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Mel Gorman b726b7dfb4 Revert "mm: sched: numa: Delay PTE scanning until a task is scheduled on a new node" 
PTE scanning and NUMA hinting fault handling is expensive so commit
5bca2303 ("mm: sched: numa: Delay PTE scanning until a task is scheduled
on a new node") deferred the PTE scan until a task had been scheduled on
another node. The problem is that in the purely shared memory case that
this may never happen and no NUMA hinting fault information will be
captured. We are not ruling out the possibility that something better
can be done here but for now, this patch needs to be reverted and depend
entirely on the scan_delay to avoid punishing short-lived processes.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1381141781-10992-16-git-send-email-mgorman@suse.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 		2013-10-09 12:40:17 +02:00
..
Makefile sched: Factor out load calculation code from sched/core.c --> sched/proc.c 2013-05-07 13:14:50 +02:00
auto_group.c sched/autogroup: Fix race with task_groups list 2013-05-28 09:40:22 +02:00
auto_group.h
…
clock.c
…
core.c sched: Prepare for per-cpu preempt_count 2013-09-25 14:07:55 +02:00
cpuacct.c cgroup: pass around cgroup_subsys_state instead of cgroup in file methods 2013-08-08 20:11:24 -04:00
cpuacct.h
…
cpupri.c sched: Fix some kernel-doc warnings 2013-07-18 09:58:21 +02:00
cpupri.h
…
cputime.c Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-09-05 12:36:46 -07:00
debug.c sched/debug: Take PID namespace into account 2013-09-12 19:14:16 +02:00
fair.c Revert "mm: sched: numa: Delay PTE scanning until a task is scheduled on a new node" 2013-10-09 12:40:17 +02:00
features.h Revert "mm: sched: numa: Delay PTE scanning until a task is scheduled on a new node" 2013-10-09 12:40:17 +02:00
idle_task.c sched: Keep at least 1 tick per second for active dynticks tasks 2013-05-04 08:32:02 +02:00
proc.c sched: Change get_rq_runnable_load() to static and inline 2013-06-27 10:07:44 +02:00
rt.c sched/rt: Remove redundant nr_cpus_allowed test 2013-10-06 11:28:40 +02:00
sched.h sched/balancing: Consider max cost of idle balance per sched domain 2013-09-20 12:03:44 +02:00
stats.c fix a leak in /proc/schedstats 2013-04-29 15:41:45 -04:00
stats.h sched: Micro-optimize by dropping unnecessary task_rq() calls 2013-09-25 13:51:06 +02:00
stop_task.c sched: Use an accessor to read the rq clock 2013-05-28 09:40:27 +02:00