This adds parallelism by default to the "coccicheck" target using spatch's "-max" and "-index" arguments.
Signed-off-by: Kees Cook <[email protected]> --- Documentation/coccinelle.txt | 5 +++++ scripts/coccicheck | 14 ++++++++++++-- 2 files changed, 17 insertions(+), 2 deletions(-) diff --git a/Documentation/coccinelle.txt b/Documentation/coccinelle.txt index 18de785..408439d 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 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ diff --git a/scripts/coccicheck b/scripts/coccicheck index 06fcb33..077e5b2 100755 --- a/scripts/coccicheck +++ b/scripts/coccicheck @@ -11,6 +11,12 @@ else VERBOSE=0 fi +if [ -z "$J" ]; then + NPROC=$(getconf _NPROCESSORS_ONLN) +else + NPROC="$J" +fi + FLAGS="$SPFLAGS -very_quiet" # spatch only allows include directories with the syntax "-I include" @@ -61,10 +67,14 @@ if [ "$ONLINE" = "0" ] ; then fi run_cmd() { + local i if [ $VERBOSE -ne 0 ] ; then - echo "Running: $@" + echo "Running ($NPROC in parallel): $@" fi - eval $@ + for i in $(seq 0 $(( NPROC - 1)) ); do + eval $@ -max $NPROC -index $i & + done + wait } -- 1.7.9.5 -- Kees Cook Chrome OS Security -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
