Andrea Righi 297c5d9263 task IO accounting: provide distinct tgid/tid I/O statistics ... Report per-thread I/O statistics in /proc/pid/task/tid/io and aggregate parent I/O statistics in /proc/pid/io. This approach follows the same model used to account per-process and per-thread CPU times. As a practial application, this allows for example to quickly find the top I/O consumer when a process spawns many child threads that perform the actual I/O work, because the aggregated I/O statistics can always be found in /proc/pid/io. [ Oleg Nesterov points out that we should check that the task is still alive before we iterate over the threads, but also says that we can do that fixup on top of this later. - Linus ] Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Andrea Righi <righi.andrea@gmail.com> Cc: Matt Heaton <matt@hostmonster.com> Cc: Shailabh Nagar <nagar@watson.ibm.com> Acked-by-with-comments: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-07-25 10:53:47 -07:00
..
irq	kernel/irq/manage.c: replace a printk + WARN_ON() to a WARN()	2008-07-25 10:53:29 -07:00
power	pm: fix try_to_freeze_tasks()'s use of do_div()	2008-07-24 10:47:24 -07:00
time	Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-07-24 12:55:01 -07:00
trace	markers: fix sparse integer as NULL pointer warning	2008-07-25 10:53:45 -07:00
.gitignore	Update kernel/.gitignore with new auto-generated files	2008-02-09 23:27:01 -08:00
acct.c	bsdacct: fix and add comments around acct_process()	2008-07-25 10:53:47 -07:00
audit_tree.c	[PATCH] list_for_each_rcu must die: audit	2008-05-17 03:30:23 -04:00
audit.c	[PATCH] remove useless argument type in audit_filter_user()	2008-06-24 23:36:35 -04:00
audit.h	[PATCH 1/2] audit: move extern declarations to audit.h	2008-04-28 06:28:04 -04:00
auditfilter.c	[PATCH] remove useless argument type in audit_filter_user()	2008-06-24 23:36:35 -04:00
auditsc.c	x86_64 syscall audit fast-path	2008-07-23 17:47:32 -07:00
backtracetest.c	backtrace: replace timer with tasklet + completions	2008-06-27 18:09:16 +02:00
bounds.c	Add kbuild.h that contains common definitions for kbuild users	2008-04-29 08:06:29 -07:00
capability.c	security: filesystem capabilities refactor kernel code	2008-07-24 10:47:22 -07:00
cgroup_debug.c	CGroup API files: move "releasable" to cgroup_debug subsystem	2008-04-29 08:06:09 -07:00
cgroup.c	cgroup_clone: use pid of newly created task for new cgroup	2008-07-25 10:53:37 -07:00
compat.c	ntp: support for TAI	2008-05-01 08:03:59 -07:00
configs.c	kernel: use non-racy method for proc entries creation	2008-04-29 08:06:22 -07:00
cpu.c	workqueues: make get_online_cpus() useable for work->func()	2008-07-25 10:53:40 -07:00
cpuset.c	cpuset: two minor code-cleanups	2008-07-25 10:53:38 -07:00
delayacct.c
dma.c	kernel: use non-racy method for proc entries creation	2008-04-29 08:06:22 -07:00
exec_domain.c	remove CONFIG_KMOD from core kernel code	2008-07-22 19:24:31 +10:00
exit.c	task IO accounting: provide distinct tgid/tid I/O statistics	2008-07-25 10:53:47 -07:00
extable.c
fork.c	task IO accounting: provide distinct tgid/tid I/O statistics	2008-07-25 10:53:47 -07:00
futex_compat.c	futex_compat __user annotation	2008-03-30 14:18:41 -07:00
futex.c	futexes: fix fault handling in futex_lock_pi	2008-06-23 13:31:15 +02:00
hrtimer.c	Merge branch 'generic-ipi' into generic-ipi-for-linus	2008-07-15 21:55:59 +02:00
itimer.c	ITIMER_REAL: convert to use struct pid	2008-02-08 09:22:29 -08:00
kallsyms.c	kallsyms: fix potential overflow in binary search	2008-07-25 10:53:27 -07:00
Kconfig.hz	sched: fix hrtick & generic-ipi dependency	2008-07-23 11:18:28 +02:00
Kconfig.preempt	rcu: move PREEMPT_RCU config option back under PREEMPT	2008-03-10 18:01:20 -07:00
kexec.c	kexec: make extended crashkernel= syntax less confusing	2008-05-01 08:04:00 -07:00
kfifo.c
kgdb.c	kgdb: sparse fix	2008-06-24 10:52:55 -05:00
kmod.c	call_usermodehelper(): increase reliability	2008-07-25 10:53:28 -07:00
kprobes.c	kprobes: remove redundant config check	2008-07-25 10:53:30 -07:00
ksysfs.c
kthread.c	kthread: reduce stack pressure in create_kthread and kthreadd	2008-07-18 18:46:58 +02:00
latencytop.c	kernel: use non-racy method for proc entries creation	2008-04-29 08:06:22 -07:00
lockdep_internals.h	lockdep: add lock_class information to lock_chain and output it	2008-06-24 01:28:20 +02:00
lockdep_proc.c	lockdep: add lock_class information to lock_chain and output it	2008-06-24 01:28:20 +02:00
lockdep.c	Merge branch 'core/locking' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-07-14 14:55:13 -07:00
Makefile	build kernel/profile.o only when requested	2008-07-25 10:53:27 -07:00
marker.c	markers: use rcu_barrier_sched() and call_rcu_sched()	2008-07-25 10:53:45 -07:00
module.c	modules: Take a shortcut for checking if an address is in a module	2008-07-22 19:24:28 +10:00
mutex-debug.c	mutex-debug: check mutex magic before owner	2008-05-16 16:53:35 +02:00
mutex-debug.h
mutex.c	__mutex_lock_common: use signal_pending_state()	2008-06-10 11:45:09 +02:00
mutex.h
notifier.c	ipc: re-enable msgmni automatic recomputing msgmni if set to negative	2008-04-29 08:06:13 -07:00
ns_cgroup.c	cgroup_clone: use pid of newly created task for new cgroup	2008-07-25 10:53:37 -07:00
nsproxy.c	cgroup_clone: use pid of newly created task for new cgroup	2008-07-25 10:53:37 -07:00
panic.c	Add a WARN() macro; this is WARN_ON() + printk arguments	2008-07-25 10:53:29 -07:00
params.c	Add new string functions strict_strto* and convert kernel params to use them	2008-02-08 09:22:41 -08:00
pid_namespace.c	bsdacct: switch from global bsd_acct_struct instance to per-pidns one	2008-07-25 10:53:47 -07:00
pid.c	pidns: remove now unused find_pid function.	2008-07-25 10:53:45 -07:00
pm_qos_params.c	pm_qos_params: BKL pushdown	2008-07-02 15:06:24 -06:00
posix-cpu-timers.c	posix-timers: print RT watchdog message	2008-05-24 18:49:22 +02:00
posix-timers.c	posix timers: release_posix_timer: kill the bogus put_task_struct(->it_process);	2008-07-25 10:53:38 -07:00
printk.c	printk ratelimiting rewrite	2008-07-25 10:53:29 -07:00
profile.c	build kernel/profile.o only when requested	2008-07-25 10:53:27 -07:00
ptrace.c	ptrace children revamp	2008-07-16 18:02:33 -07:00
rcuclassic.c	Merge branch 'linus' into cpus4096	2008-07-16 00:29:07 +02:00
rcupdate.c	Merge branch 'generic-ipi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-07-15 14:12:03 -07:00
rcupreempt_trace.c	rcu: remove duplicated include in kernel/rcupreempt_trace.c	2008-05-19 10:03:39 +02:00
rcupreempt.c	Merge branch 'linus' into cpus4096	2008-07-16 00:29:07 +02:00
rcutorture.c	rcu: make rcutorture even more vicious: invoke RCU readers from irq handlers (timers)	2008-06-26 09:24:33 +02:00
relay.c	splice: fix sendfile() issue with relay	2008-05-28 14:49:27 +02:00
res_counter.c	cgroup files: convert res_counter_write() to be a cgroups write_string() handler	2008-07-25 10:53:36 -07:00
resource.c	kernel: use non-racy method for proc entries creation	2008-04-29 08:06:22 -07:00
rtmutex_common.h	Don't operate with pid_t in rtmutex tester	2008-02-08 09:22:41 -08:00
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	sysdev: Pass the attribute to the low level sysdev show/store function	2008-07-21 21:55:02 -07:00
rtmutex.c	hrtimer: more hrtimer_init_sleeper() fallout.	2008-02-13 15:45:36 +01:00
rtmutex.h
rwsem.c
sched_clock.c	Merge branch 'sched/clock' into sched/devel	2008-07-14 12:19:13 +02:00
sched_cpupri.c	sched: use a 2-d bitmap for searching lowest-pri CPU	2008-06-06 15:19:28 +02:00
sched_cpupri.h	sched: fix the cpuprio count really	2008-06-06 15:19:44 +02:00
sched_debug.c	sched: add full schedstats to /proc/sched_debug	2008-06-27 14:31:31 +02:00
sched_fair.c	Merge branch 'sched/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-07-23 19:36:53 -07:00
sched_features.h	sched: bias effective_load() error towards failing wake_affine().	2008-06-27 14:31:47 +02:00
sched_idletask.c	sched: make rt_sched_class, idle_sched_class static	2008-05-05 23:56:17 +02:00
sched_rt.c	Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-07-24 12:53:51 -07:00
sched_stats.h	sched: fix accounting in task delay accounting & migration	2008-07-04 12:50:23 +02:00
sched.c	accounting: account for user time when updating memory integrals	2008-07-25 10:53:46 -07:00
seccomp.c
semaphore.c	mmiotrace broken in linux-next (8-bit writes only)	2008-07-01 10:14:06 +02:00
signal.c	pidns: remove now unused kill_proc function	2008-07-25 10:53:45 -07:00
smp.c	generic ipi function calls: wait on alloc failure fallback	2008-07-15 14:12:20 -07:00
softirq.c	Merge branch 'linus' into timers/nohz	2008-07-18 19:53:16 +02:00
softlockup.c	softlockup: print a module list on being stuck	2008-07-05 08:51:24 +02:00
spinlock.c	ftrace: lockdep notrace annotations	2008-05-23 20:39:40 +02:00
srcu.c	make srcu_readers_active() static	2008-02-06 10:41:02 -08:00
stacktrace.c	stacktrace: fix modular build, export print_stack_trace and save_stack_trace	2008-06-30 09:20:55 +02:00
stop_machine.c	cpumask: Replace cpumask_of_cpu with cpumask_of_cpu_ptr	2008-07-18 22:02:57 +02:00
sys_ni.c	flag parameters: fix compile error of sys_epoll_create1	2008-07-25 10:53:26 -07:00
sys.c	unexport uts_sem	2008-07-25 10:53:45 -07:00
sysctl_check.c	sysctl: check for bogus modes	2008-07-25 10:53:45 -07:00
sysctl.c	printk ratelimiting rewrite	2008-07-25 10:53:29 -07:00
taskstats.c	core: use performance variant for_each_cpu_mask_nr	2008-05-23 18:35:12 +02:00
test_kprobes.c	kprobes: kretprobe user entry-handler	2008-02-06 10:41:11 -08:00
time.c	Make constants in kernel/timeconst.h fixed 64 bits	2008-05-02 16:18:42 -07:00
timeconst.pl	Make constants in kernel/timeconst.h fixed 64 bits	2008-05-02 16:18:42 -07:00
timer.c	Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm	2008-07-14 16:06:58 -07:00
tsacct.c	accounting: account for user time when updating memory integrals	2008-07-25 10:53:46 -07:00
uid16.c	asmlinkage_protect replaces prevent_tail_call	2008-04-10 17:28:26 -07:00
user_namespace.c	eCryptfs: make key module subsystem respect namespaces	2008-04-29 08:06:07 -07:00
user.c	alloc_uid: cleanup	2008-04-30 08:29:53 -07:00
utsname_sysctl.c
utsname.c	kernel: explicitly include required header files under kernel/	2008-04-29 08:06:04 -07:00
wait.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
workqueue.c	workqueues: do CPU_UP_CANCELED if CPU_UP_PREPARE fails	2008-07-25 10:53:41 -07:00