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SubjectCompilation error for target liblockdep
Date
Hi, guys,

I got a compilation error while building target liblockdep and I think I'd
better report it to you. The error info showed as bellow:

# cd SRC/tools
# make liblockdep
DESCEND lib/lockdep
CC lockdep.o
In file included from lockdep.c:33:0:
../../../kernel/locking/lockdep.c:53:28: fatal error: linux/rcupdate.h: No such file or directory
compilation terminated.
mv: cannot stat './.lockdep.o.tmp': No such file or directory
/home/lzy/kernel-upstream/linux-linus-ubuntu/tools/build/Makefile.build:96: recipe for target 'lockdep.o' failed
make[2]: *** [lockdep.o] Error 1
Makefile:121: recipe for target 'liblockdep-in.o' failed
make[1]: *** [liblockdep-in.o] Error 2
Makefile:68: recipe for target 'liblockdep' failed
make: *** [liblockdep] Error 2

BTW, It was introduced by commit a0b0fd53e1e ("locking/lockdep: Free lock classes that are no longer in use").

Thanks.
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