coccinelle.txt: update documentation to include M= option
Adding documentation for the new M= option which limits Coccinelle
to a specific set of directories.
Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/Documentation/coccinelle.txt b/Documentation/coccinelle.txt
index 96b6903..cf44eb6 100644
--- a/Documentation/coccinelle.txt
+++ b/Documentation/coccinelle.txt
@@ -102,9 +102,15 @@
make coccicheck COCCI=<my_SP.cocci> MODE=report
- Using Coccinelle on (modified) files
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ Controlling Which Files are Processed by Coccinelle
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+By default the entire kernel source tree is checked.
+To apply Coccinelle to a specific directory, M= can be used.
+For example, to check drivers/net/wireless/ one may write:
+
+ make coccicheck M=drivers/net/wireless/
+
To apply Coccinelle on a file basis, instead of a directory basis, the
following command may be used: