Hi!
On 13:09 Mon 23 Aug , Michael Griepentrog wrote:
> Hi,
>
> I'm trying to send UDP packets from the kernel using sock_sendmsg(),
> but it is possible for this to eventually call schedule(). The part of
> the kernel I am working in expects to be executed atomically, so
> calling sock_sendmsg() usually generates the error: "BUG: scheduling
> while atomic". Is there any way to call sock_sendmsg() such that it
> executes atomically (i.e., doesn't relinquish the CPU to the
> scheduler)?
The usual way to do this is via workqueues: You can schedule a work atomically
and the function will called with interrupts enabled later.
-Michi
--
programing a layer 3+4 network protocol for mesh networks
see http://michaelblizek.twilightparadox.com
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