bab9bb6b69
Create new directories:
ceph
config
config-files
filesystem
kernel
kernel/kernel-modules
ldap
logging
strorage-drivers
tools
utilities
virt
Retire directories:
connectivity
core
devtools
support
extended
Delete two packages:
tgt
irqbalance
Relocated packages:
base/
dhcp
initscripts
libevent
lighttpd
linuxptp
memcached
net-snmp
novnc
ntp
openssh
pam
procps
sanlock
shadow
sudo
systemd
util-linux
vim
watchdog
ceph/
python-cephclient
config/
facter
puppet-4.8.2
puppet-modules
filesystem/
e2fsprogs
nfs-utils
nfscheck
kernel/
kernel-std
kernel-rt
kernel/kernel-modules/
mlnx-ofa_kernel
ldap/
nss-pam-ldapd
openldap
logging/
syslog-ng
logrotate
networking/
lldpd
iproute
mellanox
python-ryu
mlx4-config
python/
python-2.7.5
python-django
python-gunicorn
python-setuptools
python-smartpm
python-voluptuous
security/
shim-signed
shim-unsigned
tboot
strorage-drivers/
python-3parclient
python-lefthandclient
virt/
cloud-init
libvirt
libvirt-python
qemu
tools/
storage-topology
vm-topology
utilities/
tis-extensions
namespace-utils
nova-utils
update-motd
Change-Id: I37ade764d873c701b35eac5881eb40412ba64a86
Story: 2002801
Task: 22687
Signed-off-by: Scott Little <scott.little@windriver.com>
74 lines
2.7 KiB
Diff
74 lines
2.7 KiB
Diff
From 1584ae45f750efec21265fb0b8ac6a02975dfb76 Mon Sep 17 00:00:00 2001
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Message-Id: <1584ae45f750efec21265fb0b8ac6a02975dfb76.1528226387.git.Jim.Somerville@windriver.com>
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In-Reply-To: <c8270e79f6b7008fde44b8d5aa6314d8cf89d3ed.1528226387.git.Jim.Somerville@windriver.com>
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References: <c8270e79f6b7008fde44b8d5aa6314d8cf89d3ed.1528226387.git.Jim.Somerville@windriver.com>
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From: Chris Friesen <chris.friesen@windriver.com>
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Date: Tue, 24 Nov 2015 16:27:29 -0500
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Subject: [PATCH 05/32] Affine irqs and workqueues with kthread_cpus
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If the kthread_cpus boot arg is set it means we want to affine
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kernel threads to the specified CPU mask as much as possible
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in order to avoid doing work on other CPUs.
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In this commit we extend the meaning of that boot arg to also
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apply to the CPU affinity of unbound and ordered workqueues.
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We also use the kthread_cpus value to determine the default irq
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affinity. Specifically, as long as the previously-calculated
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irq affinity intersects with the kthread_cpus affinity then we'll
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use the intersection of the two as the default irq affinity.
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Signed-off-by: Chris Friesen <chris.friesen@windriver.com>
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[VT: replacing spaces with tabs. Performed tests]
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Signed-off-by: Vu Tran <vu.tran@windriver.com>
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Signed-off-by: Jim Somerville <Jim.Somerville@windriver.com>
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---
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kernel/irq/manage.c | 7 +++++++
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kernel/workqueue.c | 4 ++++
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2 files changed, 11 insertions(+)
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diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
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index bd59426..bad147c 100644
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--- a/kernel/irq/manage.c
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+++ b/kernel/irq/manage.c
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@@ -404,6 +404,13 @@ setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask)
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if (cpumask_intersects(mask, nodemask))
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cpumask_and(mask, mask, nodemask);
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}
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+
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+ /* This will narrow down the affinity further if we've specified
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+ * a reduced cpu_kthread_mask in the boot args.
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+ */
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+ if (cpumask_intersects(mask, cpu_kthread_mask))
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+ cpumask_and(mask, mask, cpu_kthread_mask);
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+
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irq_do_set_affinity(&desc->irq_data, mask, false);
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return 0;
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}
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diff --git a/kernel/workqueue.c b/kernel/workqueue.c
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index 986e283..7160e71 100644
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--- a/kernel/workqueue.c
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+++ b/kernel/workqueue.c
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@@ -5466,6 +5466,8 @@ static int __init init_workqueues(void)
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BUG_ON(!(attrs = alloc_workqueue_attrs(GFP_KERNEL)));
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attrs->nice = std_nice[i];
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+ /* If we've specified a kthread mask apply it here too. */
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+ cpumask_copy(attrs->cpumask, cpu_kthread_mask);
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unbound_std_wq_attrs[i] = attrs;
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/*
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@@ -5476,6 +5478,8 @@ static int __init init_workqueues(void)
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BUG_ON(!(attrs = alloc_workqueue_attrs(GFP_KERNEL)));
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attrs->nice = std_nice[i];
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attrs->no_numa = true;
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+ /* If we've specified a kthread mask apply it here too. */
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+ cpumask_copy(attrs->cpumask, cpu_kthread_mask);
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ordered_wq_attrs[i] = attrs;
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}
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--
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1.8.3.1
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