Add kernel option vma_max_shift to twoway container tests.
Risk: low.
Signed-off-by: Duane Sand <duanes@google.com>
git-svn-id: http://test.kernel.org/svn/autotest/trunk@2187 592f7852-d20e-0410-864c-8624ca9c26a4
diff --git a/client/tools/setidle.c b/client/tools/setidle.c
new file mode 100644
index 0000000..4d2cc05
--- /dev/null
+++ b/client/tools/setidle.c
@@ -0,0 +1,30 @@
+/* setidle.c: tell kernel to use SCHED_IDLE policy for an existing process
+ and its future descendents. These background processes run only when some
+ cpu would otherwise be idle. The process's priority is never dynamically
+ escalated to the point where its I/O actions may compete with that of
+ higher priority work */
+
+#include <sched.h>
+#include <errno.h>
+#include <stdio.h>
+
+#define SCHED_IDLE 6006
+
+int main(int argc, char *argv[])
+{
+ int pid;
+ struct sched_param param = { 0 };
+
+ if (argc != 2) {
+ printf("usage: %s pid\n", argv[0]);
+ return EINVAL;
+ }
+
+ pid = atoi(argv[1]);
+
+ if (sched_setscheduler(pid, SCHED_IDLE, ¶m) == -1) {
+ perror("error sched_setscheduler");
+ return -1;
+ }
+ return 0;
+}