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pmap: Prefer consistent naming for loader tunable

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The sysctl knob 'vm.pmap.pv_entry_max' becomes a loader tunable since
7ff48af704 (Allow a specific setting for pv entries) but is fetched
from system environment 'vm.pmap.pv_entries'. That is inconsistent and
obscure.

This reverts 36e1b9702e (Correct the tunable name in the message).

PR:		231577
Reviewed by:	jhibbits, alc, kib
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D42274

(cherry picked from commit 02320f64209563e35fa371fc5eac94067f688f7f)
This commit is contained in:
Zhenlei Huang 2023-10-20 01:00:31 +08:00
parent d8aaf09792
commit e53f8ca323
3 changed files with 5 additions and 5 deletions
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4
sys/arm/arm/pmap-v6.c
View file

@ -1750,7 +1750,7 @@ pmap_init(void)
*/
TUNABLE_INT_FETCH("vm.pmap.shpgperproc", &shpgperproc);
pv_entry_max = shpgperproc * maxproc + vm_cnt.v_page_count;
TUNABLE_INT_FETCH("vm.pmap.pv_entries", &pv_entry_max);
TUNABLE_INT_FETCH("vm.pmap.pv_entry_max", &pv_entry_max);
pv_entry_max = roundup(pv_entry_max, _NPCPV);
pv_entry_high_water = 9 * (pv_entry_max / 10);
@ -3012,7 +3012,7 @@ get_pv_entry(pmap_t pmap, boolean_t try)
if (ratecheck(&lastprint, &printinterval))
printf("Approaching the limit on PV entries, consider "
"increasing either the vm.pmap.shpgperproc or the "
"vm.pmap.pv_entries tunable.\n");
"vm.pmap.pv_entry_max tunable.\n");
retry:
pc = TAILQ_FIRST(&pmap->pm_pvchunk);
if (pc != NULL) {

4
sys/i386/i386/pmap.c
View file

@ -1006,7 +1006,7 @@ __CONCAT(PMTYPE, init)(void)
*/
TUNABLE_INT_FETCH("vm.pmap.shpgperproc", &shpgperproc);
pv_entry_max = shpgperproc * maxproc + vm_cnt.v_page_count;
TUNABLE_INT_FETCH("vm.pmap.pv_entries", &pv_entry_max);
TUNABLE_INT_FETCH("vm.pmap.pv_entry_max", &pv_entry_max);
pv_entry_max = roundup(pv_entry_max, _NPCPV);
pv_entry_high_water = 9 * (pv_entry_max / 10);
@ -2515,7 +2515,7 @@ get_pv_entry(pmap_t pmap, boolean_t try)
if (ratecheck(&lastprint, &printinterval))
printf("Approaching the limit on PV entries, consider "
"increasing either the vm.pmap.shpgperproc or the "
"vm.pmap.pv_entries tunable.\n");
"vm.pmap.pv_entry_max tunable.\n");
retry:
pc = TAILQ_FIRST(&pmap->pm_pvchunk);
if (pc != NULL) {

2
sys/powerpc/booke/pmap.c
View file

@ -1069,7 +1069,7 @@ mmu_booke_init(void)
TUNABLE_INT_FETCH("vm.pmap.shpgperproc", &shpgperproc);
pv_entry_max = shpgperproc * maxproc + vm_cnt.v_page_count;
TUNABLE_INT_FETCH("vm.pmap.pv_entries", &pv_entry_max);
TUNABLE_INT_FETCH("vm.pmap.pv_entry_max", &pv_entry_max);
pv_entry_high_water = 9 * (pv_entry_max / 10);
uma_zone_reserve_kva(pvzone, pv_entry_max);