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| author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2019-06-07 10:11:16 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2019-06-10 23:37:20 -0700 |
| commit | 0ed3cc4abc10dc71f67a40e0c4b2c5c85e6aec82 (patch) | |
| tree | a813b11c1f53e77e3de330c93443fdeb148b0389 /samples | |
| parent | ab1b3a957de3fa92e75b3ba7bd842263ecebf495 (diff) | |
| download | linux-0-day-0ed3cc4abc10dc71f67a40e0c4b2c5c85e6aec82.tar.gz linux-0-day-0ed3cc4abc10dc71f67a40e0c4b2c5c85e6aec82.tar.xz | |
samples: bpf: don't run probes at the local make stage
Quentin reports that commit 07c3bbdb1a9b ("samples: bpf: print
a warning about headers_install") is producing the false
positive when make is invoked locally, from the samples/bpf/
directory.
When make is run locally it hits the "all" target, which
will recursively invoke make through the full build system.
Speed up the "local" run which doesn't actually build anything,
and avoid false positives by skipping all the probes if not in
kbuild environment (cover both the new warning and the BTF
probes).
Reported-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/bpf/Makefile | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index 4074a66a70ca9..9eb5d733f575d 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -206,6 +206,8 @@ HOSTCC = $(CROSS_COMPILE)gcc CLANG_ARCH_ARGS = -target $(ARCH) endif +# Don't evaluate probes and warnings if we need to run make recursively +ifneq ($(src),) HDR_PROBE := $(shell echo "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \ $(HOSTCC) $(KBUILD_HOSTCFLAGS) -x c - -o /dev/null 2>/dev/null && \ echo okay) @@ -232,6 +234,7 @@ ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PROBE),$(BTF_OBJCOPY_PROBE)),) DWARF2BTF = y endif endif +endif # Trick to allow make to be run from this directory all: |