Lingfeng Yang [Thu, 9 Feb 2017 15:43:47 +0000 (07:43 -0800)]
ANDROID: goldfish_sync: 32 max cmds to save stack
We never use the 64 anyway.
Should fix compile warning.
Change-Id: I384155cc24e0a259d7d3898f310fc33154991311
Signed-off-by: Lingfeng Yang <lfy@google.com>
Dmitry Shmidt [Wed, 8 Feb 2017 21:11:26 +0000 (13:11 -0800)]
ANDROID: goldfish_sync: Fix sync_file_obj is NULL but dereferenced problem
Change-Id: I22c1e8c96a62ceaf3b0088b0b81dced6889334ab
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Dmitry Shmidt [Tue, 7 Feb 2017 19:09:30 +0000 (11:09 -0800)]
ANDROID: goldfish_sync: Isolate single module to fix compilation
ERROR: "goldfish_sync_timeline_signal_internal"
[drivers/staging/goldfish/goldfish_sync.ko] undefined!
ERROR: "goldfish_sync_timeline_create_internal"
[drivers/staging/goldfish/goldfish_sync.ko] undefined!
ERROR: "goldfish_sync_pt_create_internal"
[drivers/staging/goldfish/goldfish_sync.ko] undefined!
ERROR: "goldfish_sync_timeline_put_internal"
[drivers/staging/goldfish/goldfish_sync.ko] undefined!
Change-Id: I2a97c2a33b38ceeb696d28187539c158aa97a620
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Lingfeng Yang [Wed, 1 Feb 2017 07:28:39 +0000 (23:28 -0800)]
ANDROID: goldfish_sync: upgrade to new fence sync api
goldfish_sync requires the following modifications
to bring it up:
- Copy and integrate goldfish_sync version of
sw_sync, from out of dma-buf driver.
- Don't delete timelines by itself; rely on put
Change-Id: Ie88d506955dbf5c8532281f122471dc7b1c0bccb
Signed-off-by: Lingfeng Yang <lfy@google.com>
Lingfeng Yang [Mon, 13 Jun 2016 16:24:07 +0000 (09:24 -0700)]
ANDROID: goldfish_sync: Add goldfish sync driver
This is kernel driver for controlling the Goldfish sync
device on the host. It is used to maintain ordering
in critical OpenGL state changes while using
GPU emulation.
The guest open()'s the Goldfish sync device to create
a context for possibly maintaining sync timeline and fences.
There is a 1:1 correspondence between such sync contexts
and OpenGL contexts in the guest that need synchronization
(which in turn, is anything involving swapping buffers,
SurfaceFlinger, or Hardware Composer).
The ioctl QUEUE_WORK takes a handle to a sync object
and attempts to tell the host GPU to wait on the sync object
and deal with signaling it. It possibly outputs
a fence FD on which the Android systems that use them
(GLConsumer, SurfaceFlinger, anything employing
EGL_ANDROID_native_fence_sync) can use to wait.
Design decisions and work log:
- New approach is to have the guest issue ioctls that
trigger host wait, and then host increments timeline.
- We need the host's sync object handle and sync thread handle
as the necessary information for that.
- ioctl() from guest can work simultaneously with the
interrupt handling for commands from host.
- optimization: don't write back on timeline inc
- Change spin lock design to be much more lightweight;
do not call sw_sync functions or loop too long
anywhere.
- Send read/write commands in batches to minimize guest/host
transitions.
- robustness: BUG if we will overrun the cmd buffer.
- robustness: return fd -1 if we cannot get an unused fd.
- correctness: remove global mutex
- cleanup pass done, incl. but not limited to:
- removal of clear_upto and
- switching to devm_***
This is part of a sequential, multi-CL change:
external/qemu:
https://android-review.googlesource.com/239442 <- host-side device's
host interface
https://android-review.googlesource.com/221593
https://android-review.googlesource.com/248563
https://android-review.googlesource.com/248564
https://android-review.googlesource.com/223032
external/qemu-android:
https://android-review.googlesource.com/238790 <- host-side device
implementation
kernel/goldfish:
https://android-review.googlesource.com/232631 <- needed
https://android-review.googlesource.com/238399 <- this CL
Also squash following bug fixes from android-goldfish-3.18 branch.
b44d486 goldfish_sync: provide a signal to detect reboot
ad1f597 goldfish_sync: fix stalls by avoiding early kfree()
de208e8 [goldfish-sync] Fix possible race between kernel and user space
Change-Id: I22f8a0e824717a7e751b1b0e1b461455501502b6
Joshua Lang [Sat, 18 Jun 2016 00:30:55 +0000 (17:30 -0700)]
ANDROID: goldfish_audio: Clear audio read buffer status after each read
The buffer_status field is interrupt updated. After every read request,
the buffer_status read field should be reset so that on the next loop
iteration we don't read a stale value and read data before the
device is ready.
Signed-off-by: “Joshua Lang” <joshualang@google.com>
Change-Id: I4943d5aaada1cad9c7e59a94a87c387578dabe86
Yu Ning [Tue, 31 Mar 2015 06:41:48 +0000 (14:41 +0800)]
ANDROID: goldfish_audio: Enable ACPI-based enumeration for goldfish audio
Follow the same way in which ACPI was enabled for goldfish battery. See
commit
d3be10e for details.
Change-Id: I6ffe38ebc80fb8af8322152370b9d1fd227eaf50
Signed-off-by: Yu Ning <yu.ning@intel.com>
Christoffer Dall [Thu, 19 Jun 2014 14:24:04 +0000 (16:24 +0200)]
ANDROID: goldfishfb: Set pixclock = 0
User space Android code identifies pixclock == 0 as a sign for emulation
and will set the frame rate to 60 fps when reading this value, which is
the desired outcome.
Change-Id: I759bf518bf6683446bc786bf1be3cafa02dd8d42
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Yu Ning [Thu, 12 Feb 2015 03:44:40 +0000 (11:44 +0800)]
ANDROID: goldfishfb: Enable ACPI-based enumeration for goldfish framebuffer
Follow the same way in which ACPI was enabled for goldfish battery. See
commit
d3be10e for details.
Note that this patch also depends on commit
af33cac.
Change-Id: Ic63b6e7e0a4b9896ef9a9d0ed135a7796a4c1fdb
Signed-off-by: Yu Ning <yu.ning@intel.com>
Greg Hackmann [Mon, 28 Oct 2013 22:33:33 +0000 (15:33 -0700)]
ANDROID: goldfishfb: add devicetree bindings
Change-Id: I5f4ba861b981edf39af537001f8ac72202927031
Signed-off-by: Greg Hackmann <ghackmann@google.com>
[AmitP: Folded following android-4.9 commit changes into this patch
e4bc8c96ba03 ("ANDROID: video: goldfishfb: fix platform_no_drv_owner.cocci warnings")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Christian Poetzsch [Fri, 24 Jul 2015 15:42:58 +0000 (16:42 +0100)]
ANDROID: fs: Fix for in kernel emergency remount when loop mounts are used
adb reboot calls /proc/sysrq-trigger to force an emergency remount (ro) of all
mounted disks. This is executed in the order of the time the mount was originally
done. Because we have a test system which loop mount images from an extra
partition, we see errors cause the loop mounted partitions gets remounted after
this physical partition was set to read only already.
Fix this by reversing the order of the emergency remount. This will remount the
disk first which have been mounted last.
So instead of remounting in this order:
/dev/sda1
/dev/loop1
/dev/loop2
we now remount in this order:
/dev/loop2
/dev/loop1
/dev/sda1
Change-Id: I68fe7e16cc9400ab5278877af70c9ea1d9b57936
Signed-off-by: Christian Poetzsch <christian.potzsch@imgtec.com>
Mohan Srinivasan [Fri, 10 Feb 2017 22:26:23 +0000 (14:26 -0800)]
ANDROID: fs: Refactor FS readpage/write tracepoints.
Refactor the fs readpage/write tracepoints to move the
inode->path lookup outside the tracepoint code, and pass a pointer
to the path into the tracepoint code instead. This is necessary
because the tracepoint code runs non-preemptible. Thanks to
Trilok Soni for catching this in 4.4.
Signed-off-by: Mohan Srinivasan <srmohan@google.com>
[AmitP: Folded following android-4.9 commit changes into this patch
a5c4dbb05ab7 ("ANDROID: Replace spaces by '_' for some android filesystem tracepoints.")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Mohan Srinivasan [Thu, 15 Dec 2016 00:39:51 +0000 (16:39 -0800)]
ANDROID: fs: FS tracepoints to track IO.
Adds tracepoints in ext4/f2fs/mpage to track readpages/buffered
write()s. This allows us to track files that are being read/written
to PIDs. (Merged from android4.4-common).
Signed-off-by: Mohan Srinivasan <srmohan@google.com>
Jin Qian [Thu, 2 Mar 2017 21:32:59 +0000 (13:32 -0800)]
ANDROID: fs: sched: add a counter to track fsync
Change-Id: I6c138de5b2332eea70f57e098134d1d141247b3f
Signed-off-by: Jin Qian <jinqian@google.com>
[AmitP: Refactored changes to align with changes from upstream commit
9a07000400c8 ("sched/headers: Move CONFIG_TASK_XACCT bits from <linux/sched.h> to <linux/sched/xacct.h>")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Colin Cross [Mon, 6 May 2013 23:50:16 +0000 (23:50 +0000)]
ANDROID: fs: epoll: use freezable blocking call
Avoid waking up every thread sleeping in an epoll_wait call during
suspend and resume by calling a freezable blocking call. Previous
patches modified the freezer to avoid sending wakeups to threads
that are blocked in freezable blocking calls.
This call was selected to be converted to a freezable call because
it doesn't hold any locks or release any resources when interrupted
that might be needed by another freezing task or a kernel driver
during suspend, and is a common site where idle userspace tasks are
blocked.
Change-Id: I848d08d28c89302fd42bbbdfa76489a474ab27bf
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
JP Abgrall [Wed, 23 Jul 2014 23:55:07 +0000 (16:55 -0700)]
ANDROID: fs: ext4: Add support for FIDTRIM, a best-effort ioctl for deep discard trim
* What
This provides an interface for issuing an FITRIM which uses the
secure discard instead of just a discard.
Only the eMMC command is "secure", and not how the FS uses it:
due to the fact that the FS might reassign a region somewhere else,
the original deleted data will not be affected by the "trim" which only
handles un-used regions.
So we'll just call it "deep discard", and note that this is a
"best effort" cleanup.
* Why
Once in a while, We want to be able to cleanup most of the unused blocks
after erasing a bunch of files.
We don't want to constantly secure-discard via a mount option.
From an eMMC spec perspective, it tells the device to really get rid of
all the data for the specified blocks and not just put them back into the
pool of free ones (unlike the normal TRIM). The eMMC spec says the
secure trim handling must make sure the data (and metadata) is not available
anymore. A simple TRIM doesn't clear the data, it just puts blocks in the
free pool.
JEDEC Standard No. 84-A441
7.6.9 Secure Erase
7.6.10 Secure Trim
From an FS perspective, it is acceptable to leave some data behind.
- directory entries related to deleted files
- databases entries related to deleted files
- small-file data stored in inode extents
- blocks held by the FS waiting to be re-used (mitigated by sync).
- blocks reassigned by the FS prior to FIDTRIM.
Change-Id: I676a1404a80130d93930c84898360f2e6fb2f81e
Signed-off-by: Geremy Condra <gcondra@google.com>
Signed-off-by: JP Abgrall <jpa@google.com>
Todd Poynor [Wed, 24 Aug 2011 22:01:30 +0000 (15:01 -0700)]
ANDROID: fs: fuse: Freeze client on suspend when request sent to userspace
Suspend attempts can abort when the FUSE daemon is already frozen
and a client is waiting uninterruptibly for a response, causing
freezing of tasks to fail.
Use the freeze-friendly wait API, but disregard other signals.
Change-Id: Icefb7e4bbc718ccb76bf3c04daaa5eeea7e0e63c
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Arve Hjønnevåg [Sat, 3 May 2014 03:23:21 +0000 (20:23 -0700)]
ANDROID: fs: pstore: ram: Add ramoops_console_write_buf api
Allow writing into the ramoops console buffer.
Change-Id: Iff0d69b562e4dae33ea7f8d19412227bebb17e47
Signed-off-by: Arve Hjønnevåg <arve@android.com>
San Mehat [Sun, 22 Mar 2009 01:48:54 +0000 (18:48 -0700)]
ANDROID: fs: block_dump: Don't display inode changes if block_dump < 2
Signed-off-by: San Mehat <san@android.com>
Keun-young Park [Tue, 15 Nov 2016 02:25:15 +0000 (18:25 -0800)]
ANDROID: dm: verity: add minimum prefetch size
- For device like eMMC, it gives better performance to read more hash
blocks at a time.
- For android, set it to default 128.
For other devices, set it to 1 which is the same as now.
- saved boot-up time by 300ms in tested device
bug:
32246564
Change-Id: Ibc0401a0cddba64b862a80445844b4e595213621
Cc: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Keun-young Park <keunyoung@google.com>
Badhri Jagan Sridharan [Fri, 3 Jun 2016 20:16:59 +0000 (13:16 -0700)]
ANDROID: dm: android-verity: mark dev as rw for linear target
Mark as rw when adding as linear target to allow changes
to the underlying filesystem through adb disable verity
and adb remount.
(Cherry-picked from
https://partner-android-review.googlesource.com/#/c/613573/
79a3032bb62da65a5d724eb70c8bdc662945d475)
BUG:
28845874
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: If41e9cad8e0f054f4778c09a6e2f0cb8af6fddaf
Bowgo Tsai [Thu, 2 Mar 2017 10:54:15 +0000 (18:54 +0800)]
ANDROID: dm: android-verity: allow disable dm-verity for Treble VTS
To start Treble VTS test, a single AOSP system.img will be flashed onto
the device. The size of AOSP system.img might be different than the
system partition size on device, making locating verity metadata fail
(at the last fixed size of the partition).
This change allows disabling dm-verity on system partition when the
device is unlocked (orange device state) with invalid metadata.
BUG:
35603549
Test: boot device with a different-sized system.img, checks verity is
not enabled via:
"adb shell getprop | grep partition.system.verified"
Change-Id: Ide78dca4eefde4ab019e4b202d3f590dcb1bb506
Signed-off-by: Bowgo Tsai <bowgotsai@google.com>
Greg Hackmann [Mon, 14 Nov 2016 17:48:02 +0000 (09:48 -0800)]
ANDROID: dm: android-verity: fix table_make_digest() error handling
If table_make_digest() fails, verify_verity_signature() would try to
pass the returned ERR_PTR() to kfree().
This fixes the smatch error:
drivers/md/dm-android-verity.c:601 verify_verity_signature() error: 'pks' dereferencing possible ERR_PTR()
Change-Id: I9b9b7764b538cb4a5f94337660e9b0f149b139be
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Badhri Jagan Sridharan [Fri, 13 Jan 2017 19:05:00 +0000 (11:05 -0800)]
ANDROID: dm: android-verity: rebase for 4.9
Export the direct_access method of dm_linear target for
dm-android-verity target.
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I46556d882305e5194352946264cbc9c06e5038e4
[AmitP: Rebased the changes for v4.14]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Badhri Jagan Sridharan [Tue, 27 Sep 2016 20:48:29 +0000 (13:48 -0700)]
ANDROID: dm: android-verity: Remove fec_header location constraint
This CL removes the mandate of the fec_header being located right
after the ECC data.
(Cherry-picked from https://android-review.googlesource.com/#/c/280401)
Bug:
28865197
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: Ie04c8cf2dd755f54d02dbdc4e734a13d6f6507b5
Badhri Jagan Sridharan [Tue, 9 Aug 2016 19:47:37 +0000 (12:47 -0700)]
ANDROID: dm: android-verity: adopt changes made to dm callbacks
v4.4 introduced changes to the callbacks used for
dm-linear and dm-verity-target targets. Move to those headers
in dm-android-verity.
Verified on hikey while having
BOARD_USES_RECOVERY_AS_BOOT := true
BOARD_BUILD_SYSTEM_ROOT_IMAGE := true
BUG:
27339727
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: Ic64950c3b55f0a6eaa570bcedc2ace83bbf3005e
Jeremy Compostella [Tue, 10 May 2016 11:10:20 +0000 (13:10 +0200)]
ANDROID: dm: android-verity: pack the fec_header structure
The fec_header structure is generated build time and stored on disk.
The fec_header might be build on a 64 bits machine while it is read
per a 32 bits device or the other way around. In such situations, the
fec_header fields are not aligned as expected by the device and it
fails to read the fec_header structure.
This patch makes the fec_header packed.
Change-Id: Idb84453e70cc11abd5ef3a0adfbb16f8b5feaf06
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Badhri Jagan Sridharan [Thu, 7 Jul 2016 00:16:19 +0000 (17:16 -0700)]
ANDROID: dm: android-verity: Verify header before fetching table
Move header validation logic before reading the verity_table as
an invalid header implies the table is invalid as well.
(Cherry-picked from:
https://partner-android-review.git.corp.google.com/#/c/625203)
BUG:
29940612
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: Ib34d25c0854202f3e70df0a6d0ef1d96f0250c8e
Badhri Jagan Sridharan [Mon, 27 Jun 2016 23:25:55 +0000 (16:25 -0700)]
ANDROID: dm: android-verity: allow adb disable-verity only in userdebug
adb disable-verity was allowed when the phone is in the
unlocked state. Since the driver is now aware of the build
variant, honor "adb disable-verity" only in userdebug
builds.
(Cherry-picked from
https://partner-android-review.git.corp.google.com/#/c/622117)
BUG:
29276559
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I7ce9f38d8c7a62361392c5a8ccebb288f8a3a2ea
Badhri Jagan Sridharan [Sat, 18 Jun 2016 01:54:35 +0000 (18:54 -0700)]
ANDROID: dm: android-verity: mount as linear target if eng build
eng builds dont have verity enabled i.e it does even
have verity metadata appended to the parition. Therefore
add rootdev as linear device and map the entire partition
if build variant is "eng".
(Cherry-picked based on
https://partner-android-review.git.corp.google.com/#/c/618690/)
BUG:
29276559
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I8f5c2289b842b820ca04f5773525e5449bb3f355
Badhri Jagan Sridharan [Fri, 20 May 2016 23:45:45 +0000 (16:45 -0700)]
ANDROID: dm: android-verity: use default verity public key
If the dm-android-verity target does not provide a default
key try using the default public key from the system keyring.
The defualt verity keyid is passed as a kernel command line
argument veritykeyid=.
The order of the dm-android-verity params have been reversed
to facilitate the change.
Old format example:
dm="system none ro,0 1 android-verity Android:#
7e4333f9bba00adfe0ede979e28ed1920492b40f /dev/mmcblk0p43"
New formats supported:
dm="system none ro,0 1 android-verity /dev/mmcblk0p43 Android:#
7e4333f9bba00adfe0ede979e28ed1920492b40f"
(or)
dm="system none ro,0 1 android-verity /dev/mmcblk0p43"
when veritykeyid= is set in the kernel command line.
BUG:
28384658
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I506c89b053d835ab579e703eef2bc1f8487250de
(cherry picked from commit
c5c74d0327729f35b576564976885596c6d0e7fb)
Badhri Jagan Sridharan [Fri, 20 May 2016 23:44:19 +0000 (16:44 -0700)]
ANDROID: dm: android-verity: fix signature verification flag
The bug was that the signature verification was only
happening when verity was disabled. It should always
happen when verity is enabled.
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I2d9354e240d36ea06fc68c2d18d8e87b823a4c2f
(cherry picked from commit
5364b5ca0b1a12a58283b51408e43fc36d4e4fe7)
Jeremy Compostella [Fri, 15 Apr 2016 11:32:54 +0000 (13:32 +0200)]
ANDROID: dm: android-verity: use name_to_dev_t
This patch makes android_verity_ctr() parse its block device string
parameter with name_to_dev_t(). It allows the use of less hardware
related block device reference like PARTUUID for instance.
Change-Id: Idb84453e70cc11abd5ef3a0adfbb16f8b5feaf07
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Badhri Jagan Sridharan [Mon, 21 Mar 2016 17:55:23 +0000 (10:55 -0700)]
ANDROID: dm: android-verity: Mounting root as linear device when verity disabled
This CL makes android-verity target to be added as linear
dm device if when bootloader is unlocked and verity is disabled.
Bug:
27175947
Change-Id: Ic41ca4b8908fb2777263799cf3a3e25934d70f18
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
[AmitP: Folded following android-4.9 commit changes into this patch
7e70218c2699 ("ANDROID: dm: Minor cleanup")
67584ff8412b ("ANDROID: dm: rename dm-linear methods for dm-android-verity")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Badhri Jagan Sridharan [Tue, 15 Dec 2015 04:09:39 +0000 (20:09 -0800)]
ANDROID: dm: android-verity: Add android verity target
This device-mapper target is virtually a VERITY target. This
target is setup by reading the metadata contents piggybacked
to the actual data blocks in the block device. The signature
of the metadata contents are verified against the key included
in the system keyring. Upon success, the underlying verity
target is setup.
BUG:
27175947
Change-Id: I7e99644a0960ac8279f02c0158ed20999510ea97
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
[AmitP: Folded following android-4.9 commit changes into this patch
56f6a6b2b1cd ("ANDROID: dm-android-verity: Rebase on top of 4.1")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
David Zeuthen [Fri, 19 May 2017 21:20:18 +0000 (17:20 -0400)]
ANDROID: dm: do_mounts_dm: Update init/do_mounts_dm.c to the latest ChromiumOS version.
This is needed for AVB.
Bug: None
Test: Compiles.
Change-Id: I45b5d435652ab66ec07420ab17f2c7889f7e4d95
Signed-off-by: David Zeuthen <zeuthen@google.com>
Jeremy Compostella [Mon, 2 May 2016 15:29:28 +0000 (17:29 +0200)]
ANDROID: dm: do_mounts_dm: fix dm_substitute_devices()
When candidate is the last parameter, candidate_end points to the '\0'
character and not the DM_FIELD_SEP character. In such a situation, we
should not move the candidate_end pointer one character backward.
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Badhri Jagan Sridharan [Tue, 9 Feb 2016 00:47:41 +0000 (16:47 -0800)]
ANDROID: dm: do_mounts_dm: Rebase on top of 4.9
1. "dm: optimize use SRCU and RCU" removes the use of dm_table_put.
2. "dm: remove request-based logic from make_request_fn wrapper" necessitates
calling dm_setup_md_queue or else the request_queue's make_request_fn
pointer ends being unset.
[ 7.711600] Internal error: Oops - bad mode: 0 [#1] PREEMPT SMP
[ 7.717519] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W
4.1.15-02273-gb057d16-dirty #33
[ 7.726559] Hardware name: HiKey Development Board (DT)
[ 7.731779] task:
ffffffc005f8acc0 ti:
ffffffc005f8c000 task.ti:
ffffffc005f8c000
[ 7.739257] PC is at 0x0
[ 7.741787] LR is at generic_make_request+0x8c/0x108
....
[ 9.082931] Call trace:
[ 9.085372] [< (null)>] (null)
[ 9.090074] [<
ffffffc0003f4ac0>] submit_bio+0x98/0x1e0
[ 9.095212] [<
ffffffc0001e2618>] _submit_bh+0x120/0x1f0
[ 9.096165] cfg80211: Calling CRDA to update world regulatory domain
[ 9.106781] [<
ffffffc0001e5450>] __bread_gfp+0x94/0x114
[ 9.112004] [<
ffffffc00024a748>] ext4_fill_super+0x18c/0x2d64
[ 9.117750] [<
ffffffc0001b275c>] mount_bdev+0x194/0x1c0
[ 9.122973] [<
ffffffc0002450dc>] ext4_mount+0x14/0x1c
[ 9.128021] [<
ffffffc0001b29a0>] mount_fs+0x3c/0x194
[ 9.132985] [<
ffffffc0001d059c>] vfs_kern_mount+0x4c/0x134
[ 9.138467] [<
ffffffc0001d2168>] do_mount+0x204/0xbbc
[ 9.143514] [<
ffffffc0001d2ec4>] SyS_mount+0x94/0xe8
[ 9.148479] [<
ffffffc000c54074>] mount_block_root+0x120/0x24c
[ 9.154222] [<
ffffffc000c543e8>] mount_root+0x110/0x12c
[ 9.159443] [<
ffffffc000c54574>] prepare_namespace+0x170/0x1b8
[ 9.165273] [<
ffffffc000c53d98>] kernel_init_freeable+0x23c/0x260
[ 9.171365] [<
ffffffc0009b1748>] kernel_init+0x10/0x118
[ 9.176589] Code: bad PC value
[ 9.179807] ---[ end trace
75e1bc52ba364d13 ]---
Bug:
27175947
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I952d86fd1475f0825f9be1386e3497b36127abd0
Will Drewry [Wed, 9 Jun 2010 22:47:38 +0000 (17:47 -0500)]
CHROMIUM: dm: boot time specification of dm=
This is a wrap-up of three patches pending upstream approval.
I'm bundling them because they are interdependent, and it'll be
easier to drop it on rebase later.
1. dm: allow a dm-fs-style device to be shared via dm-ioctl
Integrates feedback from Alisdair, Mike, and Kiyoshi.
Two main changes occur here:
- One function is added which allows for a programmatically created
mapped device to be inserted into the dm-ioctl hash table. This binds
the device to a name and, optional, uuid which is needed by udev and
allows for userspace management of the mapped device.
- dm_table_complete() was extended to handle all of the final
functional changes required for the table to be operational once
called.
2. init: boot to device-mapper targets without an initr*
Add a dm= kernel parameter modeled after the md= parameter from
do_mounts_md. It allows for device-mapper targets to be configured at
boot time for use early in the boot process (as the root device or
otherwise). It also replaces /dev/XXX calls with major:minor opportunistically.
The format is dm="name uuid ro,table line 1,table line 2,...". The
parser expects the comma to be safe to use as a newline substitute but,
otherwise, uses the normal separator of space. Some attempt has been
made to make it forgiving of additional spaces (using skip_spaces()).
A mapped device created during boot will be assigned a minor of 0 and
may be access via /dev/dm-0.
An example dm-linear root with no uuid may look like:
root=/dev/dm-0 dm="lroot none ro, 0 4096 linear /dev/ubdb 0, 4096 4096 linear /dv/ubdc 0"
Once udev is started, /dev/dm-0 will become /dev/mapper/lroot.
Older upstream threads:
http://marc.info/?l=dm-devel&m=
127429492521964&w=2
http://marc.info/?l=dm-devel&m=
127429499422096&w=2
http://marc.info/?l=dm-devel&m=
127429493922000&w=2
Latest upstream threads:
https://patchwork.kernel.org/patch/104859/
https://patchwork.kernel.org/patch/104860/
https://patchwork.kernel.org/patch/104861/
Bug:
27175947
Signed-off-by: Will Drewry <wad@chromium.org>
Review URL: http://codereview.chromium.org/
2020011
Change-Id: I92bd53432a11241228d2e5ac89a3b20d19b05a31
[AmitP: Refactored the original changes based on upstream changes,
commit
e52347bd66f6 ("Documentation/admin-guide: split the kernel parameter list to a separate file")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Sami Tolvanen [Wed, 30 Mar 2016 21:10:13 +0000 (14:10 -0700)]
ANDROID: dm: verity-fec: add sysfs attribute fec/corrected
Add a sysfs entry that allows user space to determine whether dm-verity
has come across correctable errors on the underlying block device.
Bug:
22655252
Bug:
27928374
Change-Id: I80547a2aa944af2fb9ffde002650482877ade31b
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
(cherry picked from commit
7911fad5f0a2cf5afc2215657219a21e6630e001)
[AmitP: Folded following android-4.9 commit changes into this patch
3278f53e4658 ("ANDROID: dm verity fec: add missing release from fec_ktype")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Dmitry Torokhov [Wed, 9 Sep 2015 00:30:52 +0000 (17:30 -0700)]
CHROMIUM: dma-buf: dma-fence: 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>
[AmitP: Refactored original changes by aligning with upstream
naming convention and by using dma_fence_to_sync_pt()
helper instead of container_of().
Also folded following android-4.9 changes into this patch
fb66dc2a6e5e ("ANDROID: dma-buf/sw_sync: Rename active_list to link")].
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Dmitry Torokhov [Thu, 6 Oct 2016 23:14:16 +0000 (16:14 -0700)]
CHROMIUM: cgroups: relax permissions on moving tasks between cgroups
Android expects system_server to be able to move tasks between different
cgroups/cpusets, but does not want to be running as root. Let's relax
permission check so that processes can move other tasks if they have
CAP_SYS_NICE in the affected task's user namespace.
BUG=b:
31790445,chromium:647994
TEST=Boot android container, examine logcat
Change-Id: Ia919c66ab6ed6a6daf7c4cf67feb38b13b1ad09b
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/394927
Reviewed-by: Ricky Zhou <rickyz@chromium.org>
[AmitP: Refactored original changes to align with upstream commit
201af4c0fab0 ("cgroup: move cgroup files under kernel/cgroup/")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Riley Andrews [Tue, 6 Sep 2016 22:16:25 +0000 (15:16 -0700)]
ANDROID: cpuset: Make cpusets restore on hotplug
This deliberately changes the behavior of the per-cpuset
cpus file to not be effected by hotplug. When a cpu is offlined,
it will be removed from the cpuset/cpus file. When a cpu is onlined,
if the cpuset originally requested that that cpu was part of the cpuset,
that cpu will be restored to the cpuset. The cpus files still
have to be hierachical, but the ranges no longer have to be out of
the currently online cpus, just the physically present cpus.
Change-Id: I22cdf33e7d312117bcefba1aeb0125e1ada289a9
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
[AmitP: Refactored original changes to align with upstream commit
201af4c0fab0 ("cgroup: move cgroup files under kernel/cgroup/")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Thierry Strudel [Wed, 15 Jun 2016 00:46:44 +0000 (17:46 -0700)]
ANDROID: cpu: send KOBJ_ONLINE event when enabling cpus
In case some sysfs nodes needs to be labeled with a different label than
sysfs then user needs to be notified when a core is brought back online.
Signed-off-by: Thierry Strudel <tstrudel@google.com>
Bug:
29359497
Change-Id: I0395c86e01cd49c348fda8f93087d26f88557c91
Colin Cross [Mon, 19 Sep 2011 23:42:44 +0000 (16:42 -0700)]
ANDROID: cpuidle: governor: menu: don't use loadavg
get_loadavg doesn't work as intended. According to the comments, it
should be returning an average over a few seconds, but it is actually
reading the instantaneous load. It is almost always returning 0, but
can sometimes, depending on workload, spike very high into the hundreds
even when the average cpu load is under 10%. Disable it for now.
Change-Id: I63ed100af1cf9463549939b8113ed83676db5f86
Signed-off-by: Colin Cross <ccross@android.com>
Martijn Coenen [Mon, 13 Nov 2017 08:55:21 +0000 (09:55 +0100)]
ANDROID: binder: clarify deferred thread work.
Rename the function to more accurately reflect what
it does, and add a comment explaining why we use it.
Change-Id: I8d011c017dfc6e24b5b54fc462578f8e153e5926
Signed-off-by: Martijn Coenen <maco@android.com>
Martijn Coenen [Tue, 24 Oct 2017 14:37:39 +0000 (16:37 +0200)]
ANDROID: binder: show high watermark of alloc->pages.
Show the high watermark of the index into the alloc->pages
array, to facilitate sizing the buffer on a per-process
basis.
Change-Id: I2b40cd16628e0ee45216c51dc9b3c5b0c862032e
Signed-off-by: Martijn Coenen <maco@android.com>
Martijn Coenen [Thu, 19 Oct 2017 13:04:46 +0000 (15:04 +0200)]
ANDROID: binder: Add thread->process_todo flag.
This flag determines whether the thread should currently
process the work in the thread->todo worklist.
The prime usecase for this is improving the performance
of synchronous transactions: all synchronous transactions
post a BR_TRANSACTION_COMPLETE to the calling thread,
but there's no reason to return that command to userspace
right away - userspace anyway needs to wait for the reply.
Likewise, a synchronous transaction that contains a binder
object can cause a BC_ACQUIRE/BC_INCREFS to be returned to
userspace; since the caller must anyway hold a strong/weak
ref for the duration of the call, postponing these commands
until the reply comes in is not a problem.
Note that this flag is not used to determine whether a
thread can handle process work; a thread should never pick
up process work when thread work is still pending.
Before patch:
------------------------------------------------------------------
Benchmark Time CPU Iterations
------------------------------------------------------------------
BM_sendVec_binderize/4 45959 ns 20288 ns 34351
BM_sendVec_binderize/8 45603 ns 20080 ns 34909
BM_sendVec_binderize/16 45528 ns 20113 ns 34863
BM_sendVec_binderize/32 45551 ns 20122 ns 34881
BM_sendVec_binderize/64 45701 ns 20183 ns 34864
BM_sendVec_binderize/128 45824 ns 20250 ns 34576
BM_sendVec_binderize/256 45695 ns 20171 ns 34759
BM_sendVec_binderize/512 45743 ns 20211 ns 34489
BM_sendVec_binderize/1024 46169 ns 20430 ns 34081
After patch:
------------------------------------------------------------------
Benchmark Time CPU Iterations
------------------------------------------------------------------
BM_sendVec_binderize/4 42939 ns 17262 ns 40653
BM_sendVec_binderize/8 42823 ns 17243 ns 40671
BM_sendVec_binderize/16 42898 ns 17243 ns 40594
BM_sendVec_binderize/32 42838 ns 17267 ns 40527
BM_sendVec_binderize/64 42854 ns 17249 ns 40379
BM_sendVec_binderize/128 42881 ns 17288 ns 40427
BM_sendVec_binderize/256 42917 ns 17297 ns 40429
BM_sendVec_binderize/512 43184 ns 17395 ns 40411
BM_sendVec_binderize/1024 43119 ns 17357 ns 40432
Signed-off-by: Martijn Coenen <maco@android.com>
Change-Id: Ia70287066d62aba64e98ac44ff1214e37ca75693
Ganesh Mahendran [Tue, 26 Sep 2017 09:56:25 +0000 (17:56 +0800)]
ANDROID: binder: fix node sched policy calculation
We should use FLAT_BINDER_FLAG_SCHED_POLICY_MASK as
the mask to calculate sched policy.
Change-Id: Ic252fd7c68495830690130d792802c02f99fc8fc
Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
Ganesh Mahendran [Wed, 27 Sep 2017 07:12:25 +0000 (15:12 +0800)]
ANDROID: binder: init desired_prio.sched_policy before use it
In function binder_transaction_priority(), we access
desired_prio before initialzing it.
This patch fix this.
Change-Id: I9d14d50f9a128010476a65b52631630899a44633
Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
Martijn Coenen [Thu, 24 Aug 2017 13:23:36 +0000 (15:23 +0200)]
ANDROID: binder: fix transaction leak.
If a call to put_user() fails, we failed to
properly free a transaction and send a failed
reply (if necessary).
Bug:
63117588
Test: binderLibTest
Change-Id: Ia98db8cd82ce354a4cdc8811c969988d585c7e31
Signed-off-by: Martijn Coenen <maco@android.com>
Martijn Coenen [Mon, 8 May 2017 16:33:22 +0000 (09:33 -0700)]
ANDROID: binder: Add tracing for binder priority inheritance.
Bug:
34461621
Change-Id: I5ebb1c0c49fd42a89ee250a1d70221f767c82c7c
Signed-off-by: Martijn Coenen <maco@google.com>
Martijn Coenen [Fri, 26 May 2017 17:48:56 +0000 (10:48 -0700)]
ANDROID: binder: don't check prio permissions on restore.
Because we have disabled RT priority inheritance for
the regular binder domain, the following can happen:
1) thread A (prio 98) calls into thread B
2) because RT prio inheritance is disabled, thread B
runs at the lowest nice (prio 100) instead
3) thread B calls back into A; A will run at prio 100
for the duration of the transaction
4) When thread A is done with the call from B, we will
try to restore the prio back to 98. But, we fail
because the process doesn't hold CAP_SYS_NICE,
neither is RLIMIT_RT_PRIO set.
While the proper fix going forward will be to
correctly apply CAP_SYS_NICE or RLIMIT_RT_PRIO,
for now it seems reasonable to not check permissions
on the restore path.
Change-Id: Ibede5960c9b7bb786271c001e405de50be64d944
Signed-off-by: Martijn Coenen <maco@android.com>
Martijn Coenen [Fri, 23 Jun 2017 17:13:43 +0000 (10:13 -0700)]
ANDROID: binder: add RT inheritance flag to node.
Allows a binder node to specify whether it wants to
inherit real-time scheduling policy from a caller.
Change-Id: I375b6094bf441c19f19cba06d5a6be02cd07d714
Signed-off-by: Martijn Coenen <maco@android.com>
Martijn Coenen [Wed, 7 Jun 2017 17:02:12 +0000 (10:02 -0700)]
ANDROID: binder: improve priority inheritance.
By raising the priority of a thread selected for
a transaction *before* we wake it up.
Delay restoring the priority when doing a reply
until after we wake-up the process receiving
the reply.
Change-Id: Ic332e4e0ed7d2d3ca6ab1034da4629c9eadd3405
Signed-off-by: Martijn Coenen <maco@google.com>
Martijn Coenen [Wed, 7 Jun 2017 16:29:14 +0000 (09:29 -0700)]
ANDROID: binder: add min sched_policy to node.
This change adds flags to flat_binder_object.flags
to allow indicating a minimum scheduling policy for
the node. It also clarifies the valid value range
for the priority bits in the flags.
Internally, we use the priority map that the kernel
uses, e.g. [0..99] for real-time policies and [100..139]
for the SCHED_NORMAL/SCHED_BATCH policies.
Bug:
34461621
Bug:
37293077
Change-Id: I12438deecb53df432da18c6fc77460768ae726d2
Signed-off-by: Martijn Coenen <maco@google.com>
Martijn Coenen [Wed, 7 Jun 2017 00:04:42 +0000 (17:04 -0700)]
ANDROID: binder: add support for RT prio inheritance.
Adds support for SCHED_BATCH/SCHED_FIFO/SCHED_RR
priority inheritance.
Change-Id: I71f356e476be2933713a0ecfa2cc31aa141e2dc6
Signed-off-by: Martijn Coenen <maco@google.com>
[AmitP: Include <uapi/linux/sched/types.h> for struct sched_param]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Tobias Lindskog [Mon, 9 Feb 2015 07:10:39 +0000 (08:10 +0100)]
ANDROID: ashmem: Shrink 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>
John Stultz [Fri, 16 Dec 2011 02:51:04 +0000 (18:51 -0800)]
ANDROID: 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.
Change-Id: Ie604c9f8f4d0ee6bc2aae1a96d261c8373a1a2dc
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>
Dmitry Shmidt [Thu, 12 Jan 2017 20:28:08 +0000 (12:28 -0800)]
ANDROID: fiq_debugger: Remove wakelock.h dependencies
Change-Id: I16a0dd4c4c6ee6440ce8a921bc0834d904b81f37
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Dmitry Shmidt [Wed, 11 May 2016 18:01:02 +0000 (11:01 -0700)]
ANDROID: 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>
Dmitry Shmidt [Wed, 4 May 2016 20:51:38 +0000 (13:51 -0700)]
ANDROID: 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>
Arve Hjønnevåg [Sat, 3 May 2014 03:31:07 +0000 (20:31 -0700)]
ANDROID: 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>
Arve Hjønnevåg [Sat, 3 May 2014 02:52:54 +0000 (19:52 -0700)]
ANDROID: 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>
Colin Cross [Thu, 3 Apr 2014 01:49:39 +0000 (18:49 -0700)]
ANDROID: 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>
[AmitP: Remove unused stackframe -> sp to align with upstream commit
31e43ad3b74a ("arm64: unwind: remove sp from struct stackframe")
Also folded following android-4.9 commit changes into this patch
a33d9f9fa333 ("ANDROID: fiq_debugger: Pass task parameter to unwind_frame()")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Colin Cross [Thu, 3 Apr 2014 01:42:13 +0000 (18:42 -0700)]
ANDROID: 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>
Colin Cross [Sat, 5 Apr 2014 00:05:19 +0000 (17:05 -0700)]
ANDROID: 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>
Colin Cross [Thu, 3 Apr 2014 01:37:29 +0000 (18:37 -0700)]
ANDROID: 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>
Colin Cross [Sat, 5 Apr 2014 05:58:23 +0000 (22:58 -0700)]
ANDROID: 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>
[AmitP: Folded following android-4.9 commit changes into this patch
daeea72326db ("ANDROID: fiq_debugger: Build fixes for 4.1")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Colin Cross [Thu, 3 Apr 2014 01:30:04 +0000 (18:30 -0700)]
ANDROID: 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>
Colin Cross [Thu, 15 Mar 2012 02:26:53 +0000 (19:26 -0700)]
ANDROID: kdb: support new lines without carriage returns
kdb expects carriage returns through the serial port to terminate
commands. Modify it to accept the first seen carriage return or
new line as a terminator, but not treat \r\n as two terminators.
Change-Id: I06166017e7703d24310eefcb71c3a7d427088db7
Signed-off-by: Colin Cross <ccross@android.com>
Arve Hjønnevåg [Tue, 15 Jan 2013 23:10:31 +0000 (15:10 -0800)]
ANDROID: ARM: fiq_debugger: Update tty code for 3.9
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Colin Cross [Thu, 1 Nov 2012 00:41:39 +0000 (17:41 -0700)]
ANDROID: ARM: fiq_debugger: lock between tty and console writes
debug_console_write calls debug_uart_flush, which will usually wait
until the serial port fifo empties. If another thread is continuously
calling fiq_tty_write, the fifo will constantly be refilled and
debug_uart_flush might never return.
Add a spinlock that is locked in debug_console_write and fiq_tty_write
to ensure they can't run at the same time. This has an extra advantage
of preventing lines from the console and tty from being mixed together.
Also reduce the size returned by fiq_tty_write_room to keep the time
spent with the spinlock held to a reasonable value.
In addition, make sure fiq context can't loop forever by never calling
debug_uart_flush when the console is enabled.
Change-Id: I5712b01f740ca0c84f680d2032c9fa16b7656939
Signed-off-by: Colin Cross <ccross@android.com>
[AmitP: Folded following android-4.9 commit changes into this patch
b4ffddec3493 ("ANDROID: ARM: fiq_debugger: fix uninitialised spin_lock.")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Colin Cross [Fri, 20 Jul 2012 01:40:04 +0000 (18:40 -0700)]
ANDROID: ARM: fiq_debugger: add process context reboot command
kernel_restart cannot be called from interrupt context. Add support for
commands called from a work function, and implement the "reboot" command
there. Also rename the existing irq-mode command to "reset" and change
it to use machine_restart instead of kernel_restart.
Change-Id: I3c423147c01db03d89e95a5b99096ca89462079f
Signed-off-by: Colin Cross <ccross@android.com>
[AmitP: Folded following android-4.9 commit changes into this patch
3b61956a41a5 ("ANDROID: fiq_debugger: Fix minor bug in code")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Colin Cross [Sun, 18 Mar 2012 22:25:55 +0000 (15:25 -0700)]
ANDROID: ARM: fiq_debugger: fix multiple consoles and make it a preferred console
Fix setting up consoles on multiple fiq debugger devices by
splitting the tty driver init into the initcall, and initializing
the single tty device during probe. Has the side effect of moving
the tty device node to /dev/ttyFIQx, where x is the platform device
id, which should normally match the serial port.
To avoid having to pass a different console=/dev/ttyFIQx for every
device, make the fiq debugger a preferred console that will be used
by default if no console was passed on the command line.
Change-Id: I6cc2670628a41e84615859bc96adba189966d647
Signed-off-by: Colin Cross <ccross@android.com>
Todd Poynor [Wed, 3 Jul 2013 22:48:04 +0000 (15:48 -0700)]
ANDROID: ARM: kgdb: ignore breakpoint instructions from user mode
Avoid conflicts with user mode usage of the same instructions, as with
Clang -ftrapv.
Change-Id: I12d1c6d8f94376bfd2503cb0be843d7e478fb6ea
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Colin Cross [Thu, 15 Mar 2012 02:23:29 +0000 (19:23 -0700)]
ANDROID: ARM: fiq_debugger: add support for kgdb
Adds polling tty ops to the fiq debugger console tty, which allows
kgdb to run against an fiq debugger console.
Add a check in do_sysrq to prevent enabling kgdb from the fiq
debugger unless a flag (writable only by root) has been set. This
should make it safe to enable KGDB on a production device.
Also add a shortcut to enable the console and kgdb together, to
allow kgdb to be enabled when the shell on the console is not
responding.
Change-Id: Ifc65239ca96c9887431a6a36b9b44a539002f544
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Thu, 15 Mar 2012 19:57:20 +0000 (12:57 -0700)]
ANDROID: ARM: fiq_debugger: add debug_putc
Convert all the calls to state->pdata->uart_putc to a debug_putc
helper.
Change-Id: Idc007bd170ff1b51d0325e238105ae0c86d23777
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Wed, 14 Mar 2012 23:29:47 +0000 (16:29 -0700)]
ANDROID: ARM: fiq_debugger: add support for reboot commands
Pass the rest of the reboot command to kernel_restart to allow
reboot bootloader to work from FIQ debugger.
Change-Id: I4e7b366a69268dda17ffcf4c84f2373d15cb1271
Signed-off-by: Colin Cross <ccross@android.com>
Iliyan Malchev [Sun, 6 Jun 2010 00:36:24 +0000 (17:36 -0700)]
ANDROID: ARM: fiq_debugger: Add generic fiq serial debugger
Change-Id: Ibb536c88f0dbaf4766d0599296907e35e42cbfd6
Signed-off-by: Iliyan Malchev <malchev@google.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
[AmitP: Upstream commit
2a1f062a4acf ("sched/headers: Move signal wakeup &
sigpending methods from <linux/sched.h> into <linux/sched/signal.h>")
moved few signal definitions to <linux/sched/signal.h>. Hence include
that instead of <linux/sched.h>.
Also folded following android-4.9 commit changes into this patch
69279c68eed4 ("ANDROID: ARM: fiq_debugger: fix compiling for v3.3")
d05890d37ecc ("ANDROID: ARM: fiq_debugger: Fix to compile on 3.7")
9de62e0d3f24 ("ANDROID: ARM: fiq_debugger: Use kmsg_dumper to dump kernel logs")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Arve Hjønnevåg [Tue, 25 Jun 2013 01:02:05 +0000 (18:02 -0700)]
ANDROID: ARM: fiq_glue: Add custom fiq return handler api.
Change-Id: I5ff2764e85151ca0a88576542fda07c2d33dd065
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Arve Hjønnevåg [Tue, 28 Sep 2010 00:50:00 +0000 (17:50 -0700)]
ANDROID: ARM: fiq_glue: Add fiq_glue
Change-Id: I27d2554e07d9de204e0a06696d38db51608d9f6b
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
Jin Qian [Wed, 30 Sep 2015 01:57:35 +0000 (18:57 -0700)]
ANDROID: arm64: pass return address to dma_common_contiguous_remap
Added return address to show caller function in /proc/vmallocinfo
Change-Id: Ieb0bbf6ec82b561cea6ff18f0516744050dfc269
Greg Hackmann [Thu, 28 Aug 2014 21:00:10 +0000 (14:00 -0700)]
ANDROID: arm64: check for upper PAGE_SHIFT bits in pfn_valid()
pfn_valid() returns a false positive when the lower (64 - PAGE_SHIFT)
bits match a valid pfn but some of the upper bits are set. This caused
a kernel panic in kpageflags_read() when a userspace utility parsed
/proc/*/pagemap, neglected to discard the upper flag bits, and tried to
lseek()+read() from the corresponding offset in /proc/kpageflags.
A valid pfn will never have the upper PAGE_SHIFT bits set, so simply
check for this before passing the pfn to memblock_is_memory().
Change-Id: Ief5d8cd4dd93cbecd545a634a8d5885865cb5970
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Arve Hjønnevåg [Wed, 10 Jun 2009 03:17:45 +0000 (20:17 -0700)]
ANDROID: arm: mm: Optionally flush entire dcache from v6_dma_flush_range
If CACHE_FLUSH_RANGE_LIMIT is defined, then the entire dcache will
be flushed if the requested range is larger than this limit.
Change-Id: I29277d645a9d6716b1952cf3b870c78496261dd0
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Arve Hjønnevåg [Sat, 1 Dec 2012 01:05:40 +0000 (17:05 -0800)]
ANDROID: arm: decompressor: Flush tlb before swiching domain 0 to client mode
If the bootloader used a page table that is incompatible with domain 0
in client mode, and boots with the mmu on, then swithing domain 0 to
client mode causes a fault if we don't flush the tlb after updating
the page table pointer.
v2: Add ISB before loading dacr.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
JP Abgrall [Mon, 29 Apr 2013 23:07:00 +0000 (16:07 -0700)]
ANDROID: arm: fault: assume no context when IRQs are disabled during data abort.
Bail out early if IRQs are disabled in do_page_fault or else
[14415.157266] BUG: sleeping function called from invalid context at arch/arm/mm/fault.c:301
Russell King's idea from
http://comments.gmane.org/gmane.linux.ports.arm.omap/59256
Signed-off-by: JP Abgrall <jpa@google.com>
Dima Zavin [Tue, 23 Aug 2011 22:56:50 +0000 (15:56 -0700)]
ANDROID: arm: add option to flush console before reboot
If the console_lock was held while the system was rebooted, the messages
in the temporary logbuffer would not have propogated to all the console
drivers.
This force releases the console lock if it failed to be acquired.
Change-Id: I193dcf7b968be17966833e50b8b8bc70d5d9fe89
Signed-off-by: Dima Zavin <dima@android.com>
Greg Hackmann [Wed, 10 Sep 2014 00:36:05 +0000 (17:36 -0700)]
ANDROID: arm64: process: dump memory around registers when displaying regs
A port of
8608d7c4418c75841c562a90cddd9beae5798a48 to ARM64. Both the
original code and this port are limited to dumping kernel addresses, so
don't bother if the registers are from a userspace process.
Change-Id: Idc76804c54efaaeb70311cbb500c54db6dac4525
Signed-off-by: Greg Hackmann <ghackmann@google.com>
San Mehat [Tue, 25 Aug 2009 23:52:22 +0000 (16:52 -0700)]
ANDROID: arm: process: Add display of memory around registers when displaying regs.
This is extremely useful in diagnosing remote crashes, and is based heavily
on original work by <md@google.com>.
Signed-off-by: San Mehat <san@google.com>
Cc: Michael Davidson <md@google.com>
[ARM] process: Use uber-safe probe_kernel_address() to read mem when dumping.
This prevents the dump from taking pagefaults / external aborts.
Change-Id: I8df76e8638780f94fb1bd7ea4471e3f7b01df950
Signed-off-by: San Mehat <san@google.com>
Dmitry Shmidt [Tue, 28 Mar 2017 20:30:18 +0000 (13:30 -0700)]
ANDROID: arm64: Allow to choose appended kernel image
By default appended kernel image is Image.gz-dtb.
New config option BUILD_ARM64_APPENDED_KERNEL_IMAGE_NAME
allows to choose between Image.gz-dtb and Image-dtb.
Change-Id: I1c71b85136f1beeb61782e4646820718c1ccd7e4
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
[AmitP: Add BUILD_ARM64_APPENDED_KERNEL_IMAGE_NAME as one of the
default build targets to align with upstream commit
06995804b57 ("arm64: Use full path in KBUILD_IMAGE definition")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Haojian Zhuang [Fri, 22 Apr 2016 09:23:29 +0000 (17:23 +0800)]
ANDROID: arm64: add option to build Image-dtb
Some bootloaders couldn't decompress Image.gz-dtb.
Change-Id: I698cd0c4ee6894e8d0655d88f3ecf4826c28a645
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
[AmitP: Folded following android-4.9 commit changes into this patch
56b70ac2447f ("ANDROID: ARM64: Ignore Image-dtb from git point of view")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Alex Ray [Mon, 17 Mar 2014 20:44:01 +0000 (13:44 -0700)]
ANDROID: arm64: add option to build Image.gz/dtb combo
Allows a defconfig to set a list of dtbs to concatenate with an
Image.gz to create a Image.gz-dtb.
Includes
8adb162 arm64: Fix correct dtb clean-files location
Change-Id: I0b462322d5c970f1fdf37baffece7ad058099f4a
Signed-off-by: Alex Ray <aray@google.com>
Colin Cross [Wed, 17 Apr 2013 23:58:36 +0000 (16:58 -0700)]
ANDROID: arm: convert build of appended dtb zImage to list of dtbs
Allow CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE_NAMES to specify
a space separated list of dtbs to append to the zImage,
and name the resulting file zImage-dtb
Change-Id: Ied5d0bafbd1d01fc1f109c15c4283de7029903c9
Signed-off-by: Colin Cross <ccross@android.com>
Erik Gilling [Mon, 25 Mar 2013 22:04:41 +0000 (15:04 -0700)]
ANDROID: arm: add config option to build zImage/dtb combo
Allows a defconfig to set a default dtb to concatenate with a zImage
to create a zImage-dtb.<dtb name>
Signed-off-by: Erik Gilling <konkers@android.com>
Change-Id: I34b643b1c49228fbae88a56e46c93c478089620d
Benoit Goby [Fri, 8 Nov 2013 23:24:19 +0000 (15:24 -0800)]
ANDROID: arm: Fix dtb list when DTB_IMAGE_NAMES is empty
In the 3.10 kernel, dtb-y is not defined in Makefile.boot anymore
but in dts/Makefile, so it needs to be included too.
Change-Id: I6d6fccf933709bcb6220ce8f12b4b9e2a7c40d63
Signed-off-by: Benoit Goby <benoit@android.com>
Greg Hackmann [Tue, 2 Dec 2014 00:13:30 +0000 (16:13 -0800)]
ANDROID: arch: force -fno-pic
The Android toolchains enable -fpic by default. -fpic isn't
needed for the kernel and breaks CONFIG_JUMP_LABEL, so turn it off.
Change-Id: I685da1dc60e4cf1e9abcfb56e03654675ac02a0c
Signed-off-by: Greg Hackmann <ghackmann@google.com>
[AmitP: Folded following android-4.9 commit changes into this patch
5acb60f60a2c ("ANDROID: arch: x86: disable pic for Android toolchain")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Steve Muckle [Thu, 28 Sep 2017 00:18:48 +0000 (17:18 -0700)]
ANDROID: add script to fetch android kernel config fragments
The Android kernel config fragments now live in a separate repository.
To prevent others from having to search for this location, add a script
to fetch and unpack the fragments.
Update .gitignore to include these fragments.
Change-Id: If2d4a59b86e4573b0a9b3190025dfe4191870b46
Signed-off-by: Steve Muckle <smuckle@google.com>
Linus Torvalds [Sun, 12 Nov 2017 18:46:13 +0000 (10:46 -0800)]
Linux 4.14
Linus Torvalds [Sun, 12 Nov 2017 18:12:41 +0000 (10:12 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of small fixes:
- make KGDB work again which got broken by the conversion of WARN()
to #UD. The WARN fixup needs to run before the notifier callchain,
otherwise KGDB tries to handle it and crashes.
- disable KASAN in the ORC unwinder to prevent false positive KASAN
warnings
- prevent default mapping above 47bit when 5 level page tables are
enabled
- make the delay calibration optimization work correctly, which had
the conditionals the wrong way around and was operating on data
which was not yet updated.
- remove the bogus X86_TRAP_BP trap init from the default IDT init
table, which broke 32bit int3 handling by overwriting the correct
int3 setup.
- replace this_cpu* with boot_cpu_data access in the preemptible
oprofile init code"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/debug: Handle warnings before the notifier chain, to fix KGDB crash
x86/mm: Fix ELF_ET_DYN_BASE for 5-level paging
x86/idt: Remove X86_TRAP_BP initialization in idt_setup_traps()
x86/oprofile/ppro: Do not use __this_cpu*() in preemptible context
x86/unwind: Disable KASAN checking in the ORC unwinder
x86/smpboot: Make optimization of delay calibration work correctly