if (percpu_cntr->lc_config & LPROCFS_CNTR_AVGMINMAX) {
percpu_cntr->lc_sum += amount;
if (percpu_cntr->lc_config & LPROCFS_CNTR_STDDEV)
- percpu_cntr->lc_sumsquare += (__u64)amount * amount;
+ percpu_cntr->lc_sumsquare += (__s64)amount * amount;
if (amount < percpu_cntr->lc_min)
percpu_cntr->lc_min = amount;
if (amount > percpu_cntr->lc_max)