tools/runqslower use bpftool for vmlinux.h, skeleton, and static linking only. So we can use lightweight bootstrap version of bpftool to handle these, and it will be faster. Signed-off-by: Pu Lehui <pulehui@xxxxxxxxxx> Suggested-by: Andrii Nakryiko <andrii@xxxxxxxxxx> --- tools/bpf/runqslower/Makefile | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/tools/bpf/runqslower/Makefile b/tools/bpf/runqslower/Makefile index da6de16a3dfb..8900c74f29e2 100644 --- a/tools/bpf/runqslower/Makefile +++ b/tools/bpf/runqslower/Makefile @@ -4,7 +4,7 @@ include ../../scripts/Makefile.include OUTPUT ?= $(abspath .output)/ BPFTOOL_OUTPUT := $(OUTPUT)bpftool/ -DEFAULT_BPFTOOL := $(BPFTOOL_OUTPUT)bpftool +DEFAULT_BPFTOOL := $(BPFTOOL_OUTPUT)bootstrap/bpftool BPFTOOL ?= $(DEFAULT_BPFTOOL) LIBBPF_SRC := $(abspath ../../lib/bpf) BPFOBJ_OUTPUT := $(OUTPUT)libbpf/ @@ -86,6 +86,12 @@ $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(BPFOBJ_OU $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(BPFOBJ_OUTPUT) \ DESTDIR=$(BPFOBJ_OUTPUT) prefix= $(abspath $@) install_headers +ifeq ($(CROSS_COMPILE),) $(DEFAULT_BPFTOOL): $(BPFOBJ) | $(BPFTOOL_OUTPUT) $(Q)$(MAKE) $(submake_extras) -C ../bpftool OUTPUT=$(BPFTOOL_OUTPUT) \ - ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) + LIBBPF_BOOTSTRAP_OUTPUT=$(BPFOBJ_OUTPUT) \ + LIBBPF_BOOTSTRAP_DESTDIR=$(BPF_DESTDIR) bootstrap +else +$(DEFAULT_BPFTOOL): | $(BPFTOOL_OUTPUT) + $(Q)$(MAKE) $(submake_extras) -C ../bpftool OUTPUT=$(BPFTOOL_OUTPUT) bootstrap +endif -- 2.25.1
