Mel Gorman dd1a239f6f mm: have zonelist contains structs with both a zone pointer and zone_idx ... Filtering zonelists requires very frequent use of zone_idx(). This is costly as it involves a lookup of another structure and a substraction operation. As the zone_idx is often required, it should be quickly accessible. The node idx could also be stored here if it was found that accessing zone->node is significant which may be the case on workloads where nodemasks are heavily used. This patch introduces a struct zoneref to store a zone pointer and a zone index. The zonelist then consists of an array of these struct zonerefs which are looked up as necessary. Helpers are given for accessing the zone index as well as the node index. [kamezawa.hiroyu@jp.fujitsu.com: Suggested struct zoneref instead of embedding information in pointers] [hugh@veritas.com: mm-have-zonelist: fix memcg ooms] [hugh@veritas.com: just return do_try_to_free_pages] [hugh@veritas.com: do_try_to_free_pages gfp_mask redundant] Signed-off-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Christoph Lameter <clameter@sgi.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Christoph Lameter <clameter@sgi.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-04-28 08:58:18 -07:00
..
irq	cpumask: Cleanup more uses of CPU_MASK and NODE_MASK	2008-04-19 19:44:58 +02:00
power	Merge branches 'release' and 'doc' into release	2008-03-13 01:59:53 -04:00
time	softlockup: fix NOHZ wakeup	2008-04-25 00:25:08 +02:00
.gitignore	Update kernel/.gitignore with new auto-generated files	2008-02-09 23:27:01 -08:00
Kconfig.hz	sched: high-res preemption tick	2008-01-25 21:08:29 +01:00
Kconfig.preempt	rcu: move PREEMPT_RCU config option back under PREEMPT	2008-03-10 18:01:20 -07:00
Makefile	Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-kgdb	2008-04-18 08:37:01 -07:00
acct.c	bsd_acct: using task_struct->tgid is not right in pid-namespaces	2008-03-24 19:22:20 -07:00
audit.c	Audit: internally use the new LSM audit hooks	2008-04-19 09:52:37 +10:00
audit.h	SELinux: use new audit hooks, remove redundant exports	2008-04-19 09:53:46 +10:00
audit_tree.c	Introduce path_put()	2008-02-14 21:13:33 -08:00
auditfilter.c	Audit: Final renamings and cleanup	2008-04-19 09:59:43 +10:00
auditsc.c	Audit: Final renamings and cleanup	2008-04-19 09:59:43 +10:00
backtracetest.c	x86: add a simple backtrace test module	2008-01-30 13:33:08 +01:00
capability.c	Add 64-bit capability support to the kernel	2008-02-05 09:44:20 -08:00
cgroup.c	cgroup: fix a race condition in manipulating tsk->cg_list	2008-04-18 08:17:57 -07:00
cgroup_debug.c	Task Control Groups: simple task cgroup debug info subsystem	2007-10-19 11:53:36 -07:00
compat.c	generic: reduce stack pressure in sched_affinity	2008-04-19 19:44:59 +02:00
configs.c	use simple_read_from_buffer in kernel/	2007-05-09 12:30:49 -07:00
cpu.c	generic: use new set_cpus_allowed_ptr function	2008-04-19 19:44:58 +02:00
cpuset.c	mm: have zonelist contains structs with both a zone pointer and zone_idx	2008-04-28 08:58:18 -07:00
delayacct.c	Add scaled time to taskstats based process accounting	2007-10-18 14:37:28 -07:00
dma.c	whitespace fixes: DMA channel allocator	2007-10-18 14:37:24 -07:00
exec_domain.c	whitespace fixes: execution domains	2007-10-18 14:37:26 -07:00
exit.c	[PATCH] sanitize unshare_files/reset_files_struct	2008-04-25 09:23:59 -04:00
extable.c	module: Don't report discarded init pages as kernel text.	2008-01-29 17:13:18 +11:00
fork.c	s390: KVM preparation: provide hook to enable pgstes in user pagetable	2008-04-27 12:00:40 +03:00
futex.c	NULL noise: fs/*, mm/*, kernel/*	2008-03-30 14:18:41 -07:00
futex_compat.c	futex_compat __user annotation	2008-03-30 14:18:41 -07:00
hrtimer.c	hrtimer: optimize the softirq time optimization	2008-04-21 07:59:51 +02:00
itimer.c	ITIMER_REAL: convert to use struct pid	2008-02-08 09:22:29 -08:00
kallsyms.c	remove support for un-needed _extratext section	2008-02-06 10:41:01 -08:00
kexec.c	kernel: Remove unnecessary inclusions of asm/semaphore.h	2008-04-18 22:17:04 -04:00
kfifo.c	is_power_of_2: kernel/kfifo.c	2007-07-16 09:05:50 -07:00
kgdb.c	kgdb: always use icache flush for sw breakpoints	2008-04-17 20:05:43 +02:00
kmod.c	generic: use new set_cpus_allowed_ptr function	2008-04-19 19:44:58 +02:00
kprobes.c	kprobes: fix a null pointer bug in register_kretprobe()	2008-03-04 16:35:19 -08:00
ksysfs.c	Kobject: convert remaining kobject_unregister() to kobject_put()	2008-01-24 20:40:40 -08:00
kthread.c	Merge branch 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc	2008-04-21 15:41:27 -07:00
latencytop.c	latencytop: optimize LT_BACKTRACEDEPTH loops a bit	2008-04-19 19:44:57 +02:00
lockdep.c	Subject: lockdep: include all lock classes in all_lock_classes	2008-02-25 23:03:02 +01:00
lockdep_internals.h	…
lockdep_proc.c	lockdep: Avoid /proc/lockdep & lock_stat infinite output	2007-10-11 22:11:11 +02:00
marker.c	markers: use synchronize_sched()	2008-04-02 15:28:19 -07:00
module.c	kernel: Remove unnecessary inclusions of asm/semaphore.h	2008-04-18 22:17:04 -04:00
mutex-debug.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
mutex-debug.h	…
mutex.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
mutex.h	…
notifier.c	kernel/notifier.c should #include <linux/reboot.h>	2008-02-06 10:41:02 -08:00
ns_cgroup.c	cgroups: implement namespace tracking subsystem	2007-10-19 11:53:37 -07:00
nsproxy.c	namespaces: move the IPC namespace under IPC_NS option	2008-02-08 09:22:23 -08:00
panic.c	ACPI: Taint kernel on ACPI table override (format corrected)	2008-02-06 22:07:51 -05:00
params.c	Add new string functions strict_strto* and convert kernel params to use them	2008-02-08 09:22:41 -08:00
pid.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
pid_namespace.c	namespaces: cleanup the code managed with PID_NS option	2008-02-08 09:22:23 -08:00
pm_qos_params.c	pm qos infrastructure and interface	2008-02-05 09:44:22 -08:00
posix-cpu-timers.c	posix-timers: fix shadowed variables	2008-04-17 12:22:30 +02:00
posix-timers.c	kernel: Remove unnecessary inclusions of asm/semaphore.h	2008-04-18 22:17:04 -04:00
printk.c	Fix locking bug in "acquire_console_semaphore_for_printk()"	2008-04-15 13:09:54 -07:00
profile.c	kernel: Remove unnecessary inclusions of asm/semaphore.h	2008-04-18 22:17:04 -04:00
ptrace.c	ptrace: compat_ptrace_request siginfo	2008-04-21 15:53:41 -07:00
rcuclassic.c	Preempt-RCU: implementation	2008-01-25 21:08:24 +01:00
rcupdate.c	rcupdate: fix comment	2008-02-13 16:21:18 -08:00
rcupreempt.c	generic: reduce stack pressure in sched_affinity	2008-04-19 19:44:59 +02:00
rcupreempt_trace.c	Preempt-RCU: implementation	2008-01-25 21:08:24 +01:00
rcutorture.c	generic: use new set_cpus_allowed_ptr function	2008-04-19 19:44:58 +02:00
relay.c	relay: set an spd_release() hook for splice	2008-03-26 12:04:09 +01:00
res_counter.c	Memory Resource Controller use strstrip while parsing arguments	2008-03-04 16:35:09 -08:00
resource.c	PCI: clean up resource alignment management	2008-04-20 21:47:08 -07:00
rtmutex-debug.c	Don't operate with pid_t in rtmutex tester	2008-02-08 09:22:41 -08:00
rtmutex-debug.h	…
rtmutex-tester.c	Driver core: change sysdev classes to use dynamic kobject names	2008-01-24 20:40:40 -08:00
rtmutex.c	hrtimer: more hrtimer_init_sleeper() fallout.	2008-02-13 15:45:36 +01:00
rtmutex.h	…
rtmutex_common.h	Don't operate with pid_t in rtmutex tester	2008-02-08 09:22:41 -08:00
rwsem.c	sched: mark rwsem functions as __sched for wchan/profiling	2007-12-18 15:21:13 +01:00
sched.c	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6	2008-04-25 12:50:00 -07:00
sched_debug.c	sched: build fix	2008-04-19 19:45:01 +02:00
sched_fair.c	sched: debug: show a weight tree	2008-04-19 19:45:00 +02:00
sched_features.h	sched: /debug/sched_features	2008-04-19 19:45:00 +02:00
sched_idletask.c	sched: high-res preemption tick	2008-01-25 21:08:29 +01:00
sched_rt.c	sched: rt-group: optimize dequeue_rt_stack	2008-04-19 19:45:00 +02:00
sched_stats.h	cpumask: use new cpus_scnprintf function	2008-04-19 19:44:59 +02:00
seccomp.c	make seccomp zerocost in schedule	2007-07-16 09:05:50 -07:00
semaphore.c	Improve semaphore documentation	2008-04-17 10:43:01 -04:00
signal.c	trivial: small cleanups	2008-04-21 22:15:06 +00:00
softirq.c	tasklets: execute tasklets in the same order they were queued	2008-04-19 19:44:58 +02:00
softlockup.c	softlockup: fix task state setting	2008-02-29 18:46:53 +01:00
spinlock.c	spinlock: lockbreak cleanup	2008-01-30 13:31:20 +01:00
srcu.c	make srcu_readers_active() static	2008-02-06 10:41:02 -08:00
stacktrace.c	…
stop_machine.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial	2008-04-21 16:36:46 -07:00
sys.c	generic, x86: add prctl commands PR_GET_TSC and PR_SET_TSC	2008-04-19 19:19:55 +02:00
sys_ni.c	timerfd: new timerfd API	2008-02-05 09:44:07 -08:00
sysctl.c	sched: rt-group: synchonised bandwidth period	2008-04-19 19:44:57 +02:00
sysctl_check.c	constify tables in kernel/sysctl_check.c	2008-02-08 09:22:31 -08:00
taskstats.c	kernel/taskstats.c: fix bogus nlmsg_free()	2007-11-14 18:45:44 -08:00
test_kprobes.c	kprobes: kretprobe user entry-handler	2008-02-06 10:41:11 -08:00
time.c	time: Export set_normalized_timespec.	2008-04-21 19:45:12 -07:00
timeconst.pl	timeconst.pl: correct reversal of USEC_TO_HZ and HZ_TO_USEC	2008-02-12 14:29:26 -08:00
timer.c	timers: simplify lockdep handling	2008-04-17 12:22:31 +02:00
tsacct.c	Add scaled time to taskstats based process accounting	2007-10-18 14:37:28 -07:00
uid16.c	asmlinkage_protect replaces prevent_tail_call	2008-04-10 17:28:26 -07:00
user.c	sched: fix the task_group hierarchy for UID grouping	2008-04-19 19:45:00 +02:00
user_namespace.c	namespaces: cleanup the code managed with the USER_NS option	2008-02-08 09:22:23 -08:00
utsname.c	Fix UTS corruption during clone(CLONE_NEWUTS)	2007-09-19 11:24:17 -07:00
utsname_sysctl.c	Isolate the UTS namespace's domainname and hostname back	2007-11-29 09:24:53 -08:00
wait.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
workqueue.c	timer_list: add annotations to workqueue.c	2008-04-17 12:22:30 +02:00