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[PATCH] per-task-delay-accounting: sync block I/O and swapin delay collection
Shailabh Nagar authored 

Unlike earlier iterations of the delay accounting patches, now delays are only
collected for the actual I/O waits rather than try and cover the delays seen
in I/O submission paths.

Account separately for block I/O delays incurred as a result of swapin page
faults whose frequency can be affected by the task/process' rss limit.  Hence
swapin delays can act as feedback for rss limit changes independent of I/O
priority changes.
Signed-off-by: default avatarShailabh Nagar <nagar@watson.ibm.com>
Signed-off-by: default avatarBalbir Singh <balbir@in.ibm.com>
Cc: Jes Sorensen <jes@sgi.com>
Cc: Peter Chubb <peterc@gelato.unsw.edu.au>
Cc: Erich Focht <efocht@ess.nec.de>
Cc: Levent Serinol <lserinol@gmail.com>
Cc: Jay Lan <jlan@engr.sgi.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
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irq
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.gitignore
Kconfig.hz
Kconfig.preempt
Makefile
acct.c
audit.c
audit.h
auditfilter.c
auditsc.c
capability.c
compat.c
configs.c
cpu.c
cpuset.c
delayacct.c
dma.c
exec_domain.c
exit.c
extable.c
fork.c
futex.c
futex_compat.c
hrtimer.c
itimer.c
kallsyms.c
kexec.c
kfifo.c
kmod.c
kprobes.c
ksysfs.c
kthread.c
lockdep.c
lockdep_internals.h
lockdep_proc.c
module.c
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
panic.c
params.c
pid.c
posix-cpu-timers.c
posix-timers.c
printk.c
profile.c
ptrace.c
rcupdate.c
rcutorture.c
relay.c
resource.c
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
sched.c
seccomp.c
signal.c
softirq.c
softlockup.c
spinlock.c
stacktrace.c
stop_machine.c
sys.c
sys_ni.c
sysctl.c
time.c
timer.c
uid16.c
unwind.c
user.c
wait.c
workqueue.c