From: "Stephan Müller" <smueller@chronox.de>
To: Ted Tso <tytso@mit.edu>
Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org
Subject: [PATCH 3/8] random: trigger random_ready callback upon crng_init == 1
Date: Tue, 27 Dec 2016 23:39:57 +0100 [thread overview]
Message-ID: <3576149.HSfW5KObBF@positron.chronox.de> (raw)
In-Reply-To: <3254875.f5A5oHPdxF@positron.chronox.de>
The random_ready callback mechanism is intended to replicate the
getrandom system call behavior to in-kernel users. As the getrandom
system call unblocks with crng_init == 1, trigger the random_ready
wakeup call at the same time.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
---
drivers/char/random.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 482531d..5c26b1c 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -810,6 +810,7 @@ static int crng_fast_load(const char *cp, size_t len)
}
if (crng_init_cnt >= CRNG_INIT_CNT_THRESH) {
crng_init = 1;
+ process_random_ready_list();
wake_up_interruptible(&crng_init_wait);
pr_notice("random: fast init done\n");
}
--
2.9.3
next prev parent reply other threads:[~2016-12-27 22:43 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-27 22:38 [PATCH 0/8] random: cleanup of code after removal of nonblocking pool Stephan Müller
2016-12-27 22:39 ` [PATCH 1/8] random: remove stale maybe_reseed_primary_crng Stephan Müller
2016-12-27 22:39 ` [PATCH 2/8] random: remove stale urandom_init_wait Stephan Müller
2016-12-27 22:39 ` Stephan Müller [this message]
2017-01-18 4:12 ` [PATCH 3/8] random: trigger random_ready callback upon crng_init == 1 Theodore Ts'o
2017-01-18 17:09 ` Stephan Müller
2016-12-27 22:40 ` [PATCH 4/8] random: remove unused branch in hot code path Stephan Müller
2017-01-18 4:35 ` Theodore Ts'o
2017-04-27 11:23 ` Geert Uytterhoeven
2016-12-27 22:40 ` [PATCH 5/8] random: remove variable limit Stephan Müller
2016-12-27 22:41 ` [PATCH 6/8] random: fix comment for unused random_min_urandom_seed Stephan Müller
2016-12-27 22:41 ` [PATCH 7/8] random: remove noop function call to xfer_secondary_pool Stephan Müller
2017-01-18 16:10 ` Theodore Ts'o
2016-12-27 22:42 ` [PATCH 8/8] random: move FIPS continuous test to output functions Stephan Müller
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