tools: Update asm-generic/mman-common.h copy from the kernel

To get the defines introduced in the commit aafd4562dfee ("mm: arch:
consolidate mmap hugetlb size encodings"), that doesn't brings anything
interesting for tools/, but also the ones from d2cd9ede6e19 ("mm,fork:
introduce MADV_WIPEONFORK"), which does, and ends up triggering an auto-update
to the tools/perf/trace/beauty/generated/madvise_behavior_array.c file,
supporting the newly introduced 'behavior' values.

This silences this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/asm-generic/mman-common.h' differs from latest version at 'include/uapi/asm-generic/mman-common.h'

Testing it:

  # cat madvise.c
  #include <sys/mman.h>
  #include <stdlib.h>

  #ifndef MADV_WIPEONFORK
  #define MADV_WIPEONFORK 18
  #endif
  #ifndef MADV_KEEPONFORK
  #define MADV_KEEPONFORK 19
  #endif

  int main(void)
  {
        void *ptr = mmap(NULL, 4096, PROT_NONE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);

        madvise(ptr, 4096, MADV_WIPEONFORK);
        madvise(ptr, 4096, MADV_KEEPONFORK);

	return 0;
  }
  [root@jouet c]# perf trace -e mmap,madvise ./madvise
     0.000 ( 0.013 ms): madvise/11732 mmap(len: 8192, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS            ) = 0x7fba6e015000
     0.047 ( 0.004 ms): madvise/11732 mmap(len: 160164, prot: READ, flags: PRIVATE, fd: 3                   ) = 0x7fba6dfed000
     0.084 ( 0.009 ms): madvise/11732 mmap(len: 4000096, prot: EXEC|READ, flags: PRIVATE|DENYWRITE, fd: 3   ) = 0x7fba6da20000
     0.109 ( 0.006 ms): madvise/11732 mmap(addr: 0x7fba6dde7000, len: 24576, prot: READ|WRITE, flags: PRIVATE|DENYWRITE|FIXED, fd: 3, off: 1863680) = 0x7fba6dde7000
     0.125 ( 0.004 ms): madvise/11732 mmap(addr: 0x7fba6dded000, len: 14688, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS|FIXED) = 0x7fba6dded000
     0.150 ( 0.006 ms): madvise/11732 mmap(len: 12288, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS           ) = 0x7fba6dfea000
     0.288 ( 0.003 ms): madvise/11732 mmap(len: 4096, flags: PRIVATE|ANONYMOUS                              ) = 0x7fba6e014000
     0.292 ( 0.002 ms): madvise/11732 madvise(start: 0x7fba6e014000, len_in: 4096, behavior: MADV_WIPEONFORK) = 0
     0.295 ( 0.001 ms): madvise/11732 madvise(start: 0x7fba6e014000, len_in: 4096, behavior: MADV_KEEPONFORK) = 0
  # uname -a
  Linux jouet 4.13.0+ #2 SMP Mon Sep 18 17:22:46 -03 2017 x86_64 x86_64 x86_64 GNU/Linux
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Rik van Riel <riel@redhat.com>
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>

diff --git a/tools/include/uapi/asm-generic/mman-common.h b/tools/include/uapi/asm-generic/mman-common.h
index 8c27db0c5c08ce84fc7299bd9bff2cee571b9397..203268f9231e155d72307995989feab4857defe7 100644 (file)
--- a/tools/include/uapi/asm-generic/mman-common.h
+++ b/tools/include/uapi/asm-generic/mman-common.h
@@ -58,20 +58,12 @@
                                           overrides the coredump filter bits */
 #define MADV_DODUMP    17              /* Clear the MADV_DONTDUMP flag */
 
+#define MADV_WIPEONFORK 18             /* Zero memory on fork, child only */
+#define MADV_KEEPONFORK 19             /* Undo MADV_WIPEONFORK */
+
 /* compatibility flags */
 #define MAP_FILE       0
 
-/*
- * When MAP_HUGETLB is set bits [26:31] encode the log2 of the huge page size.
- * This gives us 6 bits, which is enough until someone invents 128 bit address
- * spaces.
- *
- * Assume these are all power of twos.
- * When 0 use the default page size.
- */
-#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 |\