diff options
| -rw-r--r-- | include/linux/random.h | 6 | ||||
| -rw-r--r-- | lib/random32.c | 2 |
2 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/random.h b/include/linux/random.h index e651874df2c9..a75840c1aa71 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -7,6 +7,8 @@ #define _LINUX_RANDOM_H #include <linux/list.h> +#include <linux/once.h> + #include <uapi/linux/random.h> struct random_ready_callback { @@ -45,6 +47,10 @@ struct rnd_state { u32 prandom_u32_state(struct rnd_state *state); void prandom_bytes_state(struct rnd_state *state, void *buf, size_t nbytes); +void prandom_seed_full_state(struct rnd_state __percpu *pcpu_state); + +#define prandom_init_once(pcpu_state) \ + DO_ONCE(prandom_seed_full_state, (pcpu_state)) /** * prandom_u32_max - returns a pseudo-random number in interval [0, ep_ro) diff --git a/lib/random32.c b/lib/random32.c index 36c09fb3fec9..12111910ccd0 100644 --- a/lib/random32.c +++ b/lib/random32.c @@ -238,7 +238,7 @@ static void __init __prandom_start_seed_timer(void) add_timer(&seed_timer); } -static void prandom_seed_full_state(struct rnd_state __percpu *pcpu_state) +void prandom_seed_full_state(struct rnd_state __percpu *pcpu_state) { int i; |