With sparse 0.6.1-rc1 and Linux kernel v5.4-rc1, sparse is complaining about bit field sizes in 2 header files: include/linux/sched.h and kernel/sched/sched.h. They both use a calculation + define macro for the bit field sizes. ../kernel/sched/sched.h:809:31: error: bad integer constant expression ../kernel/sched/sched.h:809:61: error: invalid named zero-width bitfield `value' ../kernel/sched/sched.h:810:45: error: bad integer constant expression ../kernel/sched/sched.h:810:77: error: invalid named zero-width bitfield `tasks' ../include/linux/sched.h:596:43: error: bad integer constant expression ../include/linux/sched.h:596:73: error: invalid named zero-width bitfield `value' ../include/linux/sched.h:597:43: error: bad integer constant expression ../include/linux/sched.h:597:67: error: invalid named zero-width bitfield `bucket_id' I added #include <linux/log2.h> to both of these header files so that bits_per() would be defined, but that did not help solve the problem. -- ~Randy
