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Add huge page configuration and pages_[no}huge().

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Add the --with-lg-hugepage configure option, but automatically configure
LG_HUGEPAGE even if it isn't specified.

Add the pages_[no]huge() functions, which toggle huge page state via
madvise(..., MADV_[NO]HUGEPAGE) calls.
This commit is contained in:
Jason Evans
2016-11-17 13:36:17 -08:00
parent eab3b180e5
commit c1baa0a9b7
9 changed files with 141 additions and 6 deletions
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13
include/jemalloc/internal/jemalloc_internal_defs.h.in
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@@ -187,6 +187,13 @@
/* One page is 2^LG_PAGE bytes. */
#undef LG_PAGE
/*
* One huge page is 2^LG_HUGEPAGE bytes. Note that this is defined even if the
* system does not explicitly support huge pages; system calls that require
* explicit huge page support are separately configured.
*/
#undef LG_HUGEPAGE
/*
* If defined, adjacent virtual memory mappings with identical attributes
* automatically coalesce, and they fragment when changes are made to subranges.
@@ -262,6 +269,12 @@
#undef JEMALLOC_PURGE_MADVISE_FREE
#undef JEMALLOC_PURGE_MADVISE_DONTNEED
/*
* Defined if transparent huge pages are supported via the MADV_[NO]HUGEPAGE
* arguments to madvise(2).
*/
#undef JEMALLOC_THP
/* Define if operating system has alloca.h header. */
#undef JEMALLOC_HAS_ALLOCA_H