cpu-sched: use cpu hotplug events for cores managementsandbox/slodki/big.little-scheduling

Change-Id: Ia4c15e0bd9ca5edc4e8ae7c3e961ec642203084d
Signed-off-by: Maciej Słodczyk <m.slodczyk2@partner.samsung.com>

1 files changed, 56 insertions, 1 deletions

diff --git a/src/cpu/cpu-sched.c b/src/cpu/cpu-sched.c
index 29458551..c986ce0f 100644
--- a/src/cpu/cpu-sched.c
+++ b/src/cpu/cpu-sched.c
@@ -17,7 +17,7 @@
 #include "util.h"
 #include "trace.h"
 #include "dbus-handler.h"
-#include "dbus-handler.h"
+#include "cpu-hotplug.h"
 
 #define CPU_SCHED_CONF_FILE     RD_CONFIG_FILE(cpu-sched)
 #define CPU_SCHED_CORES_MAX		32
@@ -714,6 +714,48 @@ int cpu_sched_get_core_type(int id)
 	return sched_data.get_core_type(id);
 }
 
+static int cpu_sched_cpu_on(void *data)
+{
+	int id = *(int*)(data);
+	int type;
+
+	if (id < 0 || id >= CPU_SCHED_CORES_MAX) {
+		_E("cpu_sched: cpu on: unknown core id: %d *max is %d)", id, CPU_SCHED_CORES_MAX);
+		return RESOURCED_ERROR_FAIL;
+	}
+
+	type = cpu_sched_get_core_type(id);
+	if (INVALID == type)
+		return RESOURCED_ERROR_FAIL;
+
+	sched_data.cores[id].on = true;
+	/* refresh cpuset core list in sysfs */
+	cpu_sched_setup_cgroup_core_set(type);
+
+	return RESOURCED_ERROR_NONE;
+}
+
+static int cpu_sched_cpu_off(void *data)
+{
+	int id = *(int*)(data);
+	int type;
+
+	if (id < 0 || id >= CPU_SCHED_CORES_MAX) {
+		_E("cpu_sched: cpu on: unknown core id: %d *max is %d)", id, CPU_SCHED_CORES_MAX);
+		return RESOURCED_ERROR_FAIL;
+	}
+
+	type = cpu_sched_get_core_type(id);
+	if (INVALID == type)
+		return RESOURCED_ERROR_FAIL;
+
+	sched_data.cores[id].on = false;
+	/* refresh cpuset core list in sysfs */
+	cpu_sched_setup_cgroup_core_set(type);
+
+	return RESOURCED_ERROR_NONE;
+}
+
 static void register_events()
 {
 	register_notifier(RESOURCED_NOTIFIER_APP_RESUME, cpu_sched_app_fg);
@@ -725,6 +767,9 @@ static void register_events()
 	register_notifier(RESOURCED_NOTIFIER_WIDGET_FOREGRD, cpu_sched_app_fg);
 	register_notifier(RESOURCED_NOTIFIER_WIDGET_BACKGRD, cpu_sched_app_bg);
 
+	register_notifier(RESOURCED_NOTIFIER_CPU_ON, cpu_sched_cpu_on);
+	register_notifier(RESOURCED_NOTIFIER_CPU_OFF, cpu_sched_cpu_off);
+
 }
 
 static void unregister_events()
@@ -737,6 +782,9 @@ static void unregister_events()
 
 	unregister_notifier(RESOURCED_NOTIFIER_WIDGET_FOREGRD, cpu_sched_app_fg);
 	unregister_notifier(RESOURCED_NOTIFIER_WIDGET_BACKGRD, cpu_sched_app_bg);
+
+	unregister_notifier(RESOURCED_NOTIFIER_CPU_ON, cpu_sched_cpu_on);
+	unregister_notifier(RESOURCED_NOTIFIER_CPU_OFF, cpu_sched_cpu_off);
 }
 
 static int resourced_cpu_sched_init(void *data)
@@ -768,6 +816,10 @@ static int resourced_cpu_sched_init(void *data)
 
 	register_events();
 
+	if (cpu_hotplug_init() != 0) {
+		_E("cpu_sched: could not setup cpu hotplugging");
+		return RESOURCED_ERROR_FAIL;
+	}
 
 	_D("cpu-sched: module init ok\n");
 
@@ -775,6 +827,8 @@ static int resourced_cpu_sched_init(void *data)
 
 init_failed:
 	unregister_events();
+	cpu_hotplug_finalize();
+
 	for (int i = 0; i < CPU_SCHED_CORES_MAX; i++) {
 		sched_data.cores[i].set = INVALID;
 		sched_data.cores[i].on = false;
@@ -788,6 +842,7 @@ init_failed:
 static int resourced_cpu_sched_finalize(void *data)
 {
 	unregister_events();
+	cpu_hotplug_finalize();
 
 	g_slist_free_full(sched_data.apps, cpu_sched_app_free);
 	sched_data.apps = NULL;