[PATCH v6 15/15] tools headers uapi: add MADV_COLLAPSE madvise mode to tools

["Zach O'Keefe" <zokeefe@google.com>]

Tools able to translate MADV_COLLAPSE advice to human readable string:

$ tools/perf/trace/beauty/madvise_behavior.sh
static const char *madvise_advices[] = {
        [0] = "NORMAL",
        [1] = "RANDOM",
        [2] = "SEQUENTIAL",
        [3] = "WILLNEED",
        [4] = "DONTNEED",
        [8] = "FREE",
        [9] = "REMOVE",
        [10] = "DONTFORK",
        [11] = "DOFORK",
        [12] = "MERGEABLE",
        [13] = "UNMERGEABLE",
        [14] = "HUGEPAGE",
        [15] = "NOHUGEPAGE",
        [16] = "DONTDUMP",
        [17] = "DODUMP",
        [18] = "WIPEONFORK",
        [19] = "KEEPONFORK",
        [20] = "COLD",
        [21] = "PAGEOUT",
        [22] = "POPULATE_READ",
        [23] = "POPULATE_WRITE",
        [24] = "DONTNEED_LOCKED",
        [25] = "COLLAPSE",
        [100] = "HWPOISON",
        [101] = "SOFT_OFFLINE",
};

Signed-off-by: Zach O'Keefe <zokeefe@google.com>
---
 tools/include/uapi/asm-generic/mman-common.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/include/uapi/asm-generic/mman-common.h b/tools/include/uapi/asm-generic/mman-common.h
index 6c1aa92a92e4..6ce1f1ceb432 100644
--- a/tools/include/uapi/asm-generic/mman-common.h
+++ b/tools/include/uapi/asm-generic/mman-common.h
@@ -77,6 +77,8 @@
 
 #define MADV_DONTNEED_LOCKED	24	/* like DONTNEED, but drop locked pages too */
 
+#define MADV_COLLAPSE	25		/* Synchronous hugepage collapse */
+
 /* compatibility flags */
 #define MAP_FILE	0
 
-- 
2.36.1.255.ge46751e96f-goog