diff options
| author | Hannes Frederic Sowa <[email protected]> | 2013-11-11 12:20:34 +0100 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2013-11-11 14:32:14 -0500 |
| commit | 4af712e8df998475736f3e2727701bd31e3751a9 (patch) | |
| tree | 315b7092cf6ee0aeb3a180a09f8d628984cd9ddf /tools/perf/util/trace-event-scripting.c | |
| parent | 6d31920246a9fc80be4f16acd27c0bbe8d7b8494 (diff) | |
random32: add prandom_reseed_late() and call when nonblocking pool becomes initialized
The Tausworthe PRNG is initialized at late_initcall time. At that time the
entropy pool serving get_random_bytes is not filled sufficiently. This
patch adds an additional reseeding step as soon as the nonblocking pool
gets marked as initialized.
On some machines it might be possible that late_initcall gets called after
the pool has been initialized. In this situation we won't reseed again.
(A call to prandom_seed_late blocks later invocations of early reseed
attempts.)
Joint work with Daniel Borkmann.
Cc: Eric Dumazet <[email protected]>
Cc: Theodore Ts'o <[email protected]>
Signed-off-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Acked-by: "Theodore Ts'o" <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions