| 4c7735ac0173b71aceb489470fca15b56e64c4d4 |
|
25-Jan-2018 |
Hridya Valsaraju <hridya@google.com> |
Add capability to verify application of multiple overlays
Bug: 67779848
Test: sh apply_verify_multiple_overlay.sh
Change-Id: I022a9b222161c279cfb7ba8546d465b478786d9c
/system/libufdt/ufdt_overlay.c
|
| c0957f2fa7c1b47b61044b3af3d7d82ca44e0680 |
|
30-Jan-2018 |
Hridya Valsaraju <hridya@google.com> |
Refactor code to find overlay target
Test: mm
Bug: 67779848
Change-Id: Iec654609d12e1925076ff65aafb94bf6bdf4775d
/system/libufdt/ufdt_overlay.c
|
| 5168cab4cb068dc964e6354167bc857a0e948ff7 |
|
06-Dec-2017 |
Hridya Valsaraju <hridya@google.com> |
Create libufdt_verify
Exposes an API to verify if a device tree overlay has been correctly
applied on an FDT.
Bug: 67779848
Test: vts-tradefed run vts -m VtsVerifyDTBOTest
Change-Id: I0606fd79784b8beed1d912129dfbc9b7634e7708
/system/libufdt/ufdt_overlay.c
|
| d62a849ab43430326c33d3e004a42e9b34080731 |
|
24-Apr-2017 |
SzuWei Lin <szuweilin@google.com> |
libufdt: reduce the number of malloc/free calling
The performance of some bootloader malloc/free implementation isn't
optimized, but libufdt calls huge number of malloc/free to build a
real tree data structure.
The patch adds an ufdt_node_pool to reduce the number of malloc/free.
ufdt_node_pool asks a larger memory block in each time, and
distributes the memory into several ufdt_node (ufdt_node_fdt_prop
or ufdt_node_fdt_node). libufdt doesn't need to call malloc()
to allocate memory until out of larger memory block.
The setting of this patch is 1024 nodes in each memory block,
so it can reduce ~1023/1024 malloc/free calling times after the patch
is applied.
Bug: 32969430
Test: ./tests/run_tests.sh
Test: ./tests/run_performance_test.sh
Change-Id: Id95e74da1235b9e2fc306500686515ee6b93017d
/system/libufdt/ufdt_overlay.c
|
| a3326ade5d90a747b549a209519331816243d800 |
|
20-Apr-2017 |
Chris Fries <cfries@google.com> |
libufdt: avoid to strdup() if possible
Memory allocation is slow in some platform. Uses stack to avoid
malloc/free if possible.
Also removed dto_strdup(). Doesn't need to implement it anymore.
Bug: 32969430
Test: ./tests/run_tests.sh
Change-Id: I68eae8fcf05e722089879ba3e95c55b136bb31ed
/system/libufdt/ufdt_overlay.c
|
| e78aa56232a888c30b5de559797578eac6bc1663 |
|
17-Apr-2017 |
SzuWei Lin <szuweilin@google.com> |
Correct code placement for different license
Previous code revising moved some code into a file with different license.
Fix it in this patch.
Test: ./tests/run_tests.sh
Change-Id: Ie50000bba7a6bf8d9d65dcc1a1cf21135ac3b97a
/system/libufdt/ufdt_overlay.c
|
| 8a7039c218527bfc25a2831f480a9558e64f84e5 |
|
14-Apr-2017 |
SzuWei Lin <szuweilin@google.com> |
Code revise
- Remove unused code
- Remove internel functions from header file
- Fix typos
- Revise all function names with prefix ufdt_*
Test: ./tests/run_tests.sh
Change-Id: I4f89e90eb983540e78aadb092c07de62d219e454
/system/libufdt/ufdt_overlay.c
|
| 1be68ae53e645de1b2ec26140b302fbfcbbb919f |
|
30-Mar-2017 |
SzuWei Lin <szuweilin@google.com> |
Avoid to re-generate string table from ufdt to fdt
String table contains the strings of all property name in a fdt.
The ufdt_apply_overlay() converts two dtbs from fdt to ufdt,
overlays, and converts merged ufdt to fdt. These operations
shouldn't create new peroperty names, so we can just re-use the
string tables in original dtbs, and just copy them into merged
fdt. This solution can enhance a lot of performance for device
tree overlaying.
To avoid the error that some users could use string offset in
string table, the solution also give a same string offset for
the name properties by ufdt_prop_dict;
Futher, the patch also removed unused header files after
changing algorithm.
Bug: 35255584
Test: ./tests/run_tests.sh
Change-Id: Id422730115531bd20d21117285291bdd860915ff
/system/libufdt/ufdt_overlay.c
|
| 70107c8f5c65bc9798d8f6b7f5b580997d0aca19 |
|
07-Apr-2017 |
SzuWei Lin <szuweilin@google.com> |
Fix memory and file leak
Bug: 35652061
Test: valgrind --leak-check=yes --show-reachable=yes ufdt_apply_overlay ...
and result no leak
Change-Id: Iec0fe77468d2fdf6c692209cd9571c02f96e2e44
/system/libufdt/ufdt_overlay.c
|
| fba5805ed826ca556434911f67cd7a0aed987990 |
|
20-Mar-2017 |
SzuWei Lin <szuweilin@google.com> |
Handle overlaying without node __symbols__
In new version of dtc, it does not always generate __symbols__ node:
https://github.com/dgibson/dtc/commit/e3c769aa9c16e7b94051c5eaae6635e79ac19385
Revises libufdt to handle main DT without node __symbols__.
Bug: 35230516
Test: tests/run_tests.sh
Change-Id: Ie086abc93ed4d45e4fe28c1d8c48fd37873256c1
/system/libufdt/ufdt_overlay.c
|
| f6c209b3f409f879305ac9837524b9d34c850de6 |
|
27-Nov-2016 |
Li Chen <akaineko@google.com> |
libufdt: device tree overlay via unflattening FDT
The original version of libdtoverlay is slow in searching for
particular nodes and adding subnodes/properties due to the operations
on flattened device tree (FDT).
`libufdt` builds a real tree structure (named ufdt -- unflattned
device tree) from FDT. In the real tree, we can perform certain
operations (e.g., merge 2 subtrees, search for a node by path) in
almost optimal time complexity with acceptable additional memory usage.
With libufdt, we improve the merging of two dtb files from O(N^2) to
O(N), where N is the number of nodes in the tree.
Bug: 30800619
Test: run test scripts (see libufdt/tests/README)
Test: manually ported libufdt into a bootloader,
checked it can merge a base dtb and a dtbo to generate a final dtb
to boot the device
Change-Id: I1ff886bb8a62bad1451edcd7c4fe5cb48b7a034a
/system/libufdt/ufdt_overlay.c
|
| eeaff8f66f44518a0e776957c6e0921f7799ace2 |
|
14-Dec-2016 |
Jeff Hao <jeffhao@google.com> |
Revert "libufdt: device tree overlay via unflattening FDT"
This reverts commit 3084ce7cbdff84093286459758f99c15082e6556.
Change-Id: I36f8252ea77c75301711009180c1908bb18e231c
/system/libufdt/ufdt_overlay.c
|
| 3084ce7cbdff84093286459758f99c15082e6556 |
|
27-Nov-2016 |
LiChen <akaineko@google.com> |
libufdt: device tree overlay via unflattening FDT
The original version of libdtoverlay is slow in searching for
particular nodes and adding subnodes/properties due to the operations
on flattened device tree (FDT).
`libufdt` builds a real tree structure (named ufdt -- unflattned
device tree) from FDT. In the real tree, we can perform certain
operations (e.g., merge 2 subtrees, search for a node by path) in
almost optimal time complexity with acceptable additional memory usage.
With libufdt, we improve the merging of two dtb files from O(N^2) to
O(N), where N is the number of nodes in the tree.
Bug: 30800619
Test: run test scripts (see libufdt/tests/README)
Test: manually ported libufdt into a bootloader,
checked it can merge a base dtb and a dtbo to generate a final dtb
to boot the device
Change-Id: I6a282cc99129d5280ecbf40852723f83735fa523
/system/libufdt/ufdt_overlay.c
|