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BSS/data: demand paging for non-file section and respect user requested NUMA allocation policy

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This commit is contained in:
Balazs Gerofi
2017-01-21 18:45:44 +09:00
parent fdbdcbd0ee
commit afb7cb3a1e
4 changed files with 52 additions and 42 deletions
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13
kernel/process.c
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@ -1910,7 +1910,7 @@ int init_process_stack(struct thread *thread, struct program_load_desc *pn,
unsigned long minsz;
unsigned long at_rand;
struct process *proc = thread->proc;
unsigned long __flag;
unsigned long ap_flag;
/* Create stack range */
end = STACK_TOP(&thread->vm->region) & LARGE_PAGE_MASK;
@ -1925,13 +1925,14 @@ int init_process_stack(struct thread *thread, struct program_load_desc *pn,
}
start = (end - size) & LARGE_PAGE_MASK;
/* Put large stacks in user requested region */
__flag = (size >= (2 * 1024 * 1024)) ? IHK_MC_AP_USER : 0;
/* Apply user allocation policy to stacks */
/* TODO: make threshold kernel or mcexec argument */
ap_flag = (size >= AP_USER_THRESHOLD) ? IHK_MC_AP_USER : 0;
dkprintf("%s: size: %lu %s\n", __FUNCTION__, size,
__flag ? "(IHK_MC_AP_USER)" : "");
ap_flag ? "(IHK_MC_AP_USER)" : "");
stack = ihk_mc_alloc_aligned_pages(minsz >> PAGE_SHIFT,
LARGE_PAGE_P2ALIGN, IHK_MC_AP_NOWAIT | __flag);
LARGE_PAGE_P2ALIGN, IHK_MC_AP_NOWAIT | ap_flag);
if (!stack) {
kprintf("%s: error: couldn't allocate initial stack\n",
@ -1942,7 +1943,7 @@ int init_process_stack(struct thread *thread, struct program_load_desc *pn,
memset(stack, 0, minsz);
vrflag = VR_STACK | VR_DEMAND_PAGING;
vrflag |= (__flag ? VR_AP_USER : 0);
vrflag |= (ap_flag ? VR_AP_USER : 0);
vrflag |= PROT_TO_VR_FLAG(pn->stack_prot);
vrflag |= VR_MAXPROT_READ | VR_MAXPROT_WRITE | VR_MAXPROT_EXEC;
#define NOPHYS ((uintptr_t)-1)