kernel-fxtec-pro1x/kernel
Lai Jiangshan a5b4e57d7c workqueue: use hotcpu_notifier() for workqueue_cpu_down_callback()
workqueue_cpu_down_callback() is used only if HOTPLUG_CPU=y, so
hotcpu_notifier() fits better than cpu_notifier().

When HOTPLUG_CPU=y, hotcpu_notifier() and cpu_notifier() are the same.

When HOTPLUG_CPU=n, if we use cpu_notifier(),
workqueue_cpu_down_callback() will be called during boot to do
nothing, and the memory of workqueue_cpu_down_callback() and
gcwq_unbind_fn() will be discarded after boot.

If we use hotcpu_notifier(), we can avoid the no-op call of
workqueue_cpu_down_callback() and the memory of
workqueue_cpu_down_callback() and gcwq_unbind_fn() will be discard at
build time:

$ ls -l kernel/workqueue.o.cpu_notifier kernel/workqueue.o.hotcpu_notifier
-rw-rw-r-- 1 laijs laijs 484080 Sep 15 11:31 kernel/workqueue.o.cpu_notifier
-rw-rw-r-- 1 laijs laijs 478240 Sep 15 11:31 kernel/workqueue.o.hotcpu_notifier

$ size kernel/workqueue.o.cpu_notifier kernel/workqueue.o.hotcpu_notifier
   text	   data	    bss	    dec	    hex	filename
  18513	   2387	   1221	  22121	   5669	kernel/workqueue.o.cpu_notifier
  18082	   2355	   1221	  21658	   549a	kernel/workqueue.o.hotcpu_notifier

tj: Updated description.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2012-09-18 09:59:23 -07:00
..
debug kdb: Switch to nolock variants of kmsg_dump functions 2012-07-21 10:34:00 -07:00
events uprobes: __replace_page() needs munlock_vma_page() 2012-07-30 11:27:25 +02:00
gcov
irq irqdomain changes for Linux v3.6 2012-07-31 20:44:03 -07:00
power NMI watchdog: fix for lockup detector breakage on resume 2012-07-30 17:25:13 -07:00
sched Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-07-31 15:34:13 -07:00
time Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-07-22 11:35:46 -07:00
trace Staging tree patches for 3.6-rc1 2012-07-26 11:14:49 -07:00
.gitignore
acct.c
async.c [SCSI] async: make async_synchronize_full() flush all work regardless of domain 2012-07-20 09:07:37 +01:00
audit.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-08-01 10:26:23 -07:00
audit.h
audit_tree.c VFS: Make clone_mnt()/copy_tree()/collect_mounts() return errors 2012-07-14 16:37:27 +04:00
audit_watch.c get rid of kern_path_parent() 2012-07-14 16:35:02 +04:00
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
cgroup.c Merge branch 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2012-07-24 17:47:44 -07:00
cgroup_freezer.c
compat.c
configs.c
cpu.c mm/hotplug: correctly setup fallback zonelists when creating new pgdat 2012-07-31 18:42:44 -07:00
cpu_pm.c
cpuset.c cpusets: Remove/update outdated comments 2012-07-24 13:53:28 +02:00
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c posix_types.h: Cleanup stale __NFDBITS and related definitions 2012-07-26 13:36:43 -07:00
extable.c
fork.c memcg: rename config variables 2012-07-31 18:42:43 -07:00
freezer.c
futex.c
futex_compat.c
groups.c
hrtimer.c hrtimer: Update hrtimer base offsets each hrtimer_interrupt 2012-07-11 23:34:39 +02:00
hung_task.c
irq_work.c
itimer.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c kdump: append newline to the last lien of vmcoreinfo note 2012-07-30 17:25:20 -07:00
kfifo.c
kmod.c kmod: avoid deadlock from recursive kmod call 2012-07-30 17:25:20 -07:00
kprobes.c
ksysfs.c
kthread.c kthread_worker: reimplement flush_kthread_work() to allow freeing the work item being executed 2012-07-22 10:15:28 -07:00
latencytop.c
lglock.c
lockdep.c
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile
module.c
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
nsproxy.c
padata.c
panic.c panic: fix a possible deadlock in panic() 2012-07-30 17:25:13 -07:00
params.c
pid.c
pid_namespace.c pidns: guarantee that the pidns init will be the last pidns process reaped 2012-06-20 14:39:36 -07:00
posix-cpu-timers.c
posix-timers.c
printk.c printk: only look for prefix levels in kernel messages 2012-07-30 17:25:14 -07:00
profile.c
ptrace.c
range.c
rcu.h
rcupdate.c rcu: Consolidate tree/tiny __rcu_read_{,un}lock() implementations 2012-07-02 12:34:23 -07:00
rcutiny.c rcu: Fix rcu_is_cpu_idle() #ifdef in TINY_RCU 2012-07-02 12:34:25 -07:00
rcutiny_plugin.h rcu: Fix code-style issues involving "else" 2012-07-06 06:01:48 -07:00
rcutorture.c rcu: Fix broken strings in RCU's source code. 2012-07-06 06:01:49 -07:00
rcutree.c rcu: Fix code-style issues involving "else" 2012-07-06 06:01:48 -07:00
rcutree.h Merge branches 'bigrtm.2012.07.04a', 'doctorture.2012.07.02a', 'fixes.2012.07.06a' and 'fnh.2012.07.02a' into HEAD 2012-07-06 05:59:30 -07:00
rcutree_plugin.h rcu: Fix code-style issues involving "else" 2012-07-06 06:01:48 -07:00
rcutree_trace.c rcu: Fix broken strings in RCU's source code. 2012-07-06 06:01:49 -07:00
relay.c splice: fix racy pipe->buffers uses 2012-06-13 21:16:42 +02:00
res_counter.c
resource.c resource: make sure requested range is included in the root range 2012-07-30 17:25:21 -07:00
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
seccomp.c
semaphore.c
signal.c signal: make sure we don't get stopped with pending task_work 2012-07-22 23:57:54 +04:00
smp.c
smpboot.c
smpboot.h smpboot: Remove leftover declaration 2012-06-11 15:07:52 +02:00
softirq.c mm: allow PF_MEMALLOC from softirq context 2012-07-31 18:42:45 -07:00
spinlock.c
srcu.c workqueue: deprecate system_nrt[_freezable]_wq 2012-08-20 14:51:24 -07:00
stacktrace.c
stop_machine.c
sys.c kernel/sys.c: avoid argv_free(NULL) 2012-07-30 17:25:13 -07:00
sys_ni.c
sysctl.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-08-01 10:26:23 -07:00
sysctl_binary.c mm: prepare for removal of obsolete /proc/sys/vm/nr_pdflush_threads 2012-07-31 18:42:40 -07:00
task_work.c deal with task_work callbacks adding more work 2012-07-22 23:57:57 +04:00
taskstats.c taskstats: check nla_reserve() return 2012-07-30 17:25:21 -07:00
test_kprobes.c
time.c
timeconst.pl
timer.c timer: Implement TIMER_IRQSAFE 2012-08-21 16:28:31 +02:00
tracepoint.c
tsacct.c
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
wait.c
watchdog.c NMI watchdog: fix for lockup detector breakage on resume 2012-07-30 17:25:13 -07:00
workqueue.c workqueue: use hotcpu_notifier() for workqueue_cpu_down_callback() 2012-09-18 09:59:23 -07:00
workqueue_sched.h