gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

TO RESET: hugefileobj: pre-allocate on mmap

Browse Source 
Set this change to "TO RESET" because one of the Fujitsu tests fails.

Change-Id: Iddc30e8452b3d39da4975079d0c6a035e4f3dbde
This commit is contained in:
Masamichi Takagi
2020-06-15 13:23:52 +09:00
parent 191e6f7499
commit ed923ac82f
1 changed files with 28 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
kernel/hugefileobj.c
View File

@ -281,6 +281,34 @@ int hugefileobj_create(struct memobj *memobj, size_t len, off_t off,
virt_addr, virt_addr,
nr_pages, nr_pages,
obj->pgsize); obj->pgsize);
#ifdef ENABLE_FUGAKU_HACKS
{
int pgind;
int npages;
for (pgind = 0; pgind < obj->nr_pages; ++pgind) {
if (obj->pages[pgind]) {
continue;
}
npages = obj->pgsize >> PAGE_SHIFT;
obj->pages[pgind] = ihk_mc_alloc_aligned_pages_user(npages,
obj->pgshift - PTL1_SHIFT,
IHK_MC_AP_NOWAIT | IHK_MC_AP_USER, 0);
if (!obj->pages[pgind]) {
kprintf("%s: error: could not allocate page for off: %lu"
", page size: %lu\n", __func__, off, obj->pgsize);
continue;
}
memset(obj->pages[pgind], 0, obj->pgsize);
dkprintf("%s: obj: 0x%lx, pre-allocated page for off: %lu"
" (ind: %d), page size: %lu\n",
__func__, obj, off, pgind, obj->pgsize);
}
}
#endif
} }
obj->memobj.size = len; obj->memobj.size = len;