From c5864560d935db879cafa21feca0156d91eba842 Mon Sep 17 00:00:00 2001 From: Sumera Priyadarsini Date: Sun, 11 Oct 2020 15:59:42 +0530 Subject: [PATCH] scripts: coccicheck: Change default condition for parallelism Currently, Coccinelle uses at most one thread per core by default in machines with more than 2 hyperthreads. However, for systems with only 4 hyperthreads, this does not improve performance. Modify coccicheck to use all available threads in machines with upto 4 hyperthreads. Signed-off-by: Sumera Priyadarsini Signed-off-by: Julia Lawall --- scripts/coccicheck | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/coccicheck b/scripts/coccicheck index d67907b8a38b..209bb0427b43 100755 --- a/scripts/coccicheck +++ b/scripts/coccicheck @@ -79,7 +79,7 @@ else THREADS_PER_CORE=$(lscpu | grep "Thread(s) per core: " | tr -cd "[:digit:]") if [ -z "$J" ]; then NPROC=$(getconf _NPROCESSORS_ONLN) - if [ $THREADS_PER_CORE -gt 1 -a $NPROC -gt 2 ] ; then + if [ $THREADS_PER_CORE -gt 1 -a $NPROC -gt 4 ] ; then NPROC=$((NPROC/2)) fi else