Ingo Molnar dfbf4a1bc3 sched: fix cpu clock ...

David Miller pointed it out that nothing in cpu_clock() sets
prev_cpu_time. This caused __sync_cpu_clock() to be called
all the time - against the intention of this code.

The result was that in practice we hit a global spinlock every
time cpu_clock() is called - which - even though cpu_clock()
is used for tracing and debugging, is suboptimal.

While at it, also:

- move the irq disabling to the outest layer,
  this should make cpu_clock() warp-free when called with irqs
  enabled.

- use long long instead of cycles_t - for platforms where cycles_t
  is 32-bit.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2008-05-05 23:56:18 +02:00

..

irq

genirq: reenable a nobody cared disabled irq when a new driver arrives

2008-05-02 13:40:34 +02:00

power

Merge branches 'release', 'acpica', 'bugzilla-10224', 'bugzilla-9772', 'bugzilla-9916', 'ec', 'eeepc', 'idle', 'misc', 'pm-legacy', 'sysfs-links-2.6.26', 'thermal', 'thinkpad' and 'video' into release

2008-04-30 13:58:00 -04:00

time

clocksource: allow read access to available/current_clocksource

2008-05-03 18:11:48 +02:00

.gitignore

…

acct.c

bsd_acct: using task_struct->tgid is not right in pid-namespaces

2008-03-24 19:22:20 -07:00

audit_tree.c

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audit.c

[patch 2/2] Use find_task_by_vpid in audit code

2008-04-28 06:28:30 -04:00

audit.h

[PATCH 1/2] audit: move extern declarations to audit.h

2008-04-28 06:28:04 -04:00

auditfilter.c

Merge branch 'audit.b50' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current

2008-04-29 11:41:22 -07:00

auditsc.c

[PATCH] new predicate - AUDIT_FILETYPE

2008-04-28 06:28:37 -04:00

backtracetest.c

…

bounds.c

Add kbuild.h that contains common definitions for kbuild users

2008-04-29 08:06:29 -07:00

capability.c

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cgroup_debug.c

CGroup API files: move "releasable" to cgroup_debug subsystem

2008-04-29 08:06:09 -07:00

cgroup.c

mm: bdi: add separate writeback accounting capability

2008-04-30 08:29:50 -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

kernel: replace remaining __FUNCTION__ occurrences

2008-04-30 08:29:54 -07:00

cpuset.c

Cpuset hardwall flag: add a mem_hardwall flag to cpusets

2008-04-29 08:06:11 -07:00

delayacct.c

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dma.c

kernel: use non-racy method for proc entries creation

2008-04-29 08:06:22 -07:00

exec_domain.c

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exit.c

[PATCH] split linux/file.h

2008-05-01 13:08:16 -04:00

extable.c

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fork.c

[PATCH] split linux/file.h

2008-05-01 13:08:16 -04:00

futex_compat.c

futex_compat __user annotation

2008-03-30 14:18:41 -07:00

futex.c

Removal of FUTEX_FD

2008-05-05 08:18:45 -07:00

hrtimer.c

hrtimer: remove duplicate helper function

2008-05-03 18:11:48 +02:00

itimer.c

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kallsyms.c

kernel: use non-racy method for proc entries creation

2008-04-29 08:06:22 -07:00

Kconfig.hz

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Kconfig.preempt

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kexec.c

kexec: make extended crashkernel= syntax less confusing

2008-05-01 08:04:00 -07:00

kfifo.c

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kgdb.c

kgdb: fix signedness mixmatches, add statics, add declaration to header

2008-05-05 07:13:21 -05:00

kmod.c

[PATCH] split linux/file.h

2008-05-01 13:08:16 -04:00

kprobes.c

kprobes: add (un)register_jprobes for batch registration

2008-04-28 08:58:32 -07:00

ksysfs.c

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kthread.c

Deprecate find_task_by_pid()

2008-04-30 08:29:48 -07:00

latencytop.c

kernel: use non-racy method for proc entries creation

2008-04-29 08:06:22 -07:00

lockdep_internals.h

…

lockdep_proc.c

kernel: use non-racy method for proc entries creation

2008-04-29 08:06:22 -07:00

lockdep.c

…

Makefile

sysctl: allow embedded targets to disable sysctl_check.c

2008-04-29 08:06:22 -07:00

marker.c

make marker_debug static

2008-04-30 08:29:49 -07:00

module.c

Make forced module loading optional

2008-05-04 17:04:16 -07:00

mutex-debug.c

…

mutex-debug.h

…

mutex.c

…

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

cgroups: kernel/ns_cgroup.c should #include <linux/nsproxy.h>

2008-04-29 08:06:07 -07:00

nsproxy.c

ipc: sysvsem: refuse clone(CLONE_SYSVSEM|CLONE_NEWIPC)

2008-04-29 08:06:14 -07:00

panic.c

Taint kernel after WARN_ON(condition)

2008-04-29 08:05:59 -07:00

params.c

…

pid_namespace.c

pidns: make pid->level and pid_ns->level unsigned

2008-04-30 08:29:49 -07:00

pid.c

pids: introduce change_pid() helper

2008-04-30 08:29:48 -07:00

pm_qos_params.c

…

posix-cpu-timers.c

remove div_long_long_rem

2008-05-01 08:03:58 -07:00

posix-timers.c

signals: join send_sigqueue() with send_group_sigqueue()

2008-04-30 08:29:36 -07:00

printk.c

printk: don't read beyond string arguments' terminating zero

2008-04-30 08:29:52 -07:00

profile.c

kernel: use non-racy method for proc entries creation

2008-04-29 08:06:22 -07:00

ptrace.c

make generic sys_ptrace unconditional

2008-05-01 10:21:54 -07:00

rcuclassic.c

…

rcupdate.c

…

rcupreempt_trace.c

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rcupreempt.c

generic: reduce stack pressure in sched_affinity

2008-04-19 19:44:59 +02:00

rcutorture.c

kernel: explicitly include required header files under kernel/

2008-04-29 08:06:04 -07:00

relay.c

Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

2008-04-29 08:18:03 -07:00

res_counter.c

memcgroup: add the max_usage member on the res_counter

2008-04-29 08:06:10 -07:00

resource.c

kernel: use non-racy method for proc entries creation

2008-04-29 08:06:22 -07:00

rtmutex_common.h

…

rtmutex-debug.c

…

rtmutex-debug.h

…

rtmutex-tester.c

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rtmutex.c

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rtmutex.h

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rwsem.c

…

sched_debug.c

rename div64_64 to div64_u64

2008-05-01 08:03:58 -07:00

sched_fair.c

sched: fix debugging

2008-05-05 23:56:18 +02:00

sched_features.h

sched: /debug/sched_features

2008-04-19 19:45:00 +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

sched: fix RT task-wakeup logic

2008-05-05 23:56:18 +02:00

sched_stats.h

cpumask: use new cpus_scnprintf function

2008-04-19 19:44:59 +02:00

sched.c

sched: fix cpu clock

2008-05-05 23:56:18 +02:00

seccomp.c

…

semaphore.c

Improve semaphore documentation

2008-04-17 10:43:01 -04:00

signal.c

signals: add set_restore_sigmask

2008-04-30 08:29:37 -07:00

softirq.c

Fix cpu hotplug problem in softirq code

2008-05-01 08:03:58 -07:00

softlockup.c

…

spinlock.c

…

srcu.c

…

stacktrace.c

…

stop_machine.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial

2008-04-21 16:36:46 -07:00

sys_ni.c

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sys.c

pids: sys_getpgid: fix unsafe *pid usage, s/tasklist/rcu/

2008-04-30 08:29:49 -07:00

sysctl_check.c

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sysctl.c

sysctl: add the ->permissions callback on the ctl_table_root

2008-04-29 08:06:23 -07:00

taskstats.c

Use find_task_by_vpid in taskstats

2008-04-30 08:29:48 -07:00

test_kprobes.c

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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

debugobjects: add timer specific object debugging code

2008-04-30 08:29:53 -07:00

tsacct.c

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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

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workqueue.c

workqueue: remove redundant function invocation

2008-05-01 08:04:02 -07:00