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54b11e6d57a10aa9d0009efd93873e17bffd5d30
linux/kernel
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Rusty Russell 54b11e6d57 cpumask: smp_call_function_many() 
Impact: Implementation change to remove cpumask_t from stack.

Actually change smp_call_function_mask() to smp_call_function_many().
We avoid cpumasks on the stack in this version.

(S390 has its own version, but that's going away apparently).

We have to do some dancing to figure out if 0 or 1 other cpus are in
the mask supplied and the online mask without allocating a tmp
cpumask.  It's still fairly cheap.

We allocate the cpumask at the end of the call_function_data
structure: if allocation fails we fallback to smp_call_function_single
rather than using the baroque quiescing code (which needs a cpumask on
stack).

(Thanks to Hiroshi Shimamoto for spotting several bugs in previous versions!)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Cc: npiggin@suse.de
Cc: axboe@kernel.dk
2008-12-30 09:05:16 +10:30
..
irq
cpumask: make irq_set_affinity() take a const struct cpumask
2008-12-13 21:20:26 +10:30
power
Merge branches 'tracing/ftrace', 'tracing/ring-buffer' and 'tracing/urgent' into tracing/core
2008-12-19 09:42:40 +01:00
time
cpumask: convert struct clock_event_device to cpumask pointers.
2008-12-13 21:20:26 +10:30
trace
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2008-12-30 08:02:35 +10:30
.gitignore
…
acct.c
CRED: Wrap task credential accesses in the core kernel
2008-11-14 10:39:12 +11:00
audit_tree.c
Fix inotify watch removal/umount races
2008-11-15 12:26:44 -08:00
audit.c
[PATCH] fix broken timestamps in AVC generated by kernel threads
2008-12-09 02:27:41 -05:00
audit.h
…
auditfilter.c
Fix inotify watch removal/umount races
2008-11-15 12:26:44 -08:00
auditsc.c
Merge branch 'next' into for-linus
2008-12-25 11:40:09 +11:00
backtracetest.c
backtrace: replace timer with tasklet + completions
2008-06-27 18:09:16 +02:00
bounds.c
…
capability.c
CRED: Inaugurate COW credentials
2008-11-14 10:39:23 +11:00
cgroup_debug.c
cgroups: fix probable race with put_css_set[_taskexit] and find_css_set
2008-10-20 08:52:38 -07:00
cgroup_freezer.c
freezer_cg: disable writing freezer.state of root cgroup
2008-11-12 17:17:16 -08:00
cgroup.c
Merge branch 'next' into for-linus
2008-12-25 11:40:09 +11:00
compat.c
Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus
2008-10-20 13:14:06 +02:00
configs.c
kernel/configs.c: remove useless comments
2008-10-20 08:52:34 -07:00
cpu.c
cpumask: make set_cpu_*/init_cpu_* out-of-line
2008-12-30 09:05:16 +10:30
cpuset.c
cpumask: change cpumask_scnprintf, cpumask_parse_user, cpulist_parse, and cpulist_scnprintf to take pointers.
2008-12-13 21:20:25 +10:30
cred-internals.h
CRED: Inaugurate COW credentials
2008-11-14 10:39:23 +11:00
cred.c
User namespaces: set of cleanups (v2)
2008-11-24 18:57:41 -05:00
delayacct.c
schedstat: consolidate per-task cpu runtime stats
2008-12-18 13:54:01 +01:00
dma-coherent.c
dma-coherent: export dma_[alloc|release]_from_coherent methods
2008-08-22 08:34:53 +02:00
dma.c
kernel/dma.c: remove a CVS keyword
2008-10-16 11:21:30 -07:00
exec_domain.c
proc: move /proc/execdomains to kernel/exec_domain.c
2008-10-23 14:30:41 +04:00
exit.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
extable.c
tracing/function-graph-tracer: introduce __notrace_funcgraph to filter special functions
2008-12-08 15:11:44 +01:00
fork.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
freezer.c
freezer_cg: use thaw_process() in unfreeze_cgroup()
2008-10-30 11:38:45 -07:00
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
futex.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: clean up unused callback modes
2008-11-12 09:54:40 +01:00
itimer.c
timers: fix itimer/many thread hang
2008-09-14 16:25:35 +02:00
kallsyms.c
allow stripping of generated symbols under CONFIG_KALLSYMS_ALL
2008-12-19 22:47:10 +01:00
Kconfig.freezer
container freezer: implement freezer cgroup subsystem
2008-10-20 08:52:34 -07:00
Kconfig.hz
sched: fix SCHED_HRTICK dependency
2008-07-28 14:37:38 +02:00
Kconfig.preempt
…
kexec.c
kexec: fix crash_save_vmcoreinfo_init build problem
2008-10-20 15:28:50 -07:00
kfifo.c
…
kgdb.c
kgdb: call touch_softlockup_watchdog on resume
2008-10-06 13:50:59 -05:00
kmod.c
CRED: Inaugurate COW credentials
2008-11-14 10:39:23 +11:00
kprobes.c
kernel/kprobes.c: don't pad kretprobe_table_locks[] on uniprocessor builds
2008-11-12 17:17:17 -08:00
ksysfs.c
profiling: dynamically enable readprofile at runtime
2008-10-16 11:21:31 -07:00
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_internals.h
lockdep: build fix
2008-08-13 12:55:10 +02:00
lockdep_proc.c
lockstat: fix numerical output rounding error
2008-08-26 10:37:46 +02:00
lockdep.c
ftrace: replace raw_local_irq_save with local_irq_save
2008-12-03 08:56:19 +01:00
Makefile
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
marker.c
markers/tracpoints: fix non-modular build
2008-11-16 09:52:03 +01:00
module.c
tracing/function-graph-tracer: introduce __notrace_funcgraph to filter special functions
2008-12-08 15:11:44 +01:00
mutex-debug.c
mutex-debug: check mutex magic before owner
2008-05-16 16:53:35 +02:00
mutex-debug.h
…
mutex.c
locking: fix mutex @key parameter kernel-doc notation
2008-07-28 18:12:36 +02:00
mutex.h
…
notifier.c
ftrace: ignore functions that cannot be kprobe-ed
2008-10-14 10:34:22 +02:00
ns_cgroup.c
cgroup_clone: use pid of newly created task for new cgroup
2008-07-25 10:53:37 -07:00
nsproxy.c
User namespaces: set of cleanups (v2)
2008-11-24 18:57:41 -05:00
panic.c
taint: add missing comment
2008-12-01 19:55:24 -08:00
params.c
Fix compile warning in kernel/params.c
2008-10-23 12:09:00 -07:00
pid_namespace.c
pid_ns: (BUG 11391) change ->child_reaper when init->group_leader exits
2008-09-02 19:21:38 -07:00
pid.c
pidns: remove now unused find_pid function.
2008-07-25 10:53:45 -07:00
pm_qos_params.c
pm_qos_requirement might sleep
2008-09-02 19:21:40 -07:00
posix-cpu-timers.c
posix-cpu-timers: fix clock_gettime with CLOCK_PROCESS_CPUTIME_ID
2008-11-24 16:41:40 +01:00
posix-timers.c
Null pointer deref with hrtimer_try_to_cancel()
2008-12-20 14:13:45 -08:00
printk.c
printk: remove unused code from kernel/printk.c
2008-10-23 21:54:29 +02:00
profile.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2008-12-30 08:02:35 +10:30
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
rcu: RCU-based detection of stalled CPUs for Classic RCU, fix
2008-10-03 10:41:00 +02:00
rcupdate.c
rcupdate: fix bug of rcu_barrier*()
2008-10-21 15:59:53 +02:00
rcupreempt_trace.c
rcu: trace fix possible mem-leak
2008-08-15 17:54:40 +02:00
rcupreempt.c
byteorder: remove direct includes of linux/byteorder/swab[b].h
2008-10-20 08:52:40 -07:00
rcutorture.c
byteorder: remove direct includes of linux/byteorder/swab[b].h
2008-10-20 12:51:53 -07:00
relay.c
relayfs: fix infinite loop with splice()
2008-12-10 08:01:52 -08:00
res_counter.c
cgroup files: convert res_counter_write() to be a cgroups write_string() handler
2008-07-25 10:53:36 -07:00
resource.c
reserve_region_with_split: Fix GFP_KERNEL usage under spinlock
2008-11-01 09:53:58 -07:00
rtmutex_common.h
…
rtmutex-debug.c
…
rtmutex-debug.h
…
rtmutex-tester.c
sysdev: Pass the attribute to the low level sysdev show/store function
2008-07-21 21:55:02 -07:00
rtmutex.c
hrtimer: convert kernel/* to the new hrtimer apis
2008-09-05 21:35:13 -07:00
rtmutex.h
…
rwsem.c
…
sched_clock.c
Revert "sched_clock: prevent scd->clock from moving backwards"
2008-12-14 16:23:17 -08:00
sched_cpupri.c
sched: use a 2-d bitmap for searching lowest-pri CPU
2008-06-06 15:19:28 +02:00
sched_cpupri.h
sched: fix the cpuprio count really
2008-06-06 15:19:44 +02:00
sched_debug.c
sched: add uid information to sched_debug for CONFIG_USER_SCHED
2008-12-01 20:39:50 +01:00
sched_fair.c
sched: optimize update_curr()
2008-12-16 09:46:33 +01:00
sched_features.h
sched: backward looking buddy
2008-11-05 10:30:14 +01:00
sched_idletask.c
sched: add CONFIG_SMP consistency
2008-10-22 10:01:52 +02:00
sched_rt.c
Merge branch 'sched/urgent'; commit 'v2.6.28' into sched/core
2008-12-25 13:42:23 +01:00
sched_stats.h
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2008-12-30 08:02:35 +10:30
sched.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2008-12-30 08:02:35 +10:30
seccomp.c
…
semaphore.c
semaphore: __down_common: use signal_pending_state()
2008-08-05 14:33:47 -07:00
signal.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
smp.c
cpumask: smp_call_function_many()
2008-12-30 09:05:16 +10:30
softirq.c
irq: call __irq_enter() before calling the tick_idle_check
2008-11-10 22:36:39 +01:00
softlockup.c
check_hung_task(): unsigned sysctl_hung_task_warnings cannot be less than 0
2008-12-03 10:11:51 +01:00
spinlock.c
lockdep: spin_lock_nest_lock(), checkpatch fixes
2008-08-13 13:56:51 +02:00
srcu.c
…
stacktrace.c
stacktrace: fix modular build, export print_stack_trace and save_stack_trace
2008-06-30 09:20:55 +02:00
stop_machine.c
stop_machine: fix race with return value (fixes Bug #11989)
2008-11-16 15:09:52 -08:00
sys_ni.c
reintroduce accept4
2008-11-19 18:49:57 -08:00
sys.c
User namespaces: set of cleanups (v2)
2008-11-24 18:57:41 -05:00
sysctl_check.c
sysctl: check for bogus modes
2008-07-25 10:53:45 -07:00
sysctl.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
taskstats.c
cpumask: change cpumask_scnprintf, cpumask_parse_user, cpulist_parse, and cpulist_scnprintf to take pointers.
2008-12-13 21:20:25 +10:30
test_kprobes.c
…
time.c
select: add a timespec_add_safe() function
2008-09-05 21:34:57 -07:00
timeconst.pl
…
timer.c
Merge branch 'master' into next
2008-11-14 11:29:12 +11:00
tracepoint.c
markers/tracpoints: fix non-modular build
2008-11-16 09:52:03 +01:00
tsacct.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
uid16.c
CRED: Wrap current->cred and a few other accessors
2008-11-14 10:39:18 +11:00
user_namespace.c
User namespaces: set of cleanups (v2)
2008-11-24 18:57:41 -05:00
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
utsname_sysctl.c
sysctl: simplify ->strategy
2008-10-16 11:21:47 -07:00
utsname.c
removed unused #include <linux/version.h>'s
2008-08-23 12:14:12 -07:00
wait.c
wait: kill is_sync_wait()
2008-10-16 11:21:31 -07:00
workqueue.c
Merge branch 'master' into next
2008-11-14 11:29:12 +11:00