linux-kernel - [PATCH] sched: correct SD_flags returned by tl->sd

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Message-ID: <20200609150936.GA13060@iZj6chx1xj0e0buvshuecpZ>
Date:   Tue, 9 Jun 2020 23:09:36 +0800
From:   Peng Liu <iwtbavbm@...il.com>
To:     mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
        linux-kernel@...r.kernel.org
Cc:     iwtbavbm@...il.com
Subject: [PATCH] sched: correct SD_flags returned by tl->sd_flags()

During sched domain init, we check whether non-topological SD_flags are
returned by tl->sd_flags(), if found, fire a waning and correct the
violation, but the code failed to correct the violation. Correct this.

Fixes: 143e1e28cb40 ("sched: Rework sched_domain topology definition")
Signed-off-by: Peng Liu <iwtbavbm@...il.com>
---
 kernel/sched/topology.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
index ba81187bb7af..9079d865a935 100644
--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -1328,7 +1328,7 @@ sd_init(struct sched_domain_topology_level *tl,
 		sd_flags = (*tl->sd_flags)();
 	if (WARN_ONCE(sd_flags & ~TOPOLOGY_SD_FLAGS,
 			"wrong sd_flags in topology description\n"))
-		sd_flags &= ~TOPOLOGY_SD_FLAGS;
+		sd_flags &= TOPOLOGY_SD_FLAGS;
 
 	/* Apply detected topology flags */
 	sd_flags |= dflags;
-- 
2.20.1