linux-kernel - [RFC 08/16] kgr: sched.h, introduce kgr_task

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Date:	Wed, 30 Apr 2014 16:30:41 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	linux-kernel@...r.kernel.org
Cc:	jirislaby@...il.com, Vojtech Pavlik <vojtech@...e.cz>,
	Michael Matz <matz@...e.de>, Jiri Kosina <jkosina@...e.cz>,
	Jiri Slaby <jslaby@...e.cz>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>
Subject: [RFC 08/16] kgr: sched.h, introduce kgr_task_safe helper

To be used from some kthreads.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...hat.com>
---
 include/linux/sched.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 25f54c79f757..afd5747bc7ff 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2969,6 +2969,15 @@ static inline void mm_init_owner(struct mm_struct *mm, struct task_struct *p)
 }
 #endif /* CONFIG_MM_OWNER */
 
+#ifdef CONFIG_KGR
+static inline void kgr_task_safe(struct task_struct *p)
+{
+	task_thread_info(p)->kgr_in_progress = false;
+}
+#else
+static inline void kgr_task_safe(struct task_struct *p) { }
+#endif /* CONFIG_KGR */
+
 static inline unsigned long task_rlimit(const struct task_struct *tsk,
 		unsigned int limit)
 {
-- 
1.9.2

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