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HPA: make the hugification threshold configurable.

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This commit is contained in:
David Goldblatt 2020-12-09 13:52:29 -08:00 • committed by David Goldblatt
parent b3df80bc79
commit 4790db15ed
5 changed files with 42 additions and 4 deletions
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23
src/jemalloc.c
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@ -1414,6 +1414,29 @@ malloc_conf_init_helper(sc_data_t *sc_data, unsigned bin_shard_sizes[SC_NBINS],
"hpa_slab_max_alloc", PAGE, HUGEPAGE,
CONF_CHECK_MIN, CONF_CHECK_MAX, true);
/*
* Accept either a ratio-based or an exact hugification
* threshold.
*/
CONF_HANDLE_SIZE_T(opt_hpa_opts.hugification_threshold,
"hpa_hugification_threshold", PAGE, HUGEPAGE,
CONF_CHECK_MIN, CONF_CHECK_MAX, true);
if (CONF_MATCH("hpa_hugification_threshold_ratio")) {
fxp_t ratio;
char *end;
bool err = fxp_parse(&ratio, v,
&end);
if (err || (size_t)(end - v) != vlen
|| ratio > FXP_INIT_INT(1)) {
CONF_ERROR("Invalid conf value",
k, klen, v, vlen);
} else {
opt_hpa_opts.hugification_threshold =
fxp_mul_frac(HUGEPAGE, ratio);
}
CONF_CONTINUE;
}
CONF_HANDLE_SIZE_T(opt_hpa_sec_max_alloc, "hpa_sec_max_alloc",
PAGE, 0, CONF_CHECK_MIN, CONF_DONT_CHECK_MAX, true);
CONF_HANDLE_SIZE_T(opt_hpa_sec_max_bytes, "hpa_sec_max_bytes",