I try to compile and got: CHK include/linux/version.h CHK include/linux/utsrelease.h CHK include/linux/compile.h CC kernel/rcupreempt.o kernel/rcupreempt.c: In function 'rcupreempt_try_flip_state_name': kernel/rcupreempt.c:641: error: 'rcu_try_flip_state_names' undeclared (first use in this function) kernel/rcupreempt.c:641: error: (Each undeclared identifier is reported only once kernel/rcupreempt.c:641: error: for each function it appears in.) kernel/rcupreempt.c: In function 'rcupreempt_trace': kernel/rcupreempt.c:645: error: 'struct rcu_data' has no member named 'trace' kernel/rcupreempt.c:646: warning: control reaches end of non-void function kernel/rcupreempt.c: In function 'rcupreempt_try_flip_state_name': kernel/rcupreempt.c:642: warning: control reaches end of non-void function config in attachment.
