From: David Goulet <david.goulet@polymtl.ca>
Date: Thu, 7 Jul 2011 14:29:19 +0000 (-0400)
Subject: Add detection of debugfs and kernel module loading
X-Git-Tag: v2.0-pre1~50
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=b73401da87657682c2b51665a6fd1950f5c362f1;hp=b73401da87657682c2b51665a6fd1950f5c362f1

Add detection of debugfs and kernel module loading

The session daemon now detects the path of the debugfs mount point or
create and mount it at a default location (/mnt/debugfs).

Then, the kernel module are loaded automatically, if present, and the
kernel tracer fd is opened at the previous detected debugfs path.

The kernel module list is hardcoded for now.

NOTE: There is no module unload at the session daemon cleanup. This is
to avoid removing tracing capabilities when a trace is ongoing and
written to disk.

Signed-off-by: David Goulet <david.goulet@polymtl.ca>
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