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Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next

Browse Source 
This merges in the ppc-kvm topic branch of the powerpc tree to get
two patches which are prerequisites for the following patch series,
plus another patch which touches both powerpc and KVM code.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Paul Mackerras 2018-01-19 12:09:57 +11:00
commit d27998185d
2638 changed files with 175153 additions and 20195 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
.gitignore vendored
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@ -55,6 +55,11 @@ modules.builtin
/System.map
/Module.markers
#
# RPM spec file (make rpm-pkg)
#
/*.spec
#
# Debian directory (make deb-pkg)
#

2
.mailmap
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@ -73,6 +73,8 @@ James E Wilson <wilson@specifix.com>
James Hogan <jhogan@kernel.org> <james.hogan@imgtec.com>
James Hogan <jhogan@kernel.org> <james@albanarts.com>
James Ketrenos <jketreno@io.(none)>
Jason Gunthorpe <jgg@ziepe.ca> <jgg@mellanox.com>
Jason Gunthorpe <jgg@ziepe.ca> <jgunthorpe@obsidianresearch.com>
Javi Merino <javi.merino@kernel.org> <javi.merino@arm.com>
<javier@osg.samsung.com> <javier.martinez@collabora.co.uk>
Jean Tourrilhes <jt@hpl.hp.com>

41
Documentation/ABI/testing/dell-smbios-wmi Normal file
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@ -0,0 +1,41 @@
What: /dev/wmi/dell-smbios
Date: November 2017
KernelVersion: 4.15
Contact: "Mario Limonciello" <mario.limonciello@dell.com>
Description:
Perform SMBIOS calls on supported Dell machines.
through the Dell ACPI-WMI interface.
IOCTL's and buffer formats are defined in:
<uapi/linux/wmi.h>
1) To perform an SMBIOS call from userspace, you'll need to
first determine the minimum size of the calling interface
buffer for your machine.
Platforms that contain larger buffers can return larger
objects from the system firmware.
Commonly this size is either 4k or 32k.
To determine the size of the buffer read() a u64 dword from
the WMI character device /dev/wmi/dell-smbios.
2) After you've determined the minimum size of the calling
interface buffer, you can allocate a structure that represents
the structure documented above.
3) In the 'length' object store the size of the buffer you
determined above and allocated.
4) In this buffer object, prepare as necessary for the SMBIOS
call you're interested in. Typically SMBIOS buffers have
"class", "select", and "input" defined to values that coincide
with the data you are interested in.
Documenting class/select/input values is outside of the scope
of this documentation. Check with the libsmbios project for
further documentation on these values.
6) Run the call by using ioctl() as described in the header.
7) The output will be returned in the buffer object.
8) Be sure to free up your allocated object.

21
Documentation/ABI/testing/sysfs-platform-dell-smbios Normal file
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@ -0,0 +1,21 @@
What: /sys/devices/platform/<platform>/tokens/*
Date: November 2017
KernelVersion: 4.15
Contact: "Mario Limonciello" <mario.limonciello@dell.com>
Description:
A read-only description of Dell platform tokens
available on the machine.
Each token attribute is available as a pair of
sysfs attributes readable by a process with
CAP_SYS_ADMIN.
For example the token ID "5" would be available
as the following attributes:
0005_location
0005_value
Tokens will vary from machine to machine, and
only tokens available on that machine will be
displayed.

11
Documentation/ABI/testing/sysfs-platform-intel-wmi-thunderbolt Normal file
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@ -0,0 +1,11 @@
What: /sys/devices/platform/<platform>/force_power
Date: September 2017
KernelVersion: 4.15
Contact: "Mario Limonciello" <mario.limonciello@dell.com>
Description:
Modify the platform force power state, influencing
Thunderbolt controllers to turn on or off when no
devices are connected (write-only)
There are two available states:
* 0 -> Force power disabled
* 1 -> Force power enabled

6
Documentation/admin-guide/dynamic-debug-howto.rst
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@ -18,7 +18,7 @@ shortcut for ``print_hex_dump(KERN_DEBUG)``.
For ``print_hex_dump_debug()``/``print_hex_dump_bytes()``, format string is
its ``prefix_str`` argument, if it is constant string; or ``hexdump``
in case ``prefix_str`` is build dynamically.
in case ``prefix_str`` is built dynamically.
Dynamic debug has even more useful features:
@ -197,8 +197,8 @@ line
line number matches the callsite line number exactly. A
range of line numbers matches any callsite between the first
and last line number inclusive. An empty first number means
the first line in the file, an empty line number means the
last number in the file. Examples::
the first line in the file, an empty last line number means the
last line number in the file. Examples::
line 1603 // exactly line 1603
line 1600-1605 // the six lines from line 1600 to line 1605

12
Documentation/admin-guide/kernel-parameters.txt
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@ -1890,6 +1890,10 @@
[KVM,ARM] Trap guest accesses to GICv3 common
system registers
kvm-arm.vgic_v4_enable=
[KVM,ARM] Allow use of GICv4 for direct injection of
LPIs.
kvm-intel.ept= [KVM,Intel] Disable extended page tables
(virtualized MMU) support on capable Intel chips.
Default is 1 (enabled)
@ -3246,13 +3250,15 @@
instead using the legacy FADT method
profile= [KNL] Enable kernel profiling via /proc/profile
Format: [schedule,]<number>
Format: [<profiletype>,]<number>
Param: <profiletype>: "schedule", "sleep", or "kvm"
[defaults to kernel profiling]
Param: "schedule" - profile schedule points.
Param: <number> - step/bucket size as a power of 2 for
statistical time based profiling.
Param: "sleep" - profile D-state sleeping (millisecs).
Requires CONFIG_SCHEDSTATS
Param: "kvm" - profile VM exits.
Param: <number> - step/bucket size as a power of 2 for
statistical time based profiling.
prompt_ramdisk= [RAM] List of RAM disks to prompt for floppy disk
before loading.

15
Documentation/admin-guide/thunderbolt.rst
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@ -221,3 +221,18 @@ The driver will create one virtual ethernet interface per Thunderbolt
port which are named like ``thunderbolt0`` and so on. From this point
you can either use standard userspace tools like ``ifconfig`` to
configure the interface or let your GUI to handle it automatically.
Forcing power
-------------
Many OEMs include a method that can be used to force the power of a
thunderbolt controller to an "On" state even if nothing is connected.
If supported by your machine this will be exposed by the WMI bus with
a sysfs attribute called "force_power".
For example the intel-wmi-thunderbolt driver exposes this attribute in:
/sys/devices/platform/PNP0C14:00/wmi_bus/wmi_bus-PNP0C14:00/86CCFD48-205E-4A77-9C48-2021CBEDE341/force_power
To force the power to on, write 1 to this attribute file.
To disable force power, write 0 to this attribute file.
Note: it's currently not possible to query the force power state of a platform.

43
Documentation/block/bfq-iosched.txt
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@ -20,12 +20,27 @@ for that device, by setting low_latency to 0. See Section 3 for
details on how to configure BFQ for the desired tradeoff between
latency and throughput, or on how to maximize throughput.
On average CPUs, the current version of BFQ can handle devices
performing at most ~30K IOPS; at most ~50 KIOPS on faster CPUs. As a
reference, 30-50 KIOPS correspond to very high bandwidths with
sequential I/O (e.g., 8-12 GB/s if I/O requests are 256 KB large), and
to 120-200 MB/s with 4KB random I/O. BFQ is currently being tested on
multi-queue devices too.
BFQ has a non-null overhead, which limits the maximum IOPS that a CPU
can process for a device scheduled with BFQ. To give an idea of the
limits on slow or average CPUs, here are, first, the limits of BFQ for
three different CPUs, on, respectively, an average laptop, an old
desktop, and a cheap embedded system, in case full hierarchical
support is enabled (i.e., CONFIG_BFQ_GROUP_IOSCHED is set), but
CONFIG_DEBUG_BLK_CGROUP is not set (Section 4-2):
- Intel i7-4850HQ: 400 KIOPS
- AMD A8-3850: 250 KIOPS
- ARM CortexTM-A53 Octa-core: 80 KIOPS
If CONFIG_DEBUG_BLK_CGROUP is set (and of course full hierarchical
support is enabled), then the sustainable throughput with BFQ
decreases, because all blkio.bfq* statistics are created and updated
(Section 4-2). For BFQ, this leads to the following maximum
sustainable throughputs, on the same systems as above:
- Intel i7-4850HQ: 310 KIOPS
- AMD A8-3850: 200 KIOPS
- ARM CortexTM-A53 Octa-core: 56 KIOPS
BFQ works for multi-queue devices too.
The table of contents follow. Impatients can just jump to Section 3.
@ -500,6 +515,22 @@ BFQ-specific files is "blkio.bfq." or "io.bfq." For example, the group
parameter to set the weight of a group with BFQ is blkio.bfq.weight
or io.bfq.weight.
As for cgroups-v1 (blkio controller), the exact set of stat files
created, and kept up-to-date by bfq, depends on whether
CONFIG_DEBUG_BLK_CGROUP is set. If it is set, then bfq creates all
the stat files documented in
Documentation/cgroup-v1/blkio-controller.txt. If, instead,
CONFIG_DEBUG_BLK_CGROUP is not set, then bfq creates only the files
blkio.bfq.io_service_bytes
blkio.bfq.io_service_bytes_recursive
blkio.bfq.io_serviced
blkio.bfq.io_serviced_recursive
The value of CONFIG_DEBUG_BLK_CGROUP greatly influences the maximum
throughput sustainable with bfq, because updating the blkio.bfq.*
stats is rather costly, especially for some of the stats enabled by
CONFIG_DEBUG_BLK_CGROUP.
Parameters to set
-----------------

7
Documentation/clearing-warn-once.txt Normal file
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@ -0,0 +1,7 @@
WARN_ONCE / WARN_ON_ONCE only print a warning once.
echo 1 > /sys/kernel/debug/clear_warn_once
clears the state and allows the warnings to print once again.
This can be useful after test suite runs to reproduce problems.

10
Documentation/core-api/local_ops.rst
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@ -177,18 +177,14 @@ Here is a sample module which implements a basic per cpu counter using
printk("Read : CPU %d, count %ld\n", cpu,
local_read(&per_cpu(counters, cpu)));
}
del_timer(&test_timer);
test_timer.expires = jiffies + 1000;
add_timer(&test_timer);
mod_timer(&test_timer, jiffies + 1000);
}
static int __init test_init(void)
{
/* initialize the timer that will increment the counter */
init_timer(&test_timer);
test_timer.function = do_test_timer;
test_timer.expires = jiffies + 1;
add_timer(&test_timer);
timer_setup(&test_timer, do_test_timer, 0);
mod_timer(&test_timer, jiffies + 1);
return 0;
}

3
Documentation/dev-tools/coccinelle.rst
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@ -33,9 +33,6 @@ of many distributions, e.g. :
You can get the latest version released from the Coccinelle homepage at
http://coccinelle.lip6.fr/
Information and tips about Coccinelle are also provided on the wiki
pages at http://cocci.ekstranet.diku.dk/wiki/doku.php
Once you have it, run the following command::
./configure

99
Documentation/dev-tools/kcov.rst
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@ -12,19 +12,30 @@ To achieve this goal it does not collect coverage in soft/hard interrupts
and instrumentation of some inherently non-deterministic parts of kernel is
disabled (e.g. scheduler, locking).
Usage
-----
kcov is also able to collect comparison operands from the instrumented code
(this feature currently requires that the kernel is compiled with clang).
Prerequisites
-------------
Configure the kernel with::
CONFIG_KCOV=y
CONFIG_KCOV requires gcc built on revision 231296 or later.
If the comparison operands need to be collected, set::
CONFIG_KCOV_ENABLE_COMPARISONS=y
Profiling data will only become accessible once debugfs has been mounted::
mount -t debugfs none /sys/kernel/debug
The following program demonstrates kcov usage from within a test program:
Coverage collection
-------------------
The following program demonstrates coverage collection from within a test
program using kcov:
.. code-block:: c
@ -44,6 +55,9 @@ The following program demonstrates kcov usage from within a test program:
#define KCOV_DISABLE _IO('c', 101)
#define COVER_SIZE (64<<10)
#define KCOV_TRACE_PC 0
#define KCOV_TRACE_CMP 1
int main(int argc, char **argv)
{
int fd;
@ -64,7 +78,7 @@ The following program demonstrates kcov usage from within a test program:
if ((void*)cover == MAP_FAILED)
perror("mmap"), exit(1);
/* Enable coverage collection on the current thread. */
if (ioctl(fd, KCOV_ENABLE, 0))
if (ioctl(fd, KCOV_ENABLE, KCOV_TRACE_PC))
perror("ioctl"), exit(1);
/* Reset coverage from the tail of the ioctl() call. */
__atomic_store_n(&cover[0], 0, __ATOMIC_RELAXED);
@ -111,3 +125,80 @@ The interface is fine-grained to allow efficient forking of test processes.
That is, a parent process opens /sys/kernel/debug/kcov, enables trace mode,
mmaps coverage buffer and then forks child processes in a loop. Child processes
only need to enable coverage (disable happens automatically on thread end).
Comparison operands collection
------------------------------
Comparison operands collection is similar to coverage collection:
.. code-block:: c
/* Same includes and defines as above. */
/* Number of 64-bit words per record. */
#define KCOV_WORDS_PER_CMP 4
/*
* The format for the types of collected comparisons.
*
* Bit 0 shows whether one of the arguments is a compile-time constant.
* Bits 1 & 2 contain log2 of the argument size, up to 8 bytes.
*/
#define KCOV_CMP_CONST (1 << 0)
#define KCOV_CMP_SIZE(n) ((n) << 1)
#define KCOV_CMP_MASK KCOV_CMP_SIZE(3)
int main(int argc, char **argv)
{
int fd;
uint64_t *cover, type, arg1, arg2, is_const, size;
unsigned long n, i;
fd = open("/sys/kernel/debug/kcov", O_RDWR);
if (fd == -1)
perror("open"), exit(1);
if (ioctl(fd, KCOV_INIT_TRACE, COVER_SIZE))
perror("ioctl"), exit(1);
/*
* Note that the buffer pointer is of type uint64_t*, because all
* the comparison operands are promoted to uint64_t.
*/
cover = (uint64_t *)mmap(NULL, COVER_SIZE * sizeof(unsigned long),
PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if ((void*)cover == MAP_FAILED)
perror("mmap"), exit(1);
/* Note KCOV_TRACE_CMP instead of KCOV_TRACE_PC. */
if (ioctl(fd, KCOV_ENABLE, KCOV_TRACE_CMP))
perror("ioctl"), exit(1);
__atomic_store_n(&cover[0], 0, __ATOMIC_RELAXED);
read(-1, NULL, 0);
/* Read number of comparisons collected. */
n = __atomic_load_n(&cover[0], __ATOMIC_RELAXED);
for (i = 0; i < n; i++) {
type = cover[i * KCOV_WORDS_PER_CMP + 1];
/* arg1 and arg2 - operands of the comparison. */
arg1 = cover[i * KCOV_WORDS_PER_CMP + 2];
arg2 = cover[i * KCOV_WORDS_PER_CMP + 3];
/* ip - caller address. */
ip = cover[i * KCOV_WORDS_PER_CMP + 4];
/* size of the operands. */
size = 1 << ((type & KCOV_CMP_MASK) >> 1);
/* is_const - true if either operand is a compile-time constant.*/
is_const = type & KCOV_CMP_CONST;
printf("ip: 0x%lx type: 0x%lx, arg1: 0x%lx, arg2: 0x%lx, "
"size: %lu, %s\n",
ip, type, arg1, arg2, size,
is_const ? "const" : "non-const");
}
if (ioctl(fd, KCOV_DISABLE, 0))
perror("ioctl"), exit(1);
/* Free resources. */
if (munmap(cover, COVER_SIZE * sizeof(unsigned long)))
perror("munmap"), exit(1);
if (close(fd))
perror("close"), exit(1);
return 0;
}
Note that the kcov modes (coverage collection or comparison operands) are
mutually exclusive.

2
Documentation/devicetree/bindings/arm/mediatek/mediatek,apmixedsys.txt
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@ -7,7 +7,9 @@ Required Properties:
- compatible: Should be one of:
- "mediatek,mt2701-apmixedsys"
- "mediatek,mt2712-apmixedsys", "syscon"
- "mediatek,mt6797-apmixedsys"
- "mediatek,mt7622-apmixedsys"
- "mediatek,mt8135-apmixedsys"
- "mediatek,mt8173-apmixedsys"
- #clock-cells: Must be 1

22
Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.txt Normal file
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@ -0,0 +1,22 @@
MediaTek AUDSYS controller
============================
The MediaTek AUDSYS controller provides various clocks to the system.
Required Properties:
- compatible: Should be one of:
- "mediatek,mt7622-audsys", "syscon"
- #clock-cells: Must be 1
The AUDSYS controller uses the common clk binding from
Documentation/devicetree/bindings/clock/clock-bindings.txt
The available clocks are defined in dt-bindings/clock/mt*-clk.h.
Example:
audsys: audsys@11220000 {
compatible = "mediatek,mt7622-audsys", "syscon";
reg = <0 0x11220000 0 0x1000>;
#clock-cells = <1>;
};

1
Documentation/devicetree/bindings/arm/mediatek/mediatek,bdpsys.txt
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@ -7,6 +7,7 @@ Required Properties:
- compatible: Should be:
- "mediatek,mt2701-bdpsys", "syscon"
- "mediatek,mt2712-bdpsys", "syscon"
- #clock-cells: Must be 1
The bdpsys controller uses the common clk binding from

1
Documentation/devicetree/bindings/arm/mediatek/mediatek,ethsys.txt
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@ -7,6 +7,7 @@ Required Properties:
- compatible: Should be:
- "mediatek,mt2701-ethsys", "syscon"
- "mediatek,mt7622-ethsys", "syscon"
- #clock-cells: Must be 1
The ethsys controller uses the common clk binding from

1
Documentation/devicetree/bindings/arm/mediatek/mediatek,hifsys.txt
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@ -8,6 +8,7 @@ Required Properties:
- compatible: Should be:
- "mediatek,mt2701-hifsys", "syscon"
- "mediatek,mt7622-hifsys", "syscon"
- #clock-cells: Must be 1
The hifsys controller uses the common clk binding from

1
Documentation/devicetree/bindings/arm/mediatek/mediatek,imgsys.txt
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@ -7,6 +7,7 @@ Required Properties:
- compatible: Should be one of:
- "mediatek,mt2701-imgsys", "syscon"
- "mediatek,mt2712-imgsys", "syscon"
- "mediatek,mt6797-imgsys", "syscon"
- "mediatek,mt8173-imgsys", "syscon"
- #clock-cells: Must be 1

2
Documentation/devicetree/bindings/arm/mediatek/mediatek,infracfg.txt
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@ -8,7 +8,9 @@ Required Properties:
- compatible: Should be one of:
- "mediatek,mt2701-infracfg", "syscon"
- "mediatek,mt2712-infracfg", "syscon"
- "mediatek,mt6797-infracfg", "syscon"
- "mediatek,mt7622-infracfg", "syscon"
- "mediatek,mt8135-infracfg", "syscon"
- "mediatek,mt8173-infracfg", "syscon"
- #clock-cells: Must be 1

22
Documentation/devicetree/bindings/arm/mediatek/mediatek,jpgdecsys.txt Normal file
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@ -0,0 +1,22 @@
Mediatek jpgdecsys controller
============================
The Mediatek jpgdecsys controller provides various clocks to the system.
Required Properties:
- compatible: Should be:
- "mediatek,mt2712-jpgdecsys", "syscon"
- #clock-cells: Must be 1
The jpgdecsys controller uses the common clk binding from
Documentation/devicetree/bindings/clock/clock-bindings.txt
The available clocks are defined in dt-bindings/clock/mt*-clk.h.
Example:
jpgdecsys: syscon@19000000 {
compatible = "mediatek,mt2712-jpgdecsys", "syscon";
reg = <0 0x19000000 0 0x1000>;
#clock-cells = <1>;
};

22
Documentation/devicetree/bindings/arm/mediatek/mediatek,mcucfg.txt Normal file
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@ -0,0 +1,22 @@
Mediatek mcucfg controller
============================
The Mediatek mcucfg controller provides various clocks to the system.
Required Properties:
- compatible: Should be one of:
- "mediatek,mt2712-mcucfg", "syscon"
- #clock-cells: Must be 1
The mcucfg controller uses the common clk binding from
Documentation/devicetree/bindings/clock/clock-bindings.txt
The available clocks are defined in dt-bindings/clock/mt*-clk.h.
Example:
mcucfg: syscon@10220000 {
compatible = "mediatek,mt2712-mcucfg", "syscon";
reg = <0 0x10220000 0 0x1000>;
#clock-cells = <1>;
};

22
Documentation/devicetree/bindings/arm/mediatek/mediatek,mfgcfg.txt Normal file
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@ -0,0 +1,22 @@
Mediatek mfgcfg controller
============================
The Mediatek mfgcfg controller provides various clocks to the system.
Required Properties:
- compatible: Should be one of:
- "mediatek,mt2712-mfgcfg", "syscon"
- #clock-cells: Must be 1
The mfgcfg controller uses the common clk binding from
Documentation/devicetree/bindings/clock/clock-bindings.txt
The available clocks are defined in dt-bindings/clock/mt*-clk.h.
Example:
mfgcfg: syscon@13000000 {
compatible = "mediatek,mt2712-mfgcfg", "syscon";
reg = <0 0x13000000 0 0x1000>;
#clock-cells = <1>;
};

1
Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt
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@ -7,6 +7,7 @@ Required Properties:
- compatible: Should be one of:
- "mediatek,mt2701-mmsys", "syscon"
- "mediatek,mt2712-mmsys", "syscon"
- "mediatek,mt6797-mmsys", "syscon"
- "mediatek,mt8173-mmsys", "syscon"
- #clock-cells: Must be 1

22
Documentation/devicetree/bindings/arm/mediatek/mediatek,pciesys.txt Normal file
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@ -0,0 +1,22 @@
MediaTek PCIESYS controller
============================
The MediaTek PCIESYS controller provides various clocks to the system.
Required Properties:
- compatible: Should be:
- "mediatek,mt7622-pciesys", "syscon"
- #clock-cells: Must be 1
The PCIESYS controller uses the common clk binding from
Documentation/devicetree/bindings/clock/clock-bindings.txt
The available clocks are defined in dt-bindings/clock/mt*-clk.h.
Example:
pciesys: pciesys@1a100800 {
compatible = "mediatek,mt7622-pciesys", "syscon";
reg = <0 0x1a100800 0 0x1000>;
#clock-cells = <1>;
};

2
Documentation/devicetree/bindings/arm/mediatek/mediatek,pericfg.txt
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@ -8,6 +8,8 @@ Required Properties:
- compatible: Should be one of:
- "mediatek,mt2701-pericfg", "syscon"
- "mediatek,mt2712-pericfg", "syscon"
- "mediatek,mt7622-pericfg", "syscon"
- "mediatek,mt8135-pericfg", "syscon"
- "mediatek,mt8173-pericfg", "syscon"
- #clock-cells: Must be 1

22
Documentation/devicetree/bindings/arm/mediatek/mediatek,sgmiisys.txt Normal file
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@ -0,0 +1,22 @@
MediaTek SGMIISYS controller
============================
The MediaTek SGMIISYS controller provides various clocks to the system.
Required Properties:
- compatible: Should be:
- "mediatek,mt7622-sgmiisys", "syscon"
- #clock-cells: Must be 1
The SGMIISYS controller uses the common clk binding from
Documentation/devicetree/bindings/clock/clock-bindings.txt
The available clocks are defined in dt-bindings/clock/mt*-clk.h.
Example:
sgmiisys: sgmiisys@1b128000 {
compatible = "mediatek,mt7622-sgmiisys", "syscon";
reg = <0 0x1b128000 0 0x1000>;
#clock-cells = <1>;
};

22
Documentation/devicetree/bindings/arm/mediatek/mediatek,ssusbsys.txt Normal file
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@ -0,0 +1,22 @@
MediaTek SSUSBSYS controller
============================
The MediaTek SSUSBSYS controller provides various clocks to the system.
Required Properties:
- compatible: Should be:
- "mediatek,mt7622-ssusbsys", "syscon"
- #clock-cells: Must be 1
The SSUSBSYS controller uses the common clk binding from
Documentation/devicetree/bindings/clock/clock-bindings.txt
The available clocks are defined in dt-bindings/clock/mt*-clk.h.
Example:
ssusbsys: ssusbsys@1a000000 {
compatible = "mediatek,mt7622-ssusbsys", "syscon";
reg = <0 0x1a000000 0 0x1000>;
#clock-cells = <1>;
};

2
Documentation/devicetree/bindings/arm/mediatek/mediatek,topckgen.txt
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@ -7,7 +7,9 @@ Required Properties:
- compatible: Should be one of:
- "mediatek,mt2701-topckgen"
- "mediatek,mt2712-topckgen", "syscon"
- "mediatek,mt6797-topckgen"
- "mediatek,mt7622-topckgen"
- "mediatek,mt8135-topckgen"
- "mediatek,mt8173-topckgen"
- #clock-cells: Must be 1

1
Documentation/devicetree/bindings/arm/mediatek/mediatek,vdecsys.txt
View File

@ -7,6 +7,7 @@ Required Properties:
- compatible: Should be one of:
- "mediatek,mt2701-vdecsys", "syscon"
- "mediatek,mt2712-vdecsys", "syscon"
- "mediatek,mt6797-vdecsys", "syscon"
- "mediatek,mt8173-vdecsys", "syscon"
- #clock-cells: Must be 1

1
Documentation/devicetree/bindings/arm/mediatek/mediatek,vencsys.txt
View File

@ -6,6 +6,7 @@ The Mediatek vencsys controller provides various clocks to the system.
Required Properties:
- compatible: Should be one of:
- "mediatek,mt2712-vencsys", "syscon"
- "mediatek,mt6797-vencsys", "syscon"
- "mediatek,mt8173-vencsys", "syscon"
- #clock-cells: Must be 1

6
Documentation/devicetree/bindings/clock/clk-exynos-audss.txt
View File

@ -33,6 +33,12 @@ Required Properties:
- clock-names: Aliases for the above clocks. They should be "pll_ref",
"pll_in", "cdclk", "sclk_audio", and "sclk_pcm_in" respectively.
Optional Properties:
- power-domains: a phandle to respective power domain node as described by
generic PM domain bindings (see power/power_domain.txt for more
information).
The following is the list of clocks generated by the controller. Each clock is
assigned an identifier and client nodes use this identifier to specify the
clock which they consume. Some of the clocks are available only on a particular

43
Documentation/devicetree/bindings/clock/exynos4-clock.txt
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@ -41,3 +41,46 @@ Example 2: UART controller node that consumes the clock generated by the clock
clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>;
clock-names = "uart", "clk_uart_baud0";
};
Exynos4412 SoC contains some additional clocks for FIMC-ISP (Camera ISP)
subsystem. Registers for those clocks are located in the ISP power domain.
Because those registers are also located in a different memory region than
the main clock controller, a separate clock controller has to be defined for
handling them.
Required Properties:
- compatible: should be "samsung,exynos4412-isp-clock".
- reg: physical base address of the ISP clock controller and length of memory
mapped region.
- #clock-cells: should be 1.
- clocks: list of the clock controller input clock identifiers,
from common clock bindings, should point to CLK_ACLK200 and
CLK_ACLK400_MCUISP clocks from the main clock controller.
- clock-names: list of the clock controller input clock names,
as described in clock-bindings.txt, should be "aclk200" and
"aclk400_mcuisp".
- power-domains: a phandle to ISP power domain node as described by
generic PM domain bindings.
Example 3: The clock controllers bindings for Exynos4412 SoCs.
clock: clock-controller@10030000 {
compatible = "samsung,exynos4412-clock";
reg = <0x10030000 0x18000>;
#clock-cells = <1>;
};
isp_clock: clock-controller@10048000 {
compatible = "samsung,exynos4412-isp-clock";
reg = <0x10048000 0x1000>;
#clock-cells = <1>;
power-domains = <&pd_isp>;
clocks = <&clock CLK_ACLK200>, <&clock CLK_ACLK400_MCUISP>;
clock-names = "aclk200", "aclk400_mcuisp";
};

16
Documentation/devicetree/bindings/clock/exynos5433-clock.txt
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@ -168,6 +168,11 @@ Required Properties:
- aclk_cam1_400
- aclk_cam1_552
Optional properties:
- power-domains: a phandle to respective power domain node as described by
generic PM domain bindings (see power/power_domain.txt for more
information).
Each clock is assigned an identifier and client nodes can use this identifier
to specify the clock which they consume.
@ -270,6 +275,7 @@ Example 2: Examples of clock controller nodes are listed below.
clocks = <&xxti>,
<&cmu_top CLK_ACLK_G2D_266>,
<&cmu_top CLK_ACLK_G2D_400>;
power-domains = <&pd_g2d>;
};
cmu_disp: clock-controller@13b90000 {
@ -295,6 +301,7 @@ Example 2: Examples of clock controller nodes are listed below.
<&cmu_mif CLK_SCLK_DECON_ECLK_DISP>,
<&cmu_mif CLK_SCLK_DECON_TV_VCLK_DISP>,
<&cmu_mif CLK_ACLK_DISP_333>;
power-domains = <&pd_disp>;
};
cmu_aud: clock-controller@114c0000 {
@ -304,6 +311,7 @@ Example 2: Examples of clock controller nodes are listed below.
clock-names = "oscclk", "fout_aud_pll";
clocks = <&xxti>, <&cmu_top CLK_FOUT_AUD_PLL>;
power-domains = <&pd_aud>;
};
cmu_bus0: clock-controller@13600000 {
@ -340,6 +348,7 @@ Example 2: Examples of clock controller nodes are listed below.
clock-names = "oscclk", "aclk_g3d_400";
clocks = <&xxti>, <&cmu_top CLK_ACLK_G3D_400>;
power-domains = <&pd_g3d>;
};
cmu_gscl: clock-controller@13cf0000 {
@ -353,6 +362,7 @@ Example 2: Examples of clock controller nodes are listed below.
clocks = <&xxti>,
<&cmu_top CLK_ACLK_GSCL_111>,
<&cmu_top CLK_ACLK_GSCL_333>;
power-domains = <&pd_gscl>;
};
cmu_apollo: clock-controller@11900000 {
@ -384,6 +394,7 @@ Example 2: Examples of clock controller nodes are listed below.
clocks = <&xxti>,
<&cmu_top CLK_SCLK_JPEG_MSCL>,
<&cmu_top CLK_ACLK_MSCL_400>;
power-domains = <&pd_mscl>;
};
cmu_mfc: clock-controller@15280000 {
@ -393,6 +404,7 @@ Example 2: Examples of clock controller nodes are listed below.
clock-names = "oscclk", "aclk_mfc_400";
clocks = <&xxti>, <&cmu_top CLK_ACLK_MFC_400>;
power-domains = <&pd_mfc>;
};
cmu_hevc: clock-controller@14f80000 {
@ -402,6 +414,7 @@ Example 2: Examples of clock controller nodes are listed below.
clock-names = "oscclk", "aclk_hevc_400";
clocks = <&xxti>, <&cmu_top CLK_ACLK_HEVC_400>;
power-domains = <&pd_hevc>;
};
cmu_isp: clock-controller@146d0000 {
@ -415,6 +428,7 @@ Example 2: Examples of clock controller nodes are listed below.
clocks = <&xxti>,
<&cmu_top CLK_ACLK_ISP_DIS_400>,
<&cmu_top CLK_ACLK_ISP_400>;
power-domains = <&pd_isp>;
};
cmu_cam0: clock-controller@120d0000 {
@ -430,6 +444,7 @@ Example 2: Examples of clock controller nodes are listed below.
<&cmu_top CLK_ACLK_CAM0_333>,
<&cmu_top CLK_ACLK_CAM0_400>,
<&cmu_top CLK_ACLK_CAM0_552>;
power-domains = <&pd_cam0>;
};
cmu_cam1: clock-controller@145d0000 {
@ -451,6 +466,7 @@ Example 2: Examples of clock controller nodes are listed below.
<&cmu_top CLK_ACLK_CAM1_333>,
<&cmu_top CLK_ACLK_CAM1_400>,
<&cmu_top CLK_ACLK_CAM1_552>;
power-domains = <&pd_cam1>;
};
Example 3: UART controller node that consumes the clock generated by the clock

11
Documentation/devicetree/bindings/clock/qcom,rpmcc.txt
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@ -10,12 +10,23 @@ Required properties :
- compatible : shall contain only one of the following. The generic
compatible "qcom,rpmcc" should be also included.
"qcom,rpmcc-msm8660", "qcom,rpmcc"
"qcom,rpmcc-apq8060", "qcom,rpmcc"
"qcom,rpmcc-msm8916", "qcom,rpmcc"
"qcom,rpmcc-msm8974", "qcom,rpmcc"
"qcom,rpmcc-apq8064", "qcom,rpmcc"
"qcom,rpmcc-msm8996", "qcom,rpmcc"
- #clock-cells : shall contain 1
The clock enumerators are defined in <dt-bindings/clock/qcom,rpmcc.h>
and come in pairs: FOO_CLK followed by FOO_A_CLK. The latter clock
is an "active" clock, which means that the consumer only care that the
clock is available when the apps CPU subsystem is active, i.e. not
suspended or in deep idle. If it is important that the clock keeps running
during system suspend, you need to specify the non-active clock, the one
not containing *_A_* in the enumerator name.
Example:
smd {
compatible = "qcom,smd";

5
Documentation/devicetree/bindings/clock/renesas,cpg-mssr.txt
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@ -22,6 +22,7 @@ Required Properties:
- "renesas,r8a7794-cpg-mssr" for the r8a7794 SoC (R-Car E2)
- "renesas,r8a7795-cpg-mssr" for the r8a7795 SoC (R-Car H3)
- "renesas,r8a7796-cpg-mssr" for the r8a7796 SoC (R-Car M3-W)
- "renesas,r8a77970-cpg-mssr" for the r8a77970 SoC (R-Car V3M)
- "renesas,r8a77995-cpg-mssr" for the r8a77995 SoC (R-Car D3)
- reg: Base address and length of the memory resource used by the CPG/MSSR
@ -31,8 +32,8 @@ Required Properties:
clock-names
- clock-names: List of external parent clock names. Valid names are:
- "extal" (r8a7743, r8a7745, r8a7790, r8a7791, r8a7792, r8a7793, r8a7794,
r8a7795, r8a7796, r8a77995)
- "extalr" (r8a7795, r8a7796)
r8a7795, r8a7796, r8a77970, r8a77995)
- "extalr" (r8a7795, r8a7796, r8a77970)
- "usb_extal" (r8a7743, r8a7745, r8a7790, r8a7791, r8a7793, r8a7794)
- #clock-cells: Must be 2

4
Documentation/devicetree/bindings/clock/renesas,rz-cpg-clocks.txt
View File

@ -1,6 +1,6 @@
* Renesas RZ Clock Pulse Generator (CPG)
* Renesas RZ/A1 Clock Pulse Generator (CPG)
The CPG generates core clocks for the RZ SoCs. It includes the PLL, variable
The CPG generates core clocks for the RZ/A1 SoCs. It includes the PLL, variable
CPU and GPU clocks, and several fixed ratio dividers.
The CPG also provides a Clock Domain for SoC devices, in combination with the
CPG Module Stop (MSTP) Clocks.

17
Documentation/devicetree/bindings/display/google,goldfish-fb.txt Normal file
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@ -0,0 +1,17 @@
Android Goldfish framebuffer
Android Goldfish framebuffer device used by Android emulator.
Required properties:
- compatible : should contain "google,goldfish-fb"
- reg : <registers mapping>
- interrupts : <interrupt mapping>
Example:
display-controller@1f008000 {
compatible = "google,goldfish-fb";
interrupts = <0x10>;
reg = <0x1f008000 0x100>;
};

2
Documentation/devicetree/bindings/display/imx/fsl-imx-drm.txt
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@ -129,7 +129,7 @@ Optional properties:
example:
display@di0 {
disp0 {
compatible = "fsl,imx-parallel-display";
edid = [edid-data];
interface-pix-fmt = "rgb24";

4
Documentation/devicetree/bindings/hwmon/jc42.txt
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@ -34,6 +34,10 @@ Required properties:
- reg: I2C address
Optional properties:
- smbus-timeout-disable: When set, the smbus timeout function will be disabled.
This is not supported on all chips.
Example:
temp-sensor@1a {

7
Documentation/devicetree/bindings/mtd/cadence-quadspi.txt
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@ -1,7 +1,9 @@
* Cadence Quad SPI controller
Required properties:
- compatible : Should be "cdns,qspi-nor".
- compatible : should be one of the following:
Generic default - "cdns,qspi-nor".
For TI 66AK2G SoC - "ti,k2g-qspi", "cdns,qspi-nor".
- reg : Contains two entries, each of which is a tuple consisting of a
physical address and length. The first entry is the address and
length of the controller register set. The second entry is the
@ -14,6 +16,9 @@ Required properties:
Optional properties:
- cdns,is-decoded-cs : Flag to indicate whether decoder is used or not.
- cdns,rclk-en : Flag to indicate that QSPI return clock is used to latch
the read data rather than the QSPI clock. Make sure that QSPI return
clock is populated on the board before using this property.
Optional subnodes:
Subnodes of the Cadence Quad SPI controller are spi slave nodes with additional

2
Documentation/devicetree/bindings/mtd/denali-nand.txt
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@ -29,7 +29,7 @@ nand: nand@ff900000 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "altr,socfpga-denali-nand";
reg = <0xff900000 0x100000>, <0xffb80000 0x10000>;
reg = <0xff900000 0x20>, <0xffb80000 0x1000>;
reg-names = "nand_data", "denali_reg";
interrupts = <0 144 4>;
};

1
Documentation/devicetree/bindings/mtd/jedec,spi-nor.txt
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@ -14,6 +14,7 @@ Required properties:
at25df641
at26df081a
en25s64
mr25h128
mr25h256
mr25h10
mr25h40

15
Documentation/devicetree/bindings/mtd/mtk-quadspi.txt
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@ -1,13 +1,16 @@
* Serial NOR flash controller for MTK MT81xx (and similar)
Required properties:
- compatible: The possible values are:
"mediatek,mt2701-nor"
"mediatek,mt7623-nor"
- compatible: For mt8173, compatible should be "mediatek,mt8173-nor",
and it's the fallback compatible for other Soc.
For every other SoC, should contain both the SoC-specific compatible
string and "mediatek,mt8173-nor".
The possible values are:
"mediatek,mt2701-nor", "mediatek,mt8173-nor"
"mediatek,mt2712-nor", "mediatek,mt8173-nor"
"mediatek,mt7622-nor", "mediatek,mt8173-nor"
"mediatek,mt7623-nor", "mediatek,mt8173-nor"
"mediatek,mt8173-nor"
For mt8173, compatible should be "mediatek,mt8173-nor".
For every other SoC, should contain both the SoC-specific compatible string
and "mediatek,mt8173-nor".
- reg: physical base address and length of the controller's register
- clocks: the phandle of the clocks needed by the nor controller
- clock-names: the names of the clocks

4
Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt
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@ -5,9 +5,13 @@ Required properties:
- compatible: Should be set to one of the following:
marvell,pxa3xx-nand
marvell,armada370-nand
marvell,armada-8k-nand
- reg: The register base for the controller
- interrupts: The interrupt to map
- #address-cells: Set to <1> if the node includes partitions
- marvell,system-controller: Set to retrieve the syscon node that handles
NAND controller related registers (only required
with marvell,armada-8k-nand compatible).
Optional properties:

1
Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.txt
View File

@ -9,6 +9,7 @@ Required Properties:
- "renesas,pwm-r8a7794": for R-Car E2
- "renesas,pwm-r8a7795": for R-Car H3
- "renesas,pwm-r8a7796": for R-Car M3-W
- "renesas,pwm-r8a77995": for R-Car D3
- reg: base address and length of the registers block for the PWM.
- #pwm-cells: should be 2. See pwm.txt in this directory for a description of
the cells format.

1
Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt
View File

@ -10,6 +10,7 @@ on the Qualcomm Hexagon core.
"qcom,q6v5-pil",
"qcom,msm8916-mss-pil",
"qcom,msm8974-mss-pil"
"qcom,msm8996-mss-pil"
- reg:
Usage: required

14
Documentation/devicetree/bindings/rtc/imxdi-rtc.txt
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@ -1,20 +1,20 @@
* i.MX25 Real Time Clock controller
This binding supports the following chips: i.MX25, i.MX53
Required properties:
- compatible: should be: "fsl,imx25-rtc"
- reg: physical base address of the controller and length of memory mapped
region.
- clocks: should contain the phandle for the rtc clock
- interrupts: rtc alarm interrupt
Optional properties:
- interrupts: dryice security violation interrupt
- interrupts: dryice security violation interrupt (second entry)
Example:
rtc@80056000 {
compatible = "fsl,imx53-rtc", "fsl,imx25-rtc";
reg = <0x80056000 2000>;
interrupts = <29 56>;
rtc@53ffc000 {
compatible = "fsl,imx25-rtc";
reg = <0x53ffc000 0x4000>;
clocks = <&clks 81>;
interrupts = <25 56>;
};

17
Documentation/devicetree/bindings/rtc/pcf85363.txt Normal file
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@ -0,0 +1,17 @@
NXP PCF85363 Real Time Clock
============================
Required properties:
- compatible: Should contain "nxp,pcf85363".
- reg: I2C address for chip.
Optional properties:
- interrupts: IRQ line for the RTC (not implemented).
Example:
pcf85363: pcf85363@51 {
compatible = "nxp,pcf85363";
reg = <0x51>;
};

21
Documentation/devicetree/bindings/rtc/rtc-mt7622.txt Normal file
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@ -0,0 +1,21 @@
Device-Tree bindings for MediaTek SoC based RTC
Required properties:
- compatible : Should be
"mediatek,mt7622-rtc", "mediatek,soc-rtc" : for MT7622 SoC
- reg : Specifies base physical address and size of the registers;
- interrupts : Should contain the interrupt for RTC alarm;
- clocks : Specifies list of clock specifiers, corresponding to
entries in clock-names property;
- clock-names : Should contain "rtc" entries
Example:
rtc: rtc@10212800 {
compatible = "mediatek,mt7622-rtc",
"mediatek,soc-rtc";
reg = <0 0x10212800 0 0x200>;
interrupts = <GIC_SPI 129 IRQ_TYPE_LEVEL_LOW>;
clocks = <&topckgen CLK_TOP_RTC>;
clock-names = "rtc";
};

27
Documentation/devicetree/bindings/rtc/sprd,sc27xx-rtc.txt Normal file
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@ -0,0 +1,27 @@
Spreadtrum SC27xx Real Time Clock
Required properties:
- compatible: should be "sprd,sc2731-rtc".
- reg: address offset of rtc register.
- interrupt-parent: phandle for the interrupt controller.
- interrupts: rtc alarm interrupt.
Example:
sc2731_pmic: pmic@0 {
compatible = "sprd,sc2731";
reg = <0>;
spi-max-frequency = <26000000>;
interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
interrupt-controller;
#interrupt-cells = <2>;
#address-cells = <1>;
#size-cells = <0>;
rtc@280 {
compatible = "sprd,sc2731-rtc";
reg = <0x280>;
interrupt-parent = <&sc2731_pmic>;
interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
};
};

10
Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt
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@ -39,6 +39,14 @@ of these nodes are defined by the individual bindings for the specific function
Definition: a list of channels tied to this function, used for matching
the function to a set of virtual channels
- qcom,intents:
Usage: optional
Value type: <prop-encoded-array>
Definition: a list of size,amount pairs describing what intents should
be preallocated for this virtual channel. This can be used
to tweak the default intents available for the channel to
meet expectations of the remote.
= EXAMPLE
The following example represents the GLINK RPM node on a MSM8996 device, with
the function for the "rpm_request" channel defined, which is used for
@ -69,6 +77,8 @@ regualtors and root clocks.
compatible = "qcom,rpm-msm8996";
qcom,glink-channels = "rpm_requests";
qcom,intents = <0x400 5
0x800 1>;
...
};
};

20
Documentation/devicetree/bindings/thermal/brcm,avs-tmon.txt Normal file
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@ -0,0 +1,20 @@
* Broadcom STB thermal management
Thermal management core, provided by the AVS TMON hardware block.
Required properties:
- compatible: must be "brcm,avs-tmon" and/or "brcm,avs-tmon-bcm7445"
- reg: address range for the AVS TMON registers
- interrupts: temperature monitor interrupt, for high/low threshold triggers
- interrupt-names: should be "tmon"
- interrupt-parent: the parent interrupt controller
Example:
thermal@f04d1500 {
compatible = "brcm,avs-tmon-bcm7445", "brcm,avs-tmon";
reg = <0xf04d1500 0x28>;
interrupts = <0x6>;
interrupt-names = "tmon";
interrupt-parent = <&avs_host_l2_intc>;
};

7
Documentation/devicetree/bindings/thermal/imx-thermal.txt
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@ -7,10 +7,17 @@ Required properties:
is higher than panic threshold, system will auto reboot by SRC module.
- fsl,tempmon : phandle pointer to system controller that contains TEMPMON
control registers, e.g. ANATOP on imx6q.
- nvmem-cells: A phandle to the calibration cells provided by ocotp.
- nvmem-cell-names: Should be "calib", "temp_grade".
Deprecated properties:
- fsl,tempmon-data : phandle pointer to fuse controller that contains TEMPMON
calibration data, e.g. OCOTP on imx6q. The details about calibration data
can be found in SoC Reference Manual.
Direct access to OCOTP via fsl,tempmon-data is incorrect on some newer chips
because it does not handle OCOTP clock requirements.
Optional properties:
- clocks : thermal sensor's clock source.

1
Documentation/devicetree/bindings/thermal/rockchip-thermal.txt
View File

@ -2,6 +2,7 @@
Required properties:
- compatible : should be "rockchip,<name>-tsadc"
"rockchip,rv1108-tsadc": found on RV1108 SoCs
"rockchip,rk3228-tsadc": found on RK3228 SoCs
"rockchip,rk3288-tsadc": found on RK3288 SoCs
"rockchip,rk3328-tsadc": found on RK3328 SoCs

3
Documentation/devicetree/bindings/trivial-devices.txt
View File

@ -55,7 +55,6 @@ epson,rx8010 I2C-BUS INTERFACE REAL TIME CLOCK MODULE
epson,rx8581 I2C-BUS INTERFACE REAL TIME CLOCK MODULE
emmicro,em3027 EM Microelectronic EM3027 Real-time Clock
fsl,mag3110 MAG3110: Xtrinsic High Accuracy, 3D Magnetometer
fsl,mc13892 MC13892: Power Management Integrated Circuit (PMIC) for i.MX35/51
fsl,mma7660 MMA7660FC: 3-Axis Orientation/Motion Detection Sensor
fsl,mma8450 MMA8450Q: Xtrinsic Low-power, 3-axis Xtrinsic Accelerometer
fsl,mpl3115 MPL3115: Absolute Digital Pressure Sensor
@ -73,7 +72,6 @@ maxim,ds1050 5 Bit Programmable, Pulse-Width Modulator
maxim,max1237 Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs
maxim,max6621 PECI-to-I2C translator for PECI-to-SMBus/I2C protocol conversion
maxim,max6625 9-Bit/12-Bit Temperature Sensors with I²C-Compatible Serial Interface
mc,rv3029c2 Real Time Clock Module with I2C-Bus
mcube,mc3230 mCube 3-axis 8-bit digital accelerometer
memsic,mxc6225 MEMSIC 2-axis 8-bit digital accelerometer
microchip,mcp4531-502 Microchip 7-bit Single I2C Digital Potentiometer (5k)
@ -142,6 +140,7 @@ microchip,mcp4662-503 Microchip 8-bit Dual I2C Digital Potentiometer with NV Mem
microchip,mcp4662-104 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (100k)
microchip,tc654 PWM Fan Speed Controller With Fan Fault Detection
microchip,tc655 PWM Fan Speed Controller With Fan Fault Detection
microcrystal,rv3029 Real Time Clock Module with I2C-Bus
miramems,da226 MiraMEMS DA226 2-axis 14-bit digital accelerometer
miramems,da280 MiraMEMS DA280 3-axis 14-bit digital accelerometer
miramems,da311 MiraMEMS DA311 3-axis 12-bit digital accelerometer

33
Documentation/devicetree/bindings/usb/usb-device.txt
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@ -4,24 +4,35 @@ Usually, we only use device tree for hard wired USB device.
The reference binding doc is from:
http://www.devicetree.org/open-firmware/bindings/usb/usb-1_0.ps
Required properties:
- compatible: usbVID,PID. The textual representation of VID, PID shall
be in lower case hexadecimal with leading zeroes suppressed. The
other compatible strings from the above standard binding could also
be used, but a device adhering to this binding may leave out all except
for usbVID,PID.
- reg: the port number which this device is connecting to, the range
is 1-31.
- compatible: "usbVID,PID", where VID is the vendor id and PID the product id.
The textual representation of VID and PID shall be in lower case hexadecimal
with leading zeroes suppressed. The other compatible strings from the above
standard binding could also be used, but a device adhering to this binding
may leave out all except for "usbVID,PID".
- reg: the number of the USB hub port or the USB host-controller port to which
this device is attached. The range is 1-255.
Required properties for hub nodes with device nodes:
- #address-cells: shall be 1
- #size-cells: shall be 0
Required properties for host-controller nodes with device nodes:
- #address-cells: shall be 1
- #size-cells: shall be 0
Example:
&usb1 {
&usb1 { /* host controller */
#address-cells = <1>;
#size-cells = <0>;
hub: genesys@1 {
hub@1 { /* hub connected to port 1 */
compatible = "usb5e3,608";
reg = <1>;
};
}
};

1
Documentation/driver-model/devres.txt
View File

@ -237,6 +237,7 @@ CLOCK
devm_clk_get()
devm_clk_put()
devm_clk_hw_register()
devm_of_clk_add_hw_provider()
DMA
dmam_alloc_coherent()

42
Documentation/filesystems/cramfs.txt
View File

@ -45,6 +45,48 @@ you can just change the #define in mkcramfs.c, so long as you don't
mind the filesystem becoming unreadable to future kernels.
Memory Mapped cramfs image
--------------------------
The CRAMFS_MTD Kconfig option adds support for loading data directly from
a physical linear memory range (usually non volatile memory like Flash)
instead of going through the block device layer. This saves some memory
since no intermediate buffering is necessary to hold the data before
decompressing.
And when data blocks are kept uncompressed and properly aligned, they will
automatically be mapped directly into user space whenever possible providing
eXecute-In-Place (XIP) from ROM of read-only segments. Data segments mapped
read-write (hence they have to be copied to RAM) may still be compressed in
the cramfs image in the same file along with non compressed read-only
segments. Both MMU and no-MMU systems are supported. This is particularly
handy for tiny embedded systems with very tight memory constraints.
The location of the cramfs image in memory is system dependent. You must
know the proper physical address where the cramfs image is located and
configure an MTD device for it. Also, that MTD device must be supported
by a map driver that implements the "point" method. Examples of such
MTD drivers are cfi_cmdset_0001 (Intel/Sharp CFI flash) or physmap
(Flash device in physical memory map). MTD partitions based on such devices
are fine too. Then that device should be specified with the "mtd:" prefix
as the mount device argument. For example, to mount the MTD device named
"fs_partition" on the /mnt directory:
$ mount -t cramfs mtd:fs_partition /mnt
To boot a kernel with this as root filesystem, suffice to specify
something like "root=mtd:fs_partition" on the kernel command line.
Tools
-----
A version of mkcramfs that can take advantage of the latest capabilities
described above can be found here:
https://github.com/npitre/cramfs-tools
For /usr/share/magic
--------------------

4
Documentation/filesystems/porting
View File

@ -501,10 +501,6 @@ in your dentry operations instead.
is non-NULL. Note that link body isn't available anymore, so if you need it,
store it as cookie.
--
[mandatory]
__fd_install() & fd_install() can now sleep. Callers should not
hold a spinlock or other resources that do not allow a schedule.
--
[mandatory]
any symlink that might use page_follow_link_light/page_put_link() must
have inode_nohighmem(inode) called before anything might start playing with

3
Documentation/filesystems/proc.txt
View File

@ -181,6 +181,7 @@ read the file /proc/PID/status:
VmPTE: 20 kb
VmSwap: 0 kB
HugetlbPages: 0 kB
CoreDumping: 0
Threads: 1
SigQ: 0/28578
SigPnd: 0000000000000000
@ -253,6 +254,8 @@ Table 1-2: Contents of the status files (as of 4.8)
VmSwap amount of swap used by anonymous private data
(shmem swap usage is not included)
HugetlbPages size of hugetlb memory portions
CoreDumping process's memory is currently being dumped
(killing the process may lead to a corrupted core)
Threads number of threads
SigQ number of signals queued/max. number for queue
SigPnd bitmap of pending signals for the thread

10
Documentation/gpu/todo.rst
View File

@ -409,5 +409,15 @@ those drivers as simple as possible, so lots of room for refactoring:
Contact: Noralf Trønnes, Daniel Vetter
AMD DC Display Driver
---------------------
AMD DC is the display driver for AMD devices starting with Vega. There has been
a bunch of progress cleaning it up but there's still plenty of work to be done.
See drivers/gpu/drm/amd/display/TODO for tasks.
Contact: Harry Wentland, Alex Deucher
Outside DRM
===========

2
Documentation/ia64/xen.txt
View File

@ -41,7 +41,7 @@ Getting and Building Xen and Dom0
5. make initrd for Dom0/DomU
# make -C linux-2.6.18-xen.hg ARCH=ia64 modules_install \
O=$(/bin/pwd)/build-linux-2.6.18-xen_ia64
O=$(pwd)/build-linux-2.6.18-xen_ia64
# mkinitrd -f /boot/efi/efi/redhat/initrd-2.6.18.8-xen.img \
2.6.18.8-xen --builtin mptspi --builtin mptbase \
--builtin mptscsih --builtin uhci-hcd --builtin ohci-hcd \

3
Documentation/power/runtime_pm.txt
View File

@ -435,8 +435,7 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h:
PM status to 'suspended' and update its parent's counter of 'active'
children as appropriate (it is only valid to use this function if
'power.runtime_error' is set or 'power.disable_depth' is greater than
zero); it will fail and return an error code if the device has a child
which is active and the 'power.ignore_children' flag is unset
zero)
bool pm_runtime_active(struct device *dev);
- return true if the device's runtime PM status is 'active' or its

31
Documentation/printk-formats.txt
View File

@ -5,7 +5,6 @@ How to get printk format specifiers right
:Author: Randy Dunlap <rdunlap@infradead.org>
:Author: Andrew Murray <amurray@mpc-data.co.uk>
Integer types
=============
@ -45,6 +44,18 @@ return from vsnprintf.
Raw pointer value SHOULD be printed with %p. The kernel supports
the following extended format specifiers for pointer types:
Pointer Types
=============
Pointers printed without a specifier extension (i.e unadorned %p) are
hashed to give a unique identifier without leaking kernel addresses to user
space. On 64 bit machines the first 32 bits are zeroed. If you _really_
want the address see %px below.
::
%p abcdef12 or 00000000abcdef12
Symbols/Function Pointers
=========================
@ -85,18 +96,32 @@ Examples::
printk("Faulted at %pS\n", (void *)regs->ip);
printk(" %s%pB\n", (reliable ? "" : "? "), (void *)*stack);
Kernel Pointers
===============
::
%pK 0x01234567 or 0x0123456789abcdef
%pK 01234567 or 0123456789abcdef
For printing kernel pointers which should be hidden from unprivileged
users. The behaviour of ``%pK`` depends on the ``kptr_restrict sysctl`` - see
Documentation/sysctl/kernel.txt for more details.
Unmodified Addresses
====================
::
%px 01234567 or 0123456789abcdef
For printing pointers when you _really_ want to print the address. Please
consider whether or not you are leaking sensitive information about the
Kernel layout in memory before printing pointers with %px. %px is
functionally equivalent to %lx. %px is preferred to %lx because it is more
uniquely grep'able. If, in the future, we need to modify the way the Kernel
handles printing pointers it will be nice to be able to find the call
sites.
Struct Resources
================

5
Documentation/process/5.Posting.rst
View File

@ -213,6 +213,11 @@ The tags in common use are:
which can be found in Documentation/process/submitting-patches.rst. Code without a
proper signoff cannot be merged into the mainline.
- Co-Developed-by: states that the patch was also created by another developer
along with the original author. This is useful at times when multiple
people work on a single patch. Note, this person also needs to have a
Signed-off-by: line in the patch as well.
- Acked-by: indicates an agreement by another developer (often a
maintainer of the relevant code) that the patch is appropriate for
inclusion into the kernel.

13
Documentation/scheduler/sched-deadline.txt
View File

@ -204,10 +204,17 @@ CONTENTS
It does so by decrementing the runtime of the executing task Ti at a pace equal
to
dq = -max{ Ui, (1 - Uinact) } dt
dq = -max{ Ui / Umax, (1 - Uinact - Uextra) } dt
where Uinact is the inactive utilization, computed as (this_bq - running_bw),
and Ui is the bandwidth of task Ti.
where:
- Ui is the bandwidth of task Ti;
- Umax is the maximum reclaimable utilization (subjected to RT throttling
limits);
- Uinact is the (per runqueue) inactive utilization, computed as
(this_bq - running_bw);
- Uextra is the (per runqueue) extra reclaimable utilization
(subjected to RT throttling limits).
Let's now see a trivial example of two deadline tasks with runtime equal

10
Documentation/security/keys/core.rst
View File

@ -628,12 +628,12 @@ The keyctl syscall functions are:
defined key type will return its data as is. If a key type does not
implement this function, error EOPNOTSUPP will result.
As much of the data as can be fitted into the buffer will be copied to
userspace if the buffer pointer is not NULL.
On a successful return, the function will always return the amount of data
available rather than the amount copied.
If the specified buffer is too small, then the size of the buffer required
will be returned. Note that in this case, the contents of the buffer may
have been overwritten in some undefined way.
Otherwise, on success, the function will return the amount of data copied
into the buffer.
* Instantiate a partially constructed key::

57
Documentation/svga.txt
View File

@ -67,8 +67,7 @@ The menu looks like::
<name-of-detected-video-adapter> tells what video adapter did Linux detect
-- it's either a generic adapter name (MDA, CGA, HGC, EGA, VGA, VESA VGA [a VGA
with VESA-compliant BIOS]) or a chipset name (e.g., Trident). Direct detection
of chipsets is turned off by default (see CONFIG_VIDEO_SVGA in chapter 4 to see
how to enable it if you really want) as it's inherently unreliable due to
of chipsets is turned off by default as it's inherently unreliable due to
absolutely insane PC design.
"0 0F00 80x25" means that the first menu item (the menu items are numbered
@ -138,7 +137,7 @@ The ID numbers can be divided to those regions::
0x0f05 VGA 80x30 (480 scans, 16-point font)
0x0f06 VGA 80x34 (480 scans, 14-point font)
0x0f07 VGA 80x60 (480 scans, 8-point font)
0x0f08 Graphics hack (see the CONFIG_VIDEO_HACK paragraph below)
0x0f08 Graphics hack (see the VIDEO_GFX_HACK paragraph below)
0x1000 to 0x7fff - modes specified by resolution. The code has a "0xRRCC"
form where RR is a number of rows and CC is a number of columns.
@ -160,58 +159,22 @@ end of the display.
Options
~~~~~~~
Some options can be set in the source text (in arch/i386/boot/video.S).
All of them are simple #define's -- change them to #undef's when you want to
switch them off. Currently supported:
Build options for arch/x86/boot/* are selected by the kernel kconfig
utility and the kernel .config file.
CONFIG_VIDEO_SVGA - enables autodetection of SVGA cards. This is switched
off by default as it's a bit unreliable due to terribly bad PC design. If you
really want to have the adapter autodetected (maybe in case the ``scan`` feature
doesn't work on your machine), switch this on and don't cry if the results
are not completely sane. In case you really need this feature, please drop me
a mail as I think of removing it some day.
CONFIG_VIDEO_VESA - enables autodetection of VESA modes. If it doesn't work
on your machine (or displays a "Error: Scanning of VESA modes failed" message),
you can switch it off and report as a bug.
CONFIG_VIDEO_COMPACT - enables compacting of the video mode list. If there
are more modes with the same screen size, only the first one is kept (see above
for more info on mode ordering). However, in very strange cases it's possible
that the first "version" of the mode doesn't work although some of the others
do -- in this case turn this switch off to see the rest.
CONFIG_VIDEO_RETAIN - enables retaining of screen contents when switching
video modes. Works only with some boot loaders which leave enough room for the
buffer. (If you have old LILO, you can adjust heap_end_ptr and loadflags
in setup.S, but it's better to upgrade the boot loader...)
CONFIG_VIDEO_LOCAL - enables inclusion of "local modes" in the list. The
local modes are added automatically to the beginning of the list not depending
on hardware configuration. The local modes are listed in the source text after
the "local_mode_table:" line. The comment before this line describes the format
of the table (which also includes a video card name to be displayed on the
top of the menu).
CONFIG_VIDEO_400_HACK - force setting of 400 scan lines for standard VGA
modes. This option is intended to be used on certain buggy BIOSes which draw
some useless logo using font download and then fail to reset the correct mode.
Don't use unless needed as it forces resetting the video card.
CONFIG_VIDEO_GFX_HACK - includes special hack for setting of graphics modes
to be used later by special drivers (e.g., 800x600 on IBM ThinkPad -- see
ftp://ftp.phys.keio.ac.jp/pub/XFree86/800x600/XF86Configs/XF86Config.IBM_TP560).
VIDEO_GFX_HACK - includes special hack for setting of graphics modes
to be used later by special drivers.
Allows to set _any_ BIOS mode including graphic ones and forcing specific
text screen resolution instead of peeking it from BIOS variables. Don't use
unless you think you know what you're doing. To activate this setup, use
mode number 0x0f08 (see section 3).
mode number 0x0f08 (see the Mode IDs section above).
Still doesn't work?
~~~~~~~~~~~~~~~~~~~
When the mode detection doesn't work (e.g., the mode list is incorrect or
the machine hangs instead of displaying the menu), try to switch off some of
the configuration options listed in section 4. If it fails, you can still use
the configuration options listed under "Options". If it fails, you can still use
your kernel with the video mode set directly via the kernel parameter.
In either case, please send me a bug report containing what _exactly_
@ -228,10 +191,6 @@ contains the most common video BIOS bug called "incorrect vertical display
end setting". Adding 0x8000 to the mode ID might fix the problem. Unfortunately,
this must be done manually -- no autodetection mechanisms are available.
If you have a VGA card and your display still looks as on EGA, your BIOS
is probably broken and you need to set the CONFIG_VIDEO_400_HACK switch to
force setting of the correct mode.
History
~~~~~~~

12
Documentation/switchtec.txt
View File

@ -78,3 +78,15 @@ The following IOCTLs are also supported by the device:
between PCI Function Framework number (used by the event system)
and Switchtec Logic Port ID and Partition number (which is more
user friendly).
Non-Transparent Bridge (NTB) Driver
===================================
An NTB driver is provided for the switchtec hardware in switchtec_ntb.
Currently, it only supports switches configured with exactly 2
partitions. It also requires the following configuration settings:
* Both partitions must be able to access each other's GAS spaces.
Thus, the bits in the GAS Access Vector under Management Settings
must be set to support this.

9
Documentation/sysctl/vm.txt
View File

@ -158,10 +158,6 @@ Note: the minimum value allowed for dirty_bytes is two pages (in bytes); any
value lower than this limit will be ignored and the old configuration will be
retained.
Note: the value of dirty_bytes also must be set greater than
dirty_background_bytes or the amount of memory corresponding to
dirty_background_ratio.
==============================================================
dirty_expire_centisecs
@ -181,9 +177,6 @@ generating disk writes will itself start writing out dirty data.
The total available memory is not equal to total system memory.
Note: dirty_ratio must be set greater than dirty_background_ratio or
ratio corresponding to dirty_background_bytes.
==============================================================
dirty_writeback_centisecs
@ -818,7 +811,7 @@ tooling to work, you can do:
swappiness
This control is used to define how aggressive the kernel will swap
memory pages. Higher values will increase agressiveness, lower values
memory pages. Higher values will increase aggressiveness, lower values
decrease the amount of swap. A value of 0 instructs the kernel not to
initiate swap until the amount of free and file-backed pages is less
than the high water mark in a zone.

164
Documentation/translations/ko_KR/memory-barriers.txt
View File

@ -82,7 +82,7 @@ Documentation/memory-barriers.txt
- SMP 배리어 짝맞추기.
- 메모리 배리어 시퀀스의 예.
- 읽기 메모리 배리어 vs 로드 예측.
- 이행성
- Multicopy 원자성.
(*) 명시적 커널 배리어.
@ -656,6 +656,11 @@ Documentation/RCU/rcu_dereference.txt 파일을 주의 깊게 읽어 주시기
해줍니다.
데이터 의존성에 의해 제공되는 이 순서규칙은 이를 포함하고 있는 CPU 에
지역적임을 알아두시기 바랍니다. 더 많은 정보를 위해선 "Multicopy 원자성"
섹션을 참고하세요.
데이터 의존성 배리어는 매우 중요한데, 예를 들어 RCU 시스템에서 그렇습니다.
include/linux/rcupdate.h 의 rcu_assign_pointer() 와 rcu_dereference() 를
참고하세요. 여기서 데이터 의존성 배리어는 RCU 로 관리되는 포인터의 타겟을 현재
@ -864,38 +869,10 @@ CPU 는 b 로부터의 로드 오퍼레이션이 a 로부터의 로드 오퍼레
주어진 if 문의 then 절과 else 절에게만 (그리고 이 두 절 내에서 호출되는
함수들에게까지) 적용되지, 이 if 문을 뒤따르는 코드에는 적용되지 않습니다.
마지막으로, 컨트롤 의존성은 이행성 (transitivity) 을 제공하지 -않습니다-. 이건
'x' 와 'y' 가 둘 다 0 이라는 초기값을 가졌다는 가정 하의 두개의 예제로
보이겠습니다:
CPU 0 CPU 1
======================= =======================
r1 = READ_ONCE(x); r2 = READ_ONCE(y);
if (r1 > 0) if (r2 > 0)
WRITE_ONCE(y, 1); WRITE_ONCE(x, 1);
컨트롤 의존성에 의해 제공되는 이 순서규칙은 이를 포함하고 있는 CPU 에
지역적입니다. 더 많은 정보를 위해선 "Multicopy 원자성" 섹션을 참고하세요.
assert(!(r1 == 1 && r2 == 1));
이 두 CPU 예제에서 assert() 의 조건은 항상 참일 것입니다. 그리고, 만약 컨트롤
의존성이 이행성을 (실제로는 그러지 않지만) 보장한다면, 다음의 CPU 가 추가되어도
아래의 assert() 조건은 참이 될것입니다:
CPU 2
=====================
WRITE_ONCE(x, 2);
assert(!(r1 == 2 && r2 == 1 && x == 2)); /* FAILS!!! */
하지만 컨트롤 의존성은 이행성을 제공하지 -않기- 때문에, 세개의 CPU 예제가 실행
완료된 후에 위의 assert() 의 조건은 거짓으로 평가될 수 있습니다. 세개의 CPU
예제가 순서를 지키길 원한다면, CPU 0 와 CPU 1 코드의 로드와 스토어 사이, "if"
문 바로 다음에 smp_mb()를 넣어야 합니다. 더 나아가서, 최초의 두 CPU 예제는
매우 위험하므로 사용되지 않아야 합니다.
이 두개의 예제는 다음 논문:
http://www.cl.cam.ac.uk/users/pes20/ppc-supplemental/test6.pdf 와
이 사이트: https://www.cl.cam.ac.uk/~pes20/ppcmem/index.html 에 나온 LB 와 WWC
리트머스 테스트입니다.
요약하자면:
@ -930,8 +907,8 @@ http://www.cl.cam.ac.uk/users/pes20/ppc-supplemental/test6.pdf 와
(*) 컨트롤 의존성은 보통 다른 타입의 배리어들과 짝을 맞춰 사용됩니다.
(*) 컨트롤 의존성은 이행성을 제공하지 -않습니다-. 이행성이 필요하다면,
smp_mb() 를 사용하세요.
(*) 컨트롤 의존성은 multicopy 원자성을 제공하지 -않습니다-. 모든 CPU 들이
특정 스토어를 동시에 보길 원한다면, smp_mb() 를 사용하세요.
(*) 컴파일러는 컨트롤 의존성을 이해하고 있지 않습니다. 따라서 컴파일러가
여러분의 코드를 망가뜨리지 않도록 하는건 여러분이 해야 하는 일입니다.
@ -943,13 +920,14 @@ SMP 배리어 짝맞추기
CPU 간 상호작용을 다룰 때에 일부 타입의 메모리 배리어는 항상 짝을 맞춰
사용되어야 합니다. 적절하게 짝을 맞추지 않은 코드는 사실상 에러에 가깝습니다.
범용 배리어들은 범용 배리어끼리도 짝을 맞추지만 이행성이 없는 대부분의 다른
타입의 배리어들과도 짝을 맞춥니다. ACQUIRE 배리어는 RELEASE 배리어와 짝을
맞춥니다만, 둘 다 범용 배리어를 포함해 다른 배리어들과도 짝을 맞출 수 있습니다.
쓰기 배리어는 데이터 의존성 배리어나 컨트롤 의존성, ACQUIRE 배리어, RELEASE
배리어, 읽기 배리어, 또는 범용 배리어와 짝을 맞춥니다. 비슷하게 읽기 배리어나
컨트롤 의존성, 또는 데이터 의존성 배리어는 쓰기 배리어나 ACQUIRE 배리어,
RELEASE 배리어, 또는 범용 배리어와 짝을 맞추는데, 다음과 같습니다:
범용 배리어들은 범용 배리어끼리도 짝을 맞추지만 multicopy 원자성이 없는
대부분의 다른 타입의 배리어들과도 짝을 맞춥니다. ACQUIRE 배리어는 RELEASE
배리어와 짝을 맞춥니다만, 둘 다 범용 배리어를 포함해 다른 배리어들과도 짝을
맞출 수 있습니다. 쓰기 배리어는 데이터 의존성 배리어나 컨트롤 의존성, ACQUIRE
배리어, RELEASE 배리어, 읽기 배리어, 또는 범용 배리어와 짝을 맞춥니다.
비슷하게 읽기 배리어나 컨트롤 의존성, 또는 데이터 의존성 배리어는 쓰기 배리어나
ACQUIRE 배리어, RELEASE 배리어, 또는 범용 배리어와 짝을 맞추는데, 다음과
같습니다:
CPU 1 CPU 2
=============== ===============
@ -975,7 +953,7 @@ RELEASE 배리어, 또는 범용 배리어와 짝을 맞추는데, 다음과 같
=============== ===============================
r1 = READ_ONCE(y);
<범용 배리어>
WRITE_ONCE(y, 1); if (r2 = READ_ONCE(x)) {
WRITE_ONCE(x, 1); if (r2 = READ_ONCE(x)) {
<묵시적 컨트롤 의존성>
WRITE_ONCE(y, 1);
}
@ -1361,57 +1339,74 @@ A 의 로드 두개가 모두 B 의 로드 뒤에 있지만, 서로 다른 값
: : +-------+
이행성
------
MULTICOPY 원자성
----------------
이행성(transitivity)은 실제의 컴퓨터 시스템에서 항상 제공되지는 않는, 순서
맞추기에 대한 상당히 직관적인 개념입니다. 다음의 예가 이행성을 보여줍니다:
Multicopy 원자성은 실제의 컴퓨터 시스템에서 항상 제공되지는 않는, 순서 맞추기에
대한 상당히 직관적인 개념으로, 특정 스토어가 모든 CPU 들에게 동시에 보여지게
됨을, 달리 말하자면 모든 CPU 들이 모든 스토어들이 보여지는 순서를 동의하게 되는
것입니다. 하지만, 완전한 multicopy 원자성의 사용은 가치있는 하드웨어
최적화들을 무능하게 만들어버릴 수 있어서, 보다 완화된 형태의 ``다른 multicopy
원자성'' 라는 이름의, 특정 스토어가 모든 -다른- CPU 들에게는 동시에 보여지게
하는 보장을 대신 제공합니다. 이 문서의 뒷부분들은 이 완화된 형태에 대해 논하게
됩니다만, 단순히 ``multicopy 원자성'' 이라고 부르겠습니다.
다음의 예가 multicopy 원자성을 보입니다:
CPU 1 CPU 2 CPU 3
======================= ======================= =======================
{ X = 0, Y = 0 }
STORE X=1 LOAD X STORE Y=1
<범용 배리어> <범용 배리어>
LOAD Y LOAD X
STORE X=1 r1=LOAD X (reads 1) LOAD Y (reads 1)
<범용 배리어> <읽기 배리어>
STORE Y=r1 LOAD X
CPU 2 의 X 로드가 1을 리턴했고 Y 로드가 0을 리턴했다고 해봅시다. 이는 CPU 2 의
X 로드가 CPU 1 의 X 스토어 뒤에 이루어졌고 CPU 2 의 Y 로드는 CPU 3 의 Y 스토어
전에 이루어졌음을 의미합니다. 그럼 "CPU 3 의 X 로드는 0을 리턴할 수 있나요?"
CPU 2 의 Y 로의 스토어에 사용되는 X 로드의 결과가 1 이었고 CPU 3 의 Y 로드가
1을 리턴했다고 해봅시다. 이는 CPU 1 의 X 로의 스토어가 CPU 2 의 X 로부터의
로드를 앞서고 CPU 2 의 Y 로의 스토어가 CPU 3 의 Y 로부터의 로드를 앞섬을
의미합니다. 또한, 여기서의 메모리 배리어들은 CPU 2 가 자신의 로드를 자신의
스토어 전에 수행하고, CPU 3 가 Y 로부터의 로드를 X 로부터의 로드 전에 수행함을
보장합니다. 그럼 "CPU 3 의 X 로부터의 로드는 0 을 리턴할 수 있을까요?"
CPU 2 의 X 로드는 CPU 1 의 스토어 후에 이루어졌으니, CPU 3 의 X 로드는 1을
리턴하는게 자연스럽습니다. 이런 생각이 이행성의 한 예입니다: CPU A 에서 실행된
로드가 CPU B 에서의 같은 변수에 대한 로드를 뒤따른다면, CPU A 의 로드는 CPU B
의 로드가 내놓은 값과 같거나 그 후의 값을 내놓아야 합니다.
CPU 3 의 X 로드가 CPU 2 의 로드보다 뒤에 이루어졌으므로, CPU 3 의 X 로부터의
로드는 1 을 리턴한다고 예상하는게 당연합니다. 이런 예상은 multicopy
원자성으로부터 나옵니다: CPU B 에서 수행된 로드가 CPU A 의 같은 변수로부터의
로드를 뒤따른다면 (그리고 CPU A 가 자신이 읽은 값으로 먼저 해당 변수에 스토어
하지 않았다면) multicopy 원자성을 제공하는 시스템에서는, CPU B 의 로드가 CPU A
의 로드와 같은 값 또는 그 나중 값을 리턴해야만 합니다. 하지만, 리눅스 커널은
시스템들이 multicopy 원자성을 제공할 것을 요구하지 않습니다.
리눅스 커널에서 범용 배리어의 사용은 이행성을 보장합니다. 따라서, 앞의 예에서
CPU 2 의 X 로드가 1을, Y 로드는 0을 리턴했다면, CPU 3 의 X 로드는 반드시 1을
리턴합니다.
앞의 범용 메모리 배리어의 사용은 모든 multicopy 원자성의 부족을 보상해줍니다.
앞의 예에서, CPU 2 의 X 로부터의 로드가 1 을 리턴했고 CPU 3 의 Y 로부터의
로드가 1 을 리턴했다면, CPU 3 의 X 로부터의 로드는 1을 리턴해야만 합니다.
하지만, 읽기나 쓰기 배리어에 대해서는 이행성이 보장되지 -않습니다-. 예를 들어,
앞의 예에서 CPU 2 의 범용 배리어가 아래처럼 읽기 배리어로 바뀐 경우를 생각해
봅시다:
하지만, 의존성, 읽기 배리어, 쓰기 배리어는 항상 non-multicopy 원자성을 보상해
주지는 않습니다. 예를 들어, CPU 2 의 범용 배리어가 앞의 예에서 사라져서
아래처럼 데이터 의존성만 남게 되었다고 해봅시다:
CPU 1 CPU 2 CPU 3
======================= ======================= =======================
{ X = 0, Y = 0 }
STORE X=1 LOAD X STORE Y=1
<읽기 배리어> <범용 배리어>
LOAD Y LOAD X
STORE X=1 r1=LOAD X (reads 1) LOAD Y (reads 1)
<데이터 의존성> <읽기 배리어>
STORE Y=r1 LOAD X (reads 0)
이 코드는 이행성을 갖지 않습니다: 이 예에서는, CPU 2 의 X 로드가 1을
리턴하고, Y 로드는 0을 리턴하지만 CPU 3 의 X 로드가 0을 리턴하는 것도 완전히
합법적입니다.
이 변화는 non-multicopy 원자성이 만연하게 합니다: 이 예에서, CPU 2 의 X
로부터의 로드가 1을 리턴하고, CPU 3 의 Y 로부터의 로드가 1 을 리턴하는데, CPU 3
의 X 로부터의 로드가 0 을 리턴하는게 완전히 합법적입니다.
CPU 2 의 읽기 배리어가 자신의 읽기는 순서를 맞춰줘도, CPU 1 의 스토어와의
순서를 맞춰준다고는 보장할 수 없다는게 핵심입니다. 따라서, CPU 1 과 CPU 2 가
버퍼나 캐시를 공유하는 시스템에서 이 예제 코드가 실행된다면, CPU 2 는 CPU 1 이
쓴 값에 좀 빨리 접근할 수 있을 것입니다. 따라서 CPU 1 과 CPU 2 의 접근으로
조합된 순서를 모든 CPU 가 동의할 수 있도록 하기 위해 범용 배리어가 필요합니다.
핵심은, CPU 2 의 데이터 의존성이 자신의 로드와 스토어를 순서짓지만, CPU 1 의
스토어에 대한 순서는 보장하지 않는다는 것입니다. 따라서, 이 예제가 CPU 1 과
CPU 2 가 스토어 버퍼나 한 수준의 캐시를 공유하는, multicopy 원자성을 제공하지
않는 시스템에서 수행된다면 CPU 2 는 CPU 1 의 쓰기에 이른 접근을 할 수도
있습니다. 따라서, 모든 CPU 들이 여러 접근들의 조합된 순서에 대해서 동의하게
하기 위해서는 범용 배리어가 필요합니다.
범용 배리어는 "글로벌 이행성"을 제공해서, 모든 CPU 들이 오퍼레이션들의 순서에
동의하게 할 것입니다. 반면, release-acquire 조합은 "로컬 이행성" 만을
제공해서, 해당 조합이 사용된 CPU 들만이 해당 액세스들의 조합된 순서에 동의함이
보장됩니다. 예를 들어, 존경스런 Herman Hollerith 의 C 코드로 보면:
범용 배리어는 non-multicopy 원자성만 보상할 수 있는게 아니라, -모든- CPU 들이
-모든- 오퍼레이션들의 순서를 동일하게 인식하게 하는 추가적인 순서 보장을
만들어냅니다. 반대로, release-acquire 짝의 연결은 이런 추가적인 순서는
제공하지 않는데, 해당 연결에 들어있는 CPU 들만이 메모리 접근의 조합된 순서에
대해 동의할 것으로 보장됨을 의미합니다. 예를 들어, 존경스런 Herman Hollerith
의 코드를 C 코드로 변환하면:
int u, v, x, y, z;
@ -1444,8 +1439,7 @@ CPU 2 의 읽기 배리어가 자신의 읽기는 순서를 맞춰줘도, CPU 1
}
cpu0(), cpu1(), 그리고 cpu2() 는 smp_store_release()/smp_load_acquire() 쌍의
연결을 통한 로컬 이행성에 동참하고 있으므로, 다음과 같은 결과는 나오지 않을
겁니다:
연결에 참여되어 있으므로, 다음과 같은 결과는 나오지 않을 겁니다:
r0 == 1 && r1 == 1 && r2 == 1
@ -1454,8 +1448,9 @@ cpu0() 의 쓰기를 봐야만 하므로, 다음과 같은 결과도 없을 겁
r1 == 1 && r5 == 0
하지만, release-acquire 타동성은 동참한 CPU 들에만 적용되므로 cpu3() 에는
적용되지 않습니다. 따라서, 다음과 같은 결과가 가능합니다:
하지만, release-acquire 에 의해 제공되는 순서는 해당 연결에 동참한 CPU 들에만
적용되므로 cpu3() 에, 적어도 스토어들 외에는 적용되지 않습니다. 따라서, 다음과
같은 결과가 가능합니다:
r0 == 0 && r1 == 1 && r2 == 1 && r3 == 0 && r4 == 0
@ -1482,8 +1477,8 @@ u 로의 스토어를 cpu1() 의 v 로부터의 로드 뒤에 일어난 것으
이런 결과는 어떤 것도 재배치 되지 않는, 순차적 일관성을 가진 가상의
시스템에서도 일어날 수 있음을 기억해 두시기 바랍니다.
다시 말하지만, 당신의 코드가 글로벌 이행성을 필요로 한다면, 범용 배리어를
사용하십시오.
다시 말하지만, 당신의 코드가 모든 오퍼레이션들의 완전한 순서를 필요로 한다면,
범용 배리어를 사용하십시오.
==================
@ -3046,6 +3041,9 @@ AMD64 Architecture Programmer's Manual Volume 2: System Programming
Chapter 7.1: Memory-Access Ordering
Chapter 7.4: Buffering and Combining Memory Writes
ARM Architecture Reference Manual (ARMv8, for ARMv8-A architecture profile)
Chapter B2: The AArch64 Application Level Memory Model
IA-32 Intel Architecture Software Developer's Manual, Volume 3:
System Programming Guide
Chapter 7.1: Locked Atomic Operations
@ -3057,6 +3055,8 @@ The SPARC Architecture Manual, Version 9
Appendix D: Formal Specification of the Memory Models
Appendix J: Programming with the Memory Models
Storage in the PowerPC (Stone and Fitzgerald)
UltraSPARC Programmer Reference Manual
Chapter 5: Memory Accesses and Cacheability
Chapter 15: Sparc-V9 Memory Models

2
Documentation/virtual/kvm/devices/arm-vgic-its.txt
View File

@ -64,6 +64,8 @@ Groups:
-EINVAL: Inconsistent restored data
-EFAULT: Invalid guest ram access
-EBUSY: One or more VCPUS are running
-EACCES: The virtual ITS is backed by a physical GICv4 ITS, and the
state is not available
KVM_DEV_ARM_VGIC_GRP_ITS_REGS
Attributes:

9
Documentation/x86/protection-keys.txt
View File

@ -1,5 +1,10 @@
Memory Protection Keys for Userspace (PKU aka PKEYs) is a CPU feature
which will be found on future Intel CPUs.
Memory Protection Keys for Userspace (PKU aka PKEYs) is a feature
which is found on Intel's Skylake "Scalable Processor" Server CPUs.
It will be avalable in future non-server parts.
For anyone wishing to test or use this feature, it is available in
Amazon's EC2 C5 instances and is known to work there using an Ubuntu
17.04 image.
Memory Protection Keys provides a mechanism for enforcing page-based
protections, but without requiring modification of the page tables

2
Kbuild
View File

@ -18,7 +18,6 @@ targets := kernel/bounds.s
# We use internal kbuild rules to avoid the "is up to date" message from make
kernel/bounds.s: kernel/bounds.c FORCE
$(Q)mkdir -p $(dir $@)
$(call if_changed_dep,cc_s_c)
$(obj)/$(bounds-file): kernel/bounds.s FORCE
@ -54,7 +53,6 @@ targets += arch/$(SRCARCH)/kernel/asm-offsets.s
# We use internal kbuild rules to avoid the "is up to date" message from make
arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \
$(obj)/$(timeconst-file) $(obj)/$(bounds-file) FORCE
$(Q)mkdir -p $(dir $@)
$(call if_changed_dep,cc_s_c)
$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE

84
MAINTAINERS
View File

@ -384,6 +384,7 @@ ACPI WMI DRIVER
L: platform-driver-x86@vger.kernel.org
S: Orphan
F: drivers/platform/x86/wmi.c
F: include/uapi/linux/wmi.h
AD1889 ALSA SOUND DRIVER
M: Thibaut Varene <T-Bone@parisc-linux.org>
@ -1589,10 +1590,13 @@ F: drivers/rtc/rtc-armada38x.c
ARM/Mediatek RTC DRIVER
M: Eddie Huang <eddie.huang@mediatek.com>
M: Sean Wang <sean.wang@mediatek.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/rtc/rtc-mt7622.txt
F: drivers/rtc/rtc-mt6397.c
F: drivers/rtc/rtc-mt7622.c
ARM/Mediatek SoC support
M: Matthias Brugger <matthias.bgg@gmail.com>
@ -2986,6 +2990,14 @@ S: Maintained
F: Documentation/devicetree/bindings/cpufreq/brcm,stb-avs-cpu-freq.txt
F: drivers/cpufreq/brcmstb*
BROADCOM STB AVS TMON DRIVER
M: Markus Mayer <mmayer@broadcom.com>
M: bcm-kernel-feedback-list@broadcom.com
L: linux-pm@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/thermal/brcm,avs-tmon.txt
F: drivers/thermal/broadcom/brcmstb*
BROADCOM STB NAND FLASH DRIVER
M: Brian Norris <computersforpeace@gmail.com>
M: Kamal Dasu <kdasu.kdev@gmail.com>
@ -3720,8 +3732,8 @@ F: drivers/cpuidle/*
F: include/linux/cpuidle.h
CRAMFS FILESYSTEM
W: http://sourceforge.net/projects/cramfs/
S: Orphan / Obsolete
M: Nicolas Pitre <nico@linaro.org>
S: Maintained
F: Documentation/filesystems/cramfs.txt
F: fs/cramfs/
@ -4022,6 +4034,26 @@ M: "Maciej W. Rozycki" <macro@linux-mips.org>
S: Maintained
F: drivers/net/fddi/defxx.*
DELL SMBIOS DRIVER
M: Pali Rohár <pali.rohar@gmail.com>
M: Mario Limonciello <mario.limonciello@dell.com>
L: platform-driver-x86@vger.kernel.org
S: Maintained
F: drivers/platform/x86/dell-smbios.*
DELL SMBIOS SMM DRIVER
M: Mario Limonciello <mario.limonciello@dell.com>
L: platform-driver-x86@vger.kernel.org
S: Maintained
F: drivers/platform/x86/dell-smbios-smm.c
DELL SMBIOS WMI DRIVER
M: Mario Limonciello <mario.limonciello@dell.com>
L: platform-driver-x86@vger.kernel.org
S: Maintained
F: drivers/platform/x86/dell-smbios-wmi.c
F: tools/wmi/dell-smbios-example.c
DELL LAPTOP DRIVER
M: Matthew Garrett <mjg59@srcf.ucam.org>
M: Pali Rohár <pali.rohar@gmail.com>
@ -4051,12 +4083,17 @@ S: Maintained
F: Documentation/dcdbas.txt
F: drivers/firmware/dcdbas.*
DELL WMI EXTRAS DRIVER
DELL WMI NOTIFICATIONS DRIVER
M: Matthew Garrett <mjg59@srcf.ucam.org>
M: Pali Rohár <pali.rohar@gmail.com>
S: Maintained
F: drivers/platform/x86/dell-wmi.c
DELL WMI DESCRIPTOR DRIVER
M: Mario Limonciello <mario.limonciello@dell.com>
S: Maintained
F: drivers/platform/x86/dell-wmi-descriptor.c
DELTA ST MEDIA DRIVER
M: Hugues Fruchet <hugues.fruchet@st.com>
L: linux-media@vger.kernel.org
@ -4208,7 +4245,7 @@ L: linux-i2c@vger.kernel.org
S: Maintained
F: drivers/i2c/busses/i2c-diolan-u2c.c
DIRECT ACCESS (DAX)
FILESYSTEM DIRECT ACCESS (DAX)
M: Matthew Wilcox <mawilcox@microsoft.com>
M: Ross Zwisler <ross.zwisler@linux.intel.com>
L: linux-fsdevel@vger.kernel.org
@ -4217,6 +4254,12 @@ F: fs/dax.c
F: include/linux/dax.h
F: include/trace/events/fs_dax.h
DEVICE DIRECT ACCESS (DAX)
M: Dan Williams <dan.j.williams@intel.com>
L: linux-nvdimm@lists.01.org
S: Supported
F: drivers/dax/
DIRECTORY NOTIFICATION (DNOTIFY)
M: Jan Kara <jack@suse.cz>
R: Amir Goldstein <amir73il@gmail.com>
@ -5210,7 +5253,7 @@ F: drivers/video/fbdev/s1d13xxxfb.c
F: include/video/s1d13xxxfb.h
ERRSEQ ERROR TRACKING INFRASTRUCTURE
M: Jeff Layton <jlayton@poochiereds.net>
M: Jeff Layton <jlayton@kernel.org>
S: Maintained
F: lib/errseq.c
F: include/linux/errseq.h
@ -5398,7 +5441,7 @@ F: include/scsi/libfcoe.h
F: include/uapi/scsi/fc/
FILE LOCKING (flock() and fcntl()/lockf())
M: Jeff Layton <jlayton@poochiereds.net>
M: Jeff Layton <jlayton@kernel.org>
M: "J. Bruce Fields" <bfields@fieldses.org>
L: linux-fsdevel@vger.kernel.org
S: Maintained
@ -6131,7 +6174,6 @@ M: Jean Delvare <jdelvare@suse.com>
M: Guenter Roeck <linux@roeck-us.net>
L: linux-hwmon@vger.kernel.org
W: http://hwmon.wiki.kernel.org/
T: quilt http://jdelvare.nerim.net/devel/linux/jdelvare-hwmon/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git
S: Maintained
F: Documentation/hwmon/
@ -6841,6 +6883,7 @@ F: drivers/ipack/
INFINIBAND SUBSYSTEM
M: Doug Ledford <dledford@redhat.com>
M: Jason Gunthorpe <jgg@mellanox.com>
L: linux-rdma@vger.kernel.org
W: http://www.openfabrics.org/
Q: http://patchwork.kernel.org/project/linux-rdma/list/
@ -7166,6 +7209,11 @@ F: Documentation/wimax/README.i2400m
F: drivers/net/wimax/i2400m/
F: include/uapi/linux/wimax/i2400m.h
INTEL WMI THUNDERBOLT FORCE POWER DRIVER
M: Mario Limonciello <mario.limonciello@dell.com>
S: Maintained
F: drivers/platform/x86/intel-wmi-thunderbolt.c
INTEL(R) TRACE HUB
M: Alexander Shishkin <alexander.shishkin@linux.intel.com>
S: Supported
@ -7427,7 +7475,7 @@ JFS FILESYSTEM
M: Dave Kleikamp <shaggy@kernel.org>
L: jfs-discussion@lists.sourceforge.net
W: http://jfs.sourceforge.net/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6.git
T: git git://github.com/kleikamp/linux-shaggy.git
S: Maintained
F: Documentation/filesystems/jfs.txt
F: fs/jfs/
@ -7543,7 +7591,7 @@ S: Odd Fixes
KERNEL NFSD, SUNRPC, AND LOCKD SERVERS
M: "J. Bruce Fields" <bfields@fieldses.org>
M: Jeff Layton <jlayton@poochiereds.net>
M: Jeff Layton <jlayton@kernel.org>
L: linux-nfs@vger.kernel.org
W: http://nfs.sourceforge.net/
T: git git://linux-nfs.org/~bfields/linux.git
@ -9282,9 +9330,9 @@ F: drivers/gpu/drm/mxsfb/
F: Documentation/devicetree/bindings/display/mxsfb-drm.txt
MYRICOM MYRI-10G 10GbE DRIVER (MYRI10GE)
M: Hyong-Youb Kim <hykim@myri.com>
M: Chris Lee <christopher.lee@cspi.com>
L: netdev@vger.kernel.org
W: https://www.myricom.com/support/downloads/myri10ge.html
W: https://www.cspi.com/ethernet-products/support/downloads/
S: Supported
F: drivers/net/ethernet/myricom/myri10ge/
@ -9680,12 +9728,11 @@ S: Supported
F: drivers/ntb/hw/idt/
NTB INTEL DRIVER
M: Jon Mason <jdmason@kudzu.us>
M: Dave Jiang <dave.jiang@intel.com>
L: linux-ntb@googlegroups.com
S: Supported
W: https://github.com/jonmason/ntb/wiki
T: git git://github.com/jonmason/ntb.git
W: https://github.com/davejiang/linux/wiki
T: git https://github.com/davejiang/linux.git
F: drivers/ntb/hw/intel/
NTFS FILESYSTEM
@ -10397,6 +10444,8 @@ F: Documentation/switchtec.txt
F: Documentation/ABI/testing/sysfs-class-switchtec
F: drivers/pci/switch/switchtec*
F: include/uapi/linux/switchtec_ioctl.h
F: include/linux/switchtec.h
F: drivers/ntb/hw/mscc/
PCI DRIVER FOR MVEBU (Marvell Armada 370 and Armada XP SOC support)
M: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
@ -10615,6 +10664,12 @@ S: Maintained
F: crypto/pcrypt.c
F: include/crypto/pcrypt.h
PEAQ WMI HOTKEYS DRIVER
M: Hans de Goede <hdegoede@redhat.com>
L: platform-driver-x86@vger.kernel.org
S: Maintained
F: drivers/platform/x86/peaq-wmi.c
PER-CPU MEMORY ALLOCATOR
M: Tejun Heo <tj@kernel.org>
M: Christoph Lameter <cl@linux.com>
@ -11528,6 +11583,7 @@ F: include/linux/rpmsg/
RENESAS CLOCK DRIVERS
M: Geert Uytterhoeven <geert+renesas@glider.be>
L: linux-renesas-soc@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git clk-renesas
S: Supported
F: drivers/clk/renesas/

375
Makefile
View File

@ -1,8 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 14
PATCHLEVEL = 15
SUBLEVEL = 0
EXTRAVERSION =
EXTRAVERSION = -rc2
NAME = Fearless Coyote
# *DOCUMENTATION*
@ -11,6 +11,10 @@ NAME = Fearless Coyote
# Comments in this file are targeted only to the developer, do not
# expect to learn how to build the kernel reading this file.
# That's our default target when none is given on the command line
PHONY := _all
_all:
# o Do not use make's built-in rules and variables
# (this increases performance and avoids hard-to-debug behaviour);
# o Look for make include files relative to root of kernel src
@ -117,10 +121,6 @@ ifeq ("$(origin O)", "command line")
KBUILD_OUTPUT := $(O)
endif
# That's our default target when none is given on the command line
PHONY := _all
_all:
# Cancel implicit rules on top Makefile
$(CURDIR)/Makefile Makefile: ;
@ -132,7 +132,7 @@ ifneq ($(KBUILD_OUTPUT),)
# check that the output directory actually exists
saved-output := $(KBUILD_OUTPUT)
KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
&& /bin/pwd)
&& pwd)
$(if $(KBUILD_OUTPUT),, \
$(error failed to create output directory "$(saved-output)"))
@ -187,15 +187,6 @@ ifeq ("$(origin M)", "command line")
KBUILD_EXTMOD := $(M)
endif
# If building an external module we do not care about the all: rule
# but instead _all depend on modules
PHONY += all
ifeq ($(KBUILD_EXTMOD),)
_all: all
else
_all: modules
endif
ifeq ($(KBUILD_SRC),)
# building in the source tree
srctree := .
@ -207,6 +198,9 @@ else
srctree := $(KBUILD_SRC)
endif
endif
export KBUILD_CHECKSRC KBUILD_EXTMOD KBUILD_SRC
objtree := .
src := $(srctree)
obj := $(objtree)
@ -215,6 +209,74 @@ VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
export srctree objtree VPATH
# To make sure we do not include .config for any of the *config targets
# catch them early, and hand them over to scripts/kconfig/Makefile
# It is allowed to specify more targets when calling make, including
# mixing *config targets and build targets.
# For example 'make oldconfig all'.
# Detect when mixed targets is specified, and make a second invocation
# of make so .config is not included in this case either (for *config).
version_h := include/generated/uapi/linux/version.h
old_version_h := include/linux/version.h
no-dot-config-targets := clean mrproper distclean \
cscope gtags TAGS tags help% %docs check% coccicheck \
$(version_h) headers_% archheaders archscripts \
kernelversion %src-pkg
config-targets := 0
mixed-targets := 0
dot-config := 1
ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
dot-config := 0
endif
endif
ifeq ($(KBUILD_EXTMOD),)
ifneq ($(filter config %config,$(MAKECMDGOALS)),)
config-targets := 1
ifneq ($(words $(MAKECMDGOALS)),1)
mixed-targets := 1
endif
endif
endif
# install and modules_install need also be processed one by one
ifneq ($(filter install,$(MAKECMDGOALS)),)
ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
mixed-targets := 1
endif
endif
ifeq ($(mixed-targets),1)
# ===========================================================================
# We're called with mixed targets (*config and build targets).
# Handle them one by one.
PHONY += $(MAKECMDGOALS) __build_one_by_one
$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
@:
__build_one_by_one:
$(Q)set -e; \
for i in $(MAKECMDGOALS); do \
$(MAKE) -f $(srctree)/Makefile $$i; \
done
else
# We need some generic definitions (do not try to remake the file).
scripts/Kbuild.include: ;
include scripts/Kbuild.include
# Read KERNELRELEASE from include/config/kernel.release (if it exists)
KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
# SUBARCH tells the usermode build what the underlying arch is. That is set
# first, and if a usermode build is happening, the "ARCH=um" on the command
# line overrides the setting of ARCH below. If a native build is happening,
@ -285,9 +347,6 @@ ifeq ($(ARCH),tilegx)
SRCARCH := tile
endif
# Where to locate arch specific headers
hdr-arch := $(SRCARCH)
KCONFIG_CONFIG ?= .config
export KCONFIG_CONFIG
@ -308,45 +367,6 @@ HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS)
HOSTLDFLAGS := $(HOST_LFS_LDFLAGS)
HOST_LOADLIBES := $(HOST_LFS_LIBS)
ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \
-Wno-missing-field-initializers -fno-delete-null-pointer-checks
endif
# Decide whether to build built-in, modular, or both.
# Normally, just do built-in.
KBUILD_MODULES :=
KBUILD_BUILTIN := 1
# If we have only "make modules", don't compile built-in objects.
# When we're building modules with modversions, we need to consider
# the built-in objects during the descend as well, in order to
# make sure the checksums are up to date before we record them.
ifeq ($(MAKECMDGOALS),modules)
KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
endif
# If we have "make <whatever> modules", compile modules
# in addition to whatever we do anyway.
# Just "make" or "make all" shall build modules as well
ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
KBUILD_MODULES := 1
endif
ifeq ($(MAKECMDGOALS),)
KBUILD_MODULES := 1
endif
export KBUILD_MODULES KBUILD_BUILTIN
export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
# We need some generic definitions (do not try to remake the file).
scripts/Kbuild.include: ;
include scripts/Kbuild.include
# Make variables (CC, etc...)
AS = $(CROSS_COMPILE)as
LD = $(CROSS_COMPILE)ld
@ -374,14 +394,11 @@ LDFLAGS_MODULE =
CFLAGS_KERNEL =
AFLAGS_KERNEL =
LDFLAGS_vmlinux =
CFLAGS_GCOV := -fprofile-arcs -ftest-coverage -fno-tree-loop-im $(call cc-disable-warning,maybe-uninitialized,)
CFLAGS_KCOV := $(call cc-option,-fsanitize-coverage=trace-pc,)
# Use USERINCLUDE when you must reference the UAPI directories only.
USERINCLUDE := \
-I$(srctree)/arch/$(hdr-arch)/include/uapi \
-I$(objtree)/arch/$(hdr-arch)/include/generated/uapi \
-I$(srctree)/arch/$(SRCARCH)/include/uapi \
-I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \
-I$(srctree)/include/uapi \
-I$(objtree)/include/generated/uapi \
-include $(srctree)/include/linux/kconfig.h
@ -389,40 +406,33 @@ USERINCLUDE := \
# Use LINUXINCLUDE when you must reference the include/ directory.
# Needed to be compatible with the O= option
LINUXINCLUDE := \
-I$(srctree)/arch/$(hdr-arch)/include \
-I$(objtree)/arch/$(hdr-arch)/include/generated \
-I$(srctree)/arch/$(SRCARCH)/include \
-I$(objtree)/arch/$(SRCARCH)/include/generated \
$(if $(KBUILD_SRC), -I$(srctree)/include) \
-I$(objtree)/include \
$(USERINCLUDE)
KBUILD_CPPFLAGS := -D__KERNEL__
KBUILD_AFLAGS := -D__ASSEMBLY__
KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -fno-common -fshort-wchar \
-Werror-implicit-function-declaration \
-Wno-format-security \
-std=gnu89 $(call cc-option,-fno-PIE)
-std=gnu89
KBUILD_CPPFLAGS := -D__KERNEL__
KBUILD_AFLAGS_KERNEL :=
KBUILD_CFLAGS_KERNEL :=
KBUILD_AFLAGS := -D__ASSEMBLY__ $(call cc-option,-fno-PIE)
KBUILD_AFLAGS_MODULE := -DMODULE
KBUILD_CFLAGS_MODULE := -DMODULE
KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
GCC_PLUGINS_CFLAGS :=
# Read KERNELRELEASE from include/config/kernel.release (if it exists)
KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
export CPP AR NM STRIP OBJCOPY OBJDUMP HOSTLDFLAGS HOST_LOADLIBES
export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE
export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KCOV CFLAGS_KASAN CFLAGS_UBSAN
export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_KASAN CFLAGS_UBSAN
export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
@ -464,73 +474,38 @@ ifneq ($(KBUILD_SRC),)
$(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
endif
# Support for using generic headers in asm-generic
PHONY += asm-generic uapi-asm-generic
asm-generic: uapi-asm-generic
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
src=asm obj=arch/$(SRCARCH)/include/generated/asm
uapi-asm-generic:
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
# To make sure we do not include .config for any of the *config targets
# catch them early, and hand them over to scripts/kconfig/Makefile
# It is allowed to specify more targets when calling make, including
# mixing *config targets and build targets.
# For example 'make oldconfig all'.
# Detect when mixed targets is specified, and make a second invocation
# of make so .config is not included in this case either (for *config).
version_h := include/generated/uapi/linux/version.h
old_version_h := include/linux/version.h
no-dot-config-targets := clean mrproper distclean \
cscope gtags TAGS tags help% %docs check% coccicheck \
$(version_h) headers_% archheaders archscripts \
kernelversion %src-pkg
config-targets := 0
mixed-targets := 0
dot-config := 1
ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
dot-config := 0
endif
ifeq ($(cc-name),clang)
ifneq ($(CROSS_COMPILE),)
CLANG_TARGET := --target=$(notdir $(CROSS_COMPILE:%-=%))
GCC_TOOLCHAIN := $(realpath $(dir $(shell which $(LD)))/..)
endif
ifeq ($(KBUILD_EXTMOD),)
ifneq ($(filter config %config,$(MAKECMDGOALS)),)
config-targets := 1
ifneq ($(words $(MAKECMDGOALS)),1)
mixed-targets := 1
endif
endif
ifneq ($(GCC_TOOLCHAIN),)
CLANG_GCC_TC := --gcc-toolchain=$(GCC_TOOLCHAIN)
endif
# install and modules_install need also be processed one by one
ifneq ($(filter install,$(MAKECMDGOALS)),)
ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
mixed-targets := 1
endif
endif
ifeq ($(mixed-targets),1)
# ===========================================================================
# We're called with mixed targets (*config and build targets).
# Handle them one by one.
PHONY += $(MAKECMDGOALS) __build_one_by_one
$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
@:
__build_one_by_one:
$(Q)set -e; \
for i in $(MAKECMDGOALS); do \
$(MAKE) -f $(srctree)/Makefile $$i; \
done
KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
# Quiet clang warning: comparison of unsigned expression < 0 is always false
KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
# source of a reference will be _MergedGlobals and not on of the whitelisted names.
# See modpost pattern 2
KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
KBUILD_CFLAGS += $(call cc-option, -no-integrated-as)
KBUILD_AFLAGS += $(call cc-option, -no-integrated-as)
else
# These warnings generated too much noise in a regular build.
# Use make W=1 to enable them (see scripts/Makefile.extrawarn)
KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
endif
ifeq ($(config-targets),1)
# ===========================================================================
# *config targets only - make sure prerequisites are updated, and descend
@ -553,6 +528,44 @@ else
# Build targets only - this includes vmlinux, arch specific targets, clean
# targets and others. In general all targets except *config targets.
# If building an external module we do not care about the all: rule
# but instead _all depend on modules
PHONY += all
ifeq ($(KBUILD_EXTMOD),)
_all: all
else
_all: modules
endif
# Decide whether to build built-in, modular, or both.
# Normally, just do built-in.
KBUILD_MODULES :=
KBUILD_BUILTIN := 1
# If we have only "make modules", don't compile built-in objects.
# When we're building modules with modversions, we need to consider
# the built-in objects during the descend as well, in order to
# make sure the checksums are up to date before we record them.
ifeq ($(MAKECMDGOALS),modules)
KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
endif
# If we have "make <whatever> modules", compile modules
# in addition to whatever we do anyway.
# Just "make" or "make all" shall build modules as well
ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
KBUILD_MODULES := 1
endif
ifeq ($(MAKECMDGOALS),)
KBUILD_MODULES := 1
endif
export KBUILD_MODULES KBUILD_BUILTIN
ifeq ($(KBUILD_EXTMOD),)
# Additional helpers built in scripts/
# Carefully list dependencies so we do not try to build scripts twice
@ -623,6 +636,11 @@ endif
# Defaults to vmlinux, but the arch makefile usually adds further targets
all: vmlinux
KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
CFLAGS_GCOV := -fprofile-arcs -ftest-coverage -fno-tree-loop-im $(call cc-disable-warning,maybe-uninitialized,)
export CFLAGS_GCOV CFLAGS_KCOV
# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
# values of the respective KBUILD_* variables
ARCH_CPPFLAGS :=
@ -654,11 +672,12 @@ KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, \
KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
# check for 'asm goto'
ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
ifeq ($(call shell-cached,$(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO
endif
include scripts/Makefile.kcov
include scripts/Makefile.gcc-plugins
ifdef CONFIG_READABLE_ASM
@ -697,38 +716,6 @@ ifdef CONFIG_CC_STACKPROTECTOR
endif
KBUILD_CFLAGS += $(stackp-flag)
ifeq ($(cc-name),clang)
ifneq ($(CROSS_COMPILE),)
CLANG_TARGET := --target=$(notdir $(CROSS_COMPILE:%-=%))
GCC_TOOLCHAIN := $(realpath $(dir $(shell which $(LD)))/..)
endif
ifneq ($(GCC_TOOLCHAIN),)
CLANG_GCC_TC := --gcc-toolchain=$(GCC_TOOLCHAIN)
endif
KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
# Quiet clang warning: comparison of unsigned expression < 0 is always false
KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
# source of a reference will be _MergedGlobals and not on of the whitelisted names.
# See modpost pattern 2
KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
KBUILD_CFLAGS += $(call cc-option, -no-integrated-as)
KBUILD_AFLAGS += $(call cc-option, -no-integrated-as)
else
# These warnings generated too much noise in a regular build.
# Use make W=1 to enable them (see scripts/Makefile.extrawarn)
KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
endif
ifdef CONFIG_FRAME_POINTER
KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
else
@ -790,7 +777,7 @@ KBUILD_CFLAGS += $(call cc-option,-fdata-sections,)
endif
# arch Makefile may override CC so keep this after arch Makefile is included
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
NOSTDINC_FLAGS += -nostdinc -isystem $(call shell-cached,$(CC) -print-file-name=include)
CHECKFLAGS += $(NOSTDINC_FLAGS)
# warn about C99 declaration after statement
@ -1022,7 +1009,7 @@ $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
PHONY += $(vmlinux-dirs)
$(vmlinux-dirs): prepare scripts
$(Q)$(MAKE) $(build)=$@
$(Q)$(MAKE) $(build)=$@ need-builtin=1
define filechk_kernel.release
echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
@ -1072,6 +1059,15 @@ prepare0: archprepare gcc-plugins
# All the preparing..
prepare: prepare0 prepare-objtool
# Support for using generic headers in asm-generic
PHONY += asm-generic uapi-asm-generic
asm-generic: uapi-asm-generic
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
src=asm obj=arch/$(SRCARCH)/include/generated/asm
uapi-asm-generic:
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
PHONY += prepare-objtool
prepare-objtool: $(objtool_target)
@ -1140,8 +1136,8 @@ headerdep:
#Default location for installed headers
export INSTALL_HDR_PATH = $(objtree)/usr
# If we do an all arch process set dst to include/arch-$(hdr-arch)
hdr-dst = $(if $(KBUILD_HEADERS), dst=include/arch-$(hdr-arch), dst=include)
# If we do an all arch process set dst to include/arch-$(SRCARCH)
hdr-dst = $(if $(KBUILD_HEADERS), dst=include/arch-$(SRCARCH), dst=include)
PHONY += archheaders
archheaders:
@ -1159,10 +1155,10 @@ headers_install_all:
PHONY += headers_install
headers_install: __headers
$(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
$(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \
$(error Headers not exportable for the $(SRCARCH) architecture))
$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include
$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi $(hdr-dst)
$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst)
PHONY += headers_check_all
headers_check_all: headers_install_all
@ -1171,7 +1167,7 @@ headers_check_all: headers_install_all
PHONY += headers_check
headers_check: headers_install
$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1
$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi $(hdr-dst) HDRCHECK=1
$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) HDRCHECK=1
# ---------------------------------------------------------------------------
# Kernel selftest
@ -1284,7 +1280,7 @@ CLEAN_DIRS += $(MODVERDIR)
# Directories & files removed with 'make mrproper'
MRPROPER_DIRS += include/config usr/include include/generated \
arch/*/include/generated .tmp_objdiff
MRPROPER_FILES += .config .config.old .version .old_version \
MRPROPER_FILES += .config .config.old .version \
Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
signing_key.pem signing_key.priv signing_key.x509 \
x509.genkey extra_certificates signing_key.x509.keyid \
@ -1341,8 +1337,9 @@ package-dir := scripts/package
$(Q)$(MAKE) $(build)=$(package-dir) $@
%pkg: include/config/kernel.release FORCE
$(Q)$(MAKE) $(build)=$(package-dir) $@
rpm: include/config/kernel.release FORCE
$(Q)$(MAKE) $(build)=$(package-dir) $@
rpm: rpm-pkg
@echo " WARNING: \"rpm\" target will be removed after Linux 4.18"
@echo " Please use \"rpm-pkg\" instead."
# Brief documentation of the typical targets used
@ -1394,7 +1391,7 @@ help:
@echo ' export_report - List the usages of all exported symbols'
@echo ' headers_check - Sanity check on exported headers'
@echo ' headerdep - Detect inclusion cycles in headers'
@$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
@echo ' coccicheck - Check with Coccinelle'
@echo ''
@echo 'Kernel selftest:'
@echo ' kselftest - Build and run kernel selftest (run as root)'
@ -1550,13 +1547,14 @@ clean: $(clean-dirs)
$(call cmd,rmdirs)
$(call cmd,rmfiles)
@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
\( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \
-o -name '*.ko.*' -o -name '*.dtb' -o -name '*.dtb.S' \
-o -name '*.dwo' \
-o -name '*.dwo' -o -name '*.lst' \
-o -name '*.su' \
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
-o -name '*.symtypes' -o -name 'modules.order' \
-o -name modules.builtin -o -name '.tmp_*.o.*' \
-o -name .cache.mk \
-o -name '*.c.[012]*.*' \
-o -name '*.ll' \
-o -name '*.gcno' \) -type f -print | xargs rm -f
@ -1703,8 +1701,7 @@ cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
# read all saved command lines
targets := $(wildcard $(sort $(targets)))
cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
cmd_files := $(wildcard .*.cmd $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),)
$(cmd_files): ; # Do not try to update included dependency files

1
arch/alpha/include/uapi/asm/mman.h
View File

@ -12,6 +12,7 @@
#define MAP_SHARED 0x01 /* Share changes */
#define MAP_PRIVATE 0x02 /* Changes are private */
#define MAP_SHARED_VALIDATE 0x03 /* share + validate extension flags */
#define MAP_TYPE 0x0f /* Mask for type of mapping (OSF/1 is _wrong_) */
#define MAP_FIXED 0x100 /* Interpret addr exactly */
#define MAP_ANONYMOUS 0x10 /* don't use a file */

7
arch/alpha/kernel/srmcons.c
View File

@ -65,9 +65,9 @@ srmcons_do_receive_chars(struct tty_port *port)
}
static void
srmcons_receive_chars(unsigned long data)
srmcons_receive_chars(struct timer_list *t)
{
struct srmcons_private *srmconsp = (struct srmcons_private *)data;
struct srmcons_private *srmconsp = from_timer(srmconsp, t, timer);
struct tty_port *port = &srmconsp->port;
unsigned long flags;
int incr = 10;
@ -206,8 +206,7 @@ static const struct tty_operations srmcons_ops = {
static int __init
srmcons_init(void)
{
setup_timer(&srmcons_singleton.timer, srmcons_receive_chars,
(unsigned long)&srmcons_singleton);
timer_setup(&srmcons_singleton.timer, srmcons_receive_chars, 0);
if (srm_is_registered_console) {
struct tty_driver *driver;
int err;

2
arch/arc/Kconfig
View File

@ -39,7 +39,7 @@ config ARC
select OF
select OF_EARLY_FLATTREE
select OF_RESERVED_MEM
select PERF_USE_VMALLOC
select PERF_USE_VMALLOC if ARC_CACHE_VIPT_ALIASING
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_GENERIC_DMA_COHERENT
select HAVE_KERNEL_GZIP

8
arch/arc/boot/dts/axs10x_mb.dtsi
View File

@ -16,6 +16,12 @@
ranges = <0x00000000 0x0 0xe0000000 0x10000000>;
interrupt-parent = <&mb_intc>;
creg_rst: reset-controller@11220 {
compatible = "snps,axs10x-reset";
#reset-cells = <1>;
reg = <0x11220 0x4>;
};
i2sclk: i2sclk@100a0 {
compatible = "snps,axs10x-i2s-pll-clock";
reg = <0x100a0 0x10>;
@ -73,6 +79,8 @@
clocks = <&apbclk>;
clock-names = "stmmaceth";
max-speed = <100>;
resets = <&creg_rst 5>;
reset-names = "stmmaceth";
};
ehci@0x40000 {

33
arch/arc/include/asm/arcregs.h
View File

@ -11,12 +11,14 @@
/* Build Configuration Registers */
#define ARC_REG_AUX_DCCM 0x18 /* DCCM Base Addr ARCv2 */
#define ARC_REG_ERP_CTRL 0x3F /* ARCv2 Error protection control */
#define ARC_REG_DCCM_BASE_BUILD 0x61 /* DCCM Base Addr ARCompact */
#define ARC_REG_CRC_BCR 0x62
#define ARC_REG_VECBASE_BCR 0x68
#define ARC_REG_PERIBASE_BCR 0x69
#define ARC_REG_FP_BCR 0x6B /* ARCompact: Single-Precision FPU */
#define ARC_REG_DPFP_BCR 0x6C /* ARCompact: Dbl Precision FPU */
#define ARC_REG_ERP_BUILD 0xc7 /* ARCv2 Error protection Build: ECC/Parity */
#define ARC_REG_FP_V2_BCR 0xc8 /* ARCv2 FPU */
#define ARC_REG_SLC_BCR 0xce
#define ARC_REG_DCCM_BUILD 0x74 /* DCCM size (common) */
@ -32,11 +34,14 @@
#define ARC_REG_D_UNCACH_BCR 0x6A
#define ARC_REG_BPU_BCR 0xc0
#define ARC_REG_ISA_CFG_BCR 0xc1
#define ARC_REG_LPB_BUILD 0xE9 /* ARCv2 Loop Buffer Build */
#define ARC_REG_RTT_BCR 0xF2
#define ARC_REG_IRQ_BCR 0xF3
#define ARC_REG_MICRO_ARCH_BCR 0xF9 /* ARCv2 Product revision */
#define ARC_REG_SMART_BCR 0xFF
#define ARC_REG_CLUSTER_BCR 0xcf
#define ARC_REG_AUX_ICCM 0x208 /* ICCM Base Addr (ARCv2) */
#define ARC_REG_LPB_CTRL 0x488 /* ARCv2 Loop Buffer control */
/* Common for ARCompact and ARCv2 status register */
#define ARC_REG_STATUS32 0x0A
@ -229,6 +234,32 @@ struct bcr_bpu_arcv2 {
#endif
};
/* Error Protection Build: ECC/Parity */
struct bcr_erp {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad3:5, mmu:3, pad2:4, ic:3, dc:3, pad1:6, ver:8;
#else
unsigned int ver:8, pad1:6, dc:3, ic:3, pad2:4, mmu:3, pad3:5;
#endif
};
/* Error Protection Control */
struct ctl_erp {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad2:27, mpd:1, pad1:2, dpd:1, dpi:1;
#else
unsigned int dpi:1, dpd:1, pad1:2, mpd:1, pad2:27;
#endif
};
struct bcr_lpb {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:16, entries:8, ver:8;
#else
unsigned int ver:8, entries:8, pad:16;
#endif
};
struct bcr_generic {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int info:24, ver:8;
@ -270,7 +301,7 @@ struct cpuinfo_arc {
struct cpuinfo_arc_ccm iccm, dccm;
struct {
unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, swape:1, pad1:2,
fpu_sp:1, fpu_dp:1, dual_iss_enb:1, dual_iss_exist:1, pad2:4,
fpu_sp:1, fpu_dp:1, dual:1, dual_enb:1, pad2:4,
debug:1, ap:1, smart:1, rtt:1, pad3:4,
timer0:1, timer1:1, rtc:1, gfrc:1, pad4:4;
} extn;

38
arch/arc/kernel/perf_event.c
View File

@ -336,15 +336,12 @@ static int arc_pmu_add(struct perf_event *event, int flags)
struct hw_perf_event *hwc = &event->hw;
int idx = hwc->idx;
if (__test_and_set_bit(idx, pmu_cpu->used_mask)) {
idx = find_first_zero_bit(pmu_cpu->used_mask,
arc_pmu->n_counters);
if (idx == arc_pmu->n_counters)
return -EAGAIN;
idx = ffz(pmu_cpu->used_mask[0]);
if (idx == arc_pmu->n_counters)
return -EAGAIN;
__set_bit(idx, pmu_cpu->used_mask);
hwc->idx = idx;
}
__set_bit(idx, pmu_cpu->used_mask);
hwc->idx = idx;
write_aux_reg(ARC_REG_PCT_INDEX, idx);
@ -377,21 +374,22 @@ static irqreturn_t arc_pmu_intr(int irq, void *dev)
struct perf_sample_data data;
struct arc_pmu_cpu *pmu_cpu = this_cpu_ptr(&arc_pmu_cpu);
struct pt_regs *regs;
int active_ints;
unsigned int active_ints;
int idx;
arc_pmu_disable(&arc_pmu->pmu);
active_ints = read_aux_reg(ARC_REG_PCT_INT_ACT);
if (!active_ints)
goto done;
regs = get_irq_regs();
for (idx = 0; idx < arc_pmu->n_counters; idx++) {
struct perf_event *event = pmu_cpu->act_counter[idx];
do {
struct perf_event *event;
struct hw_perf_event *hwc;
if (!(active_ints & (1 << idx)))
continue;
idx = __ffs(active_ints);
/* Reset interrupt flag by writing of 1 */
write_aux_reg(ARC_REG_PCT_INT_ACT, 1 << idx);
@ -404,19 +402,22 @@ static irqreturn_t arc_pmu_intr(int irq, void *dev)
write_aux_reg(ARC_REG_PCT_INT_CTRL,
read_aux_reg(ARC_REG_PCT_INT_CTRL) | (1 << idx));
event = pmu_cpu->act_counter[idx];
hwc = &event->hw;
WARN_ON_ONCE(hwc->idx != idx);
arc_perf_event_update(event, &event->hw, event->hw.idx);
perf_sample_data_init(&data, 0, hwc->last_period);
if (!arc_pmu_event_set_period(event))
continue;
if (arc_pmu_event_set_period(event)) {
if (perf_event_overflow(event, &data, regs))
arc_pmu_stop(event, 0);
}
if (perf_event_overflow(event, &data, regs))
arc_pmu_stop(event, 0);
}
active_ints &= ~(1U << idx);
} while (active_ints);
done:
arc_pmu_enable(&arc_pmu->pmu);
return IRQ_HANDLED;
@ -461,6 +462,7 @@ static int arc_pmu_device_probe(struct platform_device *pdev)
pr_err("This core does not have performance counters!\n");
return -ENODEV;
}
BUILD_BUG_ON(ARC_PERF_MAX_COUNTERS > 32);
BUG_ON(pct_bcr.c > ARC_PERF_MAX_COUNTERS);
READ_BCR(ARC_REG_CC_BUILD, cc_bcr);

43
arch/arc/kernel/setup.c
View File

@ -199,8 +199,10 @@ static void read_arc_build_cfg_regs(void)
unsigned int exec_ctrl;
READ_BCR(AUX_EXEC_CTRL, exec_ctrl);
cpu->extn.dual_iss_exist = 1;
cpu->extn.dual_iss_enb = exec_ctrl & 1;
cpu->extn.dual_enb = exec_ctrl & 1;
/* dual issue always present for this core */
cpu->extn.dual = 1;
}
}
@ -253,7 +255,7 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
cpu_id, cpu->name, cpu->details,
is_isa_arcompact() ? "ARCompact" : "ARCv2",
IS_AVAIL1(cpu->isa.be, "[Big-Endian]"),
IS_AVAIL3(cpu->extn.dual_iss_exist, cpu->extn.dual_iss_enb, " Dual-Issue"));
IS_AVAIL3(cpu->extn.dual, cpu->extn.dual_enb, " Dual-Issue "));
n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s%s%s\nISA Extn\t: ",
IS_AVAIL1(cpu->extn.timer0, "Timer0 "),
@ -293,11 +295,26 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
if (cpu->bpu.ver)
n += scnprintf(buf + n, len - n,
"BPU\t\t: %s%s match, cache:%d, Predict Table:%d\n",
"BPU\t\t: %s%s match, cache:%d, Predict Table:%d",
IS_AVAIL1(cpu->bpu.full, "full"),
IS_AVAIL1(!cpu->bpu.full, "partial"),
cpu->bpu.num_cache, cpu->bpu.num_pred);
if (is_isa_arcv2()) {
struct bcr_lpb lpb;
READ_BCR(ARC_REG_LPB_BUILD, lpb);
if (lpb.ver) {
unsigned int ctl;
ctl = read_aux_reg(ARC_REG_LPB_CTRL);
n += scnprintf(buf + n, len - n, " Loop Buffer:%d %s",
lpb.entries,
IS_DISABLED_RUN(!ctl));
}
}
n += scnprintf(buf + n, len - n, "\n");
return buf;
}
@ -326,6 +343,24 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
cpu->dccm.base_addr, TO_KB(cpu->dccm.sz),
cpu->iccm.base_addr, TO_KB(cpu->iccm.sz));
if (is_isa_arcv2()) {
/* Error Protection: ECC/Parity */
struct bcr_erp erp;
READ_BCR(ARC_REG_ERP_BUILD, erp);
if (erp.ver) {
struct ctl_erp ctl;
READ_BCR(ARC_REG_ERP_CTRL, ctl);
/* inverted bits: 0 means enabled */
n += scnprintf(buf + n, len - n, "Extn [ECC]\t: %s%s%s%s%s%s\n",
IS_AVAIL3(erp.ic, !ctl.dpi, "IC "),
IS_AVAIL3(erp.dc, !ctl.dpd, "DC "),
IS_AVAIL3(erp.mmu, !ctl.mpd, "MMU "));
}
}
n += scnprintf(buf + n, len - n, "OS ABI [v%d]\t: %s\n",
EF_ARC_OSABI_CURRENT >> 8,
EF_ARC_OSABI_CURRENT == EF_ARC_OSABI_V3 ?

57
arch/arc/mm/tlb.c
View File

@ -762,21 +762,23 @@ void read_decode_mmu_bcr(void)
tmp = read_aux_reg(ARC_REG_MMU_BCR);
mmu->ver = (tmp >> 24);
if (mmu->ver <= 2) {
mmu2 = (struct bcr_mmu_1_2 *)&tmp;
mmu->pg_sz_k = TO_KB(0x2000);
mmu->sets = 1 << mmu2->sets;
mmu->ways = 1 << mmu2->ways;
mmu->u_dtlb = mmu2->u_dtlb;
mmu->u_itlb = mmu2->u_itlb;
} else if (mmu->ver == 3) {
mmu3 = (struct bcr_mmu_3 *)&tmp;
mmu->pg_sz_k = 1 << (mmu3->pg_sz - 1);
mmu->sets = 1 << mmu3->sets;
mmu->ways = 1 << mmu3->ways;
mmu->u_dtlb = mmu3->u_dtlb;
mmu->u_itlb = mmu3->u_itlb;
mmu->sasid = mmu3->sasid;
if (is_isa_arcompact()) {
if (mmu->ver <= 2) {
mmu2 = (struct bcr_mmu_1_2 *)&tmp;
mmu->pg_sz_k = TO_KB(0x2000);
mmu->sets = 1 << mmu2->sets;
mmu->ways = 1 << mmu2->ways;
mmu->u_dtlb = mmu2->u_dtlb;
mmu->u_itlb = mmu2->u_itlb;
} else {
mmu3 = (struct bcr_mmu_3 *)&tmp;
mmu->pg_sz_k = 1 << (mmu3->pg_sz - 1);
mmu->sets = 1 << mmu3->sets;
mmu->ways = 1 << mmu3->ways;
mmu->u_dtlb = mmu3->u_dtlb;
mmu->u_itlb = mmu3->u_itlb;
mmu->sasid = mmu3->sasid;
}
} else {
mmu4 = (struct bcr_mmu_4 *)&tmp;
mmu->pg_sz_k = 1 << (mmu4->sz0 - 1);
@ -818,8 +820,9 @@ int pae40_exist_but_not_enab(void)
void arc_mmu_init(void)
{
char str[256];
struct cpuinfo_arc_mmu *mmu = &cpuinfo_arc700[smp_processor_id()].mmu;
char str[256];
int compat = 0;
pr_info("%s", arc_mmu_mumbojumbo(0, str, sizeof(str)));
@ -834,15 +837,21 @@ void arc_mmu_init(void)
*/
BUILD_BUG_ON(!IS_ALIGNED(STACK_TOP, PMD_SIZE));
/* For efficiency sake, kernel is compile time built for a MMU ver
* This must match the hardware it is running on.
* Linux built for MMU V2, if run on MMU V1 will break down because V1
* hardware doesn't understand cmds such as WriteNI, or IVUTLB
* On the other hand, Linux built for V1 if run on MMU V2 will do
* un-needed workarounds to prevent memcpy thrashing.
* Similarly MMU V3 has new features which won't work on older MMU
/*
* Ensure that MMU features assumed by kernel exist in hardware.
* For older ARC700 cpus, it has to be exact match, since the MMU
* revisions were not backwards compatible (MMUv3 TLB layout changed
* so even if kernel for v2 didn't use any new cmds of v3, it would
* still not work.
* For HS cpus, MMUv4 was baseline and v5 is backwards compatible
* (will run older software).
*/
if (mmu->ver != CONFIG_ARC_MMU_VER) {
if (is_isa_arcompact() && mmu->ver == CONFIG_ARC_MMU_VER)
compat = 1;
else if (is_isa_arcv2() && mmu->ver >= CONFIG_ARC_MMU_VER)
compat = 1;
if (!compat) {
panic("MMU ver %d doesn't match kernel built for %d...\n",
mmu->ver, CONFIG_ARC_MMU_VER);
}

2
arch/arc/plat-axs10x/Kconfig
View File

@ -14,6 +14,8 @@ menuconfig ARC_PLAT_AXS10X
select MIGHT_HAVE_PCI
select GENERIC_IRQ_CHIP
select GPIOLIB
select AXS101 if ISA_ARCOMPACT
select AXS103 if ISA_ARCV2
help
Support for the ARC AXS10x Software Development Platforms.

7
arch/arc/plat-axs10x/axs10x.c
View File

@ -111,13 +111,6 @@ static void __init axs10x_early_init(void)
axs10x_enable_gpio_intc_wire();
/*
* Reset ethernet IP core.
* TODO: get rid of this quirk after axs10x reset driver (or simple
* reset driver) will be available in upstream.
*/
iowrite32((1 << 5), (void __iomem *) CREG_MB_SW_RESET);
scnprintf(mb, 32, "MainBoard v%d", mb_rev);
axs10x_print_board_ver(CREG_MB_VER, mb);
}

4
arch/arm/Kconfig.debug
View File

@ -1776,9 +1776,9 @@ config DEBUG_UART_8250_FLOW_CONTROL
default y if ARCH_EBSA110 || DEBUG_FOOTBRIDGE_COM1 || DEBUG_GEMINI || ARCH_RPC
config DEBUG_UNCOMPRESS
bool
bool "Enable decompressor debugging via DEBUG_LL output"
depends on ARCH_MULTIPLATFORM || PLAT_SAMSUNG || ARM_SINGLE_ARMV7M
default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
depends on DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
(!DEBUG_TEGRA_UART || !ZBOOT_ROM) && \
!DEBUG_BRCMSTB_UART
help

6
arch/arm/Makefile
View File

@ -16,11 +16,11 @@ LDFLAGS :=
LDFLAGS_vmlinux :=-p --no-undefined -X --pic-veneer
ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
LDFLAGS_vmlinux += --be8
LDFLAGS_MODULE += --be8
KBUILD_LDFLAGS_MODULE += --be8
endif
ifeq ($(CONFIG_ARM_MODULE_PLTS),y)
LDFLAGS_MODULE += -T $(srctree)/arch/arm/kernel/module.lds
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm/kernel/module.lds
endif
GZFLAGS :=-9
@ -122,7 +122,7 @@ CFLAGS_ISA :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
# Work around buggy relocation from gas if requested:
ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
CFLAGS_MODULE +=-fno-optimize-sibling-calls
KBUILD_CFLAGS_MODULE +=-fno-optimize-sibling-calls
endif
else
CFLAGS_ISA :=$(call cc-option,-marm,)

18
arch/arm/include/asm/assembler.h
View File

@ -518,4 +518,22 @@ THUMB( orr \reg , \reg , #PSR_T_BIT )
#endif
.endm
.macro bug, msg, line
#ifdef CONFIG_THUMB2_KERNEL
1: .inst 0xde02
#else
1: .inst 0xe7f001f2
#endif
#ifdef CONFIG_DEBUG_BUGVERBOSE
.pushsection .rodata.str, "aMS", %progbits, 1
2: .asciz "\msg"
.popsection
.pushsection __bug_table, "aw"
.align 2
.word 1b, 2b
.hword \line
.popsection
#endif
.endm
#endif /* __ASM_ASSEMBLER_H__ */

1
arch/arm/include/asm/pgtable-3level.h
View File

@ -221,7 +221,6 @@ static inline pte_t pte_mkspecial(pte_t pte)
}
#define __HAVE_ARCH_PTE_SPECIAL
#define __HAVE_ARCH_PMD_WRITE
#define pmd_write(pmd) (pmd_isclear((pmd), L_PMD_SECT_RDONLY))
#define pmd_dirty(pmd) (pmd_isset((pmd), L_PMD_SECT_DIRTY))
#define pud_page(pud) pmd_page(__pmd(pud_val(pud)))

12
arch/arm/include/asm/pgtable.h
View File

@ -232,6 +232,18 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd)
#define pte_valid_user(pte) \
(pte_valid(pte) && pte_isset((pte), L_PTE_USER) && pte_young(pte))
static inline bool pte_access_permitted(pte_t pte, bool write)
{
pteval_t mask = L_PTE_PRESENT | L_PTE_USER;
pteval_t needed = mask;
if (write)
mask |= L_PTE_RDONLY;
return (pte_val(pte) & mask) == needed;
}
#define pte_access_permitted pte_access_permitted
#if __LINUX_ARM_ARCH__ < 6
static inline void __sync_icache_dcache(pte_t pteval)
{

6
arch/arm/kernel/entry-header.S
View File

@ -300,6 +300,8 @@
mov r2, sp
ldr r1, [r2, #\offset + S_PSR] @ get calling cpsr
ldr lr, [r2, #\offset + S_PC]! @ get pc
tst r1, #PSR_I_BIT | 0x0f
bne 1f
msr spsr_cxsf, r1 @ save in spsr_svc
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_32v6K)
@ We must avoid clrex due to Cortex-A15 erratum #830321
@ -314,6 +316,7 @@
@ after ldm {}^
add sp, sp, #\offset + PT_REGS_SIZE
movs pc, lr @ return & move spsr_svc into cpsr
1: bug "Returning to usermode but unexpected PSR bits set?", \@
#elif defined(CONFIG_CPU_V7M)
@ V7M restore.
@ Note that we don't need to do clrex here as clearing the local
@ -329,6 +332,8 @@
ldr r1, [sp, #\offset + S_PSR] @ get calling cpsr
ldr lr, [sp, #\offset + S_PC] @ get pc
add sp, sp, #\offset + S_SP
tst r1, #PSR_I_BIT | 0x0f
bne 1f
msr spsr_cxsf, r1 @ save in spsr_svc
@ We must avoid clrex due to Cortex-A15 erratum #830321
@ -341,6 +346,7 @@
.endif
add sp, sp, #PT_REGS_SIZE - S_SP
movs pc, lr @ return & move spsr_svc into cpsr
1: bug "Returning to usermode but unexpected PSR bits set?", \@
#endif /* !CONFIG_THUMB2_KERNEL */
.endm

5
arch/arm/kvm/Kconfig
View File

@ -4,6 +4,7 @@
#
source "virt/kvm/Kconfig"
source "virt/lib/Kconfig"
menuconfig VIRTUALIZATION
bool "Virtualization"
@ -23,6 +24,8 @@ config KVM
select PREEMPT_NOTIFIERS
select ANON_INODES
select ARM_GIC
select ARM_GIC_V3
select ARM_GIC_V3_ITS
select HAVE_KVM_CPU_RELAX_INTERCEPT
select HAVE_KVM_ARCH_TLB_FLUSH_ALL
select KVM_MMIO
@ -36,6 +39,8 @@ config KVM
select HAVE_KVM_IRQCHIP
select HAVE_KVM_IRQ_ROUTING
select HAVE_KVM_MSI
select IRQ_BYPASS_MANAGER
select HAVE_KVM_IRQ_BYPASS
depends on ARM_VIRT_EXT && ARM_LPAE && ARM_ARCH_TIMER
---help---
Support hosting virtualized guest machines.

1
arch/arm/kvm/Makefile
View File

@ -32,6 +32,7 @@ obj-y += $(KVM)/arm/vgic/vgic-init.o
obj-y += $(KVM)/arm/vgic/vgic-irqfd.o
obj-y += $(KVM)/arm/vgic/vgic-v2.o
obj-y += $(KVM)/arm/vgic/vgic-v3.o
obj-y += $(KVM)/arm/vgic/vgic-v4.o
obj-y += $(KVM)/arm/vgic/vgic-mmio.o
obj-y += $(KVM)/arm/vgic/vgic-mmio-v2.o
obj-y += $(KVM)/arm/vgic/vgic-mmio-v3.o

5
arch/arm/mach-iop32x/n2100.c
View File

@ -305,7 +305,7 @@ static void n2100_restart(enum reboot_mode mode, const char *cmd)
static struct timer_list power_button_poll_timer;
static void power_button_poll(unsigned long dummy)
static void power_button_poll(struct timer_list *unused)
{
if (gpio_get_value(N2100_POWER_BUTTON) == 0) {
ctrl_alt_del();
@ -336,8 +336,7 @@ static int __init n2100_request_gpios(void)
pr_err("could not set power GPIO as input\n");
}
/* Set up power button poll timer */
init_timer(&power_button_poll_timer);
power_button_poll_timer.function = power_button_poll;
timer_setup(&power_button_poll_timer, power_button_poll, 0);
power_button_poll_timer.expires = jiffies + (HZ / 10);
add_timer(&power_button_poll_timer);
return 0;

4
arch/arm/mach-ixp4xx/dsmg600-setup.c
View File

@ -179,10 +179,10 @@ static int power_button_countdown;
/* Must hold the button down for at least this many counts to be processed */
#define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */
static void dsmg600_power_handler(unsigned long data);
static void dsmg600_power_handler(struct timer_list *unused);
static DEFINE_TIMER(dsmg600_power_timer, dsmg600_power_handler);
static void dsmg600_power_handler(unsigned long data)
static void dsmg600_power_handler(struct timer_list *unused)
{
/* This routine is called twice per second to check the
* state of the power button.

4
arch/arm/mach-ixp4xx/nas100d-setup.c
View File

@ -202,10 +202,10 @@ static int power_button_countdown;
/* Must hold the button down for at least this many counts to be processed */
#define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */
static void nas100d_power_handler(unsigned long data);
static void nas100d_power_handler(struct timer_list *unused);
static DEFINE_TIMER(nas100d_power_timer, nas100d_power_handler);
static void nas100d_power_handler(unsigned long data)
static void nas100d_power_handler(struct timer_list *unused)
{
/* This routine is called twice per second to check the
* state of the power button.

4
arch/arm/mach-orion5x/db88f5281-setup.c
View File

@ -172,7 +172,7 @@ static struct platform_device db88f5281_nand_flash = {
static void __iomem *db88f5281_7seg;
static struct timer_list db88f5281_timer;
static void db88f5281_7seg_event(unsigned long data)
static void db88f5281_7seg_event(struct timer_list *unused)
{
static int count = 0;
writel(0, db88f5281_7seg + (count << 4));
@ -189,7 +189,7 @@ static int __init db88f5281_7seg_init(void)
printk(KERN_ERR "Failed to ioremap db88f5281_7seg\n");
return -EIO;
}
setup_timer(&db88f5281_timer, db88f5281_7seg_event, 0);
timer_setup(&db88f5281_timer, db88f5281_7seg_event, 0);
mod_timer(&db88f5281_timer, jiffies + 2 * HZ);
}

19
arch/arm/mach-pxa/cm-x255.c
View File

@ -14,7 +14,7 @@
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/nand-gpio.h>
#include <linux/gpio/machine.h>
#include <linux/spi/spi.h>
#include <linux/spi/pxa2xx_spi.h>
@ -176,6 +176,17 @@ static inline void cmx255_init_nor(void) {}
#endif
#if defined(CONFIG_MTD_NAND_GPIO) || defined(CONFIG_MTD_NAND_GPIO_MODULE)
static struct gpiod_lookup_table cmx255_nand_gpiod_table = {
.dev_id = "gpio-nand",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO_NAND_CS, "nce", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO_NAND_CLE, "cle", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO_NAND_ALE, "ale", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO_NAND_RB, "rdy", GPIO_ACTIVE_HIGH),
},
};
static struct resource cmx255_nand_resource[] = {
[0] = {
.start = PXA_CS1_PHYS,
@ -198,11 +209,6 @@ static struct mtd_partition cmx255_nand_parts[] = {
};
static struct gpio_nand_platdata cmx255_nand_platdata = {
.gpio_nce = GPIO_NAND_CS,
.gpio_cle = GPIO_NAND_CLE,
.gpio_ale = GPIO_NAND_ALE,
.gpio_rdy = GPIO_NAND_RB,
.gpio_nwp = -1,
.parts = cmx255_nand_parts,
.num_parts = ARRAY_SIZE(cmx255_nand_parts),
.chip_delay = 25,
@ -220,6 +226,7 @@ static struct platform_device cmx255_nand = {
static void __init cmx255_init_nand(void)
{
gpiod_add_lookup_table(&cmx255_nand_gpiod_table);
platform_device_register(&cmx255_nand);
}
#else

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