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tools: runqslower: Build and use lightweight bootstrap version of bpftool

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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.

Suggested-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Pu Lehui <pulehui@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220714024612.944071-3-pulehui@huawei.com
This commit is contained in:
Pu Lehui 2022-07-14 10:46:11 +08:00 committed by Andrii Nakryiko
parent 2e4966288c
commit 3a2a58c447
1 changed files with 3 additions and 4 deletions
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7
tools/bpf/runqslower/Makefile
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@ -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 +86,5 @@ $(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
$(DEFAULT_BPFTOOL): $(BPFOBJ) | $(BPFTOOL_OUTPUT)
$(Q)$(MAKE) $(submake_extras) -C ../bpftool OUTPUT=$(BPFTOOL_OUTPUT) \
ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD)
$(DEFAULT_BPFTOOL): | $(BPFTOOL_OUTPUT)
$(Q)$(MAKE) $(submake_extras) -C ../bpftool OUTPUT=$(BPFTOOL_OUTPUT) bootstrap