mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-11-01 02:21:16 +00:00
bad6663f24
This is a wrap-up of three patches pending upstream approval. I'm bundling them because they are interdependent, and it'll be easier to drop it on rebase later. 1. dm: allow a dm-fs-style device to be shared via dm-ioctl Integrates feedback from Alisdair, Mike, and Kiyoshi. Two main changes occur here: - One function is added which allows for a programmatically created mapped device to be inserted into the dm-ioctl hash table. This binds the device to a name and, optional, uuid which is needed by udev and allows for userspace management of the mapped device. - dm_table_complete() was extended to handle all of the final functional changes required for the table to be operational once called. 2. init: boot to device-mapper targets without an initr* Add a dm= kernel parameter modeled after the md= parameter from do_mounts_md. It allows for device-mapper targets to be configured at boot time for use early in the boot process (as the root device or otherwise). It also replaces /dev/XXX calls with major:minor opportunistically. The format is dm="name uuid ro,table line 1,table line 2,...". The parser expects the comma to be safe to use as a newline substitute but, otherwise, uses the normal separator of space. Some attempt has been made to make it forgiving of additional spaces (using skip_spaces()). A mapped device created during boot will be assigned a minor of 0 and may be access via /dev/dm-0. An example dm-linear root with no uuid may look like: root=/dev/dm-0 dm="lroot none ro, 0 4096 linear /dev/ubdb 0, 4096 4096 linear /dv/ubdc 0" Once udev is started, /dev/dm-0 will become /dev/mapper/lroot. Older upstream threads: http://marc.info/?l=dm-devel&m=127429492521964&w=2 http://marc.info/?l=dm-devel&m=127429499422096&w=2 http://marc.info/?l=dm-devel&m=127429493922000&w=2 Latest upstream threads: https://patchwork.kernel.org/patch/104859/ https://patchwork.kernel.org/patch/104860/ https://patchwork.kernel.org/patch/104861/ BUG: 27175947 Signed-off-by: Will Drewry <wad@chromium.org> Review URL: http://codereview.chromium.org/2020011 Change-Id: I92bd53432a11241228d2e5ac89a3b20d19b05a31
34 lines
1.1 KiB
Makefile
34 lines
1.1 KiB
Makefile
#
|
|
# Makefile for the linux kernel.
|
|
#
|
|
|
|
obj-y := main.o version.o mounts.o
|
|
obj-y += noinitramfs.o
|
|
obj-$(CONFIG_BLK_DEV_INITRD) += initramfs.o
|
|
obj-$(CONFIG_GENERIC_CALIBRATE_DELAY) += calibrate.o
|
|
|
|
ifneq ($(CONFIG_ARCH_INIT_TASK),y)
|
|
obj-y += init_task.o
|
|
endif
|
|
|
|
mounts-y := do_mounts.o
|
|
mounts-$(CONFIG_BLK_DEV_RAM) += do_mounts_rd.o
|
|
mounts-$(CONFIG_BLK_DEV_INITRD) += do_mounts_initrd.o
|
|
mounts-$(CONFIG_BLK_DEV_MD) += do_mounts_md.o
|
|
mounts-$(CONFIG_BLK_DEV_DM) += do_mounts_dm.o
|
|
|
|
# dependencies on generated files need to be listed explicitly
|
|
$(obj)/version.o: include/generated/compile.h
|
|
|
|
# compile.h changes depending on hostname, generation number, etc,
|
|
# so we regenerate it always.
|
|
# mkcompile_h will make sure to only update the
|
|
# actual file if its content has changed.
|
|
|
|
chk_compile.h = :
|
|
quiet_chk_compile.h = echo ' CHK $@'
|
|
silent_chk_compile.h = :
|
|
include/generated/compile.h: FORCE
|
|
@$($(quiet)chk_compile.h)
|
|
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ \
|
|
"$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT)" "$(CC) $(KBUILD_CFLAGS)"
|