diff --git a/drivers/char/random.c b/drivers/char/random.c index 26939a3000599..55b73e454a122 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -759,7 +759,6 @@ static int credit_entropy_bits_safe(struct entropy_store *r, int nbits) static DECLARE_WAIT_QUEUE_HEAD(crng_init_wait); -#ifdef CONFIG_NUMA /* * Hack to deal with crazy userspace progams when they are all trying * to access /dev/urandom in parallel. The programs are almost @@ -767,7 +766,6 @@ static DECLARE_WAIT_QUEUE_HEAD(crng_init_wait); * their brain damage. */ static struct crng_state **crng_node_pool __read_mostly; -#endif static void invalidate_batched_entropy(void); static void numa_crng_init(void); @@ -815,7 +813,7 @@ static bool __init crng_init_try_arch_early(struct crng_state *crng) return arch_init; } -static void __maybe_unused crng_initialize_secondary(struct crng_state *crng) +static void crng_initialize_secondary(struct crng_state *crng) { chacha_init_consts(crng->state); _get_random_bytes(&crng->state[4], sizeof(__u32) * 12); @@ -866,7 +864,6 @@ static void crng_finalize_init(struct crng_state *crng) } } -#ifdef CONFIG_NUMA static void do_numa_crng_init(struct work_struct *work) { int i; @@ -893,29 +890,24 @@ static DECLARE_WORK(numa_crng_init_work, do_numa_crng_init); static void numa_crng_init(void) { - schedule_work(&numa_crng_init_work); + if (IS_ENABLED(CONFIG_NUMA)) + schedule_work(&numa_crng_init_work); } static struct crng_state *select_crng(void) { - struct crng_state **pool; - int nid = numa_node_id(); - - /* pairs with cmpxchg_release() in do_numa_crng_init() */ - pool = READ_ONCE(crng_node_pool); - if (pool && pool[nid]) - return pool[nid]; + if (IS_ENABLED(CONFIG_NUMA)) { + struct crng_state **pool; + int nid = numa_node_id(); - return &primary_crng; -} -#else -static void numa_crng_init(void) {} + /* pairs with cmpxchg_release() in do_numa_crng_init() */ + pool = READ_ONCE(crng_node_pool); + if (pool && pool[nid]) + return pool[nid]; + } -static struct crng_state *select_crng(void) -{ return &primary_crng; } -#endif /* * crng_fast_load() can be called by code in the interrupt service