kernel threads and signals

Let's say I have some legacy code from a device driver that starts a
kernel thread. Its main loop consists in waiting for some timeout or
event and then does some checks (or performs some action).

The wait is interruptible so that I need to verify if the kernel
thread got a signal pending: signal_pending(current) is the call I
use. However, is there any way I can figure out which signal(s) it
received? Then, how can a kernel thread handle any signal?

Are there any default signal(s) enabled when a kernel thread is
created? If so, how can I know which ones are enabled by default?

Thank in advance for your help.

.

Relevant Pages

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