Rik van Riel e3fe70b1f7 sched/numa: Classify the NUMA topology of a system ... Smaller NUMA systems tend to have all NUMA nodes directly connected to each other. This includes the degenerate case of a system with just one node, ie. a non-NUMA system. Larger systems can have two kinds of NUMA topology, which affects how tasks and memory should be placed on the system. On glueless mesh systems, nodes that are not directly connected to each other will bounce traffic through intermediary nodes. Task groups can be run closer to each other by moving tasks from a node to an intermediary node between it and the task's preferred node. On NUMA systems with backplane controllers, the intermediary hops are incapable of running programs. This creates "islands" of nodes that are at an equal distance to anywhere else in the system. Each kind of topology requires a slightly different placement algorithm; this patch provides the mechanism to detect the kind of NUMA topology of a system. Signed-off-by: Rik van Riel <riel@redhat.com> Tested-by: Chegu Vinod <chegu_vinod@hp.com> [ Changed to use kernel/sched/sched.h ] Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: mgorman@suse.de Cc: chegu_vinod@hp.com Link: http://lkml.kernel.org/r/1413530994-9732-3-git-send-email-riel@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2014-10-28 10:47:48 +01:00
..
bpf	bpf: add search pruning optimization to verifier	2014-10-01 21:30:33 -04:00
configs
debug	kdb: replace strnicmp with strncasecmp	2014-10-14 02:18:25 +02:00
events	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
gcov	ARM: 8153/1: Enable gcov support on the ARM architecture	2014-09-26 14:39:57 +01:00
irq	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
locking	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 15:51:40 +02:00
power	Merge branch 'freezer'	2014-10-23 23:02:45 +02:00
printk	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
rcu	rcu: Eliminate deadlock between CPU hotplug and expedited grace periods	2014-09-18 16:22:27 -07:00
sched	sched/numa: Classify the NUMA topology of a system	2014-10-28 10:47:48 +01:00
time	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
trace	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 16:23:15 +02:00
.gitignore
acct.c	acct: eliminate compile warning	2014-10-09 22:26:04 -04:00
async.c	kernel/async.c: switch to pr_foo()	2014-10-09 22:26:04 -04:00
audit.c	Merge git://git.infradead.org/users/eparis/audit	2014-10-19 16:25:56 -07:00
audit.h	audit: reduce scope of audit_log_fcaps	2014-09-23 16:37:51 -04:00
audit_tree.c	audit: rename audit_log_remove_rule to disambiguate for trees	2014-10-10 15:30:25 -04:00
audit_watch.c	audit: invalid op= values for rules	2014-09-23 16:37:53 -04:00
auditfilter.c	Merge git://git.infradead.org/users/eparis/audit	2014-10-19 16:25:56 -07:00
auditsc.c	Merge git://git.infradead.org/users/eparis/audit	2014-10-19 16:25:56 -07:00
backtracetest.c
bounds.c
capability.c
cgroup.c	Merge branch 'for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-10 07:26:02 -04:00
cgroup_freezer.c
compat.c	compat: nanosleep: Clarify error handling	2014-09-06 12:58:18 +02:00
configs.c
context_tracking.c	sched: stop the unbound recursion in preempt_schedule_context()	2014-10-28 10:46:05 +01:00
cpu.c	rcu: Eliminate deadlock between CPU hotplug and expedited grace periods	2014-09-18 16:22:27 -07:00
cpu_pm.c
cpuset.c	Merge branch 'for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2014-10-10 07:24:40 -04:00
crash_dump.c	crash_dump: Make is_kdump_kernel() accessible from modules	2014-08-25 15:42:19 -07:00
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 16:23:15 +02:00
extable.c
fork.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 16:23:15 +02:00
freezer.c	freezer: remove obsolete comments in __thaw_task()	2014-10-21 23:44:20 +02:00
futex.c	futex: Ensure get_futex_key_refs() always implies a barrier	2014-10-18 09:28:51 -07:00
futex_compat.c
groups.c
hung_task.c
irq_work.c	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
jump_label.c
kallsyms.c	kernel/kallsyms.c: use __seq_open_private()	2014-10-14 02:18:16 +02:00
kcmp.c	kcmp: fix standard comparison bug	2014-09-10 15:42:12 -07:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c	kexec: remove the unused function parameter	2014-10-14 02:18:21 +02:00
kmod.c
kprobes.c
ksysfs.c
kthread.c	kernel/kthread.c: partial revert of 81c98869fa ("kthread: ensure locality of task_struct allocations")	2014-10-09 22:25:51 -04:00
latencytop.c
Makefile
module-internal.h
module.c	A single panic fix for a rare race, stable CC'd.	2014-10-18 10:24:26 -07:00
module_signing.c
notifier.c
nsproxy.c
padata.c
panic.c
params.c	kernel/param: consolidate __{start,stop}___param[] in <linux/moduleparam.h>	2014-10-14 02:18:28 +02:00
pid.c
pid_namespace.c
profile.c
ptrace.c
range.c
reboot.c	kernel: add support for kernel restart handler call chain	2014-09-26 00:00:06 -07:00
relay.c
res_counter.c
resource.c	x86: optimize resource lookups for ioremap	2014-10-14 02:18:22 +02:00
seccomp.c	Merge branch 'x86-seccomp-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-14 02:27:06 +02:00
signal.c
smp.c	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
smpboot.c
smpboot.h
softirq.c	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
stacktrace.c
stop_machine.c
sys.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 16:23:15 +02:00
sys_ni.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-10-08 21:40:54 -04:00
sysctl.c	sched/fair: Fix division by zero sysctl_numa_balancing_scan_size	2014-10-28 10:46:04 +01:00
sysctl_binary.c	dmaengine-3.17	2014-10-07 20:39:25 -04:00
system_certificates.S
system_keyring.c
task_work.c
taskstats.c	scheduler: Replace __get_cpu_var with this_cpu_ptr	2014-08-26 13:45:45 -04:00
test_kprobes.c
torture.c	torture: Address race in module cleanup	2014-09-16 13:41:06 -07:00
tracepoint.c
tsacct.c
uid16.c
up.c
user-return-notifier.c	scheduler: Replace __get_cpu_var with this_cpu_ptr	2014-08-26 13:45:45 -04:00
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
watchdog.c	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
workqueue.c	workqueue: Use cond_resched_rcu_qs macro	2014-10-06 05:58:26 -07:00
workqueue_internal.h