[LTP] [PATCH v3 1/2] cpuset: skip test when cpu or nodes are not numbered continuously from 0

[Yang Xu]

These cpuset cases(cpuset_base_ops_test, cpuset_hierarchy_test, cpuset_inherit_test...)
seem all not consider the situation(cpus/memory are not numbered continuously). It is
continuously from 0 as default. Skip test if there are not numbered continuously to
avoid unexpected error.

This patch also fix cpu_inherit error by using original mem value.

cpuset_inherit case fails on 4 numa nodes pc, as below:
cpuset_inherit 1 TPASS: cpus: Inherited information is right!
cpuset_inherit 3 TPASS: cpus: Inherited information is right!
cpuset_inherit 5 TPASS: cpus: Inherited information is right!
cpuset_inherit 7 TPASS: cpus: Inherited information is right!
cpuset_inherit 9 TPASS: cpus: Inherited information is right!
cpuset_inherit 11 TPASS: cpus: Inherited information is right!
cpuset_inherit 13 TPASS: mems: Inherited information is right!
cpuset_inherit 15 TPASS: mems: Inherited information is right!
cpuset_inherit 17 TPASS: mems: Inherited information is right!
cpuset_inherit 19 TPASS: mems: Inherited information is right!
cpuset_inherit 21 TPASS: mems: Inherited information is right!
cpuset_inherit 23 TFAIL: mems: Test result - 0-3 Expected string - "4"

Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
---
 .../kernel/controllers/cpuset/cpuset_funcs.sh | 29 +++++++++++++++++--
 1 file changed, 26 insertions(+), 3 deletions(-)

diff --git a/testcases/kernel/controllers/cpuset/cpuset_funcs.sh b/testcases/kernel/controllers/cpuset/cpuset_funcs.sh
index f4365af2c..84b87d17e 100755
--- a/testcases/kernel/controllers/cpuset/cpuset_funcs.sh
+++ b/testcases/kernel/controllers/cpuset/cpuset_funcs.sh
@@ -26,23 +26,34 @@
 
 . test.sh
 
+cpu_string="`cat /sys/devices/system/cpu/online`"
 NR_CPUS=`tst_ncpus`
+
 if [ -f "/sys/devices/system/node/has_high_memory" ]; then
-	N_NODES="`cat /sys/devices/system/node/has_high_memory | tr ',' ' '`"
+	mem_string="`cat /sys/devices/system/node/has_high_memory`"
 else
-	N_NODES="`cat /sys/devices/system/node/has_normal_memory | tr ',' ' '`"
+	mem_string="`cat /sys/devices/system/node/has_normal_memory`"
 fi
+N_NODES="`echo $mem_string | tr ',' ' '`"
 count=0
+final_node=0
 for item in $N_NODES; do
 	delta=1
 	if [ "${item#*-*}" != "$item" ]; then
 		delta=$((${item#*-*} - ${item%*-*} + 1))
 	fi
+	final_node=${item#*-*}
 	count=$((count + $delta))
 done
+final_node=$((final_node + 1))
 N_NODES=$count
 
-mem_string="$N_NODES"
+final_cpu=0
+N_CPUS="`echo $cpu_string | tr ',' ' '`"
+for item in $N_CPUS; do
+	final_cpu=${item#*-*}
+done
+final_cpu=$((final_cpu + 1))
 
 CPUSET="/dev/cpuset"
 CPUSET_TMP="/tmp/cpuset_tmp"
@@ -78,6 +89,12 @@ ncpus_check()
 	if [ $NR_CPUS -lt $1 ]; then
 		tst_brkm TCONF "The total of CPUs is less than $1"
 	fi
+	# check online cpus whether match 0-num
+	if [ $final_cpu -eq $NR_CPUS ]; then
+		tst_resm TINFO "CPUs are numbered continuously starting at 0 ($cpu_string)"
+	else
+		tst_brkm TCONF "CPUs are not numbered continuously starting at 0 ($cpu_string)"
+	fi
 }
 
 nnodes_check()
@@ -85,6 +102,12 @@ nnodes_check()
 	if [ $N_NODES -lt $1 ]; then
 		tst_brkm TCONF "The total of nodes is less than $1"
 	fi
+	# check online nodes whether match 0-num
+	if [ $final_node -eq $N_NODES ]; then
+		tst_resm TINFO "Nodes are numbered continuously starting at 0 ($mem_string)"
+	else
+		tst_brkm TCONF "Nodes are not numbered continuously starting at 0 ($mem_string)"
+	fi
 }
 
 user_check()
-- 
2.23.0