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>
create_bulk_endpoints should not be __init since it is called when
accessory is enabled
Change-Id: If827a4531f0f6c15af938345163923186368e2a5
Signed-off-by: Benoit Goby <benoit@android.com>
And supply name will be used as wakeup source name.
Change-Id: I53075491c6e1a4c66755afe8a40b7166cd8d6cb2
Signed-off-by: Todd Poynor <toddpoynor@google.com>
When mapping carveout buffers into userspace, only map
the size of the vma given, not the full size of the buffer
since clients may map less than the buffer size.
Change-Id: I1b391b23219455e879a900d947c728db3c8c4a76
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
When destroying a handle, all kernel mappings to that handle
should be destroyed. Other handles may still have references
and valid mappings to the buffer underneath which should not
be destroyed. Loop on the handle reference count, not the buffer
reference count to get rid of all kernel mappings for the handle.
Change-Id: I7dc5d6a86513fc5fa4e21110ceab434714ea2493
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Previously the ion_system_heap was using GFP_KERNEL, forcing all allocations
to be in lowmem. This quickly causes us to run out of lowmem.
Change-Id: I6d502a5f1c20c8a8e44fb5903fcb228f8435a564
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
This patch sets the dma_address field of the sglist representing
an allocation at allocation time. This technically breaks the dma api
which states that these addresses should be set when a particular device
takes ownership of a buffer via the dma_map apis. In the case of our
systems the only dma address space is physical addresses. Additionally,
we can not afford the overhead of calling dma_map_sg from this location
as it implies a cache invalidate that is not necessary if the memory
was previously mapped cached. Instead, the expectation is that memory
being returned from the heaps is ready for dma in that if any cached
mappings of that memory exist they have been invalidated.
Change-Id: Ib3025e80cee52ac0e9d809291e0196a084ea97bd
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
Add support for FunctionFS (ffs) to implement usb functions in userspace.
The aliases property stores the list of functions that are implemented
using functionfs.
For example:
echo "adb,mtp" > /sys/class/android_usb/android0/f_ffs/aliases
Then when the function are enabled:
echo "adb,acm" > /sys/class/android_usb/android0/functions
Internally, ffs and acm will be used.
Change-Id: I44117b183d48a5a99ddbee3ef2cf8998be74598e
Signed-off-by: Benoit Goby <benoit@android.com>
At least one map_dma() implementation (EXYNOS_CONTIG) assumes the fields
are filled in
Change-Id: I88c84dc5663df41f9aa9401b5f80fc2570f9dd95
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Product names may contain spaces and scanf %s only matches the 1st word.
Use strlcpy instead.
Change-Id: Ie8703fea9775f7fc17fe615a42597ca3816d36b0
Signed-off-by: Benoit Goby <benoit@android.com>
This patch adds an interface to return and sg_table given a
valid ion handle.
Change-Id: Icd948c60c1af0a4279f337bcd591cd39b46325e8
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
Rather than calling map_dma on the allocations dynamically, this patch
switches to creating the sg_table at the time the buffer is created.
This is necessary because in future updates the sg_table will be used
for cache maintenance.
Change-Id: I49aac7c6d3a5afc440d18b917ae0e73be5d3f56d
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
These ops were added in the 3.4 kernel. This patch adds support
for them to ion. Previous ion_map/unmap_kernel api is also
retained in addition to this new api.
Change-Id: I6d2db284dce12c2d8cc4e540865beee2da43bd0c
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
With this change the ion_system_heap will only use kernel address
space when the memory is mapped into the kernel (rare case).
Change-Id: I8702cf89ffec0bd5c337bd88d7444013d4d94bc8
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
Ion now uses dma-buf file descriptors to share
buffers with userspace. Ion becomes a dma-buf
exporter and any driver that can import dma-bufs
can now import ion file descriptors.
Change-Id: Ia04d6d72fb301dc088eb8db6576822e9260ff332
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
1. Verifying if the size of memory allocation in ion_alloc() is aligned
by PAGE_SIZE at least. If it is not, this change makes the size to be
aligned by PAGE_SIZE.
2. Unmaps all mappings to the kernel and DMA address spaces when
destroying ion_buffer in ion_buffer_destroy(). This prevents leaks in
those virtual address spaces.
3. Makes the return value of ion_alloc() to be explicit Linux error code
when it fails to allocate a buffer.
4. Makes ion_alloc() implementation simpler. Removes 'goto' statement and
relavant call to ion_buffer_put().
5. Checks if the task is valid before calling put_task_struct() due
to failure on creating a ion client in ion_client_create().
6. Returns error when buffer allocation requested by userspace is failed.
Change-Id: I4fa9859f4a0b665fcb44e5c0da43c569732e93ae
Signed-off-by: KyongHo Cho <pullip.cho@samsung.com>
Rather than requiring each platform call memblock_remove or reserve
from the board file, add this to ion
Change-Id: Ie418a692c13e9e0cfe93ecc83d253d3ce860fc83
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
Switch these api's from scatterlists to sg_tables
Change-Id: I8b99e39633df009d472ce24704fa26af7bb50fa2
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
Remove the config from the configs list before releasing the spinlock.
Otherwise the other cpu might be processing a SET_CONFIGURATION that
will switch to the configuration that is being released.
Change-Id: Id4da0d0e18ead63e20cb236cd1d3e8e6d116acce
Signed-off-by: Benoit Goby <benoit@android.com>
On non-developer devices kgdb prevents CONFIG_PANIC_TIMEOUT from
rebooting the device after a panic. Add module parameters
debug_core.break_on_exception and debug_core.break_on_panic to
allow skipping debug on panics and exceptions respectively. Both
default to true to preserve existing behavior.
Change-Id: I75dce7263e96cee069a9750920cce83dc6f98e8c
Signed-off-by: Colin Cross <ccross@android.com>
Adds a new trace event to be called from clk_set_parent. Some
cpufreq drivers, including Tegra, reparent the cpu clock to a
slower clock while the main pll is relocking, tracing
clk_set_parent allows traces to show how for long the cpu is
running slower.
Uses a separate TRACE_EVENT instead of the clock event class to
allow the event to contain string names for the child and the
parent.
Signed-off-by: Colin Cross <ccross@android.com>
qtaguid tracks the device stats by monitoring when it goes up and down,
then it gets the dev_stats().
But devs don't correctly report stats (either they don't count headers
symmetrically between rx/tx, or they count internal control messages).
Now qtaguid counts the rx/tx bytes/packets during raw:prerouting and
mangle:postrouting (nat is not available in ipv6).
The results are in
/proc/net/xt_qtaguid/iface_stat_fmt
which outputs a format line (bash expansion):
ifname total_skb_{rx,tx}_{bytes,packets}
Added event counters for pre/post handling.
Added extra ctrl_*() pid/uid debugging.
Change-Id: Id84345d544ad1dd5f63e3842cab229e71d339297
Signed-off-by: JP Abgrall <jpa@google.com>
Send notifications when the label becomes active after an idle period.
Send netlink message notifications in addition to sysfs notifications.
Using a uevent with
subsystem=xt_idletimer
INTERFACE=...
STATE={active,inactive}
This is backport from common android-3.0
commit: beb914e987
with uevent support instead of a new netlink message type.
Change-Id: I31677ef00c94b5f82c8457e5bf9e5e584c23c523
Signed-off-by: Ashish Sharma <ashishsharma@google.com>
Signed-off-by: JP Abgrall <jpa@google.com>
This is required to pass the headers_check
Change-Id: Ic4c773973278cbdf1cb4eb66473826cb96ccbfb3
Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
Commit b641072 ("security: Add AID_NET_RAW and AID_NET_ADMIN capability
check in cap_capable().") introduces additional checks for AID_NET_xxx
macros. Since the header file including those macros are conditionally
included, the checks should also be conditionally executed.
Change-Id: Iaec5208d5b95a46b1ac3f2db8449c661e803fa5b
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
Allow speed to drop to flooor frequency but not below, don't pin
to speed at last boost.
Change-Id: I0147c2b7a2e61ba16820605af6baaf09570be787
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Allow speed drop after min_sample_time elapses from last time
the current speed was last re-validated as appropriate for
current load / input boost.
Allow speed bump after min_sample_time (or above_hispeed_delay)
elapses from the time the current speed was originally set.
Change-Id: Ic25687a7a53d25e6544c30c47d7ab6f27a47bee8
Signed-off-by: Todd Poynor <toddpoynor@google.com>
For systems that set a common speed for all CPUs, checking current
speed here could bypass the intermediate hispeed bump decision for
this CPU when another CPU was already at hispeed. This could
result in an overly high setting (for all CPUs) in situations
where all CPUs were about to drop to load levels that map to
hispeed or below.
Change-Id: I186f23dcfc5e2b6336cab8b0327f0c8a9a4482bc
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Apply min_sample_time to the last time the current target speed
was originally requested or re-validated as appropriate for the
current load, not to the time since the current speed was
originally set. Avoids periodic dips in speed during bursty
loads.
Change-Id: I250bda657985de60373f9897cc41f480664d51a1
Signed-off-by: Todd Poynor <toddpoynor@google.com>
If load is above go_hispeed_load, always go to at least hispeed_freq,
even when reducing speed from a higher speed, not just when jumping
up from minimum speed. Avoids running at a lower than intended
speed after a burst of even higher load.
Change-Id: I5b9d2a15ba25ce609b21bac7c724265cf6838dee
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Evaluate spikes in load (below go_hispeed_load) against the maximum
speed supported by the device, not the current speed (which tends to
make it too difficult to raise speed to intermediate levels until
very busy).
Change-Id: Ib937006abf8bedb60891a739acd733e89b732ae0
Signed-off-by: Todd Poynor <toddpoynor@google.com>
When updating the stats for a given uid it would incorrectly assume
IPV4 and pick up the wrong protocol when IPV6.
Change-Id: Iea4a635012b4123bf7aa93809011b7b2040bb3d5
Signed-off-by: JP Abgrall <jpa@google.com>
