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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-17 06:23:09 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-17 06:23:09 +0400 |
| commit | c2bc3a316a7281f67e36b34dac2802cbe36a9128 (patch) | |
| tree | 53e0b78ac25109b71c47bf47f4cdbb35ef1e7e36 /drivers/char/random.c | |
| parent | 5674124f9f16f196533abb383193bd232c9afc2f (diff) | |
| parent | 2dac8e54f988ab58525505d7ef982493374433c3 (diff) | |
| download | linux-c2bc3a316a7281f67e36b34dac2802cbe36a9128.tar.xz | |
Merge branch 'x86/rdrand' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'x86/rdrand' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
random: Adjust the number of loops when initializing
random: Use arch-specific RNG to initialize the entropy store
Diffstat (limited to 'drivers/char/random.c')
| -rw-r--r-- | drivers/char/random.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index 732215b805c1..54ca8b23cde3 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -965,6 +965,7 @@ EXPORT_SYMBOL(get_random_bytes); */ static void init_std_data(struct entropy_store *r) { + int i; ktime_t now; unsigned long flags; @@ -974,6 +975,11 @@ static void init_std_data(struct entropy_store *r) now = ktime_get_real(); mix_pool_bytes(r, &now, sizeof(now)); + for (i = r->poolinfo->POOLBYTES; i > 0; i -= sizeof flags) { + if (!arch_get_random_long(&flags)) + break; + mix_pool_bytes(r, &flags, sizeof(flags)); + } mix_pool_bytes(r, utsname(), sizeof(*(utsname()))); } |