2 files changed, 14 insertions, 1 deletions

diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index 6a45fb583ff1..447775ee2c4b 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -32,15 +32,24 @@ static inline void touch_nmi_watchdog(void)
 #ifdef arch_trigger_all_cpu_backtrace
 static inline bool trigger_all_cpu_backtrace(void)
 {
-        arch_trigger_all_cpu_backtrace();
+        arch_trigger_all_cpu_backtrace(true);
 
         return true;
 }
+static inline bool trigger_allbutself_cpu_backtrace(void)
+{
+        arch_trigger_all_cpu_backtrace(false);
+        return true;
+}
 #else
 static inline bool trigger_all_cpu_backtrace(void)
 {
         return false;
 }
+static inline bool trigger_allbutself_cpu_backtrace(void)
+{
+        return false;
+}
 #endif
 
 #ifdef CONFIG_LOCKUP_DETECTOR
@@ -48,6 +57,7 @@ int hw_nmi_is_cpu_stuck(struct pt_regs *);
 u64 hw_nmi_get_sample_period(int watchdog_thresh);
 extern int watchdog_user_enabled;
 extern int watchdog_thresh;
+extern int sysctl_softlockup_all_cpu_backtrace;
 struct ctl_table;
 extern int proc_dowatchdog(struct ctl_table *, int ,
                            void __user *, size_t *, loff_t *);
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 3c545b48aeab..8304959ad336 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -360,6 +360,9 @@ static inline void ClearPageCompound(struct page *page)
         ClearPageHead(page);
 }
 #endif
+
+#define PG_head_mask ((1L << PG_head))
+
 #else
 /*
  * Reduce page flag use as much as possible by overlapping