tools/testing/selftests/riscv/mm/mmap_test.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 #ifndef _TESTCASES_MMAP_TEST_H
   3 #define _TESTCASES_MMAP_TEST_H
   4 #include <sys/mman.h>
   5 #include <sys/resource.h>
   6 #include <stddef.h>
   7 #include <strings.h>
   8 #include "../../kselftest_harness.h"
   9
  10 #define TOP_DOWN 0
  11 #define BOTTOM_UP 1
  12
  13 #define PROT (PROT_READ | PROT_WRITE)
  14 #define FLAGS (MAP_PRIVATE | MAP_ANONYMOUS)
  15
  16 static inline int memory_layout(void)
  17 {
  18         void *value1 = mmap(NULL, sizeof(int), PROT, FLAGS, 0, 0);
  19         void *value2 = mmap(NULL, sizeof(int), PROT, FLAGS, 0, 0);
  20
  21         return value2 > value1;
  22 }
  23 #endif /* _TESTCASES_MMAP_TEST_H */