With this patch the system heap will only try to allocate from each
order as long as allocations succeed. If it failes to obtain a higher
order allocation, it doesn't retry that order.
Change-Id: I0d9144b4c30cc0e427acdcad2f1f12ae7f37f827
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
If a buffer's user mappings are not going to be faulted
in it need not be allocated page wise. We can optimize
this common case by allocating an sglist of larger chunks
rather than creating an entry for each page in the
allocation.
Change-Id: I47814990e55c7bdb7abeaa2af824744b0a97602d
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
First bump speed up to hispeed_freq whenever the current speed is below
hispeed_freq, instead of only when the current speed is the minimum speed.
The previous code made it too difficult to use hispeed_freq as a common
intermediate speed on systems that frequently run at speeds between
minimum and hispeed_freq.
Change-Id: I04ec30bafabf5741e267ff289209b8c2d846824b
Signed-off-by: Todd Poynor <toddpoynor@google.com>
ffs_func_eps_enable always take the highspeed usb_endpoint_descriptor
if it is available. Choose the correct usb_endpoint_descriptor
depending on the gadget speed instead.
Change-Id: I5b8444cfdf1b6fe1eef25525fb7a0a0f617a353e
Signed-off-by: Benoit Goby <benoit@android.com>
We have found that faulting in the mappings for cached
allocations has a significant performance impact and is
only a benefit if only a small part of the buffer is
touched by the cpu (an uncommon case for software rendering).
This patch introduces a ION_FLAG_CACHED_NEEDS_SYNC
which determines whether a mapping should be created by
faulting or at mmap time. If this flag is set,
userspace must manage the caches explictly using the SYNC ioctl.
Change-Id: I227561f49e0f382a481728fb55ac5c930fc26025
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
This driver presents a standard USB audio class interface to the host
and an ALSA PCM device to userspace
Change-Id: If16b14a5ff27045f9cb2daaf1ae9195c5eeab7d0
Signed-off-by: Mike Lockwood <lockwood@google.com>
The control request will be used by the host to enable/disable USB audio
and the ioctl will be used by userspace to read the audio mode
Change-Id: I81c38611b588451e80eacdccc417ca6e11c60cab
Signed-off-by: Mike Lockwood <lockwood@google.com>
Place SLPZ pin in sleep state at system suspend time if a GPIO is
provided by board platform data.
Change-Id: I93c61fa0ae474e968e0f909209c9bfcaafe3dd2c
Signed-off-by: Todd Poynor <toddpoynor@google.com>
It is possible for a buffer to exist only as a dma_buf file
descriptor without it being held in any handles. When this
occurs it is impossible to track where the buffer is in the
system (without traversing every process in the system and
inspecting its file table). When buffers are orphaned like
this, copy the task comm and pid of the last client to hold
them into the buffer so we have a debugging hint as to where
this buffer came from. In practice this will probalby be
the process that allocated the buffer.
Change-Id: I49d179f9ccdee36982f365af15d0f0b577c6347e
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
If preemted during ion_free after the refcount is updated but
before the handle can be removed from the rb_tree, import
might find that handle in the tree and try to reuse it
when execution returns to free, the handle will be cleaned
up leaving the caller of import with a corrupt handle.
This patch modifies the locking to protect agains this race.
Change-Id: I31d18cc6398f0ca18e05cd919e2bcf86fa18d568
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
In the past, a process could only see its own stats (uid-based summary,
and details).
Now we allow any process to see other UIDs uid-based stats, but still
hide the detailed stats.
Change-Id: I7666961ed244ac1d9359c339b048799e5db9facc
Signed-off-by: JP Abgrall <jpa@google.com>
Same units as power_supply, don't need 1/10000 deg C and conversion
is error-prone.
Change-Id: I8cf146d2a7725df2dacc415daa66b2986b69f2a7
Signed-off-by: Todd Poynor <toddpoynor@google.com>
For reflecting board-level decisions on whether USB or AC charger
is connected, which may differ from charger power supply notion
of USB input path (which may be connected to an AC charger) vs.
AC input path.
Change-Id: I9d2eb446db8b4d9496ba7ce1472d0e7a4d4e24ef
[toddpoynor@google.com: refactoring]
Signed-off-by: hongmin.son <hongmin.son@samsung.com>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Avoid shutdown due to battery capacity or temperature out of range.
Change-Id: I54abe4dc54bf2fb8a9b972a3940e6fd93cc60473
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Previously, metadata was stored in the allocated pages themselves
during allocation. However the system can only have a limited
number of kmapped pages. A very large allocation might exceed
this limit.
Change-Id: Ibe972096e83924bf5e621d8282c4cd133ca75b0a
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
Since the smp call to stop the other cpus are handled in those
cpus in interrupt context, there's a potential for those smp
handlers to interrupt threads holding spin locks (such as the
one a mutex holds). This prevents those threads from ever
releasing their spin lock, so if the cpu doing the shutdown
is allowed to switch to another thread that tries to grab the
same lock/mutex, we could get into a deadlock (the spin lock
call is called with preemption disabled in the mutex lock code).
To avoid that possibility, disable preemption before doing the
smp_send_stop().
Change-Id: I7976c5382d7173fcb3cd14da8cc5083d442b2544
Signed-off-by: Mike J. Chen <mjchen@google.com>
Refactor the dpm suspend watchdog code and add watchdogs
on resume too. The dpm wachdog prints the stack trace and
reboots the system if a device takes more than 12 seconds
to suspend or resume.
Change-Id: If00c047a17b80bdc13a8426393c698bc450a7347
Signed-off-by: Benoit Goby <benoit@android.com>
Based on Tuna code from 3.0 ported to 3.4 alarm API.
Change-Id: I9b13209963d5a5043237e9e29f3cb07c40583af2
Signed-off-by: Todd Poynor <toddpoynor@google.com>
If dma_buf_fd fails, the dma_buf needs to be cleaned up by
calling dma_buf_put. dma_buf_put will call ion_dma_buf_release
which in turn calls ion_buffer_put to clean up the buffer
reference. Calling ion_buffer_put after dma_buf_put drops the
reference count by one more which is incorrect. Fix this by
getting rid of the extra ion_buffer_put call.
Change-Id: Ieb3a7b781bf2dc299c45384dbf0a12d186adeb22
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Add a generic battery power supply and glue logic for talking to the
board battery driver. This driver handles common chores such as:
* periodic battery level and health monitoring
* kernel log reporting and other debugging features for key
properties provided by different charger, fuel gauge, etc.
components
* ensure properties such as battery health are made available to
userspace
* common processing for board-level battery/case temperature sensors
and policy for charging status based on battery health
Based on work by himihee.seo@samsung.com, ms925.kim@samsung.com, and
joshua.chang@samsung.com.
Change-Id: I5fa8e8d68811d84820b7a130b0245ad2b5b6d36b
Signed-off-by: Todd Poynor <toddpoynor@google.com>
ION_IOC_MAP, ION_IOC_SHARE, and ION_IOC_IMPORT may return
success when an error occurs.
Add correct error handling to ION_IOC_MAP, ION_IOC_SHARE, and
ION_IOC_IMPORT.
Change-Id: I61c6b0c574da425604235b2d39e13e4a27f7b6f3
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
Several functions in the ion interface is missing
EXPORT_SYMBOL. This is needed to allow clients to
use these functions from kernel modules.
Add EXPORT_SYMBOL to functions that are supposed
to be exposed.
Change-Id: I25611f7c367fd131daf5fb652abbea77e89a3d06
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
The condition argument to the WARN call in ion_free and
ion_share_dma_buf are missing. Add the argument to
allow correct printing of warning message.
Change-Id: I9b233992d5034f8780296cae6b42d77699f14cce
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
mmc_sdio_init_card function is doing necessary initialization
Change-Id: I7d2e432b2af8a76267378acba07e3e4e8fd1e6bc
Signed-off-by: Hosung Kim <hosung0.kim@samsung.com>
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>
Not useful to have a separate, non-realtime workqueue for speed down
events, avoid priority inversion for speed up events.
Change-Id: Iddcd05545245c847aa1bbe0b8790092914c813d2
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Fix a problem where the hung task mechanism was deeming the interactive
clock boost thread as hung. This was because the thread is created at
module init but never run/woken up until needed. If the governor is not
being used this can be forever. To workaround this explicitly wake up
the thread once all the necessary data structures are initialized. The
latter required some minor code shuffle.
Signed-off-by: Sam Leffler <sleffler@chromium.org>
Change-Id: Ie2c058dd75dcb6460ea10e7ac997e46baf66b1fe
Register an idle notifier only when the governor is active. Also
short-circuit work of idle end if the governor is not enabled.
Signed-off-by: Sam Leffler <sleffler@chromium.org>
Change-Id: I4cae36dd2e7389540d337d74745ffbaa0131870f
Don't reset next_string_id every time the gadget is enabled, this makes
the next strings allocated overwrite strings allocated at probe time.
Instead, fix rndis not to allocate new string ids on every config bind.
Change-Id: Ied28ee416bb6f00c434c34176fe5b7f0dcb2b2d4
Signed-off-by: Benoit Goby <benoit@android.com>
This is deprecated in favor of using the dma_buf api which will
automatically sync a buffer to memory when it is mapped to a device.
However, that functionality is not ready, so this patch adds the
ability to sync a buffer explicitly.
Change-Id: Ia15810a13cd5c4b939f4afa5c8e721c89fac76d4
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
On some systems there is a performance benefit to reducing tlb pressure
by minimizing the number of chunks in an allocation.
Change-Id: Ie6ff215a5f32a837bf3103f79a09748e38759f0e
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
This patch adds cache maintenance operations to ion. As per mailing
list discussions regarding dma_buf, cache operations are done implicitly.
At buffer allocaiton time the user can select whether he'd like mappings
(both kernel and user) to be cached. When cached mappings are selected,
no mappings will be created for a buffer at mmap time. Instead pages will
be faulted in one at a time so we can track which pages require flushing
before dma. When the buffers are mapped for dma (via the dma_buf apis)
any pages which were touched will be synced for device.
Change-Id: Id5d6894e8bb52af038c91dd895143bf3b4203b0b
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
