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| author |   Changbin Du <changbin.du@gmail.com> | 2019-03-05 15:46:19 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-05 21:07:18 -0800 |
| commit | 8aa49762dba3e8ce9a52a9b6da221e61a0c6de08 (patch) | |
| tree | 8904207038a88d1a784430f71b7a434bd6002a61 /mm/Kconfig.debug | |
| parent | mm/mmap.c: remove some redundancy in arch_get_unmapped_area_topdown() (diff) | |
| download | linux-dev-8aa49762dba3e8ce9a52a9b6da221e61a0c6de08.tar.xz linux-dev-8aa49762dba3e8ce9a52a9b6da221e61a0c6de08.zip | |
mm/page_owner: move config option to mm/Kconfig.debug
Move the PAGE_OWNER option from submenu "Compile-time checks and
compiler options" to dedicated submenu "Memory Debugging".
Link: http://lkml.kernel.org/r/20190120024254.6270-1-changbin.du@gmail.com
Signed-off-by: Changbin Du <changbin.du@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/Kconfig.debug')
| -rw-r--r-- | mm/Kconfig.debug | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug index 9a7b8b049d04..e3df921208c0 100644 --- a/mm/Kconfig.debug +++ b/mm/Kconfig.debug @@ -39,6 +39,23 @@ config DEBUG_PAGEALLOC_ENABLE_DEFAULT Enable debug page memory allocations by default? This value can be overridden by debug_pagealloc=off|on. +config PAGE_OWNER + bool "Track page owner" + depends on DEBUG_KERNEL && STACKTRACE_SUPPORT + select DEBUG_FS + select STACKTRACE + select STACKDEPOT + 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 PAGE_POISONING bool "Poison pages after freeing" select PAGE_POISONING_NO_SANITY if HIBERNATION |