From mboxrd@z Thu Jan  1 00:00:00 1970
From: valdis.kletnieks@vt.edu (valdis.kletnieks at vt.edu)
Date: Tue, 10 Oct 2017 03:50:09 -0400
Subject: boot time variable
In-Reply-To: <20171009231709.GB20083@eros>
References: <20171009231709.GB20083@eros>
Message-ID: <39732.1507621809@turing-police.cc.vt.edu>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Tue, 10 Oct 2017 10:17:09 +1100, "Tobin C. Harding" said:
> I would like to create a boot time variable i.e a variable that is set once at boot time. Variable
> does not need to be globally accessible. (actually I am using two variables).

The canonical way to have stuff happen at boot is usually declaring
an initcall.

> how/where to initialize the lock in a race free manner?

Step 0: Figure out how once-at-boot code could *possibly* be called
a second time.  What are you worried about racing here?
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