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authorSzabolcs Nagy <nsz@port70.net>2016-03-19 13:37:37 +0100
committerRich Felker <dalias@aerifal.cx>2016-03-19 11:31:24 -0400
commitd578c74e677c9c29bfa0b5eec1f21506b9c05558 (patch)
treea0ab2b66694ce28c78530b9ae9ef0646ce6f48b1
parentb10ca0f560491ed9e353ead6e35f8992e9800c7a (diff)
downloadmusl-d578c74e677c9c29bfa0b5eec1f21506b9c05558.tar.gz
add MADV_FREE madvise command from linux v4.5
allows the os to free the marked pages lazily on memory pressure. expected to increase malloc performance. new in linux commit 854e9ed09dedf0c19ac8640e91bcc74bc3f9e5c9
-rw-r--r--include/sys/mman.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sys/mman.h b/include/sys/mman.h
index 596a03a7..8a5149c9 100644
--- a/include/sys/mman.h
+++ b/include/sys/mman.h
@@ -62,6 +62,7 @@ extern "C" {
#define MADV_SEQUENTIAL 2
#define MADV_WILLNEED 3
#define MADV_DONTNEED 4
+#define MADV_FREE 8
#define MADV_REMOVE 9
#define MADV_DONTFORK 10
#define MADV_DOFORK 11