Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[firefly-linux-kernel-4.4.55.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index d780351835e9cb9e0b9bcf26f0e85f43d11f15c4..5f2ce616c0462db9b9055528110268385b2b653e 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -227,6 +227,22 @@ config UNUSED_SYMBOLS
          you really need it, and what the merge plan to the mainline kernel for
          your module is.
 
          you really need it, and what the merge plan to the mainline kernel for
          your module is.
 

+config PAGE_OWNER
+       bool "Track page owner"
+       depends on DEBUG_KERNEL && STACKTRACE_SUPPORT
+       select DEBUG_FS
+       select STACKTRACE
+       select PAGE_EXTENSION
+       help
+         This keeps track of what call chain is the owner of a page, may
+         help to find bare alloc_page(s) leaks. Even if you include this
+         feature on your build, it is disabled in default. You should pass
+         "page_owner=on" to boot parameter in order to enable it. Eats
+         a fair amount of memory if enabled. See tools/vm/page_owner_sort.c
+         for user-space helper.
+
+         If unsure, say N.
+

 config DEBUG_FS
        bool "Debug Filesystem"
        help
 config DEBUG_FS
        bool "Debug Filesystem"
        help