Oleg Nesterov fec9993db0 signal: retarget_shared_pending: optimize while_each_thread() loop ...

retarget_shared_pending() blindly does recalc_sigpending_and_wake() for
every sub-thread, this is suboptimal. We can check t->blocked and stop
looping once every bit in shared_pending has the new target.

Note: we do not take task_is_stopped_or_traced(t) into account, we are
not trying to speed up the signal delivery or to avoid the unnecessary
(but harmless) signal_wake_up(0) in this unlikely case.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Matt Fleming <matt.fleming@linux.intel.com>
Acked-by: Tejun Heo <tj@kernel.org>

2011-04-28 13:01:35 +02:00

..

debug

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb

2011-03-25 21:04:56 -07:00

gcov

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irq

genirq: Remove the now obsolete config options and select statements

2011-03-30 14:13:23 +02:00

power

Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block

2011-03-24 10:16:26 -07:00

time

ntp: fix non privileged system time shifting

2011-04-04 08:31:23 -07:00

trace

Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-03-25 17:53:09 -07:00

.gitignore

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acct.c

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async.c

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audit_tree.c

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audit_watch.c

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audit.c

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audit.h

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auditfilter.c

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auditsc.c

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backtracetest.c

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bounds.c

memcg: remove direct page_cgroup-to-page pointer

2011-03-23 19:46:28 -07:00

capability.c

userns: make has_capability* into real functions

2011-03-23 19:47:06 -07:00

cgroup_freezer.c

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cgroup.c

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compat.c

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configs.c

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cpu.c

kernel/cpu.c: fix many errors related to style.

2011-03-22 17:44:11 -07:00

cpuset.c

cpuset: hold callback_mutex in cpuset_post_clone()

2011-03-23 19:46:35 -07:00

crash_dump.c

crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn

2011-03-23 19:47:19 -07:00

cred.c

userns: security: make capabilities relative to the user namespace

2011-03-23 19:47:02 -07:00

delayacct.c

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dma.c

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elfcore.c

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exec_domain.c

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exit.c

Merge branch 'ptrace' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc into ptrace

2011-04-07 20:44:11 +02:00

extable.c

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fork.c

Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block

2011-03-24 10:16:26 -07:00

freezer.c

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futex_compat.c

userns: user namespaces: convert several capable() calls

2011-03-23 19:47:08 -07:00

futex.c

Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-03-25 17:52:22 -07:00

groups.c

userns: user namespaces: convert several capable() calls

2011-03-23 19:47:08 -07:00

hrtimer.c

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hung_task.c

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hw_breakpoint.c

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irq_work.c

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itimer.c

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jump_label.c

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kallsyms.c

Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-03-25 17:52:22 -07:00

Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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kexec.c

kdump: Allow shrinking of kdump region to be overridden

2011-04-01 16:14:30 +11:00

kfifo.c

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kmod.c

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kprobes.c

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ksysfs.c

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kthread.c

kthread: NUMA aware kthread_create_on_node()

2011-03-22 17:44:01 -07:00

latencytop.c

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lockdep_internals.h

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lockdep_proc.c

lockdep: Remove unused 'factor' variable from lockdep_stats_show()

2011-03-23 13:54:47 +01:00

lockdep_states.h

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lockdep.c

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Makefile

crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn

2011-03-23 19:47:19 -07:00

module.c

printk: use %pK for /proc/kallsyms and /proc/modules

2011-03-22 17:44:12 -07:00

mutex-debug.c

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mutex-debug.h

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mutex.c

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mutex.h

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notifier.c

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ns_cgroup.c

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nsproxy.c

userns: user namespaces: convert several capable() calls

2011-03-23 19:47:08 -07:00

padata.c

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panic.c

move x86 specific oops=panic to generic code

2011-03-22 17:44:11 -07:00

params.c

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perf_event.c

perf: Fix task_struct reference leak

2011-03-31 13:02:56 +02:00

pid_namespace.c

pidns: call pid_ns_prepare_proc() from create_pid_namespace()

2011-03-23 19:46:58 -07:00

pid.c

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pm_qos_params.c

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posix-cpu-timers.c

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posix-timers.c

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printk.c

printk: allow setting DEFAULT_MESSAGE_LEVEL via Kconfig

2011-03-22 17:44:13 -07:00

profile.c

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ptrace.c

Merge branch 'ptrace' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc into ptrace

2011-04-07 20:44:11 +02:00

range.c

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rcupdate.c

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rcutiny_plugin.h

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rcutiny.c

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rcutorture.c

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rcutree_plugin.h

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rcutree_trace.c

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rcutree.c

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rcutree.h

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relay.c

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res_counter.c

memcg: res_counter_read_u64(): fix potential races on 32-bit machines

2011-03-23 19:46:22 -07:00

resource.c

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rtmutex_common.h

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rtmutex-debug.c

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rtmutex-debug.h

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rtmutex-tester.c

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rtmutex.c

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rtmutex.h

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rwsem.c

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sched_autogroup.c

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sched_autogroup.h

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sched_clock.c

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sched_cpupri.c

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sched_cpupri.h

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sched_debug.c

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sched_fair.c

sched: Fix rebalance interval calculation

2011-03-31 13:00:37 +02:00

sched_features.h

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sched_idletask.c

sched, doc: Update sched-design-CFS.txt

2011-03-23 14:09:41 +01:00

sched_rt.c

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sched_stats.h

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sched_stoptask.c

sched, doc: Update sched-design-CFS.txt

2011-03-23 14:09:41 +01:00

sched.c

sched: Leave sched_setscheduler() earlier if possible, do not disturb SCHED_FIFO tasks

2011-03-31 13:00:34 +02:00

seccomp.c

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semaphore.c

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signal.c

signal: retarget_shared_pending: optimize while_each_thread() loop

2011-04-28 13:01:35 +02:00

smp.c

smp: move smp setup functions to kernel/smp.c

2011-03-22 17:44:11 -07:00

softirq.c

kthread: use kthread_create_on_node()

2011-03-22 17:44:01 -07:00

spinlock.c

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srcu.c

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stacktrace.c

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stop_machine.c

kthread: use kthread_create_on_node()

2011-03-22 17:44:01 -07:00

sys_ni.c

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sys.c

userns: user namespaces: convert all capable checks in kernel/sys.c

2011-03-23 19:47:06 -07:00

sysctl_binary.c

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sysctl_check.c

sysctl_check: drop dead code

2011-03-23 19:46:51 -07:00

sysctl.c

sysctl: restrict write access to dmesg_restrict

2011-03-23 19:46:54 -07:00

taskstats.c

taskstats: use appropriate printk priority level

2011-03-23 19:47:14 -07:00

test_kprobes.c

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time.c

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timeconst.pl

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timer.c

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tracepoint.c

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tsacct.c

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uid16.c

userns: user namespaces: convert several capable() calls

2011-03-23 19:47:08 -07:00

up.c

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user_namespace.c

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user-return-notifier.c

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user.c

userns: add a user_namespace as creator/owner of uts_namespace

2011-03-23 19:46:59 -07:00

utsname_sysctl.c

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utsname.c

userns: allow sethostname in a container

2011-03-23 19:47:03 -07:00

wait.c

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watchdog.c

kernel/watchdog.c: always return NOTIFY_OK during cpu up/down events

2011-03-22 17:44:12 -07:00

workqueue_sched.h

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workqueue.c

kthread: use kthread_create_on_node()

2011-03-22 17:44:01 -07:00