[9610] fbdev: dpu20: fixed decon reg update timeout

Change-Id: I5dbdbb4c6309e75a65af402a5eb888df5ceb619d
Signed-off-by: ChiHun Won <chihun.won@samsung.com>

[9610] fbdev: dpu20: cal9610: changed idma enum type

Change-Id: Id58f51a14360be0630bd1f804a7aa2f94f2420fd
Signed-off-by: ChiHun Won <chihun.won@samsung.com>

[9610] fbdev: dpu20: cal9610: updated dsim cal code

Change-Id: I78fd5229ab055a5233a776414f7f6782dde59fd1
Signed-off-by: ChiHun Won <chihun.won@samsung.com>

[9610] fbdev: dpu20: change base address setting function.

Change-Id: I14463e7319d6f8f5bde163ded131b0dc99924cae
Signed-off-by: Jiun Yu <jiun.yu@samsung.com>

[HACK] power: Held temp wakelock.

Change-Id: Ia21de3beef3726e4b170fdcbe690af51a50c1cb7
Signed-off-by: Jang JeongHoon <jnghn.jang@samsung.com>

[9610] arm64: config: erd9610_defconfig: Enable gnss interface drvier

Change-Id: I083fc268fc322a9de8b420ae7178783dbd64cff6
Signed-off-by: Taejin Kim <tj7.kim@samsung.com>

[9610] arm64: dts: exynos9610-erd9610.dts: Apply GNSS interface

Change-Id: Id85c5357ea2bd4338fb80f3e6ffcfde25bac1532
Signed-off-by: Taejin Kim <tj7.kim@samsung.com>

[COMMON] drivers: misc: gnss_if: Apply GNSS driver files

 GNSS drvier filese were came from branch android-exynos-4.9-ww-9610-stable

Change-Id: Ifb9c15ed8dee6051cd5c52312a7325793a7b3c79
Signed-off-by: Taejin Kim <tj7.kim@samsung.com>

[9610] arm64: config: erd9610_defconfig: Enable modem interface drvier

Change-Id: I97db565b6f79ce9d3cc7cf28e09089e5b2eae953
Signed-off-by: Taejin Kim <tj7.kim@samsung.com>

[9610] arch: arm64: Apply modem interface DTS

Change-Id: I6a7b9acdcc8d6c3a0b2aa889695461a00b185cec
Signed-off-by: Taejin Kim <tj7.kim@samsung.com>

[9610] arch: arm64: dts: Apply CP shared memory size to 138MB

Change-Id: I89251ef3e1bf2e14a8aa0fd8d288ae48c53ccd03
Signed-off-by: Taejin Kim <tj7.kim@samsung.com>

[COMMON] drivers: modem_if: Apply modem interface driver files

 Apply modem interface driver files from modem main branch
 TAG: ModemIF-4.9-20180509

Change-Id: I190896ee5cb9758e06618f4a6f458a89fa241c70
Signed-off-by: Taejin Kim <tj7.kim@samsung.com>

[COMMON] drivers: misc: mcu_ipc: Apply mcu_ipc & shm_ipc drivers

Change-Id: Ibf0effbf91de968eccbda381efa3a66315cb0f3f
Signed-off-by: Taejin Kim <tj7.kim@samsung.com>

[9610] drivers: soc: Apply CP & GNSS PMUCAL

Change-Id: I9948a3d1102af1fafdac0f0a449d3dab035de7bd
Signed-off-by: Taejin Kim <tj7.kim@samsung.com>

[9610] arm64: dtsi: add SHUB pinctrl alias

Change-Id: I59866d8bdb364576ba9f25cd93235cf826957de5
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>

[COMMON] pinctrl: samsung: Fixed pinctrl suspend func

1. Removed duplicate condition processing part.
2. Fix return value in suspend function.

Change-Id: I57dbb2286cc3d51a22c36b5f800729935aa8c15b
Signed-off-by: Jaehyoung Choi <jkkkkk.choi@samsung.com>

[COMMON] pinctrl: samsung: Fix pm function

gpz's power is controlled by audio block. This patch does not execute
pm function when its ctrl has no suspend or resume function.

This commit is based on ab55ec9f9b6e0a053052c8c1a40da6a84b8b6600.

Change-Id: I05accfa7610b5f0cce4e742c2c9d977cbbd07e06
Signed-off-by: eunki_kim <eunki_kim@samsung.com>
Signed-off-by: Gyeongtaek Lee <gt82.lee@samsung.com>

Revert "pinctrl: samsung: Replace syscore ops with standard platform device pm_ops"

This reverts commit 2b24efa8e5c5042b0f126c09622b3e9e3c86a4fa.

Change-Id: Ibf64c5bd8ff7acaa24a4aa39fdcead46eec891cf

Revert "pinctrl: samsung: mark PM functions as __maybe_unused"

This reverts commit 304c92e8fcf5863a40de60baf0576cab6b046bcf.

Change-Id: I8f8e917417689e7b3d5cccce9b7a764fb223fd2d

[COMMON] pinctrl: samsung: Fix duplicated bank structs

Change-Id: Ic19c8d29e6c3d8c090dfccd4dc723bd476ad98b9
Signed-off-by: Jaehyoung Choi <jkkkkk.choi@samsung.com>

[9610] pinctrl: samsung: fix 9610 pinctrl description

Change-Id: If7c363af038fcb99633f4f3ab81d6ad3d089b9cf
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>

[COMMON] pinctrl: samsung: clear pinctrl state to disable mux configuration

This patch clear pinctrl state before running pinctrl_force_sleep.
By clearing pinctrl state, we can avoid warning log in pinmux_disable_setting().

Change-Id: I08035b77064d8fc7690989ba1f58ef0f71029ec3
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>

[COMMON] pinctrl: samsung : skip dbg_show in case of power off gpio block

If the power control of some gpio block is done by own power block,
we should not register pinctrl suspend / reusme call back.
We also should not access that gpio block through pinctrl debug_fs.

This patch skips access of power off gpio block through pinctrl dbg show function

Change-Id: I0885f332551052de509a0a9cdbd9baf6da820101
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>

[9610][ERD] arm64: dts: Fix touchscreen gpio pin

Change-Id: I6d19bc582f35038e4cbd0afb6c94362ccdd06666
Signed-off-by: Jaehyoung Choi <jkkkkk.choi@samsung.com>

android: ion: push cma heap to kmemleak_ignore

A reserved memory allocated by memblock is traceable by kmemleak. It
also applies to CMA areas. But CMA areas are different from other
reserved memories. They are unreserved after the kmem is initialized.
It means that the pages in CMA areas are not allocated/reserved once
all pages in CMA areas are returned to the kernel page allocator.
Therefore a reserved memory to be a CMA area should be ignored by
kmemleak.

Change-Id: I17c6511bb2b9ad1279821092fe8ba1a0d0a63e6b
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

[9610][ERD] arm64: configs: enable lockup detector

Change-Id: I29a71149d65bdd6f0b258c6fa06ffcfac64da704
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>

[9610][ERD] arm64: configs: enable memory debugging config

Change-Id: I53e3b3189a1593bdb35cf3ab0b9918bc510eadfe
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>

[9610][ERD] arm64: config: add missing config

Change-Id: Ia3e131645eb34f909a02461e5afce71307d92e20
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>

[COMMON] kernel: watchdog: detect hard lockups without NMIs using secondary cpus

Emulate NMIs on systems where they are not available by using timer
interrupts on other cpus.  Each cpu will use its softlockup hrtimer
to check that the next cpu is processing hrtimer interrupts by
verifying that a counter is increasing.

This patch is useful on systems where the hardlockup detector is not
available due to a lack of NMIs, for example most ARM SoCs.
Without this patch any cpu stuck with interrupts disabled can
cause a hardware watchdog reset with no debugging information,
but with this patch the kernel can detect the lockup and panic,
which can result in useful debugging info.

Change-Id: I0363ee438625863f466dd07ef4b14d8094822840
Signed-off-by: Hyunki Koo <hyunki00.koo@samsung.com>
Signed-off-by: Changki Kim <changki.kim@samsung.com>

[9610] arch: defconfig: add mali gpu configuration

Change-Id: I55850586a0907f1fad5e102bdfecab74e3e9b516
Signed-off-by: Jinku Kang <jinku79.kang@samsung.com>

[9610] arch: dtsi: add mali-gpu configuration

Change-Id: I733b8b187666620bcd2f947fcb6aef031348415f
Signed-off-by: Jinku Kang <jinku79.kang@samsung.com>

[9610] gpu: add initial codes for mali r10p0, and remove unused codes

Change-Id: I2ba9eba4d9977c40a7f2da0f7c64357cd4ad1ca4
Signed-off-by: Jinku Kang <jinku79.kang@samsung.com>

[COMMON] lib: dss: change variable form enabed log count to total log count

Change-Id: Ife95505db80cac47d7852a511f8c5b71140a4b5e
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[9610][ERD] arm64: config: enable PSTORE_PMSG

Change-Id: I3c0a84a475f2d127e8c5be5dd0202cff9d1d2e31
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[COMMON] fs: pstore: introduce new method for hooking platform log with DSS

Since android M version, platform log is not dropped to kernel
space. This commit is needed to support other methods
log_main / log_radio are removed, divided space is combined
into one log called log_platform

This commit adds new method for hooking platform with using pstore.
Recently, pmsg added persistant file system to support userspace log.
Exynos-Snapshot hooks userspace log between them.

This commit adds pstore / pstore-ram / pmsg features support in
exynos-snapshot. It is available to logging kernel, ftrace data
and platform(userspace) log.
To support runtime logging(pstore-ram), platform device driver is
needed it has memory information we need

Change-Id: I45a6f61339660df755676da08cd52656b1fcc8b7
Signed-off-by: Hosung Kim <hosung0.kim@samsung.com>

[COMMON] fs: pstore: add hooking platform functions with DSS

Change-Id: Ib1b0d29001e647b86c644248eafa02e051d069da
Signed-off-by: Hosung Kim <hosung0.kim@samsung.com>

[9610][ERD] arm64: configs: merge android-recommended.cfg

Change-Id: I3b47eef62192711ad99473ceed42732b0261d279
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>

[9610][ERD] arm64: configs: merge android-base.cfg and android-base-arm64.cfg

Change-Id: I99bec9b0314691dd0e4374e7483f73d5271f7f4d
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>

[9610][ERD] arm64: config: run savedefconfig

Change-Id: I6a48e81455ecbb51067e7f3ada539329cb211e3c
Signed-off-by: Youngmin Nam <youngmin.nam@samsung.com>

[9610] fbdev: dpu: exynos folder build script is added

Change-Id: I651a6c3ac696edc33fbe6694efbd97c3dfdccaca
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[HACK] fbdev: dpu: PM_QOS definition is removed for compile

PM_QOS_BUS_THROUGHPUT,
PM_QOS_DEVICE_THROUGHPUT,
PM_QOS_DISPLAY_THROUGHPUT is not yet defiend.

Change-Id: Ie768c68dcf53fa25f8c893b197f5e550649d0dc9
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[9610] configs: DPU drvier config is enabled

Change-Id: I04f8690d44fe5e2a21b25dac56a254ee5e6a5922
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[9610] arm64: dts: display dts configure is added

Change-Id: I9db9ae2e99200cac1e89233371dd6f2b59c4565e
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[9610] fbdev: dpu: PHY configure is changed by Exynos9610

1. PHY timing value is changed
2. PHY setting function is changed

Change-Id: Ied96bf2196ec73d687162fd58ac87dfcbaad7e1e
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[9610] fbdev: dpu: DPP configure is modified to Exynos9610 spec

1. IDMA Number, SFR address, SFR setting value is changed.
2. Base address setting function is changed.
3. DECON sram share size is changed.

Change-Id: I430a908233b880c4d9b057cdd34de51b541db8d8
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[9610] fbdev: dpu: panels: 3fa0 panel file is added

Change-Id: I4f700695031d126220c4e0eea7531e84ba240bdf
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[9610] fbdev: dpu: bts.c code is changed

DPU2, DPP4, DPP5 is removed.

Change-Id: I1daff85abf4b32e36d1cb80c744700b8d5eeb7b8
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[9610] fbdev: dpu: DPU2.0 driver is added

Change-Id: I4e1dbb842bc57f704ef90885af7b4d89307e1062
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[9610] include: video: DSC related definitions is added

Change-Id: I7377aa2ddaee35e0fa13334b29fe12f52db17d1f
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[9610] include: linux: videodev2_exynos_media.h file is added

Change-Id: Id4c02c2fcbc5c554d3b2bf44677bee7baf9bc2ca
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[9610] phy: samsung: add exynos8895 mipi phy driver for exynos9610

Change-Id: I6bf30a8a38e5c06b9539f9f083b7adcb4e3952b4
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>

[9610][ERD] arm64: config: Enable CONFIG_SECCOMP config

Change-Id: Iebcc85abd729a5c5b70da8695def4da83adec954
Signed-off-by: Jaehyoung Choi <jkkkkk.choi@samsung.com>

Revert "[HACK] [9610] driver: turn on charger always if notifier is not enabled"

This reverts commit 85f6fd13cf1adaa9420104d6ec297ed9a9499f5c.

Change-Id: I3f6edc0ad855a08c9bdd9d9c14b0c0f4814c661a
Signed-off-by: Keunho Hwang <keunho.hwang@samsung.com>

[9610][ERD] arm64: config: Enable synaptics touch driver

Change-Id: Ib3c0d84aa12cea9683669f2cc87b852d08312706
Signed-off-by: Jaehyoung Choi <jkkkkk.choi@samsung.com>

[9610][ERD] arm64: dts: Add synaptics touch device node

Change-Id: Id99f34ce20df90a5eb0dc63e939b01b17e32ea59
Signed-off-by: Jaehyoung Choi <jkkkkk.choi@samsung.com>

[COMMON] touchscreen: synaptics: Remove stop touch screen code in probe

Change-Id: I1d830cac9012dfd710f97121fcb10b6c13a4807c
Signed-off-by: Jaehyoung Choi <jkkkkk.choi@samsung.com>

[COMMON] touchscreen: synaptics: Add avdd regulator

Change-Id: I586e16dc177d75ae90010767924095f5c2257f36
Signed-off-by: Jaehyoung Choi <jkkkkk.choi@samsung.com>

[COMMON] touchscreen: synaptics: Add synaptics touch screen code

Change-Id: I1b8d96fb7513ba7c089a05fdeeb986b2dbd757f9
Signed-off-by: Jaehyoung Choi <jkkkkk.choi@samsung.com>

[9610][ERD] arm64: dts: fix chipid entry

Change-Id: I35fcd373fc8255cfe490187ceff8d8fdc96df4d3
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[COMMON] drivers: soc: modify chipid definition

Change-Id: Ia4379d6c91e6197f80c8e525e1f6d4deef901393
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

Revert "[HACK] disalbe chip-id driver function"

This reverts commit 5319ec7d40f941588c8f7046d2a033349502c464.

Change-Id: I933e658ab4d386d84066e962ddedb0ac2dbbc86d
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[9610][ERD] arm64: defconfig: enable EXYNOS_REBOOT

Change-Id: I44757e451bc31fb8f005044595ea519be5f87a9b
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[9610][ERD] arm64: dts: add exynos-reboot dt-entry

Change-Id: I674952fdd9e7ab81f6d94a08dc0c9a3f773dfbdd
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[9610][ERD] samsung: exynos-reboot: introduce exynos-reboot

Change-Id: I3ae59ea7656948a3c3d6b54ac3a8fcac3aa9a4b4
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[9610][ERD] arm64: defconfig: enable Debug SnapShot(DSS)

Change-Id: I93ec61f588ad93f7e272af46039692f350921d1c
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[9610][ERD] arm64: defconfig: enable CONFIG_PRINTK_PROCESS

Change-Id: I84f00683730ce2dd7d20dd0b0f780cd0dcae33b2
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[HACK] lib: dss: skip cache flush all

Change-Id: I7502f4f6097fa3bfe73efb35ca260d6719b0da4e
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[9610][ERD] arm64: dts: add dtsi for debug feature

Change-Id: I4fb9f7716549289b19e69d538f1dc27515c32a3b
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[COMMON] arm64: traps: add entry/exit point for lockup detector

Change-Id: I715f286fa249f98c1d698b8187443ea7627b173a
Signed-off-by: Hosung Kim <hosung0.kim@samsung.com>

[COMMON] kernel: panic: Remove show regs when WARNING

Change-Id: I9b77a64da8731253c56c083190d8a1cfe3685bd1
Signed-off-by: Changki Kim <changki.kim@samsung.com>

[COMMON] kernel: panic: add soc_early_panic function in panic

Change-Id: I3cedf5f3a88e2b1f73540db0d1085ae2b636007d
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[COMMON] panic: NOT allowed re-entrance by same cpu

if panic and then panic again on the same cpu, it is allowed
re-entrance. In that situation, it is likely to happen panic
again again. So this patch don't allow re-entrace of same cpu
to prevent that situation.

Change-Id: I766f4f72b589be675747f66bb2ec732c07f60b81
Signed-off-by: Hosung Kim <hosung0.kim@samsung.com>

[COMMON] lib: dss: add to support Debug-SnapShot(DSS)

Change-Id: I28ab91356cc2852a38ee6b7c08d1bcb837d6e8ca
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[COMMON] lib: dss: rename exynos-snapshot to debug-snapshot

Change-Id: I196cfc11cd7d24d134bfbf89d5dec27c5450a22f
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

[COMMON] printk: add hooking function for exynos-snapshot

This commit adds hooking function for gathering kernel log
in exynos-snapshot.

Change-Id: I4132288aec8664861f2b51873feb52d8a7da981b
Signed-off-by: Hosung Kim <hosung0.kim@samsung.com>

[COMMON] printk: add supporting core number and process information

This commit adds supporting to output the core number and process
information. They are depending on as following configuration.
- CONFIG_PRINTK_PROCESS

Change-Id: I09698dc00e5acd1bb11b9a564fdc3f129c04b642
Signed-off-by: Hosung Kim <hosung0.kim@samsung.com>
Signed-off-by: Hyunki Koo <hyunki00.koo@samsung.com>

[9610][ERD] arm64: created dt node and added configs for S2MPB02

Change-Id: Id07066b8d4e5279f7a768f0099ed3137a96db83c
Signed-off-by: Jieun Yi <jieun.yi@samsung.com>

[9610][ERD] drivers: leds: created led driver for S2MPB02

Change-Id: Ifbadf66539f5fb58734d4d9bf7dee37b083ff745
Signed-off-by: Jieun Yi <jieun.yi@samsung.com>

[9610][ERD] drivers: regulator: created regulator driver for S2MPB02

Change-Id: If727403c00e0f791aa683017abb8a47fbc18376e
Signed-off-by: Jieun Yi <jieun.yi@samsung.com>

[9610][ERD] drivers: mfd: created mfd driver for S2MPB02

Change-Id: I718feaf8c5b5a41ee9e2cb3056ce394c9afd88f2
Signed-off-by: Jieun Yi <jieun.yi@samsung.com>

android: ion: confirm to unmap invalid secure iova

Change-Id: Ifc926d9f85bed09c7c953fd4126f8a22e9c16e76
Signed-off-by: hyesoo.yu <hyesoo.yu@samsung.com>

android: ion: fix missing dma address assignment

Change-Id: I1653dd69e383d559cf3c0f1cb323d3e5640782c8
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

android: ion: fix incorrect protection by HPA heap

<3>[   14.274076]  [4:HwBinder:2696_2: 2720] ion_secure_iova_alloc: failed alloc secure iova. 1610612736/1610612736 bytes used
<3>[   14.274091]  [4:HwBinder:2696_2: 2720] ion_secure_protect: PROT:-2113920752 (err=0,va=0x0,len=0x80000000,cnt=65536,flg=2)

It is caused by incorrect protection information from HPA heap:
- buffer count <-> buffer length in bytes
- chunk size <-> buffer count

Change-Id: I42cb1b31535c698d5ec063d0229a213913d863b4
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

android: ion: fix showing incorrect value type

Error message when buffer protection is failed is misleading.

Change-Id: I399ebf66afb86e393e65903a11353775d4a37312
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

android: ion: fix success on protection failure

Change-Id: I26a3055cbd6b20bac7cee26992ce7d308993f614
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

android: ion: fix build break with secure DRM on

Change-Id: I56841d7748b8ae1d546425b0fcbf70b83d443fda
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

android: ion: assign ion_device for oom notifier

ion_device should be assigned before registering oom notifier.

Change-Id: I14b0af58533591f0d01037607ab2e9f047034c41
Signed-off-by: Janghyuck Kim <janghyuck.kim@samsung.com>

arm64: erd9610_defconfig: enable HPA

Change-Id: I322854cd634e48be078a22f2f37ec7199ec5104a
Signed-off-by: hyesoo.yu <hyesoo.yu@samsung.com>

android: ion: show the list of buffers for debug

debugfs/ion/buffers shows the list of buffers and the page pools of
ion_system_heap.
Also added an oom notifier to show the list of buffers when OOM Killer
is invoked. It is very useful to see if the OOM is caused by too many
ION buffers.

Change-Id: I1784014099844917ad15901909a9c2c87e23f32f
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

android: ion: add buffer protection to HPA heap

Change-Id: I922780c3378a0e9d6e152ba1a41cc7aaa5cae0f2
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

android: ion: add HPA heap

Introducing HPA heap backed by High-order Pages Allocator which
guarantees allocation of higher order pages than PAGE_SIZE.

Change-Id: I1ff9c5727509e9e8cdec00469c704d489614bdf2
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

mm/hpa: fix dependency to lowmemorykiller

lowmemorykiller is removed from the tree by the following commit:
915e70f ("staging, android: remove lowmemory killer from the tree")

Instead HPA killer borrows victim selection logic from oom_killer.
oom_killer selectes a victim task with the combination of the total
rss of the task and oom_adj_score. But HPA killer selects the task
with the largest rss among the tasks with the same oom_adj_score that
is also the largest to select a task with less panelty.

Change-Id: I0ef31e5c44faad9c6216dbdbd085082167b3f256
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

[COMMON] mm/hpa: remove test condition that always true

Coverity CID197219

Change-Id: I6afd75fdaf705dbfa4c905bb8e0c859bd77999de
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

[COMMON] mm: hpa: reclaim non-lru movable pages in HPA

The patch series of "Support non-lru page migration"
(https://lwn.net/Articles/689343/) introduced the way of migrating
movable pages which are not in LRU list by providing callback
functions called on migration. With that patch series, zsmalloc()
starts allocating pages from Movable zone even though it it is not LRU
pages. Therefore HPA should check if a page is non-lru movable.
Otherwise, HPA may suffer from lack of pages to migrate to other
zones.

Change-Id: Iaa35d16e6b5af21a1eb30c518e371e28995d0d8a
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

[COMMON] mm: hpa: fix parameter that hides global identifier

The first parameter to is_movable_chunk() is start_pfn that is
declared as a global variable with the file scope. It is not harm
even though the parameter hids the global variable but it causes
the readers confusing so that it likely leads a mistake in the change
of some statements in the function.
Therefore the name of the first parameter to is_movable_chunk() is
changed and modified the logic of the body of is_movable_chunk() for
clear understanding.

Change-Id: I7b97aefb0b25dd09ca6c22fe0077b3d76b372210
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

[COMMON] mm: hpa: fix using invalid array index

Change-Id: I433e9f33ae3931319b52cb977bbf178a74287fe4
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

[COMMON] mm: hpa/cma: introduce alloc_contig_range_fast()

HPA allocates lots of order-4 pages from alloc_contig_range(). But it
consumes the most of time to flush per-cpu LRU and per-cpu free pages
that is not required for HPA.
alloc_contig_range_fast() does not flush the per-cpu pages. Therefore
it may fail to reclaim the given range of pages. The users that need
guarantee of success of reclamation of the given range of pages, they
can call alloc_contig_range() as they did. Its behavior is unchanged.

Change-Id: Ie9d545132c7450713ff7724099d24a2ffd766cb1
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

[COMMON] mm: hpa: avoid selecting a victim that was a victim

Totally the same logic with the following patch:
0f7b387 [COMMON] lowmemorykiller: when killing timeout, choose other process

HPA eventually invokes its internal task killer, HPA Killer that
selects a victim task with the highest oom_adj and the largest rss. It
signals SIGKILL the victim task and expects the victim task to be soon
died.
HPA Killer skips selecting another task on the next invocation until
the victim task is finally died during a second unless it finds
another victim task that is more proper to kill. If the task is not
died in a second, HPA killer is to select the same task as a victim
because of the victim selection logic.
If the victim task is in disk sleep state and it waits for a resource
that is occupied by the task that invoking HPA Killer, HPA Killer will
be never finished until another larger task with higher oom_adj is
appeared.
To end ths dead-lock condition, HPA Killer should select next proper
victim task even though the current victim task is not died.

Change-Id: I73afdce457976c9a8f60e92d8d96e792ea854c7c
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

[COMMON] mm: hpa: prevent allocating cma pages from HPA

HPA turns movable pages into the unmovable for playing DRM contents.
But CMA pages should be always ready for reclamation. Therefore, they
should not be unmovable at all time.

Change-Id: I4dbdd7bc065c1c40f7c6bd80fa55c49a46711482
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>

[COMMON] mm: hpa: initialize local variable

Fix Svace: 64228

Change-Id: Ic29475767bd4cbd8043677abf435c4ab478dd2b7
Signed-off-by: Sunyoung Kang <sy0816.kang@samsung.com>