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brk(): make aggressive heap extension optional

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This commit is contained in:
Balazs Gerofi
2017-05-24 01:41:11 +09:00
parent 9f55263528
commit 0c3b705f98
2 changed files with 14 additions and 4 deletions
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2
executer/user/mcexec.c
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@ -161,7 +161,7 @@ static int mpol_no_bss = 0;
static int mpol_shm_premap = 0;
static int no_bind_ikc_map = 0;
static unsigned long mpol_threshold = 0;
static unsigned long heap_extension = (2*1024*1024);
static unsigned long heap_extension = (4*1024);
static int profile = 0;
static int disable_sched_yield = 0;

16
kernel/process.c
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@ -2067,8 +2067,15 @@ unsigned long extend_process_region(struct process_vm *vm,
void *p;
int rc;
size_t align_size = vm->proc->heap_extension > PAGE_SIZE ?
LARGE_PAGE_SIZE : PAGE_SIZE;
unsigned long align_mask = vm->proc->heap_extension > PAGE_SIZE ?
LARGE_PAGE_MASK : PAGE_MASK;
unsigned long align_p2align = vm->proc->heap_extension > PAGE_SHIFT ?
LARGE_PAGE_P2ALIGN : PAGE_P2ALIGN;
new_end_allocated = (address + vm->proc->heap_extension +
(LARGE_PAGE_SIZE - 1)) & LARGE_PAGE_MASK;
(align_size - 1)) & align_mask;
if (flag & VR_DEMAND_PAGING) {
p = 0;
@ -2076,7 +2083,7 @@ unsigned long extend_process_region(struct process_vm *vm,
else {
p = ihk_mc_alloc_aligned_pages(
(new_end_allocated - end_allocated) >> PAGE_SHIFT,
LARGE_PAGE_P2ALIGN, IHK_MC_AP_NOWAIT |
align_p2align, IHK_MC_AP_NOWAIT |
(!(vm->proc->mpol_flags & MPOL_NO_HEAP) ? IHK_MC_AP_USER : 0));
if (!p) {
@ -2086,11 +2093,14 @@ unsigned long extend_process_region(struct process_vm *vm,
if ((rc = add_process_memory_range(vm, end_allocated, new_end_allocated,
(p == 0 ? 0 : virt_to_phys(p)), flag, NULL, 0,
LARGE_PAGE_P2ALIGN, NULL)) != 0) {
align_p2align, NULL)) != 0) {
ihk_mc_free_pages(p, (new_end_allocated - end_allocated) >> PAGE_SHIFT);
return end_allocated;
}
dkprintf("%s: new_end_allocated: 0x%lu, align_size: %lu, align_mask: %lx\n",
__FUNCTION__, new_end_allocated, align_size, align_mask);
#ifdef ENABLE_RUSAGE
{
int processor_id;