On Mon, Apr 20, 2020 at 5:05 PM Yoshiki Komachi <komachi.yoshiki@xxxxxxxxx> wrote: > > The following error was shown when a bpf program was compiled without > vmlinux.h auto-generated from BTF: > > # clang -I./linux/tools/lib/ -I/lib/modules/$(uname -r)/build/include/ \ > -O2 -Wall -target bpf -emit-llvm -c bpf_prog.c -o bpf_prog.bc > ... > In file included from linux/tools/lib/bpf/bpf_helpers.h:5: > linux/tools/lib/bpf/bpf_helper_defs.h:56:82: error: unknown type name '__u64' > ... > > It seems that bpf programs are intended for being built together with > the vmlinux.h (which will have all the __u64 and other typedefs). But > users may mistakenly think "include <linux/types.h>" is missing > because the vmlinux.h is not common for non-bpf developers. IMO, an > explicit comment therefore should be added to bpf_helpers.h as this > patch shows. > > Signed-off-by: Yoshiki Komachi <komachi.yoshiki@xxxxxxxxx> Applied. Thanks
