• Arnaldo Carvalho de Melo's avatar
    tools headers UAPI: Sync asm-generic/mman-common.h with the kernel · 6d05e139
    Arnaldo Carvalho de Melo authored
    To pick the changes from:
    
      9457056a ("mm: madvise: MADV_DONTNEED_LOCKED")
    
    That result in these changes in the tools:
    
      $ diff -u tools/include/uapi/asm-generic/mman-common.h include/uapi/asm-generic/mman-common.h
      --- tools/include/uapi/asm-generic/mman-common.h	2022-03-29 16:17:50.461694991 -0300
      +++ include/uapi/asm-generic/mman-common.h	2022-03-27 19:12:48.923250468 -0300
      @@ -75,6 +75,8 @@
       #define MADV_POPULATE_READ	22	/* populate (prefault) page tables readable */
       #define MADV_POPULATE_WRITE	23	/* populate (prefault) page tables writable */
    
      +#define MADV_DONTNEED_LOCKED	24	/* like DONTNEED, but drop locked pages too */
      +
       /* compatibility flags */
       #define MAP_FILE	0
    
      $ tools/perf/trace/beauty/madvise_behavior.sh > before
      $ cp include/uapi/asm-generic/mman-common.h tools/include/uapi/asm-generic/mman-common.h
      $ tools/perf/trace/beauty/madvise_behavior.sh > after
      $ diff -u before after
      --- before	2022-03-29 16:18:04.091044244 -0300
      +++ after	2022-03-29 16:18:11.692238906 -0300
      @@ -20,6 +20,7 @@
       	[21] = "PAGEOUT",
       	[22] = "POPULATE_READ",
       	[23] = "POPULATE_WRITE",
      +	[24] = "DONTNEED_LOCKED",
       	[100] = "HWPOISON",
       	[101] = "SOFT_OFFLINE",
       };
      $
    
    I.e. now when madvise gets those behaviours as args, 'perf trace' will
    be able to translate from the number to a human readable string and to
    use the strings in tracepoint filter expressions.
    
    This addresses the following 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'
      diff -u tools/include/uapi/asm-generic/mman-common.h include/uapi/asm-generic/mman-common.h
    
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Ian Rogers <irogers@google.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Johannes Weiner <hannes@cmpxchg.org>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Link: http://lore.kernel.org/lkml/YkNcUfeh795yqGMV@kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    6d05e139
mman-common.h 3.66 KB