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| author | Yonghong Song <yhs@fb.com> | 2020-05-13 21:02:23 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-05-13 22:30:50 +0300 |
| commit | 03421a92f5627430d23ed95df55958e04848f184 (patch) | |
| tree | eb5cdde87004c269a26a1e25fb0dd2d8264e98ee /samples/bpf/offwaketime_kern.c | |
| parent | 3c32cc1bceba8a1755dc35cd97516f6c67856844 (diff) | |
| download | linux-03421a92f5627430d23ed95df55958e04848f184.tar.xz | |
samples/bpf: Remove compiler warnings
Commit 5fbc220862fc ("tools/libpf: Add offsetof/container_of macro
in bpf_helpers.h") added macros offsetof/container_of to
bpf_helpers.h. Unfortunately, it caused compilation warnings
below for a few samples/bpf programs:
In file included from /data/users/yhs/work/net-next/samples/bpf/sockex2_kern.c:4:
In file included from /data/users/yhs/work/net-next/include/uapi/linux/in.h:24:
In file included from /data/users/yhs/work/net-next/include/linux/socket.h:8:
In file included from /data/users/yhs/work/net-next/include/linux/uio.h:8:
/data/users/yhs/work/net-next/include/linux/kernel.h:992:9: warning: 'container_of' macro redefined [-Wmacro-redefined]
^
/data/users/yhs/work/net-next/tools/lib/bpf/bpf_helpers.h:46:9: note: previous definition is here
^
1 warning generated.
CLANG-bpf samples/bpf/sockex3_kern.o
In all these cases, bpf_helpers.h is included first, followed by other
standard headers. The macro container_of is defined unconditionally
in kernel.h, causing the compiler warning.
The fix is to move bpf_helpers.h after standard headers.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200513180223.2949987-1-yhs@fb.com
Diffstat (limited to 'samples/bpf/offwaketime_kern.c')
| -rw-r--r-- | samples/bpf/offwaketime_kern.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/samples/bpf/offwaketime_kern.c b/samples/bpf/offwaketime_kern.c index c4ec10dbfc3b..d459f73412a4 100644 --- a/samples/bpf/offwaketime_kern.c +++ b/samples/bpf/offwaketime_kern.c @@ -5,12 +5,12 @@ * License as published by the Free Software Foundation. */ #include <uapi/linux/bpf.h> -#include <bpf/bpf_helpers.h> -#include <bpf/bpf_tracing.h> #include <uapi/linux/ptrace.h> #include <uapi/linux/perf_event.h> #include <linux/version.h> #include <linux/sched.h> +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_tracing.h> #define _(P) ({typeof(P) val; bpf_probe_read(&val, sizeof(val), &P); val;}) |