Kirill A. Shutemov ea1e7ed337 mm: create a separate slab for page->ptl allocation ... If DEBUG_SPINLOCK and DEBUG_LOCK_ALLOC are enabled spinlock_t on x86_64 is 72 bytes. For page->ptl they will be allocated from kmalloc-96 slab, so we loose 24 on each. An average system can easily allocate few tens thousands of page->ptl and overhead is significant. Let's create a separate slab for page->ptl allocation to solve this. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-11-15 09:32:20 +09:00
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Kconfig	init/Kconfig: add option to disable kernel compression	2013-11-13 12:09:35 +09:00
Makefile	init_task: Replace CONFIG_HAVE_GENERIC_INIT_TASK	2012-05-05 13:00:46 +02:00
calibrate.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
do_mounts.c	init/do_mounts.c: add maj:min syntax comment	2013-11-13 12:09:12 +09:00
do_mounts.h	md: move lots of #include lines out of .h files and into .c	2009-03-31 14:33:13 +11:00
do_mounts_initrd.c	usermodehelper: split remaining calls to call_usermodehelper_fns()	2013-04-30 17:04:06 -07:00
do_mounts_md.c	init: disable sparse checking of the mount.o source files	2012-05-31 17:49:27 -07:00
do_mounts_rd.c	./Makefile: export initial ramdisk compression config option	2013-11-13 12:09:36 +09:00
init_task.c	sched/rt: Move rt specific bits into new header file	2013-02-07 20:51:08 +01:00
initramfs.c	init, block: try to load default elevator module early during boot	2013-01-18 14:05:56 -08:00
main.c	mm: create a separate slab for page->ptl allocation	2013-11-15 09:32:20 +09:00
noinitramfs.c	init: mark __user address space on string literals	2010-10-26 16:52:15 -07:00
version.c	proc: Split the namespace stuff out into linux/proc_ns.h	2013-05-01 17:29:39 -04:00