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Date:   Thu, 16 Jan 2020 14:22:15 +0100
From:   Toke Høiland-Jørgensen <>
To:     Alexei Starovoitov <>
Cc:     Daniel Borkmann <>,
        Martin KaFai Lau <>,
        Song Liu <>, Yonghong Song <>,
        Andrii Nakryiko <>,
        Doug Ledford <>,
        Jason Gunthorpe <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
        Jesper Dangaard Brouer <>,
        John Fastabend <>,
        Peter Zijlstra <>,
        Ingo Molnar <>,
        Arnaldo Carvalho de Melo <>,
        Mark Rutland <>,
        Alexander Shishkin <>,
        Jiri Olsa <>,
        Namhyung Kim <>,
        Shuah Khan <>,,,,,,
Subject: [PATCH bpf-next v3 03/11] selftests: Pass VMLINUX_BTF to runqslower

From: Toke Høiland-Jørgensen <>

Add a VMLINUX_BTF variable with the locally-built path when calling the
runqslower Makefile from selftests. This makes sure a simple 'make'
invocation in the selftests dir works even when there is no BTF information
for the running kernel. Because of the previous changes to the runqslower
Makefile, if no locally-built vmlinux file exists, the wildcard search will
fall back to the pre-defined paths (and error out if they don't exist).

Fixes: 3a0d3092a4ed ("selftests/bpf: Build runqslower from selftests")
Signed-off-by: Toke Høiland-Jørgensen <>
 tools/testing/selftests/bpf/Makefile |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 246d09ffb296..30d0e7a813d2 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -127,7 +127,7 @@ $(OUTPUT)/test_stub.o: test_stub.c
 .PHONY: $(OUTPUT)/runqslower
 $(OUTPUT)/runqslower: force
 	$(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower	      \
-		    OUTPUT=$(CURDIR)/tools/
+		    OUTPUT=$(CURDIR)/tools/ VMLINUX_BTF=$(abspath ../../../../vmlinux)
 BPFOBJ := $(OUTPUT)/libbpf.a

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