linux-kernel - [PATCH] docs: admin-guide: fix printk

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20191002114610.5773-1-oleksandr@redhat.com>
Date:   Wed,  2 Oct 2019 13:46:10 +0200
From:   Oleksandr Natalenko <oleksandr@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-doc@...r.kernel.org, Jonathan Corbet <corbet@....net>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Ingo Molnar <mingo@...nel.org>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Thorsten Leemhuis <linux@...mhuis.info>,
        Quentin Perret <qperret@...rret.net>
Subject: [PATCH] docs: admin-guide: fix printk_ratelimit explanation

The printk_ratelimit value accepts seconds, not jiffies (though it is
converted into jiffies internally). Update documentation to reflect
this.

Also, remove the statement about allowing 1 message in 5 seconds since
bursts up to 10 messages are allowed by default.

Finally, while we are here, mention default value for
printk_ratelimit_burst too.

Signed-off-by: Oleksandr Natalenko <oleksandr@...hat.com>
---
 Documentation/admin-guide/sysctl/kernel.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
index 032c7cd3cede..6e0da29e55f1 100644
--- a/Documentation/admin-guide/sysctl/kernel.rst
+++ b/Documentation/admin-guide/sysctl/kernel.rst
@@ -831,8 +831,8 @@ printk_ratelimit:
 =================
 
 Some warning messages are rate limited. printk_ratelimit specifies
-the minimum length of time between these messages (in jiffies), by
-default we allow one every 5 seconds.
+the minimum length of time between these messages (in seconds).
+The default value is 5 seconds.
 
 A value of 0 will disable rate limiting.
 
@@ -845,6 +845,8 @@ seconds, we do allow a burst of messages to pass through.
 printk_ratelimit_burst specifies the number of messages we can
 send before ratelimiting kicks in.
 
+The default value is 10 messages.
+
 
 printk_devkmsg:
 ===============
-- 
2.23.0