linux-kernel - [PATCH v2 tip/core/rcu 1/9] rcutorture: Add batch number to script printout

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Message-Id: <1449703426-4025-1-git-send-email-paulmck@linux.vnet.ibm.com>
Date:	Wed,  9 Dec 2015 15:23:38 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
	rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
	dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com,
	bobby.prani@...il.com,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH v2 tip/core/rcu 1/9] rcutorture: Add batch number to script printout

Currently, the scripts print "----Start batch" at the beginning of each
batch, which does serve as a good visual delimiter between batches.
Unfortunately, if there are a lot of batches, it is hard to quickly
estimate test runtime from the output of "--dryrun sched".  This commit
therefore adds a batch number, so that the beginning-of-batch output
looks like this "----Start batch 10" for the tenth batch.

Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@...htriplett.org>
---
 tools/testing/selftests/rcutorture/bin/kvm.sh | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index f6483609ebc2..013c48239a66 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -307,10 +307,10 @@ awk < $T/cfgcpu.pack \
 }
 
 # Dump out the scripting required to run one test batch.
-function dump(first, pastlast)
+function dump(first, pastlast, batchnum)
 {
-	print "echo ----Start batch: `date`";
-	print "echo ----Start batch: `date` >> " rd "/log";
+	print "echo ----Start batch " batchnum ": `date`";
+	print "echo ----Start batch " batchnum ": `date` >> " rd "/log";
 	jn=1
 	for (j = first; j < pastlast; j++) {
 		builddir=KVM "/b" jn
@@ -371,25 +371,28 @@ END {
 	njobs = i;
 	nc = ncpus;
 	first = 0;
+	batchnum = 1;
 
 	# Each pass through the following loop considers one test.
 	for (i = 0; i < njobs; i++) {
 		if (ncpus == 0) {
 			# Sequential test specified, each test its own batch.
-			dump(i, i + 1);
+			dump(i, i + 1, batchnum);
 			first = i;
+			batchnum++;
 		} else if (nc < cpus[i] && i != 0) {
 			# Out of CPUs, dump out a batch.
-			dump(first, i);
+			dump(first, i, batchnum);
 			first = i;
 			nc = ncpus;
+			batchnum++;
 		}
 		# Account for the CPUs needed by the current test.
 		nc -= cpus[i];
 	}
 	# Dump the last batch.
 	if (ncpus != 0)
-		dump(first, i);
+		dump(first, i, batchnum);
 }' >> $T/script
 
 cat << ___EOF___ >> $T/script
-- 
2.5.2

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