test +# +# Define GEN_VMLINUX_H to generate vmlinux.h from the BTF. # As per kernel Makefile, avoid funny character set dependencies unexport LC_ALL @@ -1084,7 +1086,21 @@ $(BPFTOOL): | $(SKEL_TMP_OUT) $(Q)CFLAGS= $(MAKE) -C ../bpf/bpftool \ OUTPUT=$(SKEL_TMP_OUT)/ bootstrap -$(SKEL_TMP_OUT)/%.bpf.o: util/bpf_skel/%.bpf.c $(LIBBPF) | $(SKEL_TMP_OUT) +VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ + $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ + ../../vmlinux \ + /sys/kernel/btf/vmlinux \ + /boot/vmlinux-$(shell uname -r) +VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) + +$(SKEL_OUT)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) +ifeq ($(VMLINUX_H),) + $(QUIET_GEN)$(BPFTOOL) btf dump file $< format c > $@ +else + $(Q)cp "$(VMLINUX_H)" $@ +endif + +$(SKEL_TMP_OUT)/%.bpf.o: util/bpf_skel/%.bpf.c $(LIBBPF) $(SKEL_OUT)/vmlinux.h | $(SKEL_TMP_OUT) $(QUIET_CLANG)$(CLANG) -g -O2 -target bpf -Wall -Werror $(BPF_INCLUDE) $(TOOLS_UAPI_INCLUDE) \ -c $(filter util/bpf_skel/%.bpf.c,$^) -o $@ diff --git a/tools/perf/util/bpf_skel/.gitignore b/tools/perf/util/bpf_skel/.gitignore index 7a1c832825de..cd01455e1b53 100644 --- a/tools/perf/util/bpf_skel/.gitignore +++ b/tools/perf/util/bpf_skel/.gitignore @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only .tmp *.skel.h +vmlinux.h diff --git a/tools/perf/util/bpf_skel/vmlinux.h b/tools/perf/util/bpf_skel/vmlinux/vmlinux.h index c7ed51b0c1ef..c7ed51b0c1ef 100644 --- a/tools/perf/util/bpf_skel/vmlinux.h +++ b/tools/perf/util/bpf_skel/vmlinux/vmlinux.h |