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meta-ti/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.21/0015-sched-Fix-the-relax_domain_level-boot-parameter.patch
Koen Kooi 189ce92b4c linux-ti33x-psp 3.2: update to 3.2.21, add libertas fixes
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Denys Dmytriyenko <denys@ti.com>
2012-07-25 20:23:44 -04:00

66 lines
2.1 KiB
Diff

From 701bbc54cf5b05f981bd595a0662317d4d7576fc Mon Sep 17 00:00:00 2001
From: Dimitri Sivanich <sivanich@sgi.com>
Date: Tue, 5 Jun 2012 13:44:36 -0500
Subject: [PATCH 15/67] sched: Fix the relax_domain_level boot parameter
commit a841f8cef4bb124f0f5563314d0beaf2e1249d72 upstream.
It does not get processed because sched_domain_level_max is 0 at the
time that setup_relax_domain_level() is run.
Simply accept the value as it is, as we don't know the value of
sched_domain_level_max until sched domain construction is completed.
Fix sched_relax_domain_level in cpuset. The build_sched_domain() routine calls
the set_domain_attribute() routine prior to setting the sd->level, however,
the set_domain_attribute() routine relies on the sd->level to decide whether
idle load balancing will be off/on.
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20120605184436.GA15668@sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[bwh: Backported to 3.2: adjust the filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
kernel/sched.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/kernel/sched.c b/kernel/sched.c
index 299f55c..576a27f 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -7429,11 +7429,8 @@ int sched_domain_level_max;
static int __init setup_relax_domain_level(char *str)
{
- unsigned long val;
-
- val = simple_strtoul(str, NULL, 0);
- if (val < sched_domain_level_max)
- default_relax_domain_level = val;
+ if (kstrtoint(str, 0, &default_relax_domain_level))
+ pr_warn("Unable to set relax_domain_level\n");
return 1;
}
@@ -7636,7 +7633,6 @@ struct sched_domain *build_sched_domain(struct sched_domain_topology_level *tl,
if (!sd)
return child;
- set_domain_attribute(sd, attr);
cpumask_and(sched_domain_span(sd), cpu_map, tl->mask(cpu));
if (child) {
sd->level = child->level + 1;
@@ -7644,6 +7640,7 @@ struct sched_domain *build_sched_domain(struct sched_domain_topology_level *tl,
child->parent = sd;
}
sd->child = child;
+ set_domain_attribute(sd, attr);
return sd;
}
--
1.7.9.5