Commit Graph

976 Commits

Author SHA1 Message Date
Huang, Tao
234718be61 Merge tag 'lsk-v4.4-16.06-android'
LSK 16.06 v4.4-android

* tag 'lsk-v4.4-16.06-android': (447 commits)
  Linux 4.4.14
  netfilter: x_tables: introduce and use xt_copy_counters_from_user
  netfilter: x_tables: do compat validation via translate_table
  netfilter: x_tables: xt_compat_match_from_user doesn't need a retval
  netfilter: ip6_tables: simplify translate_compat_table args
  netfilter: ip_tables: simplify translate_compat_table args
  netfilter: arp_tables: simplify translate_compat_table args
  netfilter: x_tables: don't reject valid target size on some architectures
  netfilter: x_tables: validate all offsets and sizes in a rule
  netfilter: x_tables: check for bogus target offset
  netfilter: x_tables: check standard target size too
  netfilter: x_tables: add compat version of xt_check_entry_offsets
  netfilter: x_tables: assert minimum target size
  netfilter: x_tables: kill check_entry helper
  netfilter: x_tables: add and use xt_check_entry_offsets
  netfilter: x_tables: validate targets of jumps
  netfilter: x_tables: don't move to non-existent next rule
  drm/core: Do not preserve framebuffer on rmfb, v4.
  crypto: qat - fix adf_ctl_drv.c:undefined reference to adf_init_pf_wq
  netfilter: x_tables: fix unconditional helper
  ...
2016-07-05 18:36:47 +08:00
Huibin Hong
7b42693fe1 fiq_debugger: fix code error in fiq_debugger_arm64.c
Change-Id: I6163602bf0190db85714c68086f61c89b7629687
Signed-off-by: Huibin Hong <huibin.hong@rock-chips.com>
2016-06-21 17:40:31 +08:00
Dmitry Shmidt
f73ca028a0 fiq_debugger: Add fiq_debugger.disable option
This change allows to use same kernel image with
different console options for uart and fiq_debugger.
If fiq_debugger.disable will be set to 1/y/Y,
fiq_debugger will not be initialized.

Change-Id: I71fda54f5f863d13b1437b1f909e52dd375d002d
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2016-05-19 12:35:13 +05:30
Dmitry Shmidt
ad8a69c919 fiq_debugger: Add option to apply uart overlay by FIQ_DEBUGGER_UART_OVERLAY
fiq_debugger is taking over uart, so it is necessary to disable
original uart in DT file. It can be done manually or by overlay.

Change-Id: I9f50ec15b0e22e602d73b9f745fc8666f8925d09
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2016-05-19 12:35:13 +05:30
Huang, Tao
f0161aad47 Merge branch 'linux-linaro-lsk-v4.4-android' of git://git.linaro.org/kernel/linux-linaro-stable.git
* linux-linaro-lsk-v4.4-android: (797 commits)
  parisc: Use generic extable search and sort routines
  arm64: kasan: Use actual memory node when populating the kernel image shadow
  arm64: mm: treat memstart_addr as a signed quantity
  arm64: lse: deal with clobbered IP registers after branch via PLT
  arm64: mm: check at build time that PAGE_OFFSET divides the VA space evenly
  arm64: kasan: Fix zero shadow mapping overriding kernel image shadow
  arm64: consistently use p?d_set_huge
  arm64: fix KASLR boot-time I-cache maintenance
  arm64: hugetlb: partial revert of 66b3923a1a
  arm64: make irq_stack_ptr more robust
  arm64: efi: invoke EFI_RNG_PROTOCOL to supply KASLR randomness
  efi: stub: use high allocation for converted command line
  efi: stub: add implementation of efi_random_alloc()
  efi: stub: implement efi_get_random_bytes() based on EFI_RNG_PROTOCOL
  arm64: kaslr: randomize the linear region
  arm64: add support for kernel ASLR
  arm64: add support for building vmlinux as a relocatable PIE binary
  arm64: switch to relative exception tables
  extable: add support for relative extables to search and sort routines
  scripts/sortextable: add support for ET_DYN binaries
  ...

Conflicts:
	arch/arm64/mm/dma-mapping.c
	drivers/clk/rockchip/clk-rk3368.c
	drivers/mmc/core/core.c
	drivers/mmc/core/sdio.c
	include/linux/dcache.h

Change-Id: Ibaa1e90ac735db8d9f5e542c266ef27b91616ef4
2016-05-13 12:20:56 +08:00
Alex Shi
bab1564182 Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Conflicts:
	d_canonical_path in include/linux/dcache.h
2016-04-21 14:08:44 +08:00
Liviu Dudau
440e9a240c staging: android: ion: Set the length of the DMA sg entries in buffer
commit 70bc916b2c upstream.

ion_buffer_create() will allocate a buffer and then create a DMA
mapping for it, but it forgot to set the length of the page entries.

Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Acked-by: Laura Abbott <labbott@redhat.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-04-20 15:42:16 +09:00
Alex Shi
08562bfcb8 Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android 2016-04-13 12:02:21 +08:00
Vladimir Zapolskiy
263b0af7cc staging: android: ion_test: fix check of platform_device_register_simple() error code
commit ccbc2a9e78 upstream.

On error platform_device_register_simple() returns ERR_PTR() value,
check for NULL always fails. The change corrects the check itself and
propagates the returned error upwards.

Fixes: 81fb0b9013 ("staging: android: ion_test: unregister the platform device")
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-04-12 09:08:48 -07:00
Brian Norris
2e9117dd33 ANDROID: lowmemorykiller: fix declaration order warnings
drivers/staging/android/lowmemorykiller.c: In function ‘lowmem_scan’:
drivers/staging/android/lowmemorykiller.c:174:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]

Change-Id: I9de6cf2c374bc43131725a7ed666a033a4449ea9
Signed-off-by: Brian Norris <briannorris@google.com>
2016-04-07 16:49:55 +05:30
CMY
1dea5fb1c2 lowmemorykiller: calculator free pages exclude CMA's free
Change-Id: I51a08cd9c9ef8d37fd0a5f649c5d2843a8b7d9ff
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
2016-03-10 14:43:42 +08:00
Huang, Tao
5b1f5a9940 Merge branch 'android-4.4' of https://android.googlesource.com/kernel/common
* android-4.4:
  video: adf: Fix modular build
  net: ppp: Fix modular build for PPPOLAC and PPPOPNS
  net: pppolac/pppopns: Replace msg.msg_iov with iov_iter_kvec()
  ANDROID: mmc: sdio: Disable retuning in sdio_reset_comm()
  ANDROID: mmc: Move tracepoint creation and export symbols
  ANDROID: kernel/watchdog: fix unused variable warning
  ANDROID: usb: gadget: f_mtp: don't use le16 for u8 field
  ANDROID: lowmemorykiller: fix declaration order warnings
  ANDROID: net: fix 'const' warnings
  net: diag: support v4mapped sockets in inet_diag_find_one_icsk()
  net: tcp: deal with listen sockets properly in tcp_abort.
  tcp: diag: add support for request sockets to tcp_abort()
  net: diag: Support destroying TCP sockets.
  net: diag: Support SOCK_DESTROY for inet sockets.
  net: diag: Add the ability to destroy a socket.
  net: diag: split inet_diag_dump_one_icsk into two
  Revert "mmc: Extend wakelock if bus is dead"
  Revert "mmc: core: Hold a wake lock accross delayed work + mmc rescan"
  ANDROID: mmc: move to a SCHED_FIFO thread
2016-03-03 19:42:14 +08:00
Brian Norris
bc340f81f5 ANDROID: lowmemorykiller: fix declaration order warnings
drivers/staging/android/lowmemorykiller.c: In function ‘lowmem_scan’:
drivers/staging/android/lowmemorykiller.c:174:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]

Change-Id: I9de6cf2c374bc43131725a7ed666a033a4449ea9
Signed-off-by: Brian Norris <briannorris@google.com>
2016-03-01 11:59:39 -08:00
Huang, Tao
5f478558d4 Merge branch 'android-4.4'
* android-4.4: (475 commits)
  android: base-cfg: Add CONFIG_IP_MULTICAST
  android: recommended.cfg: enable taskstats
  ANDROID: android: base-cfg: disable CONFIG_SYSVIPC
  android: configs: base: enable configfs gadget functions
  android: add CONFIG_DEBUG_RODATA to recommended config
  android: configs: remove CONFIG_BATTERY_ANDROID=y
  android: configs: base: enable IPV6
  android: configs: Enable SELinux and its dependencies.
  android: base-cfg: disable ALARM_DEV
  android: base-cfg: turn off /dev/mem and /dev/kmem
  android: base-cfg: enable ARMV8_DEPRECATED and subfeatures
  android: base-cfg: enforce the needed XFRM_MODE_TUNNEL (for VPN)
  android: base-cfg: disable LOGGER
  android: base-cfg: enable DM_VERITY (used for secureboot)
  android: configs: add systrace support to recommended configs
  android: configs: update 3.10 options
  android: configs: Add CONFIG_NETFILTER_XT_TARGET_IDLETIMER
  android: configs: add IPV6 ROUTE INFO
  android: configs: add TIMER_STATS back, helps with sysrq t.
  android: configs: Add HIDRAW to recommended set
  ...

Change-Id: I4580a461d0e2845c6aa430861174c83bb6120bb4
2016-02-18 15:18:27 +08:00
Amit Pundir
e9db98677f ion: fix page pool cache policy
Fix redundant "buffer->private_flags & ION_PRIV_FLAG_SHRINKER_FREE"
checks in if(!cached ...) condition block.

AOSP Change-Id: I98ee8902df0c80135dddfa998c4ca4c2bb44e40e,
"ion: Handle the memory mapping correctly on x86", is broken
on android-3.18+ kernels. It conflicts with upstream commit
53a91c68fa, "staging: ion: Add private buffer flag to skip
page pooling on free", and break the ION_PRIV_FLAG_SHRINKER_FREE
private flag check logic.

Change-Id: I9cee4bcc3545cf92e07c21c2b42d27cf88da3316
Reported-by: chenfeng <puck.chen@hisilicon.com>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
2016-02-16 13:53:59 -08:00
Daniel Rosenberg
2bdbab4767 staging: ion: Add X86 dependency for ION_POOL_CACHE_POLICY
ION_POOL_CACHE_POLICY uses x86 specific commands.
Only allow it to be used for x86.

Signed-off-by: Daniel Rosenberg <drosen@google.com>
Change-Id: Ic66e175fa41486b0b5f77872f2193add77cbe66f
(cherry picked from commit 43f4056cbec017c4414d74b032e9c14e009eabb0)
2016-02-16 13:53:58 -08:00
Vinil Cheeramvelil
3607f99181 ion: Handle the memory mapping correctly on x86
This patch modifies the ion page pool code to address
limitation in x86 PAT. When one physical page is mapped
to multiple virtual pages, the same cache policy
should be used. Add set_memory_wc/uc call to avoid aliases.
If not, all mappings will be cached(write back).

Change-Id: I98ee8902df0c80135dddfa998c4ca4c2bb44e40e
Signed-off-by: Zhebin Jin <zhebin.jin@intel.com>
Signed-off-by: Vinil Cheeramvelil <vinil.cheeramvelil@intel.com>
2016-02-16 13:53:58 -08:00
Rajmal Menariya
cb40c4a265 ion : In carveout heap, change minimum allocation order from 12 to PAGE_SHIFT, After this change each bit in bitmap (genalloc - General purpose special memory pool)
represents one page size memory.

Cc:sprd-ind-kernel-group@googlegroups.com
Cc:sanjeev.yadav@spreadtrum.com
Cc:Colin Cross <ccross@android.com>
cc:John Stultz <john.stultz@linaro.org>

Change-Id: I1172285dac014ecd2f1a965604b697d6739c1726
Signed-off-by: Rajmal Menariya <rajmal.menariya@spreadtrum.com>
2016-02-16 13:53:57 -08:00
Andrew Bresticker
46dfd401fb CHROMIUM: android: Unconditionally remove callbacks in sync_fence_free()
Using fence->status to determine whether or not there are callbacks
remaining on the sync_fence is racy since fence->status may have been
decremented to 0 on another CPU before fence_check_cb_func() has
completed.  By unconditionally calling fence_remove_callback() for each
fence in the sync_fence, we guarantee that each callback has either
completed (since fence_remove_callback() grabs the fence lock) or been
removed.

BUG=chrome-os-partner:46382
TEST=Reboot cycle test on Smaug; no crashes seen.

Change-Id: I837180ef633aed3c5ae1e52e0d6ded838342b8fa
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/305331
Reviewed-by: Puneet Kumar <puneetster@chromium.org>
2016-02-16 13:53:26 -08:00
Dmitry Torokhov
41576bbd66 CHROMIUM: android: fix warning when releasing active sync point
Userspace can close the sync device while there are still active fence
points, in which case kernel produces the following warning:

[   43.853176] ------------[ cut here ]------------
[   43.857834] WARNING: CPU: 0 PID: 892 at /mnt/host/source/src/third_party/kernel/v3.18/drivers/staging/android/sync.c:439 android_fence_release+0x88/0x104()
[   43.871741] CPU: 0 PID: 892 Comm: Binder_5 Tainted: G     U 3.18.0-07661-g0550ce9 #1
[   43.880176] Hardware name: Google Tegra210 Smaug Rev 1+ (DT)
[   43.885834] Call trace:
[   43.888294] [<ffffffc000207464>] dump_backtrace+0x0/0x10c
[   43.893697] [<ffffffc000207580>] show_stack+0x10/0x1c
[   43.898756] [<ffffffc000ab1258>] dump_stack+0x74/0xb8
[   43.903814] [<ffffffc00021d414>] warn_slowpath_common+0x84/0xb0
[   43.909736] [<ffffffc00021d530>] warn_slowpath_null+0x14/0x20
[   43.915482] [<ffffffc00088aefc>] android_fence_release+0x84/0x104
[   43.921582] [<ffffffc000671cc4>] fence_release+0x104/0x134
[   43.927066] [<ffffffc00088b0cc>] sync_fence_free+0x74/0x9c
[   43.932552] [<ffffffc00088b128>] sync_fence_release+0x34/0x48
[   43.938304] [<ffffffc000317bbc>] __fput+0x100/0x1b8
[   43.943185] [<ffffffc000317cc8>] ____fput+0x8/0x14
[   43.947982] [<ffffffc000237f38>] task_work_run+0xb0/0xe4
[   43.953297] [<ffffffc000207074>] do_notify_resume+0x44/0x5c
[   43.958867] ---[ end trace 5a2aa4027cc5d171 ]---

Let's fix it by introducing a new optional callback (disable_signaling)
to fence operations so that drivers can do proper clean ups when we
remove last callback for given fence.

BUG=chrome-os-partner:40303
TEST=Boot Smaug and observe that warning is gone.

Change-Id: I05c34dcf74438c28405438c7ead0706b1f810fff
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/303409
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
2016-02-16 13:53:25 -08:00
John Stultz
e4123d4ac6 fiq_debugger: Build fixes for 4.1
Small build updates for 4.1

Signed-off-by: John Stultz <john.stultz@linaro.org>
2016-02-16 13:52:30 -08:00
Arve Hjønnevåg
8591e0429e fiq_debugger: Add fiq_watchdog_triggered api
Dumps registers and stacktrace into console-ramoops when called
from a watchdog fiq.

Change-Id: Ib6fab5a52f670db18e64214d5e4890e8292a749c
Signed-off-by: Arve Hjønnevåg <arve@android.com>
2016-02-16 13:52:29 -08:00
Arve Hjønnevåg
592a91a756 fiq_debugger: Call fiq_debugger_printf through a function pointer from cpu specific code
This allows the output from the register and stack trace code to be
sent elsewhere.

Change-Id: I41bb0d5a25e1b9ca55feef5dbd675818b2f832d5
Signed-off-by: Arve Hjønnevåg <arve@android.com>
2016-02-16 13:52:29 -08:00
Colin Cross
0fe3a992c3 fiq_debugger: add ARM64 support
Add fiq_debugger_arm64.c that implements the platform-specific
functions.

Change-Id: I4d8b96777bb8503a93d4eb47bbde8e018740a5bf
Signed-off-by: Colin Cross <ccross@android.com>
2016-02-16 13:52:28 -08:00
Colin Cross
6f7487e127 fiq_debugger: split arm support into fiq_debugger_arm.c
Split arm support into a separate .c file that is only built for
CONFIG_ARM.

Change-Id: Iba16f4d51608bf9c3e5c8acefefcd38fead9797c
Signed-off-by: Colin Cross <ccross@android.com>
2016-02-16 13:52:28 -08:00
Colin Cross
a5c052a3e4 fiq_debugger: use pt_regs for registers
IRQ mode already passes in a struct pt_regs from get_irq_regs().
FIQ mode passes in something similar but not identical to a
struct pt_regs - FIQ mode stores the spsr of the interrupted mode
in slot 17, while pt_regs expects orig_r0.

Replace the existing mixture of void *regs, unsigned *regs, and
struct pt_regs * const with const struct pt_regs *.  Modify
dump_regs not to print the spsr since it won't be there in a
struct pt_regs anyways.  Modify dump_allregs to highlight the
mode that was interrupted, making spsr easy to find there.

Change-Id: Ibfe1723d702306c7605fd071737d7be9ee9d8c12
Signed-off-by: Colin Cross <ccross@android.com>
2016-02-16 13:52:28 -08:00
Colin Cross
10ea8c38eb fiq_debugger: allow compiling without CONFIG_FIQ_GLUE
Allow compiling fiq_debugger.c without CONFIG_FIQ_GLUE for
platforms that don't support FIQs.

Change-Id: Iabdfd790d24fa9d47b29d2f850c567af2dcad78f
Signed-off-by: Colin Cross <ccross@android.com>
2016-02-16 13:52:27 -08:00
Colin Cross
cfbb5d4264 fiq_debugger: rename debug->fiq_debugger
Rename variables and functions in the global namespace to avoid
future collisions.

Change-Id: Ic23a304b0f794efc94cc6d086fddd63231d99c98
Signed-off-by: Colin Cross <ccross@android.com>
2016-02-16 13:52:27 -08:00
Colin Cross
4ef006294a fiq_debugger: move into drivers/staging/android/fiq_debugger/
Move fiq_debugger into drivers/staging/android/fiq_debugger/ to
allow for sharing between ARM and ARM64.

Change-Id: I6ca5e8b7e3d000f57da3234260261c5592cef2a8
Signed-off-by: Colin Cross <ccross@android.com>
2016-02-16 13:52:26 -08:00
Amit Pundir
fdaa05e593 lowmemorykiller: use module_param_cb instead of __module_param_call
Use module_param_cb helper routine instead of
__module_param_call otherwise we run into following
build error:

  CC      drivers/staging/android/lowmemorykiller.o
drivers/staging/android/lowmemorykiller.c:293:28: error: macro "__module_param_call" requires 7 arguments, but only 6 given
       S_IRUGO | S_IWUSR, -1);
                            ^
drivers/staging/android/lowmemorykiller.c:290:1: warning: data definition has no type or storage class [enabled by default]
 __module_param_call(MODULE_PARAM_PREFIX, adj,
 ^
drivers/staging/android/lowmemorykiller.c:290:1: error: type defaults to ‘int’ in declaration of ‘__module_param_call’ [-Werror=implicit-int]
drivers/staging/android/lowmemorykiller.c:273:32: warning: ‘lowmem_adj_array_ops’ defined but not used [-Wunused-variable]
 static struct kernel_param_ops lowmem_adj_array_ops = {
                                ^
cc1: some warnings being treated as errors
make[3]: *** [drivers/staging/android/lowmemorykiller.o] Error 1

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
2016-02-16 13:41:36 -08:00
Martijn Coenen
29d59f1152 lowmemorykiller: trace kill events.
Allows for capturing lmk kill events and
their rationale.

Change-Id: Ibe215db5bb9806fc550c72c0b9832c85cbd56bf6
Signed-off-by: Martijn Coenen <maco@google.com>
2016-02-16 13:41:36 -08:00
Colin Cross
758a1cb1f6 lowmemorykiller: make default lowmemorykiller debug message useful
lowmemorykiller debug messages are inscrutable and mostly useful
for debugging the lowmemorykiller, not explaining why a process
was killed.  Make the messages more useful by prefixing them
with "lowmemorykiller: " and explaining in more readable terms
what was killed, who it was killed for, and why it was killed.

The messages now look like:
[   76.997631] lowmemorykiller: Killing 'droid.gallery3d' (2172), adj 1000,
[   76.997635]    to free 27436kB on behalf of 'kswapd0' (29) because
[   76.997638]    cache 122624kB is below limit 122880kB for oom_score_adj 1000
[   76.997641]    Free memory is -53356kB above reserved

A negative number for free memory above reserved means some of the
reserved memory has been used and is being regenerated by kswapd,
which is likely what called the shrinkers.

Change-Id: I1fe983381e73e124b90aa5d91cb66e55eaca390f
Signed-off-by: Colin Cross <ccross@android.com>
2016-02-16 13:41:35 -08:00
Arve Hjønnevåg
59719f7ffb staging: android: lowmemorykiller: Add config option to support oom_adj values
The conversion to use oom_score_adj instead of the deprecated oom_adj
values breaks existing user-space code. Add a config option to convert
oom_adj values written to oom_score_adj values if they appear to be
valid oom_adj values.

Change-Id: I68308125059b802ee2991feefb07e9703bc48549
Signed-off-by: Arve Hjønnevåg <arve@android.com>
2016-02-16 13:41:34 -08:00
Xu Jianqun
9da1bda27c staging: ion: cma heap support map/unmap iommu
Add apis for cma-heap to map/unmap iommu.

Change-Id: I993d54285691e7015ffa302a4bb776234ca45bcb
Signed-off-by: Xu Jianqun <jay.xu@rock-chips.com>
2016-01-25 18:46:27 +08:00
Xu Jianqun
8baee85773 staging: ion: rockchip: support cma-heap
With this patch, ion could alloc by cma heap.

Change-Id: I23b4ebf3b6f8de573c9833574f926f38db1c67bc
Signed-off-by: Xu Jianqun <jay.xu@rock-chips.com>
2016-01-21 14:47:27 +08:00
Tobias Lindskog
9cba14efb8 Shrink ashmem directly through shmem_fallocate
When ashmem_shrink is called from direct reclaim on a user thread, a
call to do_fallocate will check for permissions against the security
policy of that user thread.  It can thus fail by chance if called on a
thread that isn't permitted to modify the relevant ashmem areas.

Because we know that we have a shmem file underneath, call the shmem
implementation of fallocate directly instead of going through the
user-space interface for fallocate.

FIX=DMS06243560
Area: Kernel/Linux Kernel

Bug: 21951515
Change-Id: Ie98fff18a2bdeb535cd24d4fbdd13677e12681a7
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
2016-01-11 09:48:50 +05:30
Rom Lemarchand
bedf47303d staging: android: ashmem: add missing include
Include <linux/types.h> into ashmem.h to ensure referenced types are defined

Signed-off-by: Rom Lemarchand <romlem@android.com>
Change-Id: Iac18ed86dd47296d02a269607b1514724aaa9958
(cherry picked from commit 0d7c7ba9f6)
2016-01-11 09:48:49 +05:30
Laura Abbott
c99ba6d0dc staging: android: ashmem: Avoid deadlock with mmap/shrink
Both ashmem_mmap and ashmem_shrink take the ashmem_lock. It may
be possible for ashmem_mmap to invoke ashmem_shrink:

-000|mutex_lock(lock = 0x0)
-001|ashmem_shrink(?, sc = 0x0) <--- try to take ashmem_mutex again
-002|shrink_slab(shrink = 0xDA5F1CC0, nr_pages_scanned = 0, lru_pages
-002|=
-002|124)
-003|try_to_free_pages(zonelist = 0x0, ?, ?, ?)
-004|__alloc_pages_nodemask(gfp_mask = 21200, order = 1, zonelist =
-004|0xC11D0940,
-005|new_slab(s = 0xE4841E80, ?, node = -1)
-006|__slab_alloc.isra.43.constprop.50(s = 0xE4841E80, gfpflags =
-006|2148925462, ad
-007|kmem_cache_alloc(s = 0xE4841E80, gfpflags = 208)
-008|shmem_alloc_inode(?)
-009|alloc_inode(sb = 0xE480E800)
-010|new_inode_pseudo(?)
-011|new_inode(?)
-012|shmem_get_inode(sb = 0xE480E800, dir = 0x0, ?, dev = 0, flags =
-012|187)
-013|shmem_file_setup(?, ?, flags = 187)
-014|ashmem_mmap(?, vma = 0xC5D64210) <---- Acquire ashmem_mutex
-015|mmap_region(file = 0xDF8E2C00, addr = 1772974080, len = 233472,
-015|flags = 57,
-016|sys_mmap_pgoff(addr = 0, len = 230400, prot = 3, flags = 1, fd =
-016|157, pgoff
-017|ret_fast_syscall(asm)
-->|exception
-018|NUR:0x40097508(asm)
---|end of frame

Avoid this deadlock by using mutex_trylock in ashmem_shrink; if the mutex
is already held, do not attempt to shrink.

Change-Id: I222bbf55856d5849da813b730de0636c80966c8e
Reported-by: Matt Wagantall <mattw@codeaurora.org>
Reported-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
Reported-by: Osvaldo Banuelos <osvaldob@codeaurora.org>
Reported-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
2016-01-11 09:48:49 +05:30
John Stultz
ae3d36fac1 ashmem: Add shmem_set_file to mm/shmem.c
NOT FOR STAGING
This patch re-adds the original shmem_set_file to mm/shmem.c
and converts ashmem.c back to using it.

CC: Brian Swetland <swetland@google.com>
CC: Colin Cross <ccross@android.com>
CC: Arve Hjønnevåg <arve@android.com>
CC: Dima Zavin <dima@android.com>
CC: Robert Love <rlove@google.com>
CC: Greg KH <greg@kroah.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2016-01-11 09:48:49 +05:30
Xu Jianqun
dd26e2db1b staging: ion: rockchip: add rockchip ion device
Add rockchip_ion_dev for other modules to use.

Change-Id: I270705dc711b93af6be6dd593858723eb853aa95
Signed-off-by: Xu Jianqun <jay.xu@rock-chips.com>
2016-01-05 18:09:26 +08:00
Huang, Tao
44f48d3af9 Merge tag 'v4.4-rc6'
Linux 4.4-rc6
2015-12-21 14:26:23 +08:00
Dan Williams
3e6110fd54 Revert "scatterlist: use sg_phys()"
commit db0fa0cb01 "scatterlist: use sg_phys()" did replacements of
the form:

    phys_addr_t phys = page_to_phys(sg_page(s));
    phys_addr_t phys = sg_phys(s) & PAGE_MASK;

However, this breaks platforms where sizeof(phys_addr_t) >
sizeof(unsigned long).  Revert for 4.3 and 4.4 to make room for a
combined helper in 4.5.

Cc: <stable@vger.kernel.org>
Cc: Jens Axboe <axboe@fb.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Fixes: db0fa0cb01 ("scatterlist: use sg_phys()")
Suggested-by: Joerg Roedel <joro@8bytes.org>
Reported-by: Vitaly Lavrov <vel21ripn@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2015-12-15 12:54:06 -08:00
Jianqun xu
f0a6ed49af staging: ion: export ion map/ummap iommu APIs
Add these two functions to ion.h:
- ion_map_iommu
- ion_unmap_iommu

Change-Id: Ide5aec58cdf43862b1f135fd2cd224d044375793
Signed-off-by: Jianqun xu <jay.xu@rock-chips.com>
2015-12-01 14:13:45 +08:00
Jianqun xu
8f09cde6a2 staging: ion: rockchip-ion make codingstyle
Change-Id: I8f61b9af34c9acf82203dc188e8d19e09b007ad9
Signed-off-by: Jianqun xu <jay.xu@rock-chips.com>
2015-11-30 18:51:50 +08:00
Jianqun Xu
48588f1014 staging: ion: system heap support to map iommu
Add ion map/unmap iommu APIs for system heap ion.

Change-Id: I6dff7f58923934e9400b72f7c0e2e5dd42b47c9d
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
2015-11-30 17:07:34 +08:00
Jianqun Xu
a810fcbdfc staging: ion: add ion map iommu APIs
If with the defination of RK_IOMMU, rockchip-ion support
iommu APIs.

Change-Id: I2e63fb0822c0e296c88676302fa31359c6821af1
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
2015-11-30 16:54:24 +08:00
Jianqun Xu
710dd6dba3 staging: ion: make some function not static
Make these function no be static
- ion_handle_get
- ion_handle_put
- ion_handle_get_by_id

for rockchip ion driver to use.

Change-Id: Idb24f1db7d8dc5e2d36a7bbd46f54ac96b75b3e7
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
2015-11-30 14:26:07 +08:00
Jianqun Xu
9bead5592c staging: ion: add to compile rockchip ion driver
Add to compile rockchip ion driver to support rockchip ion

Change-Id: I3cb4f5a2110d6e0ec073eb6c48ee08796110188e
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
2015-11-30 13:55:37 +08:00
Jianqun Xu
de3570a39b staging: ion: rockchip: remove unused feature
Remove codes related to:
- DRM
- secure
- psci

They are only required by part of platforms.

Change-Id: Ie03d2637971cdd9fad87b3a5b473566ebc94ac80
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
2015-11-30 13:52:57 +08:00
Huang, Tao
bbf44583ac Merge branch 'torvalds/master'
Signed-off-by: Huang, Tao <huangtao@rock-chips.com>

Conflicts:
	arch/arm/include/asm/arm-cci.h
	drivers/android/binder.c
	drivers/android/binder_trace.h
	drivers/block/zram/Kconfig
	drivers/net/wireless/rockchip_wlan/esp8089/esp_premalloc/version.h
	include/kvm/arm_arch_timer.h
	include/linux/pl320-ipc.h
	include/linux/zsmalloc.h
	include/uapi/linux/android/binder.h
2015-11-11 19:52:00 +08:00