From: Andy Lutomirski <luto@kernel.org>
To: Theodore Tso <tytso@google.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
Linux API <linux-api@vger.kernel.org>,
Kees Cook <keescook@chromium.org>,
"Jason A. Donenfeld" <Jason@zx2c4.com>,
"Ahmed S. Darwish" <darwish.07@gmail.com>,
Lennart Poettering <mzxreary@0pointer.de>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"Alexander E. Patrakov" <patrakov@gmail.com>,
Michael Kerrisk <mtk.manpages@gmail.com>,
Willy Tarreau <w@1wt.eu>, Matthew Garrett <mjg59@srcf.ucam.org>,
Ext4 Developers List <linux-ext4@vger.kernel.org>,
linux-man <linux-man@vger.kernel.org>,
Andy Lutomirski <luto@kernel.org>
Subject: [PATCH v2 1/7] random: Don't wake crng_init_wait when crng_init == 1
Date: Fri, 20 Sep 2019 07:36:23 -0700 [thread overview]
Message-ID: <7d54ef8512b06baf396f12584f7f48a9558ecd0f.1568990048.git.luto@kernel.org> (raw)
In-Reply-To: <cover.1568990048.git.luto@kernel.org>
crng_init_wait is only used to wayt for crng_init to be set to 2, so
there's no point to waking it when crng_init is set to 1. Remove the
unnecessary wake_up_interruptible() call.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
---
drivers/char/random.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 5d5ea4ce1442..d152612e08fc 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -946,7 +946,6 @@ static int crng_fast_load(const char *cp, size_t len)
if (crng_init_cnt >= CRNG_INIT_CNT_THRESH) {
invalidate_batched_entropy();
crng_init = 1;
- wake_up_interruptible(&crng_init_wait);
pr_notice("random: fast init done\n");
}
return 1;
--
2.21.0
next prev parent reply other threads:[~2019-09-20 14:37 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-20 14:36 [PATCH v2 0/7] Rework random blocking Andy Lutomirski
2019-09-20 14:36 ` Andy Lutomirski [this message]
2019-09-20 14:36 ` [PATCH v2 2/7] random: Add GRND_INSECURE to return best-effort non-cryptographic bytes Andy Lutomirski
2019-09-20 14:36 ` [PATCH v2 3/7] random: Ignore GRND_RANDOM in getentropy(2) Andy Lutomirski
2019-09-20 14:36 ` [PATCH v2 4/7] random: Make /dev/random be almost like /dev/urandom Andy Lutomirski
2019-09-20 14:36 ` [PATCH v2 5/7] random: Remove the blocking pool Andy Lutomirski
2019-09-20 14:36 ` [PATCH v2 6/7] random: Delete code to pull data into pools Andy Lutomirski
2019-09-20 14:36 ` [PATCH v2 7/7] random: Remove kernel.random.read_wakeup_threshold Andy Lutomirski
2019-09-24 20:30 ` Jann Horn
2019-09-26 1:09 ` Eric W. Biederman
2019-09-20 14:46 ` [PATCH v2 0/7] Rework random blocking Andy Lutomirski
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