[PATCH v6 14/23] virt/steal_monitor: Define steal_monitor structure

[Shrikanth Hegde <sshegde@linux.ibm.com>]

Main structure of steal monitor. It has
- work: deferred periodic work function
- prev_steal, prev_time - To calculate the delta in periodic work.
- interval_ms, high_threshold, low_threshold - debug knobs of
  steal_monitor.

sm_core_ctx - instance used by the core code.

Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
---
 drivers/virt/steal_monitor/sm_core.c |  2 ++
 drivers/virt/steal_monitor/sm_core.h | 12 ++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/virt/steal_monitor/sm_core.c b/drivers/virt/steal_monitor/sm_core.c
index 222c23286043..92d5a0e3d8bf 100644
--- a/drivers/virt/steal_monitor/sm_core.c
+++ b/drivers/virt/steal_monitor/sm_core.c
@@ -14,6 +14,8 @@
 
 #include "sm_core.h"
 
+struct steal_monitor sm_core_ctx;
+
 static int __init steal_monitor_init(void)
 {
 	pr_info("steal_monitor is enabled\n");
diff --git a/drivers/virt/steal_monitor/sm_core.h b/drivers/virt/steal_monitor/sm_core.h
index 40913aeccf16..e5c3ea0a63c9 100644
--- a/drivers/virt/steal_monitor/sm_core.h
+++ b/drivers/virt/steal_monitor/sm_core.h
@@ -9,4 +9,16 @@
 #include <linux/init.h>
 #include <linux/cpuhplock.h>
 
+struct steal_monitor {
+	struct delayed_work	work;
+	u64			prev_steal;
+	int			prev_direction;
+	unsigned int		interval_ms;
+	unsigned int		high_threshold;
+	unsigned int		low_threshold;
+	ktime_t			prev_time;
+};
+
+extern struct steal_monitor sm_core_ctx;
+
 #endif /* __VIRT_STEAL_CORE_H */
-- 
2.47.3