[tip:locking/core] tools/memory-model: Make scripts take "-j" abbreviation for "--jobs"

[tip-bot for Paul E. McKenney]

Commit-ID:  a6f1de04276d036b61c4d1dbd0367e6b430d8783
Gitweb:     https://git.kernel.org/tip/a6f1de04276d036b61c4d1dbd0367e6b430d8783
Author:     Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Mon, 3 Dec 2018 15:04:51 -0800
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 4 Dec 2018 07:29:52 +0100

tools/memory-model: Make scripts take "-j" abbreviation for "--jobs"

The "--jobs" argument to the litmus-test scripts is similar to the "-jN"
argument to "make", so this commit allows the "-jN" form as well.  While
in the area, it also prohibits the various forms of "-j0".

Suggested-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: akiyks@xxxxxxxxx
Cc: boqun.feng@xxxxxxxxx
Cc: dhowells@xxxxxxxxxx
Cc: j.alglave@xxxxxxxxx
Cc: linux-arch@xxxxxxxxxxxxxxx
Cc: luc.maranget@xxxxxxxx
Cc: npiggin@xxxxxxxxx
Cc: parri.andrea@xxxxxxxxx
Cc: will.deacon@xxxxxxx
Link: http://lkml.kernel.org/r/20181203230451.28921-3-paulmck@xxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 tools/memory-model/scripts/parseargs.sh | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/tools/memory-model/scripts/parseargs.sh b/tools/memory-model/scripts/parseargs.sh
index 96b307c8d64a..859e1d581e05 100644
--- a/tools/memory-model/scripts/parseargs.sh
+++ b/tools/memory-model/scripts/parseargs.sh
@@ -95,8 +95,18 @@ do
 		LKMM_HERD_OPTIONS="$2"
 		shift
 		;;
-	--jobs|--job)
-		checkarg --jobs "(number)" "$#" "$2" '^[0-9]\+$' '^--'
+	-j[1-9]*)
+		njobs="`echo $1 | sed -e 's/^-j//'`"
+		trailchars="`echo $njobs | sed -e 's/[0-9]\+\(.*\)$/\1/'`"
+		if test -n "$trailchars"
+		then
+			echo $1 trailing characters "'$trailchars'"
+			usagehelp
+		fi
+		LKMM_JOBS="`echo $njobs | sed -e 's/^\([0-9]\+\).*$/\1/'`"
+		;;
+	--jobs|--job|-j)
+		checkarg --jobs "(number)" "$#" "$2" '^[1-9][0-9]\+$' '^--'
 		LKMM_JOBS="$2"
 		shift
 		;;