From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Sun, 28 Dec 2014 14:08:41 +0000 (-0500)
Subject: Fix: update sched instrumentation for 3.19+ kernels
X-Git-Tag: v2.6.0~3
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=2a5c234d1afcc98b07a349e919284ae8148d672d;p=lttng-modules.git

Fix: update sched instrumentation for 3.19+ kernels

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/instrumentation/events/lttng-module/sched.h b/instrumentation/events/lttng-module/sched.h
index 6b3b0335..1bea3261 100644
--- a/instrumentation/events/lttng-module/sched.h
+++ b/instrumentation/events/lttng-module/sched.h
@@ -15,7 +15,27 @@
 #ifndef _TRACE_SCHED_DEF_
 #define _TRACE_SCHED_DEF_
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0))
+
+static inline long __trace_sched_switch_state(struct task_struct *p)
+{
+	long state = p->state;
+
+#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_SCHED_DEBUG
+	BUG_ON(p != current);
+#endif /* CONFIG_SCHED_DEBUG */
+	/*
+	 * For all intents and purposes a preempted task is a running task.
+	 */
+	if (preempt_count() & PREEMPT_ACTIVE)
+		state = TASK_RUNNING | TASK_STATE_MAX;
+#endif	/* CONFIG_PREEMPT */
+
+	return state;
+}
+
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))
 
 static inline long __trace_sched_switch_state(struct task_struct *p)
 {