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| author | Ben Gamari <bgamari.foss@gmail.com> | 2016-12-01 12:55:23 -0500 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2016-12-01 12:56:25 -0500 |
| commit | 6576bf83cdf4eac05eb88a24aa934a736c91e3da (patch) | |
| tree | ccbe11eb38c070e0d78af4153ba2fc93220f26ce /compiler/main | |
| parent | 7214e924ca690946288ccf681ef652cee3cb114c (diff) | |
| download | haskell-6576bf83cdf4eac05eb88a24aa934a736c91e3da.tar.gz | |
rts: Ensure we always give MADV_DONTNEED a chance in osDecommitMemory
As described in #12865, newer Linux kernels support both MADV_FREE and
MADV_DONTNEED. Previously a runtime would fail to try MADV_DONTNEED if
MADV_FREE failed (e.g. since the kernel which the image is running on
doesn't support the latter). Now we try MADV_DONTNEED if MADV_FREE
failed to ensure that binaries compiled on a kernel supporting MADV_FREE
don't fail on decommit.
Test Plan: Validate
Reviewers: austin, erikd, simonmar
Reviewed By: simonmar
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2780
GHC Trac Issues: #12865
Diffstat (limited to 'compiler/main')
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