2016-05-16 19:48 GMT+03:00 Mark Rutland <mark.rutl...@arm.com>: > /* > + * Iterate over all possible CPUs in a leaf RCU node. > + */ > +#define for_each_leaf_node_possible_cpu(rnp, cpu) \ > + for ((cpu) = rnp->grplo; \ > + cpu <= rnp->grphi; \ > + cpu = cpumask_next((cpu), cpu_possible_mask)) > + > +/* > + * Iterate over all possible CPUs in a leaf RCU node, at each step providing > a > + * bit for comparison against rcu_node bitmasks. > + */ > +#define for_each_leaf_node_possible_cpu_bit(rnp, cpu, bit) \ > + for ((cpu) = rnp->grplo, (bit) = 1; \ > + cpu <= rnp->grphi; \ > + cpu = cpumask_next((cpu), cpu_possible_mask), \ > + (bit) = 1UL << (cpu - rnp->grplo)) > +
[ 0.163652] UBSAN: Undefined behaviour in ../kernel/rcu/tree.c:2912:3 [ 0.164000] shift exponent 64 is too large for 64-bit type 'long unsigned int'
