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New configure option '--enable-pageid' for Linux

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The option makes jemalloc use prctl with PR_SET_VMA to tag memory mappings with
"jemalloc_pg" or "jemalloc_pg_overcommit". This allows to easily identify
jemalloc's mappings in /proc/<pid>/maps. PR_SET_VMA is only available in Linux
5.17 and above.
This commit is contained in:
David Carlier 2022-06-01 22:04:11 +01:00 • committed by Alex Lapenkou
parent b950934916
commit 4fc5c4fbac
3 changed files with 59 additions and 0 deletions
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6
include/jemalloc/internal/jemalloc_internal_defs.h.in
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@ -162,6 +162,12 @@
/* Use gcc intrinsics for profile backtracing if defined. */
#undef JEMALLOC_PROF_GCC
/* JEMALLOC_PAGEID enabled page id */
#undef JEMALLOC_PAGEID
/* JEMALLOC_HAVE_PRCTL checks prctl */
#undef JEMALLOC_HAVE_PRCTL
/*
* JEMALLOC_DSS enables use of sbrk(2) to allocate extents from the data storage
* segment (DSS).