[PATCH] kernel/hung_task.c - fix sparse warnings

[PATCH] kernel/hung_task.c - fix sparse warnings

[valdis.kletnieks]

sparse complains:

  CHECK   kernel/hung_task.c
kernel/hung_task.c:28:19: warning: symbol 'sysctl_hung_task_check_count' was not declared. Should it be static?
kernel/hung_task.c:42:29: warning: symbol 'sysctl_hung_task_timeout_secs' was not declared. Should it be static?
kernel/hung_task.c:47:29: warning: symbol 'sysctl_hung_task_check_interval_secs' was not declared. Should it be static?
kernel/hung_task.c:49:19: warning: symbol 'sysctl_hung_task_warnings' was not declared. Should it be static?
kernel/hung_task.c:61:28: warning: symbol 'sysctl_hung_task_panic' was not declared. Should it be static?
kernel/hung_task.c:219:5: warning: symbol 'proc_dohung_task_timeout_secs' was not declared. Should it be static?

Add the appropriate header file to provide declarations.

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>

diff --git a/kernel/hung_task.c b/kernel/hung_task.c
index 4a9191617076..0c11216171c9 100644
--- a/kernel/hung_task.c
+++ b/kernel/hung_task.c
@@ -19,6 +19,7 @@
 #include <linux/utsname.h>
 #include <linux/sched/signal.h>
 #include <linux/sched/debug.h>
+#include <linux/sched/sysctl.h>
 
 #include <trace/events/sched.h>