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>
48 lines
1.9 KiB
Diff
48 lines
1.9 KiB
Diff
From fe5869e78860a9150e24ea32c1a131da6af057c8 Mon Sep 17 00:00:00 2001
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Message-Id: <fe5869e78860a9150e24ea32c1a131da6af057c8.1527544850.git.Jim.Somerville@windriver.com>
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In-Reply-To: <b6ceef1c915827b50ce3f76da4dc47f3eb768b44.1527544850.git.Jim.Somerville@windriver.com>
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References: <b6ceef1c915827b50ce3f76da4dc47f3eb768b44.1527544850.git.Jim.Somerville@windriver.com>
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From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
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Date: Thu, 15 Dec 2016 15:37:47 -0800
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Subject: [PATCH 15/26] rcu: Don't wake rcuc/X kthreads on NOCB CPUs
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[ upstream 630c7ed9ca0608912fa7c8591d05dfc8742dc9e6 in tip repo ]
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Chris Friesen notice that rcuc/X kthreads were consuming CPU even on
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NOCB CPUs. This makes no sense because the only purpose or these
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kthreads is to invoke normal (non-offloaded) callbacks, of which there
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will never be any on NOCB CPUs. This problem was due to a bug in
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cpu_has_callbacks_ready_to_invoke(), which should have been checking
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->nxttail[RCU_NEXT_TAIL] for NULL, but which was instead (incorrectly)
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checking ->nxttail[RCU_DONE_TAIL]. Because ->nxttail[RCU_DONE_TAIL] is
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never NULL, the only effect is to cause the rcuc/X kthread to execute
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when it should not do so.
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This commit therefore checks ->nxttail[RCU_NEXT_TAIL], which is NULL
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for NOCB CPUs.
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Reported-by: Chris Friesen <chris.friesen@windriver.com>
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Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Reviewed-by: Josh Triplett <josh@joshtriplett.org>
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Signed-off-by: Jim Somerville <Jim.Somerville@windriver.com>
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---
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kernel/rcutree.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/kernel/rcutree.c b/kernel/rcutree.c
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index cd68fe3..3276ac1 100644
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--- a/kernel/rcutree.c
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+++ b/kernel/rcutree.c
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@@ -300,7 +300,7 @@ static int
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cpu_has_callbacks_ready_to_invoke(struct rcu_data *rdp)
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{
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return &rdp->nxtlist != rdp->nxttail[RCU_DONE_TAIL] &&
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- rdp->nxttail[RCU_DONE_TAIL] != NULL;
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+ rdp->nxttail[RCU_NEXT_TAIL] != NULL;
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}
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/*
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--
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1.8.3.1
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