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Arjan van de Ven 8f0dfc34e9 sched: Provide iowait counters 
For counting how long an application has been waiting for
(disk) IO, there currently is only the HZ sample driven
information available, while for all other counters in this
class, a high resolution version is available via
CONFIG_SCHEDSTATS.

In order to make an improved bootchart tool possible, we also
need a higher resolution version of the iowait time.

This patch below adds this scheduler statistic to the kernel.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4A64B813.1080506@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-02 08:44:08 +02:00
..
gcov
gcov: enable GCOV_PROFILE_ALL for x86_64
2009-06-18 13:03:58 -07:00
irq
genirq: Wake up irq thread after action has been installed
2009-08-18 17:22:43 +02:00
power
headers: smp_lock.h redux
2009-07-12 12:22:34 -07:00
time
clockevent: Prevent dead lock on clockevents_lock
2009-08-19 18:15:10 +02:00
trace
tracing: handle broken names in ftrace filter
2009-08-18 20:39:48 -04:00
.gitignore
…
acct.c
bsdacct: fix access to invalid filp in acct_on()
2009-06-30 18:56:00 -07:00
async.c
async: Fix lack of boot-time console due to insufficient synchronization
2009-06-08 12:31:53 -07:00
audit_tree.c
Fix rule eviction order for AUDIT_DIR
2009-06-24 00:02:38 -04:00
audit_watch.c
Audit: clean up all op= output to include string quoting
2009-06-24 00:00:52 -04:00
audit.c
Fix rule eviction order for AUDIT_DIR
2009-06-24 00:02:38 -04:00
audit.h
Fix rule eviction order for AUDIT_DIR
2009-06-24 00:02:38 -04:00
auditfilter.c
Audit: clean up all op= output to include string quoting
2009-06-24 00:00:52 -04:00
auditsc.c
Fix rule eviction order for AUDIT_DIR
2009-06-24 00:02:38 -04:00
backtracetest.c
…
bounds.c
…
capability.c
[CVE-2009-0029] System call wrappers part 04
2009-01-14 14:15:19 +01:00
cgroup_debug.c
debug cgroup: remove unneeded cgroup_lock
2009-04-02 19:04:54 -07:00
cgroup_freezer.c
freezer_cg: disable writing freezer.state of root cgroup
2008-11-12 17:17:16 -08:00
cgroup.c
cgroup avoid permanent sleep at rmdir
2009-07-29 19:10:35 -07:00
compat.c
signals: implement sys_rt_tgsigqueueinfo
2009-04-30 19:24:24 +02:00
configs.c
kernel/configs.c: remove useless comments
2008-10-20 08:52:34 -07:00
cpu.c
mm/init: cpu_hotplug_init() must be initialized before SLAB
2009-06-22 21:18:12 -07:00
cpuset.c
cpuset,mm: update tasks' mems_allowed in time
2009-06-16 19:47:31 -07:00
cred-internals.h
CRED: Inaugurate COW credentials
2008-11-14 10:39:23 +11:00
cred.c
CRED: Rename cred_exec_mutex to reflect that it's a guard against ptrace
2009-05-11 08:15:36 +10:00
delayacct.c
schedstat: consolidate per-task cpu runtime stats
2008-12-18 13:54:01 +01:00
dma-coherent.c
dma-coherent: Restore dma_alloc_from_coherent() large alloc fall back policy.
2009-01-21 18:51:53 +09:00
dma.c
kernel/dma.c: remove a CVS keyword
2008-10-16 11:21:30 -07:00
exec_domain.c
Get rid of indirect include of fs_struct.h
2009-03-31 23:00:27 -04:00
exit.c
headers: mnt_namespace.h redux
2009-07-08 09:31:56 -07:00
extable.c
Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-04-05 11:04:19 -07:00
fork.c
clone(): fix race between copy_process() and de_thread()
2009-08-26 20:06:52 -07:00
freezer.c
sched: fix nr_uninterruptible accounting of frozen tasks really
2009-07-18 14:19:53 +02:00
futex_compat.c
futex: Fix compat_futex to be same as futex for REQUEUE_PI
2009-08-10 15:41:12 +02:00
futex.c
futex: Fix handling of bad requeue syscall pairing
2009-08-10 20:38:11 +02:00
groups.c
groups: move code to kernel/groups.c
2009-06-16 19:47:48 -07:00
hrtimer.c
hrtimer: Fix migration expiry check
2009-07-10 17:32:55 +02:00
hung_task.c
softlockup: ensure the task has been switched out once
2009-02-11 11:04:16 +01:00
itimer.c
timers: split process wide cpu clocks/timers
2009-02-05 13:04:33 +01:00
kallsyms.c
kernel/kallsyms.c: replace deprecated __initcall with device_initcall and fix whitespace
2009-06-09 22:37:52 +02:00
Kconfig.freezer
container freezer: implement freezer cgroup subsystem
2008-10-20 08:52:34 -07:00
Kconfig.hz
…
Kconfig.preempt
rcu: provide RCU options on non-preempt architectures too
2008-12-25 09:31:28 +01:00
kexec.c
kexec: fix omitting offset in extended crashkernel syntax
2009-07-29 19:10:34 -07:00
kfifo.c
kernel/kfifo.c: replace conditional test with is_power_of_2()
2009-06-16 19:47:47 -07:00
kgdb.c
sysrq, intel_fb: fix sysrq g collision
2009-05-15 07:56:24 -05:00
kmod.c
headers: mnt_namespace.h redux
2009-07-08 09:31:56 -07:00
kprobes.c
kprobes: Use kernel_text_address() for checking probe address
2009-07-30 16:44:06 -07:00
ksysfs.c
kernel/ksysfs.c:fix dependence on CONFIG_NET
2009-01-06 10:44:31 -08:00
kthread.c
update the comment in kthread_stop()
2009-07-27 12:15:46 -07:00
latencytop.c
sched, latencytop: incorporate review feedback from Andrew Morton
2009-02-11 10:18:04 +01:00
lockdep_internals.h
lockdep: increase MAX_LOCKDEP_ENTRIES and MAX_LOCKDEP_CHAINS
2009-05-12 19:59:52 +02:00
lockdep_proc.c
lockdep: Fix file mode of lock_stat
2009-08-07 11:58:38 +02:00
lockdep_states.h
lockdep: move state bit definitions around
2009-02-14 23:27:59 +01:00
lockdep.c
Merge branch 'linus' into tracing/core
2009-05-07 11:17:34 +02:00
Makefile
Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-06-28 11:05:04 -07:00
marker.c
markers/tracpoints: fix non-modular build
2008-11-16 09:52:03 +01:00
module.c
module: workaround duplicate section names
2009-08-27 12:33:19 -07:00
mutex-debug.c
mutex: implement adaptive spinning
2009-01-14 18:09:02 +01:00
mutex-debug.h
mutex: implement adaptive spinning
2009-01-14 18:09:02 +01:00
mutex.c
Merge branch 'linus' into perfcounters/core
2009-06-11 17:55:42 +02:00
mutex.h
mutex: implement adaptive spinning
2009-01-14 18:09:02 +01:00
notifier.c
Merge commit 'v2.6.28-rc6' into core/debug
2008-11-26 08:22:50 +01:00
ns_cgroup.c
cgroups: relax ns_can_attach checks to allow attaching to grandchild cgroups
2009-04-02 19:04:53 -07:00
nsproxy.c
nsproxy: extract create_nsproxy()
2009-06-18 13:03:56 -07:00
panic.c
trace: stop tracer in oops_enter()
2009-07-24 15:30:45 -04:00
params.c
module_param: allow 'bool' module_params to be bool, not just int.
2009-06-12 21:46:58 +09:30
perf_counter.c
perf_counter: Fix typo in read() output generation
2009-08-21 18:00:35 +02:00
pid_namespace.c
pidns: rewrite copy_pid_ns()
2009-06-18 13:03:55 -07:00
pid.c
kmemleak: Remove alloc_bootmem annotations introduced in the past
2009-07-09 17:07:02 +01:00
pm_qos_params.c
…
posix-cpu-timers.c
posix_cpu_timers_exit_group(): Do not use thread_group_cputimer()
2009-08-08 18:30:25 +02:00
posix-timers.c
posix-timers: Fix oops in clock_nanosleep() with CLOCK_MONOTONIC_RAW
2009-08-04 10:16:41 +02:00
printk.c
printk: Add KERN_DEFAULT printk log-level
2009-06-16 11:02:28 -07:00
profile.c
profile: suppress warning about large allocations when profile=1 is specified
2009-07-29 19:10:36 -07:00
ptrace.c
cred_guard_mutex: do not return -EINTR to user-space
2009-07-06 13:57:04 -07:00
rcuclassic.c
kmemtrace, rcu: fix linux/rcutree.h and linux/rcuclassic.h dependencies
2009-04-03 12:23:02 +02:00
rcupdate.c
RCU: Don't try and predeclare inline funcs as it upsets some versions of gcc
2009-04-15 13:55:14 -07:00
rcupreempt_trace.c
"Tree RCU": scalable classic RCU implementation
2008-12-18 21:56:04 +01:00
rcupreempt.c
rcu: rcu_sched_grace_period(): kill the bogus flush_signals()
2009-05-05 20:28:05 +02:00
rcutorture.c
cpumask: convert rcutorture.c
2009-03-30 22:05:16 +10:30
rcutree_trace.c
rcu: Add __rcu_pending tracing to hierarchical RCU
2009-04-14 11:33:43 +02:00
rcutree.c
rcu: Mark Hierarchical RCU no longer experimental
2009-06-24 15:02:48 +02:00
rcutree.h
kmemtrace, rcu: fix rcu_tree_trace.c data structure dependencies
2009-04-03 12:23:03 +02:00
relay.c
Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-04-05 11:04:19 -07:00
res_counter.c
memcg: add interface to reset limits
2009-06-18 13:03:48 -07:00
resource.c
kernel/resource.c: fix sign extension in reserve_setup()
2009-06-30 18:56:00 -07:00
rtmutex_common.h
rt_mutex: add proxy lock routines
2009-04-06 11:14:02 +02:00
rtmutex-debug.c
…
rtmutex-debug.h
…
rtmutex-tester.c
…
rtmutex.c
rtmutex: Avoid deadlock in rt_mutex_start_proxy_lock()
2009-08-06 05:50:21 +02:00
rtmutex.h
…
rwsem.c
…
sched_clock.c
sched: Fix fallback sched_clock()'s offset when using jiffies
2009-05-09 10:08:19 +02:00
sched_cpupri.c
sched: Add new prio to cpupri before removing old prio
2009-08-02 14:26:09 +02:00
sched_cpupri.h
cpumask: remove cpumask_t from core
2009-03-30 22:05:17 +10:30
sched_debug.c
sched: Provide iowait counters
2009-09-02 08:44:08 +02:00
sched_fair.c
sched: Provide iowait counters
2009-09-02 08:44:08 +02:00
sched_features.h
Merge branch 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-03-30 17:17:35 -07:00
sched_idletask.c
sched, timers: move calc_load() to scheduler
2009-05-15 15:32:45 +02:00
sched_rt.c
sched: Fix cpupri build on !CONFIG_SMP
2009-08-02 15:15:51 +02:00
sched_stats.h
sched: remove unused fields from struct rq
2009-03-24 23:16:51 +01:00
sched.c
sched: Provide iowait counters
2009-09-02 08:44:08 +02:00
seccomp.c
x86-64: seccomp: fix 32/64 syscall hole
2009-03-02 15:41:30 -08:00
semaphore.c
…
signal.c
do_sigaltstack: small cleanups
2009-08-01 11:18:56 -07:00
slow-work.c
slow-work: use round_jiffies() for thread pool's cull and OOM timers
2009-06-16 19:47:49 -07:00
smp.c
generic-ipi: fix hotplug_cfd()
2009-08-07 10:39:55 -07:00
softirq.c
softirq: introduce tasklet_hrtimer infrastructure
2009-07-22 17:01:17 +02:00
softlockup.c
softlockup: decouple hung tasks check from softlockup detection
2009-01-16 14:06:04 +01:00
spinlock.c
Allow rwlocks to re-enable interrupts
2009-04-02 19:05:11 -07:00
srcu.c
…
stacktrace.c
stacktrace: provide save_stack_trace_tsk() weak alias
2008-12-25 11:44:43 +01:00
stop_machine.c
cpumask: remove cpumask_t from core
2009-03-30 22:05:17 +10:30
sys_ni.c
Merge commit 'v2.6.29-rc2' into perfcounters/core
2009-01-21 16:37:27 +01:00
sys.c
groups: move code to kernel/groups.c
2009-06-16 19:47:48 -07:00
sysctl_check.c
net: add ARP notify option for devices
2009-02-01 01:04:33 -08:00
sysctl.c
Security/SELinux: seperate lsm specific mmap_min_addr
2009-08-17 15:09:11 +10:00
taskstats.c
cpumask: convert rest of files in kernel/
2009-01-01 10:12:28 +10:30
test_kprobes.c
kprobes: add tests for register_kprobes
2009-01-06 15:59:20 -08:00
time.c
[CVE-2009-0029] System call wrappers part 01
2009-01-14 14:15:18 +01:00
timeconst.pl
…
timer.c
timer: Avoid reading uninitialized data
2009-07-18 23:11:43 +02:00
tracepoint.c
tracepoints: dont update zero-sized tracepoint sections
2009-03-18 19:55:00 +01:00
tsacct.c
Fix fixpoint divide exception in acct_update_integrals
2009-03-09 08:13:35 -07:00
uid16.c
[CVE-2009-0029] System call wrappers part 19
2009-01-14 14:15:26 +01:00
up.c
smp_call_function_single(): be slightly less stupid, fix #2
2009-01-12 16:04:37 +01:00
user_namespace.c
Fix recursive lock in free_uid()/free_user_ns()
2009-02-27 16:26:21 -08:00
user.c
sched: delayed cleanup of user_struct
2009-06-15 21:30:23 -07:00
utsname_sysctl.c
proc_sysctl: use CONFIG_PROC_SYSCTL around ipc and utsname proc_handlers
2009-04-02 19:05:01 -07:00
utsname.c
utsns: extract creeate_uts_ns()
2009-06-18 13:03:55 -07:00
wait.c
locking, sched: Give waitqueue spinlocks their own lockdep classes
2009-08-10 14:43:09 +02:00
workqueue.c
ftrace, workqueuetrace: make workqueue tracepoints use TRACE_EVENT macro
2009-06-02 01:10:40 +02:00