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HPA: Tie components into a PAI implementation.

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This commit is contained in:
David Goldblatt
2020-08-14 13:36:41 -07:00
committed by David Goldblatt
parent c8209150f9
commit 1c7da33317
25 changed files with 972 additions and 11 deletions
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42
src/jemalloc.c
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@@ -133,6 +133,10 @@ unsigned ncpus;
/* Protects arenas initialization. */
malloc_mutex_t arenas_lock;
/* The global hpa, and whether it's on. */
bool opt_hpa = false;
/*
* Arenas that are used to service external requests. Not all elements of the
* arenas array are necessarily used; arenas are created lazily as needed.
@@ -1476,6 +1480,7 @@ malloc_conf_init_helper(sc_data_t *sc_data, unsigned bin_shard_sizes[SC_NBINS],
opt_max_background_threads,
CONF_CHECK_MIN, CONF_CHECK_MAX,
true);
CONF_HANDLE_BOOL(opt_hpa, "hpa")
if (CONF_MATCH("slab_sizes")) {
if (CONF_MATCH_VALUE("default")) {
sc_data_init(sc_data);
@@ -1760,6 +1765,33 @@ malloc_init_hard_a0_locked() {
return true;
}
a0 = arena_get(TSDN_NULL, 0, false);
if (opt_hpa && LG_SIZEOF_PTR == 2) {
if (opt_abort_conf) {
malloc_printf("<jemalloc>: Hugepages not currently "
"supported on 32-bit architectures; aborting.");
} else {
malloc_printf("<jemalloc>: Hugepages not currently "
"supported on 32-bit architectures; disabling.");
opt_hpa = false;
}
} else if (opt_hpa) {
/*
* The global HPA uses the edata cache from a0, and so needs to
* be initialized specially, after a0 is. The arena init code
* handles this case specially, and does not turn on the HPA for
* a0 when opt_hpa is true. This lets us do global HPA
* initialization against a valid a0.
*/
if (hpa_init(&arena_hpa_global, b0get(), &arena_emap_global,
&a0->pa_shard.edata_cache)) {
return true;
}
if (pa_shard_enable_hpa(&a0->pa_shard, &arena_hpa_global)) {
return true;
}
}
malloc_init_state = malloc_init_a0_initialized;
return false;
@@ -4206,6 +4238,10 @@ _malloc_prefork(void)
}
}
}
if (i == 3 && opt_hpa) {
hpa_prefork3(tsd_tsdn(tsd), &arena_hpa_global);
}
}
prof_prefork1(tsd_tsdn(tsd));
stats_prefork(tsd_tsdn(tsd));
@@ -4244,6 +4280,9 @@ _malloc_postfork(void)
arena_postfork_parent(tsd_tsdn(tsd), arena);
}
}
if (opt_hpa) {
hpa_postfork_parent(tsd_tsdn(tsd), &arena_hpa_global);
}
prof_postfork_parent(tsd_tsdn(tsd));
if (have_background_thread) {
background_thread_postfork_parent(tsd_tsdn(tsd));
@@ -4274,6 +4313,9 @@ jemalloc_postfork_child(void) {
arena_postfork_child(tsd_tsdn(tsd), arena);
}
}
if (opt_hpa) {
hpa_postfork_child(tsd_tsdn(tsd), &arena_hpa_global);
}
prof_postfork_child(tsd_tsdn(tsd));
if (have_background_thread) {
background_thread_postfork_child(tsd_tsdn(tsd));