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Pre-map file mappings from /dev/shm (--mpol-shm-premap mcexec argument)

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This commit is contained in:
Balazs Gerofi
2017-03-12 14:34:34 +09:00
parent c5079898c2
commit 9b5ccb5a33
8 changed files with 157 additions and 7 deletions
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6
executer/kernel/mcctrl/syscall.c
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@@ -770,6 +770,7 @@ enum {
MF_ZEROFILL = 0x0010,
MF_REG_FILE = 0x1000,
MF_DEV_FILE = 0x2000,
MF_PREMAP = 0x8000,
MF_END
};
@@ -863,9 +864,8 @@ static int pager_req_create(ihk_os_t os, int fd, uintptr_t result_pa)
fullpath = d_path(&file->f_path, pathbuf, PATH_MAX);
if (!IS_ERR(fullpath)) {
if (!strncmp("/dev/shm/Intel_MPI", fullpath, 18)) {
//mf_flags = (MF_PREFETCH | MF_ZEROFILL);
mf_flags = (MF_ZEROFILL);
dprintk("%s: filename: %s, zerofill\n",
mf_flags = (MF_PREMAP | MF_ZEROFILL);
dprintk("%s: filename: %s, premap & zerofill\n",
__FUNCTION__, fullpath);
}
else if (strstr(fullpath, "libmpi") != NULL) {