Commit a14c151e authored Sep 04, 2015 by Andrea Arcangeli Committed by Linus Torvalds Sep 04, 2015

userfaultfd: buildsystem activation

This allows to select the userfaultfd during configuration to build it.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Cc: Sanidhya Kashyap <sanidhya.gatech@gmail.com>
Cc: zhang.zhanghailiang@huawei.com
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Andres Lagar-Cavilla <andreslc@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Hugh Dickins <hughd@google.com>
Cc: Peter Feiner <pfeiner@google.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Huangpeng (Peter)" <peter.huangpeng@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 8d2afd96

fs/Makefile

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -27,6 +27,7 @@ obj-$(CONFIG_ANON_INODES) += anon_inodes.o
	obj-$(CONFIG_SIGNALFD) += signalfd.o		obj-$(CONFIG_SIGNALFD) += signalfd.o
	obj-$(CONFIG_TIMERFD) += timerfd.o		obj-$(CONFIG_TIMERFD) += timerfd.o
	obj-$(CONFIG_EVENTFD) += eventfd.o		obj-$(CONFIG_EVENTFD) += eventfd.o
			obj-$(CONFIG_USERFAULTFD) += userfaultfd.o
	obj-$(CONFIG_AIO) += aio.o		obj-$(CONFIG_AIO) += aio.o
	obj-$(CONFIG_FS_DAX) += dax.o		obj-$(CONFIG_FS_DAX) += dax.o
	obj-$(CONFIG_FILE_LOCKING) += locks.o		obj-$(CONFIG_FILE_LOCKING) += locks.o

init/Kconfig

+11 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1576,6 +1576,17 @@ config ADVISE_SYSCALLS
	applications use these syscalls, you can disable this option to save		applications use these syscalls, you can disable this option to save
	space.		space.

			config USERFAULTFD
			bool "Enable userfaultfd() system call"
			select ANON_INODES
			default y
			depends on MMU
			help
			Enable the userfaultfd() system call that allows to intercept and
			handle page faults in userland.

			If unsure, say Y.

	config PCI_QUIRKS		config PCI_QUIRKS
	default y		default y
	bool "Enable PCI quirk workarounds" if EXPERT		bool "Enable PCI quirk workarounds" if EXPERT