prd_usage 40 arch/powerpc/platforms/powernv/opal-prd.c static atomic_t prd_usage; prd_usage 92 arch/powerpc/platforms/powernv/opal-prd.c if (atomic_xchg(&prd_usage, 1) == 1) prd_usage 260 arch/powerpc/platforms/powernv/opal-prd.c atomic_xchg(&prd_usage, 0);