linux-kernel - [RFC PATCH 1/7] sched: Add WF_TTWU, WF

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Message-Id: <20191211164401.5013-2-valentin.schneider@arm.com>
Date:   Wed, 11 Dec 2019 16:43:55 +0000
From:   Valentin Schneider <valentin.schneider@....com>
To:     linux-kernel@...r.kernel.org
Cc:     mingo@...hat.com, peterz@...radead.org, vincent.guittot@...aro.org,
        dietmar.eggemann@....com, Juri Lelli <juri.lelli@...hat.com>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: [RFC PATCH 1/7] sched: Add WF_TTWU, WF_EXEC wakeup flags

To remove the sd_flag parameter of select_task_rq(), we need another way of
encoding wakeup kinds. There already is a WF_FORK flag, add the missing
ones.

Cc: Ingo Molnar <mingo@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Juri Lelli <juri.lelli@...hat.com>
Cc: Vincent Guittot <vincent.guittot@...aro.org>
Cc: Dietmar Eggemann <dietmar.eggemann@....com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Signed-off-by: Valentin Schneider <valentin.schneider@....com>
---
 kernel/sched/sched.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 280a3c735935..1936ab2faff0 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1639,11 +1639,13 @@ static inline int task_on_rq_migrating(struct task_struct *p)
 }
 
 /*
- * wake flags
+ * Wake flags
  */
 #define WF_SYNC			0x01		/* Waker goes to sleep after wakeup */
-#define WF_FORK			0x02		/* Child wakeup after fork */
-#define WF_MIGRATED		0x4		/* Internal use, task got migrated */
+#define WF_TTWU                 0x02            /* Regular task wakeup */
+#define WF_FORK			0x04		/* Child wakeup after fork */
+#define WF_EXEC			0x08		/* "Fake" wakeup at exec */
+#define WF_MIGRATED		0x10		/* Internal use, task got migrated */
 
 /*
  * To aid in avoiding the subversion of "niceness" due to uneven distribution
-- 
2.24.0