Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Chris Mason ac6e60ee40 mutex: adaptive spinnning, performance tweaks ... Spin more agressively. This is less fair but also markedly faster. The numbers: * dbench 50 (higher is better): spin 1282MB/s v10 548MB/s v10 no wait 1868MB/s * 4k creates (numbers in files/second higher is better): spin avg 200.60 median 193.20 std 19.71 high 305.93 low 186.82 v10 avg 180.94 median 175.28 std 13.91 high 229.31 low 168.73 v10 no wait avg 232.18 median 222.38 std 22.91 high 314.66 low 209.12 * File stats (numbers in seconds, lower is better): spin 2.27s v10 5.1s v10 no wait 1.6s ( The source changes are smaller than they look, I just moved the need_resched checks in __mutex_lock_common after the cmpxchg. ) Signed-off-by: Chris Mason <chris.mason@oracle.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-01-14 19:03:54 +01:00
..
irq	async: Asynchronous function calls to speed up kernel boot	2009-01-07 08:45:46 -08:00
power	Merge branch 'linus' into release	2009-01-09 03:39:43 -05:00
time	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2009-01-07 11:31:52 -08:00
trace	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile	2009-01-09 12:43:06 -08:00
.gitignore
acct.c	CRED: Wrap task credential accesses in the core kernel	2008-11-14 10:39:12 +11:00
async.c	async: fix __lowest_in_progress()	2009-01-12 16:39:58 -08:00
audit.c	[PATCH] fix broken timestamps in AVC generated by kernel threads	2008-12-09 02:27:41 -05:00
audit.h	fixing audit rule ordering mess, part 1	2009-01-04 15:14:41 -05:00
audit_tree.c	audit: validate comparison operations, store them in sane form	2009-01-04 15:14:42 -05:00
auditfilter.c	audit: validate comparison operations, store them in sane form	2009-01-04 15:14:42 -05:00
auditsc.c	make sure that filterkey of task,always rules is reported	2009-01-04 15:14:42 -05:00
backtracetest.c
bounds.c
capability.c	Merge branch 'next' into for-linus	2009-01-07 09:58:22 +11:00
cgroup.c	cgroups: add css_tryget()	2009-01-08 08:31:10 -08:00
cgroup_debug.c
cgroup_freezer.c	freezer_cg: disable writing freezer.state of root cgroup	2008-11-12 17:17:16 -08:00
compat.c	Allow times and time system calls to return small negative values	2009-01-06 15:59:13 -08:00
configs.c
cpu.c	stop_machine/cpu hotplug: fix disable_nonboot_cpus	2009-01-07 11:36:14 -08:00
cpuset.c	cpuset: remove remaining pointers to cpumask_t	2009-01-08 08:31:11 -08:00
cred-internals.h	CRED: Inaugurate COW credentials	2008-11-14 10:39:23 +11:00
cred.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6	2009-01-09 13:59:25 -08:00
delayacct.c	schedstat: consolidate per-task cpu runtime stats	2008-12-18 13:54:01 +01:00
dma-coherent.c	dma-coherent: catch oversized requests to dma_alloc_from_coherent()	2009-01-06 15:59:31 -08:00
dma.c
exec_domain.c
exit.c	mm: introduce get_mm_hiwater_xxx(), fix taskstats->hiwater_xxx accounting	2009-01-06 15:59:09 -08:00
extable.c	Merge branch 'core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-30 16:10:19 -08:00
fork.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-nommu	2009-01-09 14:00:58 -08:00
freezer.c
futex.c	Merge branches 'core/futexes', 'core/locking', 'core/rcu' and 'linus' into core/urgent	2009-01-06 09:32:11 +01:00
futex_compat.c	CRED: Use RCU to access another task's creds and to release a task's own creds	2008-11-14 10:39:19 +11:00
hrtimer.c	hrtimer: splitout peek ahead functionality, fix	2009-01-05 14:11:10 +01:00
itimer.c
kallsyms.c	allow stripping of generated symbols under CONFIG_KALLSYMS_ALL	2008-12-19 22:47:10 +01:00
Kconfig.freezer
Kconfig.hz
Kconfig.preempt	rcu: provide RCU options on non-preempt architectures too	2008-12-25 09:31:28 +01:00
kexec.c	cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: core	2009-01-01 10:12:15 +10:30
kfifo.c
kgdb.c
kmod.c	kmod: fix varargs kernel-doc	2009-01-06 15:59:27 -08:00
kprobes.c	kprobes: support probing module __init function	2009-01-06 15:59:21 -08:00
ksysfs.c	kernel/ksysfs.c:fix dependence on CONFIG_NET	2009-01-06 10:44:31 -08:00
kthread.c	tracepoints: add DECLARE_TRACE() and DEFINE_TRACE()	2008-11-16 09:01:36 +01:00
latencytop.c	KSYM_SYMBOL_LEN fixes	2008-12-10 08:01:54 -08:00
lockdep.c	Merge branch 'core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-30 16:10:19 -08:00
lockdep_internals.h
lockdep_proc.c
Makefile	smp_call_function_single(): be slightly less stupid	2009-01-11 03:41:58 +01:00
marker.c	markers/tracpoints: fix non-modular build	2008-11-16 09:52:03 +01:00
module.c	async: Asynchronous function calls to speed up kernel boot	2009-01-07 08:45:46 -08:00
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	mutex: adaptive spinnning, performance tweaks	2009-01-14 19:03:54 +01:00
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	ns_cgroup: remove unused spinlock	2009-01-08 08:31:02 -08:00
nsproxy.c	User namespaces: set of cleanups (v2)	2008-11-24 18:57:41 -05:00
panic.c	oops: increment the oops UUID every time we oops	2009-01-06 15:59:12 -08:00
params.c
pid.c	pid: generalize task_active_pid_ns	2009-01-08 08:31:12 -08:00
pid_namespace.c
pm_qos_params.c
posix-cpu-timers.c	Merge commit 'v2.6.28' into core/core	2008-12-25 13:51:46 +01:00
posix-timers.c	Merge branches 'timers/clocksource', 'timers/hpet', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/rtc' into timers/core	2008-12-25 18:02:25 +01:00
printk.c	trivial: printk: fix indentation of new_text_line declaration	2009-01-06 11:28:06 +01:00
profile.c	profile: don't include <asm/ptrace.h> twice.	2009-01-06 15:59:14 -08:00
ptrace.c	Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-28 12:21:10 -08:00
rcuclassic.c	cpumask: convert RCU implementations, fix	2009-01-03 18:59:25 +01:00
rcupdate.c	rcu: eliminate synchronize_rcu_xxx macro	2009-01-05 10:18:08 +01:00
rcupreempt.c	rcu: eliminate synchronize_rcu_xxx macro	2009-01-05 10:18:08 +01:00
rcupreempt_trace.c	"Tree RCU": scalable classic RCU implementation	2008-12-18 21:56:04 +01:00
rcutorture.c	rcu: fix bug in rcutorture system-shutdown code	2009-01-07 23:36:25 +01:00
rcutree.c	rcu: make treercu safe for suspend and resume	2009-01-05 10:12:33 +01:00
rcutree_trace.c	"Tree RCU": scalable classic RCU implementation	2008-12-18 21:56:04 +01:00
relay.c	relayfs: fix infinite loop with splice()	2008-12-10 08:01:52 -08:00
res_counter.c	memcg: memory cgroup resource counters for hierarchy	2009-01-08 08:31:05 -08:00
resource.c	resource: allow MMIO exclusivity for device drivers	2009-01-07 11:12:32 -08:00
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
sched.c	mutex: implement adaptive spinning	2009-01-14 18:09:02 +01:00
sched_clock.c	sched_clock: prevent scd->clock from moving backwards, take #2	2008-12-31 09:53:21 +01:00
sched_cpupri.c	sched: fix section mismatch	2009-01-06 11:07:15 +01:00
sched_cpupri.h	sched: convert struct cpupri_vec cpumask_var_t.	2008-11-24 17:52:22 +01:00
sched_debug.c	sched: partly revert "sched debug: remove NULL checking in print_cfs_rt_rq()"	2009-01-11 02:40:32 +01:00
sched_fair.c	generic swap(): sched: remove local swap() macro	2009-01-08 08:31:15 -08:00
sched_features.h	mutex: implement adaptive spinning	2009-01-14 18:09:02 +01:00
sched_idletask.c
sched_rt.c	sched: put back some stack hog changes that were undone in kernel/sched.c	2009-01-03 19:00:09 +01:00
sched_stats.h	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask	2009-01-03 18:53:31 +01:00
seccomp.c
semaphore.c
signal.c	SEND_SIG_NOINFO: set si_pid to tgid instead of pid	2009-01-06 15:59:29 -08:00
smp.c	cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: core	2009-01-01 10:12:15 +10:30
softirq.c	Merge branch 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-03 12:04:39 -08:00
softlockup.c	cpumask: convert rest of files in kernel/	2009-01-01 10:12:28 +10:30
spinlock.c
srcu.c
stacktrace.c	stacktrace: provide save_stack_trace_tsk() weak alias	2008-12-25 11:44:43 +01:00
stop_machine.c	stop_machine: introduce stop_machine_create/destroy.	2009-01-05 08:40:14 +10:30
sys.c	Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-06 17:10:33 -08:00
sys_ni.c	reintroduce accept4	2008-11-19 18:49:57 -08:00
sysctl.c	NOMMU: Make mmap allocation page trimming behaviour configurable.	2009-01-08 12:04:47 +00:00
sysctl_check.c
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	Allow times and time system calls to return small negative values	2009-01-06 15:59:13 -08:00
timeconst.pl
timer.c	[PATCH] idle cputime accounting	2008-12-31 15:11:46 +01:00
tracepoint.c	markers/tracpoints: fix non-modular build	2008-11-16 09:52:03 +01:00
tsacct.c	mm: introduce get_mm_hiwater_xxx(), fix taskstats->hiwater_xxx accounting	2009-01-06 15:59:09 -08:00
uid16.c	CRED: Wrap current->cred and a few other accessors	2008-11-14 10:39:18 +11:00
up.c	smp_call_function_single(): be slightly less stupid, fix #2	2009-01-12 16:04:37 +01:00
user.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-28 12:27:58 -08:00
user_namespace.c	User namespaces: set of cleanups (v2)	2008-11-24 18:57:41 -05:00
utsname.c
utsname_sysctl.c
wait.c
workqueue.c	cpumask: convert kernel/workqueue.c	2009-01-01 10:12:25 +10:30