[PATCH bpf-next v1] selftests/bpf: Fix wrong binary in Makefile log output

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Make log output incorrectly shows 'test_maps' as the binary name for every
'CLNG-BPF' build step, apparently picking up the last value defined for the
$(TRUNNER_BINARY) variable. Update the 'CLANG_BPF_BUILD_RULE' variants to
fix this confusing output.

Current output:
  CLNG-BPF [test_maps] access_map_in_map.bpf.o
  GEN-SKEL [test_progs] access_map_in_map.skel.h
  ...
  CLNG-BPF [test_maps] access_map_in_map.bpf.o
  GEN-SKEL [test_progs-no_alu32] access_map_in_map.skel.h
  ...
  CLNG-BPF [test_maps] access_map_in_map.bpf.o
  GEN-SKEL [test_progs-cpuv4] access_map_in_map.skel.h

After fix:
  CLNG-BPF [test_progs] access_map_in_map.bpf.o
  GEN-SKEL [test_progs] access_map_in_map.skel.h
  ...
  CLNG-BPF [test_progs-no_alu32] access_map_in_map.bpf.o
  GEN-SKEL [test_progs-no_alu32] access_map_in_map.skel.h
  ...
  CLNG-BPF [test_progs-cpuv4] access_map_in_map.bpf.o
  GEN-SKEL [test_progs-cpuv4] access_map_in_map.skel.h

Fixes: a5d0c26a2784 ("selftests/bpf: Add a cpuv4 test runner for cpu=v4 testing")
Fixes: 89ad7420b25c ("selftests/bpf: Drop the need for LLVM's llc")
Signed-off-by: Tony Ambardar <tony.ambardar@xxxxxxxxx>
---
 tools/testing/selftests/bpf/Makefile | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 0b4bfbc0ef68..67921e3367dd 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -425,27 +425,28 @@ $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
 $(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h
 
 # Build BPF object using Clang
-# $1 - input .c file
-# $2 - output .o file
-# $3 - CFLAGS
+# $1 - binary name
+# $2 - input .c file
+# $3 - output .o file
+# $4 - CFLAGS
 define CLANG_BPF_BUILD_RULE
-	$(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
-	$(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2
+	$(call msg,CLNG-BPF,$1,$3)
+	$(Q)$(CLANG) $4 -O2 --target=bpf -c $2 -mcpu=v3 -o $3
 endef
 # Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
 define CLANG_NOALU32_BPF_BUILD_RULE
-	$(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
-	$(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2
+	$(call msg,CLNG-BPF,$1,$3)
+	$(Q)$(CLANG) $4 -O2 --target=bpf -c $2 -mcpu=v2 -o $3
 endef
 # Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4
 define CLANG_CPUV4_BPF_BUILD_RULE
-	$(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
-	$(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v4 -o $2
+	$(call msg,CLNG-BPF,$1,$3)
+	$(Q)$(CLANG) $4 -O2 --target=bpf -c $2 -mcpu=v4 -o $3
 endef
 # Build BPF object using GCC
 define GCC_BPF_BUILD_RULE
-	$(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
-	$(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -O2 -c $1 -o $2
+	$(call msg,GCC-BPF,$1,$3)
+	$(Q)$(BPF_GCC) $4 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -O2 -c $2 -o $3
 endef
 
 SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
@@ -534,7 +535,7 @@ $(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o:				\
 		     $(wildcard $(BPFDIR)/bpf_*.h)			\
 		     $(wildcard $(BPFDIR)/*.bpf.h)			\
 		     | $(TRUNNER_OUTPUT) $$(BPFOBJ)
-	$$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@,			\
+	$$(call $(TRUNNER_BPF_BUILD_RULE),$(TRUNNER_BINARY),$$<,$$@,	\
 					  $(TRUNNER_BPF_CFLAGS)         \
 					  $$($$<-CFLAGS)		\
 					  $$($$<-$2-CFLAGS))
-- 
2.34.1





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