Add support to allocate/reserve a virtual address range without
physically backing. Add support to allocate physically backing memory
without assigning it a virtual address. Add support to unite
the two forementioned allocations together. Add support to
divorce them from one another. Add support to let their kids
do cache operations as they see fit.
Create a 'dummy' page that is used to back virtual allocations
that are not yet backed by physical memory.
CRs-Fixed: 1046456
Change-Id: Ifaa687b036eeab22ab4cf0238abdfbe7b2311ed3
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
Memory barrier is required after the reset is asserted and de-asserted, so
add the same.
Change-Id: I17532984f546be97ba9862c07dd694b3fdd592fb
Signed-off-by: Taniya Das <tdas@codeaurora.org>
In soundwire read/write commands, register value is defined
as 8 bit but it is accessed through 32 bit pointer which
may cause out of boundary memory access. Fix this issue by
typecast appropriately.
BUG: KASan: out of bounds access in swrm_read+0x1dc/0x30c at
addr ffffffc089871880
Write of size 4 by task kworker/u8:5/236
==addr ffffffc089871880
[<ffffffc00081d174>] swrm_read+0x1d8/0x30c
[<ffffffc000819808>] swr_read+0x5c/0x74
[<ffffffc000741e58>] regmap_swr_read+0xd8/0x11c
[<ffffffc00073a350>] _regmap_raw_read+0x210/0x314
[<ffffffc00073a4b0>] _regmap_bus_read+0x5c/0xb4
[<ffffffc000739548>] _regmap_read+0xe0/0x1ec
[<ffffffc0007396b8>] regmap_read+0x64/0xa8
[<ffffffc000dc9dd4>] snd_soc_component_read+0x34/0x70
[<ffffffc000dc9f44>] snd_soc_read+0x6c/0x94
Memory state around the buggy address:
ffffffc089871780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffffffc089871800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Change-Id: I3c56dffb4ca197e8fc23d54a44282a60254dd001
Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>
Use the exclude_idle attribute of the perf events to avoid reading
PMUs of idle CPUs. The counter values are updated when CPU enters
idle and the saved value is returned when the idle CPU is queried
for that event provided the attribute is set in the perf_event.
Change-Id: I61f7a7474856abf67ac6dfd9e531702072e108a5
Signed-off-by: Patrick Fay <pfay@codeaurora.org>
Current code doesn't restart perf after hotplug and power collapse
which makes monitoring in low power modes difficult. This patch adds
support for the hotplug notifier events and creates a common path for
the power collapse and hotplug events.
Change-Id: I52e6978b1c104fd78bc42e4600ceb111b47b3e11
Signed-off-by: Patrick Fay <pfay@codeaurora.org>
Allocating new secure pages has very high latency. Ensure that the page
pool is completely empty before allocating new pages, splitting large order
pages as required.
Change-Id: I1353c5d9bdfd5c525c0c781c524630577c84b95e
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
Using GFP_COMP to create compound pages prevents split_pages from being
used to split an order > 0 page into order 0 pages.
Required for future changes to the system_heap allocation algorithm.
Change-Id: I5ab82f717bb003e074124e1ffae3f112c405bc2b
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
