From: Andrii Nakryiko <andrii@kernel.org>
To: <bpf@vger.kernel.org>, <ast@kernel.org>, <daniel@iogearbox.net>
Cc: <andrii@kernel.org>, <kernel-team@fb.com>
Subject: [PATCH bpf-next 7/9] samples/bpf: clean up samples/bpf build failes
Date: Wed, 1 Dec 2021 15:28:22 -0800 [thread overview]
Message-ID: <20211201232824.3166325-8-andrii@kernel.org> (raw)
In-Reply-To: <20211201232824.3166325-1-andrii@kernel.org>
Remove xdp_samples_user.o rule redefinition which generates Makefile
warning and instead override TPROGS_CFLAGS. This seems to work fine when
building inside selftests/bpf.
That was one big head-scratcher before I found that generic
Makefile.target hid this surprising specialization for for xdp_samples_user.o.
Main change is to use actual locally installed libbpf headers.
Also drop printk macro re-definition (not even used!).
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---
samples/bpf/Makefile | 13 ++++++++++++-
samples/bpf/Makefile.target | 11 -----------
samples/bpf/hbm_kern.h | 2 --
samples/bpf/lwt_len_hist_kern.c | 7 -------
4 files changed, 12 insertions(+), 21 deletions(-)
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index a886dff1ba89..6ae62b1dc938 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -328,7 +328,7 @@ $(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF)
$(src)/*.c: verify_target_bpf $(LIBBPF)
libbpf_hdrs: $(LIBBPF)
-$(obj)/$(TRACE_HELPERS): | libbpf_hdrs
+$(obj)/$(TRACE_HELPERS) $(obj)/$(CGROUP_HELPERS) $(obj)/$(XDP_SAMPLE): | libbpf_hdrs
.PHONY: libbpf_hdrs
@@ -343,6 +343,17 @@ $(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm_kern.h
$(obj)/hbm.o: $(src)/hbm.h
$(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm_kern.h
+# Override includes for xdp_sample_user.o because $(srctree)/usr/include in
+# TPROGS_CFLAGS causes conflicts
+XDP_SAMPLE_CFLAGS += -Wall -O2 -lm \
+ -I$(src)/../../tools/include \
+ -I$(src)/../../tools/include/uapi \
+ -I$(LIBBPF_INCLUDE) \
+ -I$(src)/../../tools/testing/selftests/bpf
+
+$(obj)/$(XDP_SAMPLE): TPROGS_CFLAGS = $(XDP_SAMPLE_CFLAGS)
+$(obj)/$(XDP_SAMPLE): $(src)/xdp_sample_user.h $(src)/xdp_sample_shared.h
+
-include $(BPF_SAMPLES_PATH)/Makefile.target
VMLINUX_BTF_PATHS ?= $(abspath $(if $(O),$(O)/vmlinux)) \
diff --git a/samples/bpf/Makefile.target b/samples/bpf/Makefile.target
index 5a368affa038..7621f55e2947 100644
--- a/samples/bpf/Makefile.target
+++ b/samples/bpf/Makefile.target
@@ -73,14 +73,3 @@ quiet_cmd_tprog-cobjs = CC $@
cmd_tprog-cobjs = $(CC) $(tprogc_flags) -c -o $@ $<
$(tprog-cobjs): $(obj)/%.o: $(src)/%.c FORCE
$(call if_changed_dep,tprog-cobjs)
-
-# Override includes for xdp_sample_user.o because $(srctree)/usr/include in
-# TPROGS_CFLAGS causes conflicts
-XDP_SAMPLE_CFLAGS += -Wall -O2 -lm \
- -I./tools/include \
- -I./tools/include/uapi \
- -I./tools/lib \
- -I./tools/testing/selftests/bpf
-$(obj)/xdp_sample_user.o: $(src)/xdp_sample_user.c \
- $(src)/xdp_sample_user.h $(src)/xdp_sample_shared.h
- $(CC) $(XDP_SAMPLE_CFLAGS) -c -o $@ $<
diff --git a/samples/bpf/hbm_kern.h b/samples/bpf/hbm_kern.h
index 722b3fadb467..1752a46a2b05 100644
--- a/samples/bpf/hbm_kern.h
+++ b/samples/bpf/hbm_kern.h
@@ -9,8 +9,6 @@
* Include file for sample Host Bandwidth Manager (HBM) BPF programs
*/
#define KBUILD_MODNAME "foo"
-#include <stddef.h>
-#include <stdbool.h>
#include <uapi/linux/bpf.h>
#include <uapi/linux/if_ether.h>
#include <uapi/linux/if_packet.h>
diff --git a/samples/bpf/lwt_len_hist_kern.c b/samples/bpf/lwt_len_hist_kern.c
index 9ed63e10e170..1fa14c54963a 100644
--- a/samples/bpf/lwt_len_hist_kern.c
+++ b/samples/bpf/lwt_len_hist_kern.c
@@ -16,13 +16,6 @@
#include <uapi/linux/in.h>
#include <bpf/bpf_helpers.h>
-# define printk(fmt, ...) \
- ({ \
- char ____fmt[] = fmt; \
- bpf_trace_printk(____fmt, sizeof(____fmt), \
- ##__VA_ARGS__); \
- })
-
struct bpf_elf_map {
__u32 type;
__u32 size_key;
--
2.30.2
next prev parent reply other threads:[~2021-12-01 23:29 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-01 23:28 [PATCH bpf-next 0/9] Deprecate bpf_prog_load_xattr() API Andrii Nakryiko
2021-12-01 23:28 ` [PATCH bpf-next 1/9] libbpf: use __u32 fields in bpf_map_create_opts Andrii Nakryiko
2021-12-02 23:28 ` Alexei Starovoitov
2021-12-02 23:40 ` Andrii Nakryiko
2021-12-01 23:28 ` [PATCH bpf-next 2/9] libbpf: add API to get/set log_level at per-program level Andrii Nakryiko
2021-12-01 23:28 ` [PATCH bpf-next 3/9] bpftool: migrate off of deprecated bpf_create_map_xattr() API Andrii Nakryiko
2021-12-01 23:28 ` [PATCH bpf-next 4/9] selftests/bpf: remove recently reintroduced legacy btf__dedup() use Andrii Nakryiko
2021-12-01 23:28 ` [PATCH bpf-next 5/9] selftests/bpf: mute xdpxceiver.c's deprecation warnings Andrii Nakryiko
2021-12-01 23:28 ` [PATCH bpf-next 6/9] selftests/bpf: remove all the uses of deprecated bpf_prog_load_xattr() Andrii Nakryiko
2021-12-01 23:28 ` Andrii Nakryiko [this message]
2021-12-01 23:28 ` [PATCH bpf-next 8/9] samples/bpf: get rid of deprecated libbpf API uses Andrii Nakryiko
2021-12-01 23:28 ` [PATCH bpf-next 9/9] libbpf: deprecate bpf_prog_load_xattr() API Andrii Nakryiko
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