[PATCH 05/24] tools headers uapi: Sync asm-generic/mman-common.h with the kernel

From: Arnaldo Carvalho de Melo
Date: Tue Oct 01 2019 - 07:12:53 EST


From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

To pick the changes from:

1a4e58cce84e ("mm: introduce MADV_PAGEOUT")
9c276cc65a58 ("mm: introduce MADV_COLD")

That result in these changes in the tools:

$ tools/perf/trace/beauty/madvise_behavior.sh > before
$ cp include/uapi/asm-generic/mman-common.h tools/include/uapi/asm-generic/mman-common.h
$ git diff
diff --git a/tools/include/uapi/asm-generic/mman-common.h b/tools/include/uapi/asm-generic/mman-common.h
index 63b1f506ea67..c160a5354eb6 100644
--- a/tools/include/uapi/asm-generic/mman-common.h
+++ b/tools/include/uapi/asm-generic/mman-common.h
@@ -67,6 +67,9 @@
#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */
#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */

+#define MADV_COLD 20 /* deactivate these pages */
+#define MADV_PAGEOUT 21 /* reclaim these pages */
+
/* compatibility flags */
#define MAP_FILE 0

$ tools/perf/trace/beauty/madvise_behavior.sh > after
$ diff -u before after
--- before 2019-09-27 11:29:43.346320100 -0300
+++ after 2019-09-27 11:30:03.838570439 -0300
@@ -16,6 +16,8 @@
[17] = "DODUMP",
[18] = "WIPEONFORK",
[19] = "KEEPONFORK",
+ [20] = "COLD",
+ [21] = "PAGEOUT",
[100] = "HWPOISON",
[101] = "SOFT_OFFLINE",
};
$

I.e. now when madvise gets those behaviours as args, it will be able to
translate from the number to a human readable string.

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@xxxxxxxxx>
Cc: Brendan Gregg <brendan.d.gregg@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Luis ClÃudio GonÃalves <lclaudio@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: https://lkml.kernel.org/n/tip-n40y6c4sa49p29q6sl8w3ufx@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/include/uapi/asm-generic/mman-common.h | 3 +++
1 file changed, 3 insertions(+)

diff --git a/tools/include/uapi/asm-generic/mman-common.h b/tools/include/uapi/asm-generic/mman-common.h
index 63b1f506ea67..c160a5354eb6 100644
--- a/tools/include/uapi/asm-generic/mman-common.h
+++ b/tools/include/uapi/asm-generic/mman-common.h
@@ -67,6 +67,9 @@
#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */
#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */

+#define MADV_COLD 20 /* deactivate these pages */
+#define MADV_PAGEOUT 21 /* reclaim these pages */
+
/* compatibility flags */
#define MAP_FILE 0

--
2.21.0