static const char *
get_hugepage_dir(uint64_t hugepage_sz)
{
enum proc_mount_fieldnames {
DEVICE = 0,
MOUNTPT,
FSTYPE,
OPTIONS,
_FIELDNAME_MAX
};
static uint64_t default_size = 0;
const char proc_mounts[] = "/proc/mounts";
const char hugetlbfs_str[] = "hugetlbfs";
const size_t htlbfs_str_len = sizeof(hugetlbfs_str) - 1;
const char pagesize_opt[] = "pagesize=";
const size_t pagesize_opt_len = sizeof(pagesize_opt) - 1;
const char split_tok = ' ';
char *splitstr[_FIELDNAME_MAX];
char buf[BUFSIZ];
char *retval = NULL;
FILE *fd = fopen(proc_mounts, "r");
if (fd == NULL)
rte_panic("Cannot open %s\n", proc_mounts);
if (default_size == 0)
default_size = get_default_hp_size();
while (fgets(buf, sizeof(buf), fd)){
if (rte_strsplit(buf, sizeof(buf), splitstr, _FIELDNAME_MAX,
split_tok) != _FIELDNAME_MAX) {
RTE_LOG(ERR, EAL, "Error parsing %s\n", proc_mounts);
break; /* return NULL */
}
/* we have a specified --huge-dir option, only examine that dir */
if (internal_config.hugepage_dir != NULL &&
strcmp(splitstr[MOUNTPT], internal_config.hugepage_dir) != 0)
continue;
if (strncmp(splitstr[FSTYPE], hugetlbfs_str, htlbfs_str_len) == 0){
const char *pagesz_str = strstr(splitstr[OPTIONS], pagesize_opt);
/* if no explicit page size, the default page size is compared */
if (pagesz_str == NULL){
if (hugepage_sz == default_size){
retval = strdup(splitstr[MOUNTPT]);
break;
}
}
/* there is an explicit page size, so check it */
else {
uint64_t pagesz = rte_str_to_size(&pagesz_str[pagesize_opt_len]);
if (pagesz == hugepage_sz) {
retval = strdup(splitstr[MOUNTPT]);
break;
}
}
} /* end if strncmp hugetlbfs */
} /* end while fgets */
fclose(fd);
return retval;
}
static const char *get_hugepage_dir(uint64_t hugepage_sz)
{
enum proc_mount_fieldnames {
DEVICE = 0,
MOUNTPT,
FSTYPE,
OPTIONS,
_FIELDNAME_MAX
};
static uint64_t default_size;
const char split_tok = ' ';
char *splitstr[_FIELDNAME_MAX];
char buf[ODP_BUFF_SIZE];
char *retval = NULL;
FILE *fd = fopen("/proc/mounts", "r");
if (!fd)
ODP_PRINT("Cannot open proc_mount\n");
if (default_size == 0)
default_size = get_default_hp_size();
while (fgets(buf, sizeof(buf), fd)) {
if (odp_strsplit(buf, sizeof(buf), splitstr, _FIELDNAME_MAX,
split_tok) != _FIELDNAME_MAX) {
ODP_PRINT("Error parsing proc_mount\n");
break; /* return NULL */
}
if (strncmp(splitstr[FSTYPE], HUGETLBFS_DESC,
HGTLB_DSC_LEN) == 0) {
const char *pagesz_str = strstr(splitstr[OPTIONS],
HUGEPAGE_SIZE_DESC);
/* if no explicit page size, the
* default page size is compared */
if (!pagesz_str) {
if (hugepage_sz == default_size) {
retval = strdup(splitstr[MOUNTPT]);
break;
}
}
/* there is an explicit page size, so check it */
else {
uint64_t pagesz =
odp_str_to_size(
&pagesz_str[HP_DESC_LEN]);
if (pagesz == hugepage_sz) {
retval = strdup(splitstr[MOUNTPT]);
break;
}
}
} /* end if strncmp hugetlbfs */
} /* end while fgets */
fclose(fd);
return retval;
}
