Patch "s390/topology: always use s390 specific sched_domain_topology_level" has been added to the 4.9-stable tree

Patch "s390/topology: always use s390 specific sched_domain_topology_level" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    s390/topology: always use s390 specific sched_domain_topology_level

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     s390-topology-always-use-s390-specific-sched_domain_topology_level.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From ebb299a51059017ec253bd30781a83d1f6e11b24 Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Sat, 3 Dec 2016 09:50:16 +0100
Subject: s390/topology: always use s390 specific sched_domain_topology_level

From: Heiko Carstens <heiko.carstens@de.ibm.com>

commit ebb299a51059017ec253bd30781a83d1f6e11b24 upstream.

The s390 specific sched_domain_topology_level should always be used,
not only if the machine provides topology information. Luckily this
odd behaviour, that was by accident introduced with git commit
d05d15da18f5 ("s390/topology: delay initialization of topology cpu
masks") has currently no side effect.

Fixes: d05d15da18f5 ("s390/topology: delay initialization of topology cpumasks")
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/s390/kernel/topology.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -448,6 +448,7 @@ static int __init s390_topology_init(voi
 	struct sysinfo_15_1_x *info;
 	int i;
 
+	set_sched_topology(s390_topology);
 	if (!MACHINE_HAS_TOPOLOGY)
 		return 0;
 	tl_info = (struct sysinfo_15_1_x *)__get_free_page(GFP_KERNEL);
@@ -460,7 +461,6 @@ static int __init s390_topology_init(voi
 	alloc_masks(info, &socket_info, 1);
 	alloc_masks(info, &book_info, 2);
 	alloc_masks(info, &drawer_info, 3);
-	set_sched_topology(s390_topology);
 	return 0;
 }
 early_initcall(s390_topology_init);


Patches currently in stable-queue which might be from heiko.carstens@de.ibm.com are

queue-4.9/s390-topology-always-use-s390-specific-sched_domain_topology_level.patch