Steven Rostedt 8aef2d2856 function-graph: ignore times across schedule ... Impact: more accurate timings The current method of function graph tracing does not take into account the time spent when a task is not running. This shows functions that call schedule have increased costs: 3) + 18.664 us | } ------------------------------------------ 3) <idle>-0 => kblockd-123 ------------------------------------------ 3) | finish_task_switch() { 3) 1.441 us | _spin_unlock_irq(); 3) 3.966 us | } 3) ! 2959.433 us | } 3) ! 2961.465 us | } This patch uses the tracepoint in the scheduling context switch to account for time that has elapsed while a task is scheduled out. Now we see: ------------------------------------------ 3) <idle>-0 => edac-po-1067 ------------------------------------------ 3) | finish_task_switch() { 3) 0.685 us | _spin_unlock_irq(); 3) 2.331 us | } 3) + 41.439 us | } 3) + 42.663 us | } Signed-off-by: Steven Rostedt <srostedt@redhat.com>		2009-03-24 09:33:30 -04:00
..
irq	Merge branch 'x86/core' into tracing/textedit	2009-03-06 16:45:01 +01:00
power	PM: Split up sysdev_[suspend|resume] from device_power_[down|up]	2009-02-22 10:33:44 -08:00
time	hrtimers: allow the hot-unplugging of all cpus	2009-01-30 22:35:29 +01:00
trace	function-graph: ignore times across schedule	2009-03-24 09:33:30 -04:00
.gitignore
acct.c
async.c	async: use list_move_tail	2009-02-08 10:00:26 -08:00
audit_tree.c
audit.c
audit.h
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
cgroup_debug.c
cgroup_freezer.c
cgroup.c	cgroups: fix possible use after free	2009-02-18 15:37:54 -08:00
compat.c
configs.c
cpu.c
cpuset.c
cred-internals.h
cred.c
delayacct.c
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
exec_domain.c
exit.c	Merge branch 'linus' into x86/apic	2009-02-13 09:44:22 +01:00
extable.c	tracing, Text Edit Lock - kprobes architecture independent support, nommu fix	2009-03-20 11:09:27 +01:00
fork.c	Merge branches 'tracing/ftrace', 'tracing/textedit' and 'linus' into tracing/core	2009-03-10 22:54:23 +01:00
freezer.c
futex_compat.c
futex.c	futex: fix reference leak	2009-02-11 18:24:08 +01:00
hrtimer.c	hrtimer: prevent negative expiry value after clock_was_set()	2009-01-30 22:35:34 +01:00
itimer.c	timers: split process wide cpu clocks/timers	2009-02-05 13:04:33 +01:00
kallsyms.c
Kconfig.freezer
Kconfig.hz
Kconfig.preempt
kexec.c	Merge branch 'linus' into x86/apic	2009-02-22 20:05:19 +01:00
kfifo.c
kgdb.c
kmod.c
kprobes.c	kprobes: Fix locking imbalance in kretprobes	2009-03-18 12:51:16 +01:00
ksysfs.c
kthread.c
latencytop.c
lockdep_internals.h	lockdep: get_user_chars() redo	2009-02-14 23:28:22 +01:00
lockdep_proc.c	lockstat: warn about disabled lock debugging	2009-02-14 23:28:28 +01:00
lockdep_states.h	lockdep: move state bit definitions around	2009-02-14 23:27:59 +01:00
lockdep.c	Merge branch 'core/locking' into tracing/ftrace	2009-03-13 01:33:21 +01:00
Makefile	PM: fix build for CONFIG_PM unset	2009-02-21 14:17:17 -08:00
marker.c
module.c	Merge branches 'tracing/ftrace', 'tracing/kprobes', 'tracing/tasks' and 'linus' into tracing/core	2009-03-20 10:14:53 +01:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
ns_cgroup.c
nsproxy.c
panic.c	stackprotector: update make rules	2009-02-10 00:41:54 +01:00
params.c
pid_namespace.c
pid.c
pm_qos_params.c
posix-cpu-timers.c	timers: more consistently use clock vs timer	2009-02-13 13:04:05 +01:00
posix-timers.c
printk.c	PM: Fix suspend_console and resume_console to use only one semaphore	2009-02-21 14:17:18 -08:00
profile.c	profiling: fix broken profiling regression	2009-02-10 00:50:37 +01:00
ptrace.c
rcuclassic.c	rcu: Teach RCU that idle task is not quiscent state at boot	2009-02-26 04:08:14 +01:00
rcupdate.c	rcu: Teach RCU that idle task is not quiscent state at boot	2009-02-26 04:08:14 +01:00
rcupreempt_trace.c
rcupreempt.c	rcu: Teach RCU that idle task is not quiscent state at boot	2009-02-26 04:08:14 +01:00
rcutorture.c
rcutree_trace.c
rcutree.c	rcu: Teach RCU that idle task is not quiscent state at boot	2009-02-26 04:08:14 +01:00
relay.c	Merge branches 'tracing/ftrace', 'tracing/kmemtrace' and 'linus' into tracing/core	2009-02-03 06:25:38 +01:00
res_counter.c
resource.c
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rwsem.c
sched_clock.c	Merge branch 'sched/clock' into tracing/ftrace	2009-02-27 08:35:19 +01:00
sched_cpupri.c
sched_cpupri.h
sched_debug.c
sched_fair.c	sched: revert recent sync wakeup changes	2009-02-11 14:43:35 +01:00
sched_features.h
sched_idletask.c
sched_rt.c	sched_rt: don't use first_cpu on cpumask created with cpumask_and	2009-02-01 10:49:52 +01:00
sched_stats.h	timers: split process wide cpu clocks/timers	2009-02-05 13:04:33 +01:00
sched.c	Merge branch 'x86/core' into tracing/textedit	2009-03-06 16:45:01 +01:00
seccomp.c	x86-64: seccomp: fix 32/64 syscall hole	2009-03-02 15:41:30 -08:00
semaphore.c
signal.c	signal: re-add dead task accumulation stats.	2009-02-05 13:04:33 +01:00
smp.c	generic-ipi: use per cpu data for single cpu ipi calls	2009-01-30 18:31:08 +01:00
softirq.c	softirq: no need to have SOFTIRQ in softirq name	2009-03-13 00:43:33 -04:00
softlockup.c
spinlock.c
srcu.c
stacktrace.c
stop_machine.c	alloc_percpu: change percpu_ptr to per_cpu_ptr	2009-02-20 16:29:08 +09:00
sys_ni.c
sys.c	sched: don't allow setuid to succeed if the user does not have rt bandwidth	2009-02-27 11:11:53 +01:00
sysctl_check.c
sysctl.c	mm: fix dirty_bytes/dirty_background_bytes sysctls on 64bit arches	2009-02-11 14:25:35 -08:00
taskstats.c
test_kprobes.c
time.c
timeconst.pl
timer.c	timer: implement lockdep deadlock detection	2009-02-14 23:25:52 +01:00
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
up.c
user_namespace.c	Fix recursive lock in free_uid()/free_user_ns()	2009-02-27 16:26:21 -08:00
user.c	kernel/user.c: fix a memory leak when freeing up non-init usernamespaces users	2009-03-10 15:55:11 -07:00
utsname_sysctl.c
utsname.c
wait.c	wait: prevent exclusive waiter starvation	2009-02-05 12:56:48 -08:00
workqueue.c	Merge branches 'tracing/ftrace', 'tracing/kmemtrace' and 'linus' into tracing/core	2009-02-03 06:25:38 +01:00