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Filename Latest commit message Latest commit date
Paul Jackson 04c19fa6f1 [PATCH] cpuset: migrate all tasks in cpuset at once 
Given the mechanism in the previous patch to handle rebinding the per-vma
mempolicies of all tasks in a cpuset that changes its memory placement, it is
now easier to handle the page migration requirements of such tasks at the same
time.

The previous code didn't actually attempt to migrate the pages of the tasks in
a cpuset whose memory placement changed until the next time each such task
tried to allocate memory.  This was undesirable, as users invoking memory page
migration exected to happen when the placement changed, not some unspecified
time later when the task needed more memory.

It is now trivial to handle the page migration at the same time as the per-vma
rebinding is done.

The routine cpuset.c:update_nodemask(), which handles changing a cpusets
memory placement ('mems') now checks for the special case of being asked to
write a placement that is the same as before.  It was harmless enough before
to just recompute everything again, even though nothing had changed.  But page
migration is a heavy weight operation - moving pages about.  So now it is
worth avoiding that if asked to move a cpuset to its current location.

Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:13:44 -08:00
..
irq [PATCH] Alpha: convert to generic irq framework (generic part) 2006-01-06 08:33:40 -08:00
power [PATCH] swsusp: save image header first 2006-01-06 08:33:43 -08:00
.gitignore gitignore: ignore more generated files 2006-01-03 11:35:26 +01:00
acct.c [PATCH] s390: cputime_t fixes 2006-01-06 08:33:49 -08:00
audit.c [PATCH] Add try_to_freeze to kauditd 2005-12-12 08:57:43 -08:00
auditsc.c [PATCH] gfp_t: kernel/* 2005-10-28 08:16:49 -07:00
capability.c [PATCH] kernel/capability.c: add kerneldoc 2005-07-27 16:26:06 -07:00
compat.c [PATCH] kernel: fix-up schedule_timeout() usage 2005-09-10 10:06:37 -07:00
configs.c update the email address of Randy Dunlap 2006-01-03 13:37:51 +01:00
cpu.c [PATCH] clean up lock_cpu_hotplug() in cpufreq 2005-11-28 14:42:23 -08:00
cpuset.c [PATCH] cpuset: migrate all tasks in cpuset at once 2006-01-08 20:13:44 -08:00
crash_dump.c [PATCH] kernel/crash_dump.c: add kerneldoc 2005-07-27 16:26:06 -07:00
dma.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
exec_domain.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
exit.c [PATCH] RCU signal handling 2006-01-08 20:13:40 -08:00
extable.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fork.c [PATCH] cpuset: fork hook fix 2006-01-08 20:13:43 -08:00
futex.c [PATCH] FRV: Make futex code compilable on nommu [try #2] 2006-01-06 08:33:33 -08:00
intermodule.c [PATCH] introduce and use kzalloc 2005-09-07 16:57:45 -07:00
itimer.c [PATCH] itimer fixes 2005-07-27 16:25:51 -07:00
kallsyms.c [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00
Kconfig.hz [PATCH] i386: Selectable Frequency of the Timer Interrupt 2005-06-23 09:45:10 -07:00
Kconfig.preempt [PATCH] sched: voluntary kernel preemption 2005-06-25 16:24:45 -07:00
kexec.c [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
kfifo.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
kmod.c [PATCH] Keys: Get rid of warning in kmod.c if keys disabled 2005-10-30 17:37:23 -08:00
kprobes.c [PATCH] kprobes: increment kprobe missed count for multiprobes 2005-12-12 08:57:45 -08:00
ksysfs.c [PATCH] kobject_uevent CONFIG_NET=n fix 2006-01-04 16:18:08 -08:00
kthread.c [PATCH] Add kthread_stop_sem() 2005-10-30 17:37:17 -08:00
Makefile [PATCH] RCU torture-testing kernel module 2005-10-30 17:37:27 -08:00
module.c [PATCH] kernel/module.c: removed dead code 2006-01-06 08:33:59 -08:00
panic.c [PATCH] s390: cleanup Kconfig 2006-01-06 08:33:53 -08:00
params.c [PATCH] kernel/params.c: fix sysfs access with CONFIG_MODULES=n 2005-12-20 10:31:33 -08:00
pid.c [PATCH] RCU signal handling 2006-01-08 20:13:40 -08:00
posix-cpu-timers.c [PATCH] Fix posix-cpu-timers sched_time accumulation 2006-01-06 20:23:04 -08:00
posix-timers.c [PATCH] timespec: normalize off by one errors 2005-11-13 18:14:17 -08:00
printk.c [PATCH] Fix crash in unregister_console() 2005-11-23 16:08:39 -08:00
profile.c [PATCH] mostly_read data section 2005-07-07 18:23:46 -07:00
ptrace.c [PATCH] Fix crash when ptrace poking hugepage areas 2005-11-29 19:47:03 -08:00
rcupdate.c [PATCH] RCU signal handling 2006-01-08 20:13:40 -08:00
rcutorture.c [PATCH] Fix bug in RCU torture test 2005-12-12 08:57:42 -08:00
resource.c [PATCH] introduce and use kzalloc 2005-09-07 16:57:45 -07:00
sched.c [PATCH] RCU signal handling 2006-01-08 20:13:40 -08:00
seccomp.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
signal.c [PATCH] Simpler signal-exit concurrency handling 2006-01-08 20:13:40 -08:00
softirq.c [PATCH] cpu hoptlug: avoid usage of smp_processor_id() in preemptible code 2005-11-07 07:53:29 -08:00
softlockup.c [PATCH] quieten softlockup at boot 2005-11-09 07:55:50 -08:00
spinlock.c [PATCH] spinlock consolidation 2005-09-10 10:06:21 -07:00
stop_machine.c [PATCH] stop_machine() vs. synchronous IPI send deadlock 2005-11-13 18:14:16 -08:00
sys.c [PATCH] kprobes: no probes on critical path 2005-12-12 08:57:45 -08:00
sys_ni.c [PATCH] Swap Migration V5: sys_migrate_pages interface 2006-01-08 20:12:42 -08:00
sysctl.c [PATCH] Make high and batch sizes of per_cpu_pagelists configurable 2006-01-08 20:12:40 -08:00
time.c [PATCH] Add getnstimestamp function 2005-12-12 08:57:42 -08:00
timer.c [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
uid16.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
user.c [PATCH] inotify 2005-07-12 20:38:38 -07:00
wait.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
workqueue.c [PATCH] add schedule_on_each_cpu() 2006-01-08 20:12:40 -08:00