linux-kernel - [PATCH V2 1/2] sched/deadline: Fixes a comment: dl_bw = dl_runtime / dl

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Message-Id: <8d05f1ccfd02da1a11bda62494d98f5456c1469a.1495803804.git.bristot@redhat.com>
Date:   Mon, 29 May 2017 16:24:02 +0200
From:   Daniel Bristot de Oliveira <bristot@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Xunlei Pang <xpang@...hat.com>, Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Luca Abeni <luca.abeni@...tannapisa.it>,
        Tommaso Cucinotta <tommaso.cucinotta@...up.it>,
        Romulo Silva de Oliveira <romulo.deoliveira@...c.br>
Subject: [PATCH V2 1/2] sched/deadline: Fixes a comment: dl_bw = dl_runtime / dl_period

The sched_dl_entity's dl_bw variable stores the utilization (dl_runtime
/ dl_period) of a task, not its density (dl_runtime / dl_deadline), as
the comment says.

Signed-off-by: Daniel Bristot de Oliveira <bristot@...hat.com>
Cc: Xunlei Pang <xpang@...hat.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Juri Lelli <juri.lelli@....com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Luca Abeni <luca.abeni@...tannapisa.it>
Cc: Tommaso Cucinotta <tommaso.cucinotta@...up.it>
Cc: Romulo Silva de Oliveira <romulo.deoliveira@...c.br>
Cc: linux-kernel@...r.kernel.org
---
 include/linux/sched.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 2b69fc6..9778546 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -421,7 +421,7 @@ struct sched_dl_entity {
 	u64				dl_runtime;	/* Maximum runtime for each instance	*/
 	u64				dl_deadline;	/* Relative deadline of each instance	*/
 	u64				dl_period;	/* Separation of two instances (period) */
-	u64				dl_bw;		/* dl_runtime / dl_deadline		*/
+	u64				dl_bw;		/* dl_runtime / dl_period		*/
 
 	/*
 	 * Actual scheduling parameters. Initialized with the values above,
-- 
2.5.5