From c5864560d935db879cafa21feca0156d91eba842 Mon Sep 17 00:00:00 2001
From: Sumera Priyadarsini <sylphrenadin@gmail.com>
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 <sylphrenadin@gmail.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
---
scripts/coccicheck | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/coccicheck b/scripts/coccicheck
index d67907b8a38b09..209bb0427b43c1 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
--
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