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| author |   H. Peter Anvin <hpa@linux.intel.com> | 2014-03-17 16:36:30 -0700 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2014-03-19 22:24:08 -0400 |
| commit | 7b878d4b48c4e04b936918bb83836a107ba453b3 (patch) | |
| tree | 83df1d702e0162dc7785730356d934b8d59c45e2 /include/linux/random.h | |
| parent | random: If we have arch_get_random_seed*(), try it before blocking (diff) | |
| download | linux-dev-7b878d4b48c4e04b936918bb83836a107ba453b3.tar.xz linux-dev-7b878d4b48c4e04b936918bb83836a107ba453b3.zip | |
random: Add arch_has_random[_seed]()
Add predicate functions for having arch_get_random[_seed]*(). The
only current use is to avoid the loop in arch_random_refill() when
arch_get_random_seed_long() is unavailable.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'include/linux/random.h')
| -rw-r--r-- | include/linux/random.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/random.h b/include/linux/random.h index c2f08131050d..57fbbffd77a0 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -88,6 +88,10 @@ static inline int arch_get_random_int(unsigned int *v) { return 0; } +static inline int arch_has_random(void) +{ + return 0; +} static inline int arch_get_random_seed_long(unsigned long *v) { return 0; @@ -96,6 +100,10 @@ static inline int arch_get_random_seed_int(unsigned int *v) { return 0; } +static inline int arch_has_random_seed(void) +{ + return 0; +} #endif /* Pseudo random number generator from numerical recipes. */ |