[PATCH v1] bpf: Add missing force_checksrc macro

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According to the documentation, when building a kernel with the C=2
parameter, all source files should be checked. But this does not happen
for the kernel/bpf/ directory.

$ touch kernel/bpf/core.o
$ make C=2 CHECK=true kernel/bpf/core.o

Outputs:

  CHECK   scripts/mod/empty.c
  CALL    scripts/checksyscalls.sh
  DESCEND objtool
  INSTALL libsubcmd_headers
  CC      kernel/bpf/core.o

As can be seen the compilation is done, but CHECK is not executed. This
happens because kernel/bpf/Makefile has defined its own rule for
compilation and forgotten the macro that does the check.

Signed-off-by: Alexey Gladkov <legion@xxxxxxxxxx>
---
 kernel/bpf/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/bpf/Makefile b/kernel/bpf/Makefile
index 0291eef9ce92..f0ba6bf73bb6 100644
--- a/kernel/bpf/Makefile
+++ b/kernel/bpf/Makefile
@@ -58,3 +58,4 @@ vpath %.c $(srctree)/kernel/bpf:$(srctree)/tools/lib/bpf
 
 $(obj)/%.o: %.c FORCE
 	$(call if_changed_rule,cc_o_c)
+	$(call cmd,force_checksrc)
-- 
2.46.0





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