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Dipankar Sarma c2d727aa2f Preempt-RCU: Use softirq instead of tasklets for 
This patch makes RCU use softirq instead of tasklets.

It also adds a memory barrier after raising the softirq
inorder to ensure that the cpu sees the most recently updated
value of rcu->cur while processing callbacks.
The discussion of the related theoretical race pointed out
by James Huang can be found here --> http://lkml.org/lkml/2007/11/20/603

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com>
Reviewed-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-01-25 21:08:23 +01:00
..
irq
genirq: revert lazy irq disable for simple irqs
2007-12-18 18:05:58 +01:00
power
driver core: make /sys/power a kobject
2008-01-24 20:40:25 -08:00
time
Driver core: change sysdev classes to use dynamic kobject names
2008-01-24 20:40:40 -08:00
.gitignore
…
acct.c
acct: real_parent ppid
2008-01-07 14:55:37 -08:00
audit_tree.c
[PATCH] audit: watching subtrees
2007-10-21 02:37:45 -04:00
audit.c
[PATCH] audit: watching subtrees
2007-10-21 02:37:45 -04:00
audit.h
[PATCH] audit: watching subtrees
2007-10-21 02:37:45 -04:00
auditfilter.c
[PATCH] audit: watching subtrees
2007-10-21 02:37:45 -04:00
auditsc.c
auditsc: fix kernel-doc param warnings
2007-10-22 19:40:02 -07:00
capability.c
Uninline find_pid etc set of functions
2007-10-19 11:53:41 -07:00
cgroup_debug.c
Task Control Groups: simple task cgroup debug info subsystem
2007-10-19 11:53:36 -07:00
cgroup.c
Improve cgroup printks
2007-11-14 18:45:37 -08:00
compat.c
Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt
2007-10-18 15:12:41 -07:00
configs.c
use simple_read_from_buffer in kernel/
2007-05-09 12:30:49 -07:00
cpu.c
cpu-hotplug: replace per-subsystem mutexes with get_online_cpus()
2008-01-25 21:08:02 +01:00
cpuset.c
cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()
2008-01-25 21:08:02 +01:00
delayacct.c
Add scaled time to taskstats based process accounting
2007-10-18 14:37:28 -07:00
dma.c
whitespace fixes: DMA channel allocator
2007-10-18 14:37:24 -07:00
exec_domain.c
whitespace fixes: execution domains
2007-10-18 14:37:26 -07:00
exit.c
wait_task_stopped(): pass correct exit_code to wait_noreap_copyout()
2007-11-29 09:24:55 -08:00
extable.c
[PATCH] symbol_put_addr() locks kernel
2006-05-15 11:20:55 -07:00
fork.c
sched: add RT-balance cpu-weight
2008-01-25 21:08:07 +01:00
futex_compat.c
[FUTEX] Fix address computation in compat code.
2007-11-09 16:13:08 -08:00
futex.c
futex: Prevent stale futex owner when interrupted/timeout
2008-01-08 16:21:39 -08:00
hrtimer.c
hrtimer: fix section mismatch
2008-01-21 19:39:41 -08:00
itimer.c
whitespace fixes: interval timers
2007-10-18 14:37:26 -07:00
kallsyms.c
FRV: fix the extern declaration of kallsyms_num_syms
2007-11-29 09:24:54 -08:00
Kconfig.hz
[PATCH] HZ: 300Hz support
2006-12-07 08:39:36 -08:00
Kconfig.instrumentation
Tiny clean-up of OPROFILE/KPROBES configuration
2007-12-06 09:41:12 -08:00
Kconfig.preempt
Move PREEMPT_NOTIFIERS into an always-included Kconfig
2007-10-17 08:42:55 -07:00
kexec.c
vmcoreinfo: add the array length of "free_list" for filtering free pages
2008-01-08 16:10:36 -08:00
kfifo.c
is_power_of_2: kernel/kfifo.c
2007-07-16 09:05:50 -07:00
kmod.c
Fix unbalanced helper_lock in kernel/kmod.c
2008-01-17 15:38:59 -08:00
kprobes.c
kprobes: support kretprobe blacklist
2007-10-16 09:43:10 -07:00
ksysfs.c
Kobject: convert remaining kobject_unregister() to kobject_put()
2008-01-24 20:40:40 -08:00
kthread.c
kthread: silence bogus section mismatch warning
2007-07-31 15:39:42 -07:00
latency.c
[PATCH] severing module.h->sched.h
2006-12-04 02:00:22 -05:00
lockdep_internals.h
[PATCH] lockdep: more chains
2006-12-07 08:39:43 -08:00
lockdep_proc.c
lockdep: Avoid /proc/lockdep & lock_stat infinite output
2007-10-11 22:11:11 +02:00
lockdep.c
softlockup: automatically detect hung TASK_UNINTERRUPTIBLE tasks
2008-01-25 21:08:02 +01:00
Makefile
revert "Task Control Groups: example CPU accounting subsystem"
2007-11-14 18:45:40 -08:00
marker.c
Linux Kernel Markers: fix marker mutex not taken upon module load
2007-11-14 18:45:40 -08:00
module.c
Kobject: convert remaining kobject_unregister() to kobject_put()
2008-01-24 20:40:40 -08:00
mutex-debug.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
mutex-debug.h
[PATCH] lockdep: better lock debugging
2006-07-03 15:27:01 -07:00
mutex.c
lockdep: fixup mutex annotations
2007-10-11 22:11:12 +02:00
mutex.h
[PATCH] lockdep: prove mutex locking correctness
2006-07-03 15:27:04 -07:00
notifier.c
Add kernel/notifier.c
2007-10-19 11:53:34 -07:00
ns_cgroup.c
cgroups: implement namespace tracking subsystem
2007-10-19 11:53:37 -07:00
nsproxy.c
pid namespaces: allow cloning of new namespace
2007-10-19 11:53:39 -07:00
panic.c
debug: add end-of-oops marker
2007-12-20 15:01:17 +01:00
params.c
Modules: remove unneeded release function
2008-01-24 20:40:39 -08:00
pid.c
pidns: Place under CONFIG_EXPERIMENTAL
2007-11-14 18:45:43 -08:00
posix-cpu-timers.c
Isolate some explicit usage of task->tgid
2007-10-19 11:53:40 -07:00
posix-timers.c
Isolate some explicit usage of task->tgid
2007-10-19 11:53:40 -07:00
printk.c
sched: remove printk_clock()
2008-01-25 21:07:59 +01:00
profile.c
sched: document profile=sleep requiring CONFIG_SCHEDSTATS
2007-10-24 18:23:50 +02:00
ptrace.c
ptrace: Call arch_ptrace_attach() when request=PTRACE_TRACEME
2008-01-25 08:31:39 +01:00
rcupdate.c
Preempt-RCU: Use softirq instead of tasklets for
2008-01-25 21:08:23 +01:00
rcutorture.c
cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()
2008-01-25 21:08:02 +01:00
relay.c
whitespace fixes: relayfs
2007-10-18 14:37:24 -07:00
resource.c
Add IORESOUCE_BUSY flag for System RAM
2007-11-14 18:45:39 -08:00
rtmutex_common.h
FUTEX: Tidy up the code
2007-07-16 09:05:49 -07:00
rtmutex-debug.c
Use helpers to obtain task pid in printks
2007-10-19 11:53:43 -07:00
rtmutex-debug.h
[PATCH] lockdep: better lock debugging
2006-07-03 15:27:01 -07:00
rtmutex-tester.c
Driver core: change sysdev classes to use dynamic kobject names
2008-01-24 20:40:40 -08:00
rtmutex.c
Use helpers to obtain task pid in printks
2007-10-19 11:53:43 -07:00
rtmutex.h
[PATCH] lockdep: better lock debugging
2006-07-03 15:27:01 -07:00
rwsem.c
sched: mark rwsem functions as __sched for wchan/profiling
2007-12-18 15:21:13 +01:00
sched_debug.c
sched: fix gcc warnings
2007-12-30 17:24:35 +01:00
sched_fair.c
sched: RT-balance, add new methods to sched_class
2008-01-25 21:08:22 +01:00
sched_idletask.c
sched: RT-balance, add new methods to sched_class
2008-01-25 21:08:22 +01:00
sched_rt.c
sched: remove some old cpuset logic
2008-01-25 21:08:23 +01:00
sched_stats.h
sched: clean up kernel/sched_stat.h
2007-11-28 15:52:56 +01:00
sched.c
sched: RT-balance, add new methods to sched_class
2008-01-25 21:08:22 +01:00
seccomp.c
make seccomp zerocost in schedule
2007-07-16 09:05:50 -07:00
signal.c
sigwait eats blocked default-ignore signals
2007-11-12 16:05:23 -08:00
softirq.c
[KERNEL]: Unexport raise_softirq_irqoff
2007-10-10 16:49:18 -07:00
softlockup.c
softlockup: automatically detect hung TASK_UNINTERRUPTIBLE tasks
2008-01-25 21:08:02 +01:00
spinlock.c
lockstat: hook into spinlock_t, rwlock_t, rwsem and mutex
2007-07-19 10:04:49 -07:00
srcu.c
[PATCH] SRCU: report out-of-memory errors
2006-10-04 07:55:30 -07:00
stacktrace.c
[PATCH] lockdep: stacktrace subsystem, core
2006-07-03 15:27:02 -07:00
stop_machine.c
cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()
2008-01-25 21:08:02 +01:00
sys_ni.c
[COMPAT]: Fix build on COMPAT platforms when CONFIG_NET is disabled.
2007-10-30 21:29:56 -07:00
sys.c
x86: ignore the sys_getcpu() tcache parameter
2007-11-17 16:27:00 +01:00
sysctl_check.c
sysctl: fix ax25 checks
2007-12-17 19:28:17 -08:00
sysctl.c
softlockup: automatically detect hung TASK_UNINTERRUPTIBLE tasks
2008-01-25 21:08:02 +01:00
taskstats.c
kernel/taskstats.c: fix bogus nlmsg_free()
2007-11-14 18:45:44 -08:00
time.c
whitespace fixes: time syscalls
2007-10-18 14:37:24 -07:00
timer.c
timer: fix section mismatch
2008-01-21 19:39:41 -08:00
tsacct.c
Add scaled time to taskstats based process accounting
2007-10-18 14:37:28 -07:00
uid16.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
user_namespace.c
Fix user namespace exiting OOPs
2007-09-19 11:24:18 -07:00
user.c
Kobject: convert kernel/user.c to use kobject_init/add_ng()
2008-01-24 20:40:31 -08:00
utsname_sysctl.c
Isolate the UTS namespace's domainname and hostname back
2007-11-29 09:24:53 -08:00
utsname.c
Fix UTS corruption during clone(CLONE_NEWUTS)
2007-09-19 11:24:17 -07:00
wait.c
Fix occurrences of "the the "
2007-05-09 08:57:56 +02:00
workqueue.c
cpu-hotplug: replace per-subsystem mutexes with get_online_cpus()
2008-01-25 21:08:02 +01:00