1 files changed, 8 insertions, 0 deletions

diff --git a/Documentation/hwmon/hpfall.c b/Documentation/hwmon/hpfall.c
index d2f6711b468b..a3cfe1a5f964 100644
--- a/Documentation/hwmon/hpfall.c
+++ b/Documentation/hwmon/hpfall.c
@@ -16,6 +16,8 @@
 #include <stdint.h>
 #include <errno.h>
 #include <signal.h>
+#include <sys/mman.h>
+#include <sched.h>
 
 void write_int(char *path, int i)
 {
@@ -62,6 +64,7 @@ void ignore_me(void)
 int main(int argc, char *argv[])
 {
         int fd, ret;
+        struct sched_param param;
 
         fd = open("/dev/freefall", O_RDONLY);
         if (fd < 0) {
@@ -69,6 +72,11 @@ int main(int argc, char *argv[])
                 return EXIT_FAILURE;
         }
 
+        daemon(0, 0);
+        param.sched_priority = sched_get_priority_max(SCHED_FIFO);
+        sched_setscheduler(0, SCHED_FIFO, &param);
+        mlockall(MCL_CURRENT|MCL_FUTURE);
+
         signal(SIGALRM, ignore_me);
 
         for (;;) {