X-Git-Url: https://git.stricted.de/?p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git;a=blobdiff_plain;f=kernel%2Fsched%2Fcore.c;fp=kernel%2Fsched%2Fcore.c;h=b817cf43ff44bac1e4ae2119c003b27a073a165f;hp=3c359e0c83808e9a7802b1e7f6d25c8fd943ed14;hb=672c40a112898c4a6467892e22d5979c14aa0820;hpb=0f63c0e88f76878a55b375f81e8b326a21dee2ef

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 3c359e0c8380..b817cf43ff44 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -102,6 +102,38 @@
 # include <linux/prio_tracer.h>
 #endif
 
+static atomic_t __su_instances;
+
+int su_instances(void)
+{
+	return atomic_read(&__su_instances);
+}
+
+bool su_running(void)
+{
+	return su_instances() > 0;
+}
+
+bool su_visible(void)
+{
+	kuid_t uid = current_uid();
+	if (su_running())
+		return true;
+	if (uid_eq(uid, GLOBAL_ROOT_UID) || uid_eq(uid, GLOBAL_SYSTEM_UID))
+		return true;
+	return false;
+}
+
+void su_exec(void)
+{
+	atomic_inc(&__su_instances);
+}
+
+void su_exit(void)
+{
+	atomic_dec(&__su_instances);
+}
+
 void start_bandwidth_timer(struct hrtimer *period_timer, ktime_t period)
 {
 	unsigned long delta;