github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-09 15:12:59 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph
87043a278c
linux/kernel
History
黄涛 c6e6466d05 power: fix lcd resume taking long time with an ongoing file copy 
port from msm:
This fixes the issue where LCD takes a long time to come back up
since the execution of backlight on and late_resume works by the
suspend worker thread is delayed due to one (or more) of the
sys_sync calls in early_suspend and suspend paths taking a long
time (sometimes 15sec or more) for the below reported scenario(s):

Scenario 1 (copy with usb connected):
1. plug usb
2. adb shell
3. busybox cp /sdcard/file1 /sdcard/file2 (copy >= 100MB file1
   in sdcard/emmc to file2 in sdcard/emmc)
4. press end key to suspend
5. press end key again and it takes a long time for LCD to come
   back up

Scenario 2 (background copy):
1. plug usb
2. adb shell
3. busybox cp /sdcard/file1 /sdcard/file2 & (copy >= 100MB file1
   in sdcard/emmc to file2 in sdcard/emmc)
4. disconnect usb
5. press end key to suspend
6. press end key again and it takes a long time for LCD to come
   back up

A more common form of Scenario 2 is for the user to just use the
copy function on the UI to copy large file(s).

We address this by moving sys_sync calls to a separate workqueue
and having a timeout polling based mechanism to bail out of suspend
in case of user invoking a wakeup event (like end key press) while
we are waiting for the sys_sync completion at the synchronization
point in suspend worker thread context.
2011-12-28 14:46:00 +08:00
..
debug
events perf: Fix software event overflow 2011-08-04 21:58:35 -07:00
gcov Revert "Merge remote branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:24:52 +08:00
irq revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
power power: fix lcd resume taking long time with an ongoing file copy 2011-12-28 14:46:00 +08:00
time Fix "time: Catch invalid timespec sleep values in __timekeeping_inject_sleeptime" to compile on 3.0 2011-11-22 16:49:43 -08:00
trace revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
.gitignore
acct.c Revert "Merge commit 'v2.6.32.9' into android-2.6.32" 2011-07-30 22:24:29 +08:00
async.c
audit_tree.c Revert "Merge commit 'v2.6.32.9' into android-2.6.32" 2011-07-30 22:24:29 +08:00
audit_watch.c
audit.c
audit.h
auditfilter.c
auditsc.c audit: acquire creds selectively to reduce atomic op overhead 2011-04-27 15:11:03 +02:00
backtracetest.c
bounds.c
capability.c Revert "Merge remote-tracking branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:09:59 +08:00
cgroup_freezer.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
cgroup.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
compat.c Revert "Merge remote branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:24:52 +08:00
configs.c
cpu.c Revert "Merge commit 'v2.6.32.9' into android-2.6.32" 2011-07-30 22:24:29 +08:00
cpuset.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
crash_dump.c
cred.c Revert "Merge commit 'v2.6.32.9' into android-2.6.32" 2011-07-30 22:24:29 +08:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
extable.c extable, core_kernel_data(): Make sure all archs define _sdata 2011-05-20 08:56:56 +02:00
fork.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
freezer.c Freezer: Use SMP barriers 2011-05-17 23:19:17 +02:00
futex_compat.c
futex.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
groups.c Revert "Merge remote branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:24:52 +08:00
hrtimer.c Revert "Merge remote branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:24:52 +08:00
hung_task.c watchdog, hung_task_timeout: Add Kconfig configurable default 2011-04-28 09:13:17 +02:00
irq_work.c
itimer.c
jump_label.c jump_label: Fix jump_label update for modules 2011-06-29 09:59:17 -04:00
kallsyms.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c PM: Remove sysdev suspend, resume and shutdown operations 2011-05-11 21:37:15 +02:00
kfifo.c
kmod.c KEYS/DNS: Fix ____call_usermodehelper() to not lose the session keyring 2011-06-17 09:40:48 -07:00
kprobes.c
ksysfs.c Revert "Merge remote-tracking branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:09:59 +08:00
kthread.c Revert "Merge remote branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:24:52 +08:00
latencytop.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
lockdep.c Revert "Merge remote-tracking branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:01:15 +08:00
Makefile cgroup: remove the ns_cgroup 2011-05-26 17:12:34 -07:00
module.c Merge remote-tracking branch 'remotes/aosp/android-3.0' into develop-3.0 2011-10-28 16:07:07 +08:00
mutex-debug.c
mutex-debug.h
mutex.c Revert "Merge remote branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:24:52 +08:00
mutex.h
notifier.c
nsproxy.c cgroup: remove the ns_cgroup 2011-05-26 17:12:34 -07:00
padata.c
panic.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
params.c params.c: Use new strtobool function to process boolean inputs 2011-05-19 16:55:28 +09:30
pid_namespace.c
pid.c Revert "Merge remote-tracking branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:09:59 +08:00
pm_qos_params.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
posix-cpu-timers.c cputimer: Cure lock inversion 2011-10-25 07:10:14 +02:00
posix-timers.c Revert "Merge remote branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:24:52 +08:00
printk.c Merge remote-tracking branch 'remotes/aosp/android-3.0' into develop-3.0 2011-11-09 13:06:28 +08:00
profile.c Revert "Merge remote branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:24:52 +08:00
ptrace.c Revert "Merge remote-tracking branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:09:59 +08:00
range.c
rcupdate.c rcu: Use WARN_ON_ONCE for DEBUG_OBJECTS_RCU_HEAD warnings 2011-05-05 23:16:57 -07:00
rcutiny_plugin.h rcu: Converge TINY_RCU expedited and normal boosting 2011-05-05 23:16:58 -07:00
rcutiny.c sanitize <linux/prefetch.h> usage 2011-05-20 12:50:29 -07:00
rcutorture.c rcu: mark rcutorture boosting callback as being on-stack 2011-05-05 23:16:57 -07:00
rcutree_plugin.h Revert "Merge commit 'v2.6.32.9' into android-2.6.32" 2011-07-30 22:24:29 +08:00
rcutree_trace.c rcu: use softirq instead of kthreads except when RCU_BOOST=y 2011-06-15 23:07:21 -07:00
rcutree.c Revert "Merge commit 'v2.6.32.9' into android-2.6.32" 2011-07-30 22:24:29 +08:00
rcutree.h Revert "Merge commit 'v2.6.32.9' into android-2.6.32" 2011-07-30 22:24:29 +08:00
relay.c
res_counter.c
resource.c resource: ability to resize an allocated resource 2011-07-06 10:54:08 -07:00
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c plist: Remove the need to supply locks to plist heads 2011-07-08 14:15:44 -07:00
rtmutex.h
rwsem.c
sched_autogroup.c
sched_autogroup.h
sched_clock.c Revert "Merge commit 'v2.6.32.9' into android-2.6.32" 2011-07-30 22:24:29 +08:00
sched_cpupri.c
sched_cpupri.h
sched_debug.c Revert "Merge commit 'v2.6.32.9' into android-2.6.32" 2011-07-30 22:24:29 +08:00
sched_fair.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
sched_features.h Revert "Merge remote-tracking branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:09:59 +08:00
sched_idletask.c Revert "Merge remote branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:24:52 +08:00
sched_rt.c sched/rt: Migrate equal priority tasks to available CPUs 2011-10-16 14:14:51 -07:00
sched_stats.h sched: More sched_domain iterations fixes 2011-05-28 17:02:54 +02:00
sched_stoptask.c
sched.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
seccomp.c
semaphore.c
signal.c Revert "Merge commit 'v2.6.32.9' into android-2.6.32" 2011-07-30 22:24:29 +08:00
smp.c Revert "Merge remote-tracking branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:09:59 +08:00
softirq.c Revert "Merge remote-tracking branch 'linux-2.6.32.y/master' into develop" 2011-07-30 16:09:59 +08:00
spinlock.c
srcu.c
stacktrace.c
stop_machine.c x86, mtrr: lock stop machine during MTRR rendezvous sequence 2011-08-29 13:29:08 -07:00
sys_ni.c ipc: Add missing sys_ni entries for ipc/compat.c functions 2011-05-20 13:53:02 -07:00
sys.c Merge remote-tracking branch 'remotes/aosp/android-3.0' into develop-3.0 2011-11-09 13:06:28 +08:00
sysctl_binary.c
sysctl_check.c Revert "Merge commit 'v2.6.32.9' into android-2.6.32" 2011-07-30 22:24:29 +08:00
sysctl.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
taskstats.c taskstats: don't allow duplicate entries in listener mode 2011-06-27 18:00:13 -07:00
test_kprobes.c
time.c
timeconst.pl
timer.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
tracepoint.c
tsacct.c
uid16.c
up.c
user_namespace.c
user-return-notifier.c
user.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
utsname_sysctl.c
utsname.c ns proc: Add support for the uts namespace 2011-05-10 14:35:35 -07:00
wait.c
watchdog.c revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36 2011-10-28 16:02:47 +08:00
workqueue_sched.h
workqueue.c workqueue: lock cwq access in drain_workqueue 2011-10-03 11:40:31 -07:00