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Fix/enhance THP integration.

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Detect whether chunks start off as THP-capable by default (according to
the state of /sys/kernel/mm/transparent_hugepage/enabled), and use this
as the basis for whether to call pages_nohuge() once per chunk during
first purge of any of the chunk's page runs.

Add the --disable-thp configure option, as well as the the opt.thp
mallctl.

This resolves #541.
This commit is contained in:
Jason Evans
2017-02-28 01:08:28 -08:00
parent 766ddcd0f2
commit d84d2909c3
13 changed files with 177 additions and 21 deletions
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2
test/unit/mallctl.c
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@@ -142,6 +142,7 @@ TEST_BEGIN(test_mallctl_config)
TEST_MALLCTL_CONFIG(prof_libunwind, bool);
TEST_MALLCTL_CONFIG(stats, bool);
TEST_MALLCTL_CONFIG(tcache, bool);
TEST_MALLCTL_CONFIG(thp, bool);
TEST_MALLCTL_CONFIG(tls, bool);
TEST_MALLCTL_CONFIG(utrace, bool);
TEST_MALLCTL_CONFIG(valgrind, bool);
@@ -182,6 +183,7 @@ TEST_BEGIN(test_mallctl_opt)
TEST_MALLCTL_OPT(bool, xmalloc, xmalloc);
TEST_MALLCTL_OPT(bool, tcache, tcache);
TEST_MALLCTL_OPT(size_t, lg_tcache_max, tcache);
TEST_MALLCTL_OPT(bool, thp, thp);
TEST_MALLCTL_OPT(bool, prof, prof);
TEST_MALLCTL_OPT(const char *, prof_prefix, prof);
TEST_MALLCTL_OPT(bool, prof_active, prof);