ShuoX Liu 2a77c46de1 PM / Suspend: Add statistics debugfs file for suspend to RAM ... Record S3 failure time about each reason and the latest two failed devices' names in S3 progress. We can check it through 'suspend_stats' entry in debugfs. The motivation of the patch: We are enabling power features on Medfield. Comparing with PC/notebook, a mobile enters/exits suspend-2-ram (we call it s3 on Medfield) far more frequently. If it can't enter suspend-2-ram in time, the power might be used up soon. We often find sometimes, a device suspend fails. Then, system retries s3 over and over again. As display is off, testers and developers don't know what happens. Some testers and developers complain they don't know if system tries suspend-2-ram, and what device fails to suspend. They need such info for a quick check. The patch adds suspend_stats under debugfs for users to check suspend to RAM statistics quickly. If not using this patch, we have other methods to get info about what device fails. One is to turn on CONFIG_PM_DEBUG, but users would get too much info and testers need recompile the system. In addition, dynamic debug is another good tool to dump debug info. But it still doesn't match our utilization scenario closely. 1) user need write a user space parser to process the syslog output; 2) Our testing scenario is we leave the mobile for at least hours. Then, check its status. No serial console available during the testing. One is because console would be suspended, and the other is serial console connecting with spi or HSU devices would consume power. These devices are powered off at suspend-2-ram. Signed-off-by: ShuoX Liu <shuox.liu@intel.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>		2011-10-16 23:27:45 +02:00
..
ABI	PM / devfreq: Add basic governors	2011-10-02 00:19:34 +02:00
accounting	Documentation: update cgroupfs mount point	2011-06-15 21:52:50 -07:00
acpi	ACPI, APEI, EINJ Param support is disabled by default	2011-08-03 11:15:59 -04:00
aoe
arm	Merge branch 'next/deletion' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc	2011-07-25 12:43:28 -07:00
auxdisplay
blackfin	Blackfin: spi-docs: further clarify GPIO CS behavior with various modes	2011-07-23 01:18:35 -04:00
block	cfq-iosched: Add documentation about idling	2011-08-05 09:42:20 +02:00
blockdev	doc: fix wrong arch/i386 references	2011-06-13 13:43:05 +02:00
cdrom
cgroups	memcg: Revert "memcg: add memory.vmscan_stat"	2011-09-14 18:09:38 -07:00
connector
console
cpu-freq	doc: fix wrong arch/i386 references	2011-06-13 13:43:05 +02:00
cpuidle
cris
crypto
development-process	sched: Generalize sleep inside spinlock detection	2011-06-23 00:44:38 +02:00
device-mapper	dm crypt: optionally support discard requests	2011-08-02 12:32:08 +01:00
devicetree	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2011-08-03 22:00:09 -10:00
DocBook	[media] v4l2: Fix documentation of the codec device controls	2011-09-11 09:33:38 -03:00
driver-model	DOCUMENTATION: Replace create_device() with device_create().	2011-06-07 10:04:22 -07:00
dvb	[media] em28xx: Change firmware name for Terratec H5 DRX-K	2011-07-27 17:55:51 -03:00
early-userspace
fault-injection	fault-injection: add ability to export fault_attr in arbitrary directory	2011-08-03 14:25:20 -10:00
fb	DRM: clean up and document parsing of video= parameter	2011-07-25 12:02:26 +01:00
filesystems	Documentation: befs.txt: no maintainer, orphaned	2011-08-13 18:34:03 -07:00
firmware_class
frv	Documentation: add pointer to name_to_dev_t for root= values	2011-08-03 14:25:21 -10:00
hid	HID: Move hiddev.txt to the new Documentation/hid directory	2011-03-22 11:43:51 +01:00
hwmon	hwmon: (coretemp) Don't use threshold registers for tempX_max	2011-09-21 17:25:18 -07:00
i2c	i2c-i801: SMBus patch for Intel Panther Point DeviceIDs	2011-05-24 20:58:49 +02:00
i2o	doc: i2o: fix typo 'Settting'	2011-06-07 16:06:01 +02:00
ia64	Fix common misspellings	2011-03-31 11:26:23 -03:00
ide
infiniband
input	Input: elantech - describe further the protocol	2011-05-16 22:48:24 -07:00
ioctl	ioctl: register LTTng ioctl	2011-09-12 11:50:56 -07:00
isdn	doc: fix wrong arch/i386 references	2011-06-13 13:43:05 +02:00
ja_JP	Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6	2011-07-25 23:06:24 -07:00
kbuild	doc: fix wrong arch/i386 references	2011-06-13 13:43:05 +02:00
kdump	kdump: update kexec-tools URL and Vivek's email	2010-11-25 14:36:38 +01:00
ko_KR	Docs/Kconfig: Update: osdl.org -> linuxfoundation.org	2010-11-15 23:50:13 +01:00
laptops	thinkpad-acpi: handle HKEY 0x4010, 0x4011 events	2011-07-07 10:39:05 -04:00
leds	Documentation: consolidate leds files to leds/ subdir	2011-04-04 17:51:47 -07:00
m68k	Documentation: add pointer to name_to_dev_t for root= values	2011-08-03 14:25:21 -10:00
make	kbuild: introduce HDR_ARCH_LIST for headers_install_all	2010-12-14 22:16:19 +01:00
mips	Fix common misspellings	2011-03-31 11:26:23 -03:00
misc-devices	Fix common misspellings	2011-03-31 11:26:23 -03:00
mmc	mmc: documentation of mmc non-blocking request usage and design.	2011-07-21 10:34:52 -04:00
mn10300
mtd
namespaces
netlabel
networking	net: fix typos in Documentation/networking/scaling.txt	2011-10-06 15:58:24 -04:00
nfc	NFC: Driver for NXP Semiconductors PN544 NFC chip.	2011-01-13 08:03:19 -08:00
parisc
PCI	Docs: MSI-HOWTO: MSI -> MSIs	2011-08-02 21:34:41 +00:00
pcmcia
power	PM / Suspend: Add statistics debugfs file for suspend to RAM	2011-10-16 23:27:45 +02:00
powerpc	Fix common misspellings	2011-03-31 11:26:23 -03:00
pps	pps: add parallel port PPS signal generator	2011-01-13 08:03:21 -08:00
prctl
pti	Kernel documentation for the PTI feature.	2011-05-13 16:31:00 -07:00
ptp	ptp: Added a brand new class driver for ptp clocks.	2011-05-23 13:01:00 -07:00
rapidio	rapidio: add RapidIO documentation	2011-03-23 19:46:41 -07:00
RCU	doc: fix wrong arch/i386 references	2011-06-13 13:43:05 +02:00
s390	[S390] remove tape block docu	2011-07-24 10:48:22 +02:00
scheduler	Merge branch 'master' into for-next	2011-07-11 14:15:55 +02:00
scsi	[SCSI] megaraid_sas Version to 5.40-rc1 and Changelog update	2011-07-27 15:45:22 +04:00
security	encrypted-keys: move ecryptfs documentation to proper location	2011-06-30 19:08:14 +10:00
serial	doc: fix wrong arch/i386 references	2011-06-13 13:43:05 +02:00
sh	sh: clkfwk: Kill off unused clk_set_rate_ex().	2010-11-15 18:25:12 +09:00
sound	ALSA: hda - Add documentation for codec-specific mixer controls	2011-07-19 09:34:10 +02:00
sparc
spi	spi/pxa2xx: Remove unavailable ssp_type from documentation	2011-06-18 22:36:30 -06:00
sysctl	ipc: introduce shm_rmid_forced sysctl	2011-07-26 16:49:44 -07:00
target	[SCSI] tcm_mod_builder.py: Fix generated *_drop_nodeacl() handler	2011-03-23 11:36:45 -05:00
telephony	Fix common misspellings	2011-03-31 11:26:23 -03:00
thermal	thermal: Add event notification to thermal framework	2011-01-12 00:08:35 -05:00
timers	doc: timers-howto: fix a typo ("unsgined")	2011-05-17 10:52:02 +02:00
trace	tracing/kprobes: Support module init function probing	2011-07-15 15:17:14 -04:00
usb	PM / Runtime: Add macro to test for runtime PM events	2011-08-19 23:49:48 +02:00
vDSO	Document the vDSO and add a reference parser	2011-07-14 17:57:09 -07:00
video4linux	[media] v4l2-framework.txt: update v4l2_event section	2011-07-27 17:53:33 -03:00
virtual	lguest: allow booting guest with CONFIG_RELOCATABLE=y	2011-08-15 10:15:10 +09:30
vm	thp: fix khugepaged defrag tunable documentation	2011-09-22 14:27:14 -07:00
w1	Fix common misspellings	2011-03-31 11:26:23 -03:00
watchdog	watchdog: WatchDog Timer Driver Core - Add minimum and max timeout	2011-07-28 08:01:18 +00:00
wimax
x86	Merge commit 'v3.0' into x86/vdso	2011-08-04 16:13:20 -07:00
zh_CN	Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6	2011-07-25 23:06:24 -07:00
.gitignore
00-INDEX	Documentation: add Ramoops usage description	2011-08-13 18:34:03 -07:00
applying-patches.txt
atomic_ops.txt	Documentation/atomic_ops.txt: avoid volatile in sample code	2011-05-26 17:12:34 -07:00
bad_memory.txt
basic_profiling.txt
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt	mm: convert mm->cpu_vm_cpumask into cpumask_var_t	2011-05-25 08:39:21 -07:00
Changes	Documentation/Changes: remove some really obsolete text	2011-07-11 16:48:38 -07:00
circular-buffers.txt
coccinelle.txt	scripts/coccinelle: update for compatability with Coccinelle 0.2.4	2010-12-03 12:27:01 +01:00
CodingStyle	CodingStyle: Document the exception of not splitting user-visible strings, for grepping	2011-08-06 11:59:07 -07:00
cpu-hotplug.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
cpu-load.txt
cputopology.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
devices.txt	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2010-10-28 09:35:11 -07:00
DMA-API-HOWTO.txt	Documentation/DMA-API-HOWTO.txt: fix misleading example	2011-07-26 16:49:45 -07:00
DMA-API.txt
DMA-attributes.txt
DMA-ISA-LPC.txt
dmaengine.txt	Improve slave/cyclic DMA engine documentation	2011-07-27 20:33:48 +05:30
dontdiff	Documentation: update dontdiff file	2011-05-23 15:14:11 -07:00
dynamic-debug-howto.txt	Merge branch 'docs-next' of git://git.lwn.net/linux-2.6	2011-03-27 19:46:59 -07:00
edac.txt	Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6	2011-04-07 11:14:49 -07:00
eisa.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
email-clients.txt	Documentation: email-clients: Add better Thunderbird information	2011-08-13 18:34:03 -07:00
feature-removal-schedule.txt	xfs: deprecate the nodelaylog mount option	2011-08-25 10:30:05 -05:00
flexible-arrays.txt	flex_array: flex_array_prealloc takes a number of elements, not an end	2011-04-28 16:12:47 -04:00
futex-requeue-pi.txt
gcov.txt
gpio.txt	Revert "gpiolib: annotate gpio-intialization with __must_check"	2011-01-13 17:26:46 -08:00
highuid.txt
HOWTO	Documentation: update LXR web link	2011-05-23 15:14:11 -07:00
hw_random.txt
hwspinlock.txt	drivers: hwspinlock: add framework	2011-02-17 09:52:03 -08:00
init.txt
initrd.txt
Intel-IOMMU.txt
intel_txt.txt
io-mapping.txt
io_ordering.txt
iostats.txt	Documentation/iostats.txt: bit-size reference etc.	2011-03-23 20:44:18 +01:00
IPMI.txt	IPMI: Add the document description of ipmi_get_smi_info	2010-12-14 00:22:00 -05:00
IRQ-affinity.txt	bitmap, irq: add smp_affinity_list interface to /proc/irq	2011-05-25 08:39:45 -07:00
IRQ.txt
irqflags-tracing.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt
kernel-docs.txt	Documentation: drop Linux Source Driver from kernel-docs references	2011-08-13 18:34:02 -07:00
kernel-parameters.txt	Merge branches 'apei', 'bz-13195' and 'doc' into acpi	2011-09-12 20:00:00 -04:00
kmemcheck.txt
kmemleak.txt	Documentation: update kmemleak supported archs	2011-06-15 21:52:50 -07:00
kobject.txt
kprobes.txt	tree-wide: fix comment/printk typos	2010-11-01 15:38:34 -04:00
kref.txt	kref: Fix typo in kref documentation	2011-03-07 13:20:05 -08:00
ldm.txt
local_ops.txt
lockdep-design.txt
lockstat.txt	Documentation: Add statistics about nested locks	2011-05-28 17:03:29 +02:00
logo.gif
logo.txt
magic-number.txt	doc: fix wrong arch/i386 references	2011-06-13 13:43:05 +02:00
Makefile	[media] Remove the old V4L1 v4lgrab.c file	2010-12-29 08:17:12 -02:00
ManagementStyle
mca.txt	doc: fix wrong arch/i386 references	2011-06-13 13:43:05 +02:00
md.txt	md: update documentation for md/rdev/state sysfs interface	2011-07-28 11:31:48 +10:00
media-framework.txt	[media] v4l: Fix minor typos in the documentation	2011-07-27 17:53:10 -03:00
memory-barriers.txt	smp: Document transitivity for memory barriers.	2011-03-04 08:05:49 -08:00
memory-hotplug.txt	memory hotplug: Allow memory blocks to span multiple memory sections	2011-02-03 16:08:57 -08:00
memory.txt
mono.txt
mutex-design.txt
nmi_watchdog.txt
nommu-mmap.txt
numastat.txt
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt
pi-futex.txt
pnp.txt
preempt-locking.txt
printk-formats.txt	Documentation: update printk-formats.txt	2011-06-15 21:52:50 -07:00
prio_tree.txt
ramoops.txt	Documentation: add Ramoops usage description	2011-08-13 18:34:03 -07:00
rbtree.txt	Documentation: Update augmented rbtree documentation	2011-07-24 10:03:05 -07:00
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rt-mutex-design.txt
rt-mutex.txt
rtc.txt	RTC: Fix up rtc.txt documentation to reflect changes to generic rtc layer	2011-03-09 11:25:10 -08:00
SAK.txt
SecurityBugs	Fix common misspellings	2011-03-31 11:26:23 -03:00
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt
sparse.txt
spinlocks.txt	Documentation/spinlocks.txt: Remove reference to sti()/cli()	2011-07-11 12:45:04 -07:00
stable_api_nonsense.txt	doc: stable_api_nonsense.txt: fix paragraph to make more sense.	2011-03-30 12:02:05 +02:00
stable_kernel_rules.txt
SubmitChecklist	Documentation/SubmitChecklist: add RCU debug config options	2011-07-25 20:57:17 -07:00
SubmittingDrivers	Documentation: SubmittingDrivers: fix Linus's git tree URL	2011-08-13 18:34:03 -07:00
SubmittingPatches	Documentation: fix spelling error in SubmittingPatches	2011-08-13 18:34:02 -07:00
svga.txt
sysfs-rules.txt
sysrq.txt
unaligned-memory-access.txt
unicode.txt
unshare.txt
VGA-softcursor.txt
vgaarbiter.txt	Documentation: fix vgaarbiter.txt typos etc.	2011-05-23 15:14:11 -07:00
video-output.txt
volatile-considered-harmful.txt
workqueue.txt	workqueue: Document debugging tricks	2011-03-31 13:40:42 +02:00
xz.txt	decompressors: add XZ decompressor module	2011-01-13 08:03:24 -08:00
zorro.txt