[PATCH 3/3] Add new case for stress test

[Zhou Wenjian <zhouwj-fnst at cn dot fujitsu dot com>]

	* testsuite/systemtap.stress/parallel_exec.exp: New test case
---
 testsuite/systemtap.stress/parallel_exec.exp | 56 ++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 testsuite/systemtap.stress/parallel_exec.exp

diff --git a/testsuite/systemtap.stress/parallel_exec.exp b/testsuite/systemtap.stress/parallel_exec.exp
new file mode 100644
index 0000000..9fbefae
--- /dev/null
+++ b/testsuite/systemtap.stress/parallel_exec.exp
@@ -0,0 +1,56 @@
+#!/bin/expect -f
+
+set test "parallel execute"
+
+proc gen_load {} {
+    # if 'genload' from the ltp exists, use it to create a real load
+    set genload {/usr/local/ltp/testcases/bin/genload}
+    if [file executable $genload] {
+        exec $genload -c 10 -i 10 -m 10 -t 10
+        #                               ^^^^^ run for 10 seconds
+        #                         ^^^^^ 10 procs spinning on malloc
+        #                   ^^^^^ 10 procs spinning on sync
+        #             ^^^^^ 10 procs spinning on sqrt
+    } else {
+        # sleep for a bit
+        wait_n_secs 10
+    }
+    return 0
+}
+
+set process_num 10
+
+set script {
+	probe syscall.open
+	{
+		if (pid() != target()) next
+		log("open")
+	}
+
+	probe syscall.close
+	{
+		if (pid() != target()) next
+		log("close")
+	}
+}
+
+for { set i 0 } { $i < $process_num } { incr i } {
+	exec stap -e "$script" -c "cat /etc/hosts > /dev/null" >>/tmp/parallel_exec &
+}
+
+if {[eval gen_load] == 0} then {
+	pass "$test load generation"
+} else {
+	fail "$test load generation"
+}
+
+set num1 [exec stap -e "$script" -c "cat /etc/hosts > /dev/null" | grep \[open|close\] | wc -l]
+set num2 [exec grep \[open|close\] /tmp/parallel_exec | wc -l]
+
+exec rm -f /tmp/parallel_exec
+
+if {$num1 * $process_num != $num2} {
+	fail $test
+} else {
+	pass $test
+}
-- 
1.8.3.1