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| author | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2019-01-19 01:54:09 +0000 |
|---|---|---|
| committer | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2019-01-19 01:54:09 +0000 |
| commit | 0d4828a7d55c772d603c352e89f49d68268b121c (patch) | |
| tree | 1b87554e3cbde0c55a06fb935501215d0c69734c /lib/fuzzer/FuzzerExtFunctionsWindows.cpp | |
| parent | f5da626c6271ca51f2117be03ce697de26d650bf (diff) | |
| download | compiler-rt-0d4828a7d55c772d603c352e89f49d68268b121c.tar.gz | |
[hwasan] Madvise away unused shadow.
Summary:
Whenever a large shadow region is tagged to zero, madvise(DONT_NEED)
as much of it as possible.
This reduces shadow RSS on Android by 45% or so, and total memory use
by 2-4%, probably even more on long running multithreaded programs.
CPU time seems to be in the noise.
Reviewers: kcc, pcc
Subscribers: srhines, kubamracek, llvm-commits
Differential Revision: https://reviews.llvm.org/D56757
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@351620 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/fuzzer/FuzzerExtFunctionsWindows.cpp')
0 files changed, 0 insertions, 0 deletions