#define F_SEAL_WRITE 0x0008 /* prevent writes */
#endif
+
+uword
+clib_mem_get_page_size (void)
+{
+ return getpagesize ();
+}
+
+uword
+clib_mem_get_default_hugepage_size (void)
+{
+ unformat_input_t input;
+ static u32 size = 0;
+ int fd;
+
+ if (size)
+ goto done;
+
+ if ((fd = open ("/proc/meminfo", 0)) == -1)
+ return 0;
+
+ unformat_init_clib_file (&input, fd);
+
+ while (unformat_check_input (&input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (&input, "Hugepagesize:%_%u kB", &size))
+ ;
+ else
+ unformat_skip_line (&input);
+ }
+ unformat_free (&input);
+ close (fd);
+done:
+ return 1024ULL * size;
+}
+
u64
-clib_mem_vm_get_page_size (int fd)
+clib_mem_get_fd_page_size (int fd)
{
struct stat st = { 0 };
if (fstat (fd, &st) == -1)
}
int
-clib_mem_vm_get_log2_page_size (int fd)
+clib_mem_get_fd_log2_page_size (int fd)
{
- return min_log2 (clib_mem_vm_get_page_size (fd));
+ return min_log2 (clib_mem_get_fd_page_size (fd));
}
void
#define MFD_HUGETLB 0x0004U
#endif
+clib_error_t *
+clib_mem_create_fd (char *name, int *fdp)
+{
+ int fd;
+
+ ASSERT (name);
+
+ if ((fd = memfd_create (name, MFD_ALLOW_SEALING)) == -1)
+ return clib_error_return_unix (0, "memfd_create");
+
+ if ((fcntl (fd, F_ADD_SEALS, F_SEAL_SHRINK)) == -1)
+ {
+ close (fd);
+ return clib_error_return_unix (0, "fcntl (F_ADD_SEALS)");
+ }
+
+ *fdp = fd;
+ return 0;
+}
+
clib_error_t *
clib_mem_create_hugetlb_fd (char *name, int *fdp)
{
}
else
{
- if ((fd = memfd_create (a->name, MFD_ALLOW_SEALING)) == -1)
- {
- err = clib_error_return_unix (0, "memfd_create");
- goto error;
- }
-
- if ((fcntl (fd, F_ADD_SEALS, F_SEAL_SHRINK)) == -1)
- {
- err = clib_error_return_unix (0, "fcntl (F_ADD_SEALS)");
- goto error;
- }
+ if ((err = clib_mem_create_fd (a->name, &fd)))
+ goto error;
}
- log2_page_size = clib_mem_vm_get_log2_page_size (fd);
+ log2_page_size = clib_mem_get_fd_log2_page_size (fd);
if (log2_page_size == 0)
{
err = clib_error_return_unix (0, "cannot determine page size");