diff options
author | Ingo Molnar <mingo@kernel.org> | 2016-03-04 12:12:08 +0100 |
---|---|---|
committer | Ingo Molnar <mingo@kernel.org> | 2016-03-04 12:12:08 +0100 |
commit | bc94b99636dc7bcccce439a9fb9c00065e2e2627 (patch) | |
tree | bddbd29a5fd7b2d270d039efc1d6858791a2c98f /drivers/char/random.c | |
parent | 4650bac1fc45d64aef62ab99aa4db93d41dedbd9 (diff) | |
parent | fc77dbd34c5c99bce46d40a2491937c3bcbd10af (diff) |
Merge tag 'v4.5-rc6' into core/resources, to resolve conflict
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/char/random.c')
-rw-r--r-- | drivers/char/random.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index d0da5d852d41..b583e5336630 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1819,6 +1819,28 @@ unsigned int get_random_int(void) EXPORT_SYMBOL(get_random_int); /* + * Same as get_random_int(), but returns unsigned long. + */ +unsigned long get_random_long(void) +{ + __u32 *hash; + unsigned long ret; + + if (arch_get_random_long(&ret)) + return ret; + + hash = get_cpu_var(get_random_int_hash); + + hash[0] += current->pid + jiffies + random_get_entropy(); + md5_transform(hash, random_int_secret); + ret = *(unsigned long *)hash; + put_cpu_var(get_random_int_hash); + + return ret; +} +EXPORT_SYMBOL(get_random_long); + +/* * randomize_range() returns a start address such that * * [...... <range> .....] |