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From: Peng Liu <>
Subject: [PATCH] sched: correct SD_flags returned by tl->sd_flags()
Date: Tue, 9 Jun 2020 23:09:36 +0800
Message-ID: <20200609150936.GA13060@iZj6chx1xj0e0buvshuecpZ> (raw)

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 <>
 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;

             reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-09 15:09 Peng Liu [this message]
2020-06-09 15:43 ` Vincent Guittot
2020-06-10 10:03 ` Valentin Schneider
2020-06-16 12:21 ` [tip: sched/core] " tip-bot2 for Peng Liu

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