Commit Graph

6 Commits

Author SHA1 Message Date
Linus Torvalds 93567c43eb Merge branch 'docs-next' of git://git.lwn.net/linux-2.6
* 'docs-next' of git://git.lwn.net/linux-2.6:
  docs: update the development process document
  docs: fix dev_debug() braino in dynamic-debug-howto.txt
2011-03-27 19:46:59 -07:00
Jonathan Corbet 9cad796270 docs: fix dev_debug() braino in dynamic-debug-howto.txt
While looking at dynamic-debug-howto.txt, I noticed that it references
dev_debug() (which doesn't exist) instead of dev_dbg() (which does
exist).  I'm lazy, so I choose to fix the document rather than changing
every dev_dbg() call.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2011-03-25 10:42:17 -06:00
Bart Van Assche 8ba6ebf583 Dynamic debug: Add more flags
Add flags that allow the user to specify via debugfs whether or not the
module name, function name, line number and/or thread ID have to be
included in the printed message.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: Greg Banks <gnb@fmeh.org>
Cc: Konrad Rzeszutek Wilk <konrad@darnok.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 15:39:16 -08:00
Thomas Renninger a648ec05bb Dynamic Debug: Introduce ddebug_query= boot parameter
Dynamic debug lacks the ability to enable debug messages at boot time.
One could patch initramfs or service startup scripts to write to
/sys/../dynamic_debug/control, but this sucks.

This patch makes it possible to pass a query in the same format one can
write to /sys/../dynamic_debug/control via boot param.
When dynamic debug gets initialized, this query will automatically be
applied.


Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: jbaron@redhat.com
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-10-22 10:16:42 -07:00
Greg Banks 9898abb3d2 Dynamic debug: allow simple quoting of words
Allow simple quoting of words in the dynamic debug control language.

This allows more natural specification when using the control language
to match against printk formats, e.g

#echo -n 'format "Setting node for non-present cpu" +p' >
	/mnt/debugfs/dynamic_debug/control

instead of

#echo -n 'format Setting\040node\040for\040non-present\040cpu +p' >
	/mnt/debugfs/dynamic_debug/control

Adjust the dynamic debug documention to describe that and provide a
new example.  Adjust the existing examples in the documentation to
reflect the current whitespace escaping behaviour when reading the
control file.  Fix some minor documentation trailing whitespace.

Signed-off-by: Greg Banks <gnb@melbourne.sgi.com>
Acked-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-24 16:38:27 -07:00
Jason Baron 86151fdf38 dynamic debug: update docs
updates the documentation for 'dynamic debug' feature.

Signed-off-by: Greg Banks <gnb@sgi.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-24 16:38:27 -07:00