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android_system_core/libmeminfo
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Christopher Ferris 504d2cce64 Optimize code that only uses PageMap call. 
Some code only wants to use PageMap to determine whether pages are
mapped in to memory. Modify the code to optimize this path.

Changes:
- Add a function that doesn't read all of usage stats data for every
  map. This operation is extremely expensive, and some code doesn't
  care about it.
- Optimize the PageMap call to do a single read instead of a single
  read per page.
- Add unit tests for these changes.

Bug: 136245508

Test: Ran new unit tests.
Test: Ran procrank and verified data looks good.
Test: Ran DexDiag art tests.
Change-Id: I37d03f2584551d26cb20be3abacdb958111d4eca
2019-07-12 16:28:09 -07:00
..
include/meminfo Optimize code that only uses PageMap call. 2019-07-12 16:28:09 -07:00
libdmabufinfo dmabuf_dump: Change the default view to per-process stats 2019-06-28 14:05:42 +08:00
testdata1 meminfo: Add Smaps(), showmap and friends. 2019-01-08 17:08:10 -08:00
testdata2 libmeminfo: Add support to read zram memory consumption 2018-12-04 15:59:39 -08:00
tools Cache only a small portion of page map data. 2019-06-25 21:14:36 -07:00
vts Don't abort the build if a repo doesn't have the test/vts/tools/build/. 2019-02-08 08:47:12 +00:00
.clang-format libmeminfo: Add libmeminfo to gather global and per-process memory stats 2018-11-05 10:42:46 -08:00
Android.bp meminfo: Remove libpagemap dependency 2019-01-28 15:05:52 -08:00
libmeminfo_benchmark.cpp meminfo: Pull ReadVmallocInfo() out of the SysMemInfo class. 2019-01-22 14:06:01 -08:00
libmeminfo_test.cpp Optimize code that only uses PageMap call. 2019-07-12 16:28:09 -07:00
meminfo_private.h libmeminfo: Add libmeminfo to gather global and per-process memory stats 2018-11-05 10:42:46 -08:00
OWNERS Add OWNERS file 2018-12-07 09:29:03 -08:00
pageacct.cpp Cache only a small portion of page map data. 2019-06-25 21:14:36 -07:00
procmeminfo.cpp Optimize code that only uses PageMap call. 2019-07-12 16:28:09 -07:00
sysmeminfo.cpp meminfo: Pull ReadVmallocInfo() out of the SysMemInfo class. 2019-01-22 14:06:01 -08:00