coccicheck: span checks across CPUs

This adds parallelism by default to the "coccicheck" target using
spatch's "-max" and "-index" arguments.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Nicolas Palix <nicolas.palix@imag.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>

1 files changed, 5 insertions, 0 deletions

diff --git a/Documentation/coccinelle.txt b/Documentation/coccinelle.txt
index 18de78599dd4..408439d07889 100644
--- a/Documentation/coccinelle.txt
+++ b/Documentation/coccinelle.txt
@@ -91,6 +91,11 @@ To enable verbose messages set the V= variable, for example:
 
    make coccicheck MODE=report V=1
 
+By default, coccicheck tries to run as parallel as possible. To change
+the parallelism, set the J= variable. For example, to run across 4 CPUs:
+
+   make coccicheck MODE=report J=4
+
 
  Using Coccinelle with a single semantic patch
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~