Merge tag 'mac80211-for-davem-2015-01-06' of git://git.kernel.org/pub/scm/linux/kerne...

[cascardo/linux.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index d780351..5f2ce61 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.
 
+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