To get the defines introduced in the commit 
e8c24d3a23a4 ("x86/pkeys:
Allocation/free syscalls")
Silencing this perf build warning:
  Warning: tools/include/uapi/asm-generic/mman-common.h differs from kernel
Need to change 'perf trace' to beautify those syscalls, as soon as
booting with a kernel with it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-yev9rexu02cl7cjeozzmrl9t@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 
 #define MAP_HUGE_SHIFT 26
 #define MAP_HUGE_MASK  0x3f
 
+#define PKEY_DISABLE_ACCESS    0x1
+#define PKEY_DISABLE_WRITE     0x2
+#define PKEY_ACCESS_MASK       (PKEY_DISABLE_ACCESS |\
+                                PKEY_DISABLE_WRITE)
+
 #endif /* __ASM_GENERIC_MMAN_COMMON_H */