linux-kernel - [tip: sched/core] sched/topology: Mark SD_ASYM_PACKING as SDF_NEEDS

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Date:   Wed, 19 Aug 2020 14:02:43 -0000
From:   "tip-bot2 for Valentin Schneider" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Valentin Schneider <valentin.schneider@....com>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: sched/core] sched/topology: Mark SD_ASYM_PACKING as SDF_NEEDS_GROUPS

The following commit has been merged into the sched/core branch of tip:

Commit-ID:     33199b0143daf4778d6301f966cb914d75f122eb
Gitweb:        https://git.kernel.org/tip/33199b0143daf4778d6301f966cb914d75f122eb
Author:        Valentin Schneider <valentin.schneider@....com>
AuthorDate:    Mon, 17 Aug 2020 12:30:00 +01:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Wed, 19 Aug 2020 10:49:49 +02:00

sched/topology: Mark SD_ASYM_PACKING as SDF_NEEDS_GROUPS

Being a load-balancing flag, it requires 2+ groups to have any effect.

Signed-off-by: Valentin Schneider <valentin.schneider@....com>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: https://lore.kernel.org/r/20200817113003.20802-15-valentin.schneider@arm.com
---
 include/linux/sched/sd_flags.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/include/linux/sched/sd_flags.h b/include/linux/sched/sd_flags.h
index b7f4d80..2998ece 100644
--- a/include/linux/sched/sd_flags.h
+++ b/include/linux/sched/sd_flags.h
@@ -123,10 +123,11 @@ SD_FLAG(SD_SERIALIZE, SDF_SHARED_PARENT | SDF_NEEDS_GROUPS)
  * Place busy tasks earlier in the domain
  *
  * SHARED_CHILD: Usually set on the SMT level. Technically could be set further
- * up, but currently assumed to be set from the base domain upwards (see
- * update_top_cache_domain()).
+ *               up, but currently assumed to be set from the base domain
+ *               upwards (see update_top_cache_domain()).
+ * NEEDS_GROUPS: Load balancing flag.
  */
-SD_FLAG(SD_ASYM_PACKING, SDF_SHARED_CHILD)
+SD_FLAG(SD_ASYM_PACKING, SDF_SHARED_CHILD | SDF_NEEDS_GROUPS)
 
 /*
  * Prefer to place tasks in a sibling domain