Migrate cevt-ds1287 driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.
This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linaro-kernel@lists.linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Patchwork: https://patchwork.linux-mips.org/patch/10603/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Migrate cevt-bcm1480 driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.
This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.
Read operation on R_SCD_TIMER_CFG and R_SCD_TIMER_INIT registers isn't
performed now for many modes as there returned values aren't used.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linaro-kernel@lists.linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Patchwork: https://patchwork.linux-mips.org/patch/10602/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Migrate jz4740 driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.
This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linaro-kernel@lists.linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Patchwork: https://patchwork.linux-mips.org/patch/10601/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Migrate jazz driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.
This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.
We weren't doing anything in the ->set_mode() callback. So, this patch
doesn't provide any set-state callbacks.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linaro-kernel@lists.linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Patchwork: https://patchwork.linux-mips.org/patch/10600/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Migrate alchemy driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.
This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.
We weren't doing anything in the ->set_mode() callback. So, this patch
doesn't provide any set-state callbacks.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linaro-kernel@lists.linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Patchwork: https://patchwork.linux-mips.org/patch/10599/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The generic field definitions (i.e. present before MIPS32/MIPS64) in
mipsregs.h are conventionally not prefixed with MIPS_, so rename the
recently added MIPS_ENTRYLO_* definitions for the G, V, D, and C fields
to ENTRYLO_*. Also rearrange to put the EntryLo and EntryHi definitions
in the right place in the file.
Fixes: 8ab6abcb6a ("MIPS: mipsregs.h: Add EntryLo bit definitions")
Reported-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10725/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The FrameMask register is relevant to the TLB so it should be dumped by
dump_tlb_regs(), however it is only present in certain cores (r10000,
r12000, r14000, r16000). Add dumping of it, conditional upon
current_cpu_type().
Suggested-by: Joshua Kinard <kumba@gentoo.org>
Suggested-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10724/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The PageGrain register may not exist if certain architectural features
aren't present, therefore only print out its value when dumping the TLB
registers if it is expected to contain fields relevant to the TLB.
Fixes: d1e9a4f547 ("MIPS: Add SysRq operation to dump TLBs on all CPUs")
Reported-by: Joshua Kinard <kumba@gentoo.org>
Reported-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10723/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Probe Config3 for small page support. This will be useful to give clues
as to whether the PageGrain register exists.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10722/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The TLB registers are dumped in a couble of places:
- sysrq_tlbdump_single() - when dumping TLB state.
- do_mcheck() - in response to a machine check error.
The main TLB registers also differ between r3k and r4k, but r4k appears
to be assumed.
Refactor this code into a dump_tlb_regs() function, implemented for both
r3k and r4k, and used by both of the above functions.
Fixes: d1e9a4f547 ("MIPS: Add SysRq operation to dump TLBs on all CPUs")
Suggested-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10721/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Commit c8a34581ec ("MIPS: Emulate the BC1{EQ,NE}Z FPU instructions")
added support for emulating the new R6 BC1{EQ,NE}Z branches but it missed
the case where the instruction that caused the exception was not on a DS.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Fixes: c8a34581ec ("MIPS: Emulate the BC1{EQ,NE}Z FPU instructions")
Cc: <stable@vger.kernel.org> # 4.0+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10738/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The mfhc/mthc instructions are supported on MIPS R6 so emulate
them if needed.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: <stable@vger.kernel.org> # 4.0+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10737/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The double format (d_fmt) case uses an opening bracket which then
closes at the end of the word format (w_fmt). This can be rather confusing
so add the closing bracket at the end of the d_fmt case and use another one
for the w_fmt one.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10733/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The MIPS R6 ISA support has been part of mainline since v4.0
and it should be in a good shape nowadays so it is not an
experimental feature anymore.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10731/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
These are bitfields and treating them as signed values doesn't make
any sense.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Chris Packham <judge.packham@gmail.com>
Update __read_32bit_c0_register() and __read_32bit_c0_ctrl_register() to
use "unsigned int res;" instead of "int res;". There is little reason to
treat these register values as signed. They are either counters (which
by definition are unsigned) or are made up of various bit fields to be
interpreted as per the CPU datasheet.
This has come up via u-boot[1] which sync's asm/mipsregs.h with the
kernel. In u-boots case the value read from read_c0_count() is assigned
to an unsigned long [2] which triggers a sign extension and causes a
bug.
U-boot should probably be more explicit about the types used for the
timer_read_counter() API but that aside is there any reason to treat
these values as signed integers? A quick grep around the arch/mips makes
me thing that there may be some bugs lurking when read_c0_count() starts
to yield a negative value but I haven't really explored any of them.
[1] - http://lists.denx.de/pipermail/u-boot/2015-July/219086.html
[2] - http://git.denx.de/?p=u-boot.git;a=blob;f=arch/mips/cpu/time.c#l11
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Chris Packham <judge.packham@gmail.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-kernel@vger.kernel.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/10718/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The default implementation of platform_maar_init is sufficient for Malta
boards where we want to allow speculation in the regions of memory
corresponding to DDR & disallow it elsewhere. Drop the custom
implementation such that the default is used, reducing the duplication
of information provided by the Malta platform code.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/10677/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Introduce a default weak implementation of platform_maar_init which
makes use of the data that platforms already provide to the bootmem
allocator. This should hopefully cover the most common configurations,
reduce the duplication of information provided by platforms & leaves
platforms with the option of providing a custom implementation if
required.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Patchwork: https://patchwork.linux-mips.org/patch/10676/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The MSA architecture specification allows for hardware to not implement
unaligned vector memory accesses in some or all cases. A typical example
of this is the I6400 core which does not implement unaligned vector
memory access when the memory crosses a page boundary. The architecture
also requires that such memory accesses complete successfully as far as
userland is concerned, so the kernel is required to emulate them.
This patch implements support for emulating unaligned MSA ld & st
instructions by copying between the user memory & the tasks FP context
in struct thread_struct, updating hardware registers from there as
appropriate in order to avoid saving & restoring the entire vector
context for each unaligned memory access.
Tested both using an I6400 CPU and with a QEMU build hacked to produce
AdEL exceptions for unaligned vector memory accesses.
[paul.burton@imgtec.com:
- Remove #ifdef's
- Move msa_op into enum major_op rather than #define
- Replace msa_{to,from}_wd with {read,write}_msa_wr_{b,h,w,l} and the
format-agnostic wrappers, removing the custom endian mangling for
big endian systems.
- Restructure the msa_op case in emulate_load_store_insn to share
more code between the load & store cases.
- Avoid the need for a temporary union fpureg on the stack by simply
reusing the already suitably aligned context in struct
thread_struct.
- Use sizeof(*fpr) rather than hardcoding 16 as the size for user
memory checks & copies.
- Stop recalculating the address of the unaligned vector memory access
and rely upon the value read from BadVAddr as we do for other
unaligned memory access instructions.
- Drop the now unused val8 & val16 fields in union fpureg.
- Rewrite commit message.
- General formatting cleanups.]
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-kernel@vger.kernel.org
Cc: Jie Chen <chenj@lemote.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/10573/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Introduce accessor functions allowing the kernel to access arbitrary
vector registers using an arbitrary data format. The accessors are
implemented in assembly, using macros to avoid massive duplication, in
order to make use of the existing support for MSA with & without
toolchain support. The accessors will be used in a later patch.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10572/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Declare a struct describing the MSA MI10 instruction format used for ld &
st instructions, for use by subsequent patches.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/10571/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
"__weak" is defined in include/linux/compiler-gcc.h. We shouldn't need an
arch-specific definition.
Remove the "__weak" definition from arch/mips/include/asm/linkage.h.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10689/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Weak header file declarations are error-prone because they make every
definition weak, and the linker chooses one based on link order (see
10629d711e ("PCI: Remove __weak annotation from pcibios_get_phb_of_node
decl")).
mips_cdmm_phys_base() is defined only in arch/mips/mti-malta/malta-memory.c
so there's no problem with multiple definitions. But it works better to
have a weak default implementation and allow a strong function to override
it. Then we don't have to test whether a definition is present, and if
there are ever multiple strong definitions, we get a link error instead of
calling a random definition.
Add a weak mips_cdmm_phys_base() definition and remove the weak annotation
from the declaration in arch/mips/include/asm/cdmm.h.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10688/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Weak header file declarations are error-prone because they make every
definition weak, and the linker chooses one based on link order (see
10629d711e ("PCI: Remove __weak annotation from pcibios_get_phb_of_node
decl")).
The most elegant solution is to have a weak default implementation and
allow a strong function to override it. Then we don't have to test
whether a definition is present, and if there are ever multiple strong
definitions, we get a link error instead of calling a random definition.
Add a weak get_c0_fdc_int() definition with the default code and remove the
weak annotation from the declaration.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10687/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Weak header file declarations are error-prone because they make every
definition weak, and the linker chooses one based on link order (see
10629d711e ("PCI: Remove __weak annotation from pcibios_get_phb_of_node
decl")).
get_c0_compare_int() is defined in several files. Each definition is weak,
so I assume Kconfig prevents two or more from being included. The caller
contains default code used when get_c0_compare_int() isn't defined at all.
Add a weak get_c0_compare_int() definition with the default code and remove
the weak annotation from the declaration.
Then the platform implementations will be strong and will override the weak
default. If multiple platforms are ever configured in, we'll get a link
error instead of calling a random platform's implementation.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10686/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The size of the Problem State Priority Boost Register is only
32 bits, but the kvm_vcpu_arch->pspb variable is declared as
"ulong", ie. 64-bit. However, the assembler code accesses this
variable with 32-bit accesses, and the KVM_REG_PPC_PSPB macro
is defined with SIZE_U32, too, so that the current code is
broken on big endian hosts: kvmppc_get_one_reg_hv() will only
return zero for this register since it is using the wrong half
of the pspb variable. Let's fix this problem by adjusting the
size of the pspb field in the kvm_vcpu_arch structure.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The code that handles the case when we receive a H_DOORBELL interrupt
has a comment which says "Hypervisor doorbell - exit only if host IPI
flag set". However, the current code does not actually check if the
host IPI flag is set. This is due to a comparison instruction that
got missed.
As a result, the current code performs the exit to host only
if some sibling thread or a sibling sub-core is exiting to the
host. This implies that, an IPI sent to a sibling core in
(subcores-per-core != 1) mode will be missed by the host unless the
sibling core is on the exit path to the host.
This patch adds the missing comparison operation which will ensure
that when HOST_IPI flag is set, we unconditionally exit to the host.
Fixes: 66feed61cd
Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The current dynamic micro-threading code has a race due to which a
secondary thread naps when it is supposed to be running a vcpu. As a
side effect of this, on a guest exit, the primary thread in
kvmppc_wait_for_nap() finds that this secondary thread hasn't cleared
its vcore pointer. This results in "CPU X seems to be stuck!"
warnings.
The race is possible since the primary thread on exiting the guests
only waits for all the secondaries to clear its vcore pointer. It
subsequently expects the secondary threads to enter nap while it
unsplits the core. A secondary thread which hasn't yet entered the nap
will loop in kvm_no_guest until its vcore pointer and the do_nap flag
are unset. Once the core has been unsplit, a new vcpu thread can grab
the core and set the do_nap flag *before* setting the vcore pointers
of the secondary. As a result, the secondary thread will now enter nap
via kvm_unsplit_nap instead of running the guest vcpu.
Fix this by setting the do_nap flag after setting the vcore pointer in
the PACA of the secondary in kvmppc_run_core. Also, ensure that a
secondary thread doesn't nap in kvm_unsplit_nap when the vcore pointer
in its PACA struct is set.
Fixes: b4deba5c41
Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Pull SG updates from Jens Axboe:
"This contains a set of scatter-gather related changes/fixes for 4.3:
- Add support for limited chaining of sg tables even for
architectures that do not set ARCH_HAS_SG_CHAIN. From Christoph.
- Add sg chain support to target_rd. From Christoph.
- Fixup open coded sg->page_link in crypto/omap-sham. From
Christoph.
- Fixup open coded crypto ->page_link manipulation. From Dan.
- Also from Dan, automated fixup of manual sg_unmark_end()
manipulations.
- Also from Dan, automated fixup of open coded sg_phys()
implementations.
- From Robert Jarzmik, addition of an sg table splitting helper that
drivers can use"
* 'for-4.3/sg' of git://git.kernel.dk/linux-block:
lib: scatterlist: add sg splitting function
scatterlist: use sg_phys()
crypto/omap-sham: remove an open coded access to ->page_link
scatterlist: remove open coded sg_unmark_end instances
crypto: replace scatterwalk_sg_chain with sg_chain
target/rd: always chain S/G list
scatterlist: allow limited chaining without ARCH_HAS_SG_CHAIN
Pull core block updates from Jens Axboe:
"This first core part of the block IO changes contains:
- Cleanup of the bio IO error signaling from Christoph. We used to
rely on the uptodate bit and passing around of an error, now we
store the error in the bio itself.
- Improvement of the above from myself, by shrinking the bio size
down again to fit in two cachelines on x86-64.
- Revert of the max_hw_sectors cap removal from a revision again,
from Jeff Moyer. This caused performance regressions in various
tests. Reinstate the limit, bump it to a more reasonable size
instead.
- Make /sys/block/<dev>/queue/discard_max_bytes writeable, by me.
Most devices have huge trim limits, which can cause nasty latencies
when deleting files. Enable the admin to configure the size down.
We will look into having a more sane default instead of UINT_MAX
sectors.
- Improvement of the SGP gaps logic from Keith Busch.
- Enable the block core to handle arbitrarily sized bios, which
enables a nice simplification of bio_add_page() (which is an IO hot
path). From Kent.
- Improvements to the partition io stats accounting, making it
faster. From Ming Lei.
- Also from Ming Lei, a basic fixup for overflow of the sysfs pending
file in blk-mq, as well as a fix for a blk-mq timeout race
condition.
- Ming Lin has been carrying Kents above mentioned patches forward
for a while, and testing them. Ming also did a few fixes around
that.
- Sasha Levin found and fixed a use-after-free problem introduced by
the bio->bi_error changes from Christoph.
- Small blk cgroup cleanup from Viresh Kumar"
* 'for-4.3/core' of git://git.kernel.dk/linux-block: (26 commits)
blk: Fix bio_io_vec index when checking bvec gaps
block: Replace SG_GAPS with new queue limits mask
block: bump BLK_DEF_MAX_SECTORS to 2560
Revert "block: remove artifical max_hw_sectors cap"
blk-mq: fix race between timeout and freeing request
blk-mq: fix buffer overflow when reading sysfs file of 'pending'
Documentation: update notes in biovecs about arbitrarily sized bios
block: remove bio_get_nr_vecs()
fs: use helper bio_add_page() instead of open coding on bi_io_vec
block: kill merge_bvec_fn() completely
md/raid5: get rid of bio_fits_rdev()
md/raid5: split bio for chunk_aligned_read
block: remove split code in blkdev_issue_{discard,write_same}
btrfs: remove bio splitting and merge_bvec_fn() calls
bcache: remove driver private bio splitting code
block: simplify bio_add_page()
block: make generic_make_request handle arbitrarily sized bios
blk-cgroup: Drop unlikely before IS_ERR(_OR_NULL)
block: don't access bio->bi_error after bio_put()
block: shrink struct bio down to 2 cache lines again
...
With the addition of NVDIMM support, a question came up as to
whether NVDIMM ranges should be in the SRAT with this bit set.
I think the consensus was no because the ranges are in the NFIT
with proximity domain information there.
ACPI is not clear on the meaning of this bit in the SRAT.
If someone is setting it, we might want to ask them what they
expect to happen with it.
Right now this bit is only printed if all the ACPI debug
information is turned on.
Signed-off-by: Linda Knippers <linda.knippers@hp.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20150901194154.GA4939@ljkz400
Signed-off-by: Ingo Molnar <mingo@kernel.org>
- ACPICA update to upstream revision 20150818 including method
tracing extensions to allow more in-depth AML debugging in the
kernel and a number of assorted fixes and cleanups (Bob Moore,
Lv Zheng, Markus Elfring).
- ACPI sysfs code updates and a documentation update related to
AML method tracing (Lv Zheng).
- ACPI EC driver fix related to serialized evaluations of _Qxx
methods and ACPI tools updates allowing the EC userspace tool
to be built from the kernel source (Lv Zheng).
- ACPI processor driver updates preparing it for future
introduction of CPPC support and ACPI PCC mailbox driver
updates (Ashwin Chaugule).
- ACPI interrupts enumeration fix for a regression related
to the handling of IRQ attribute conflicts between MADT
and the ACPI namespace (Jiang Liu).
- Fixes related to ACPI device PM (Mika Westerberg, Srinidhi Kasagar).
- ACPI device registration code reorganization to separate the
sysfs-related code and bus type operations from the rest (Rafael
J Wysocki).
- Assorted cleanups in the ACPI core (Jarkko Nikula, Mathias Krause,
Andy Shevchenko, Rafael J Wysocki, Nicolas Iooss).
- ACPI cpufreq driver and ia64 cpufreq driver fixes and cleanups
(Pan Xinhui, Rafael J Wysocki).
- cpufreq core cleanups on top of the previous changes allowing it
to preseve its sysfs directories over system suspend/resume (Viresh
Kumar, Rafael J Wysocki, Sebastian Andrzej Siewior).
- cpufreq fixes and cleanups related to governors (Viresh Kumar).
- cpufreq updates (core and the cpufreq-dt driver) related to the
turbo/boost mode support (Viresh Kumar, Bartlomiej Zolnierkiewicz).
- New DT bindings for Operating Performance Points (OPP), support
for them in the OPP framework and in the cpufreq-dt driver plus
related OPP framework fixes and cleanups (Viresh Kumar).
- cpufreq powernv driver updates (Shilpasri G Bhat).
- New cpufreq driver for Mediatek MT8173 (Pi-Cheng Chen).
- Assorted cpufreq driver (speedstep-lib, sfi, integrator) cleanups
and fixes (Abhilash Jindal, Andrzej Hajda, Cristian Ardelean).
- intel_pstate driver updates including Skylake-S support, support
for enabling HW P-states per CPU and an additional vendor bypass
list entry (Kristen Carlson Accardi, Chen Yu, Ethan Zhao).
- cpuidle core fixes related to the handling of coupled idle states
(Xunlei Pang).
- intel_idle driver updates including Skylake Client support and
support for freeze-mode-specific idle states (Len Brown).
- Driver core updates related to power management (Andy Shevchenko,
Rafael J Wysocki).
- Generic power domains framework fixes and cleanups (Jon Hunter,
Geert Uytterhoeven, Rajendra Nayak, Ulf Hansson).
- Device PM QoS framework update to allow the latency tolerance
setting to be exposed to user space via sysfs (Mika Westerberg).
- devfreq support for PPMUv2 in Exynos5433 and a fix for an incorrect
exynos-ppmu DT binding (Chanwoo Choi, Javier Martinez Canillas).
- System sleep support updates (Alan Stern, Len Brown, SungEun Kim).
- rockchip-io AVS support updates (Heiko Stuebner).
- PM core clocks support fixup (Colin Ian King).
- Power capping RAPL driver update including support for Skylake H/S
and Broadwell-H (Radivoje Jovanovic, Seiichi Ikarashi).
- Generic device properties framework fixes related to the handling
of static (driver-provided) property sets (Andy Shevchenko).
- turbostat and cpupower updates (Len Brown, Shilpasri G Bhat,
Shreyas B Prabhu).
/
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Merge tag 'pm+acpi-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI updates from Rafael Wysocki:
"From the number of commits perspective, the biggest items are ACPICA
and cpufreq changes with the latter taking the lead (over 50 commits).
On the cpufreq front, there are many cleanups and minor fixes in the
core and governors, driver updates etc. We also have a new cpufreq
driver for Mediatek MT8173 chips.
ACPICA mostly updates its debug infrastructure and adds a number of
fixes and cleanups for a good measure.
The Operating Performance Points (OPP) framework is updated with new
DT bindings and support for them among other things.
We have a few updates of the generic power domains framework and a
reorganization of the ACPI device enumeration code and bus type
operations.
And a lot of fixes and cleanups all over.
Included is one branch from the MFD tree as it contains some
PM-related driver core and ACPI PM changes a few other commits are
based on.
Specifics:
- ACPICA update to upstream revision 20150818 including method
tracing extensions to allow more in-depth AML debugging in the
kernel and a number of assorted fixes and cleanups (Bob Moore, Lv
Zheng, Markus Elfring).
- ACPI sysfs code updates and a documentation update related to AML
method tracing (Lv Zheng).
- ACPI EC driver fix related to serialized evaluations of _Qxx
methods and ACPI tools updates allowing the EC userspace tool to be
built from the kernel source (Lv Zheng).
- ACPI processor driver updates preparing it for future introduction
of CPPC support and ACPI PCC mailbox driver updates (Ashwin
Chaugule).
- ACPI interrupts enumeration fix for a regression related to the
handling of IRQ attribute conflicts between MADT and the ACPI
namespace (Jiang Liu).
- Fixes related to ACPI device PM (Mika Westerberg, Srinidhi
Kasagar).
- ACPI device registration code reorganization to separate the
sysfs-related code and bus type operations from the rest (Rafael J
Wysocki).
- Assorted cleanups in the ACPI core (Jarkko Nikula, Mathias Krause,
Andy Shevchenko, Rafael J Wysocki, Nicolas Iooss).
- ACPI cpufreq driver and ia64 cpufreq driver fixes and cleanups (Pan
Xinhui, Rafael J Wysocki).
- cpufreq core cleanups on top of the previous changes allowing it to
preseve its sysfs directories over system suspend/resume (Viresh
Kumar, Rafael J Wysocki, Sebastian Andrzej Siewior).
- cpufreq fixes and cleanups related to governors (Viresh Kumar).
- cpufreq updates (core and the cpufreq-dt driver) related to the
turbo/boost mode support (Viresh Kumar, Bartlomiej Zolnierkiewicz).
- New DT bindings for Operating Performance Points (OPP), support for
them in the OPP framework and in the cpufreq-dt driver plus related
OPP framework fixes and cleanups (Viresh Kumar).
- cpufreq powernv driver updates (Shilpasri G Bhat).
- New cpufreq driver for Mediatek MT8173 (Pi-Cheng Chen).
- Assorted cpufreq driver (speedstep-lib, sfi, integrator) cleanups
and fixes (Abhilash Jindal, Andrzej Hajda, Cristian Ardelean).
- intel_pstate driver updates including Skylake-S support, support
for enabling HW P-states per CPU and an additional vendor bypass
list entry (Kristen Carlson Accardi, Chen Yu, Ethan Zhao).
- cpuidle core fixes related to the handling of coupled idle states
(Xunlei Pang).
- intel_idle driver updates including Skylake Client support and
support for freeze-mode-specific idle states (Len Brown).
- Driver core updates related to power management (Andy Shevchenko,
Rafael J Wysocki).
- Generic power domains framework fixes and cleanups (Jon Hunter,
Geert Uytterhoeven, Rajendra Nayak, Ulf Hansson).
- Device PM QoS framework update to allow the latency tolerance
setting to be exposed to user space via sysfs (Mika Westerberg).
- devfreq support for PPMUv2 in Exynos5433 and a fix for an incorrect
exynos-ppmu DT binding (Chanwoo Choi, Javier Martinez Canillas).
- System sleep support updates (Alan Stern, Len Brown, SungEun Kim).
- rockchip-io AVS support updates (Heiko Stuebner).
- PM core clocks support fixup (Colin Ian King).
- Power capping RAPL driver update including support for Skylake H/S
and Broadwell-H (Radivoje Jovanovic, Seiichi Ikarashi).
- Generic device properties framework fixes related to the handling
of static (driver-provided) property sets (Andy Shevchenko).
- turbostat and cpupower updates (Len Brown, Shilpasri G Bhat,
Shreyas B Prabhu)"
* tag 'pm+acpi-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (180 commits)
cpufreq: speedstep-lib: Use monotonic clock
cpufreq: powernv: Increase the verbosity of OCC console messages
cpufreq: sfi: use kmemdup rather than duplicating its implementation
cpufreq: drop !cpufreq_driver check from cpufreq_parse_governor()
cpufreq: rename cpufreq_real_policy as cpufreq_user_policy
cpufreq: remove redundant 'policy' field from user_policy
cpufreq: remove redundant 'governor' field from user_policy
cpufreq: update user_policy.* on success
cpufreq: use memcpy() to copy policy
cpufreq: remove redundant CPUFREQ_INCOMPATIBLE notifier event
cpufreq: mediatek: Add MT8173 cpufreq driver
dt-bindings: mediatek: Add MT8173 CPU DVFS clock bindings
PM / Domains: Fix typo in description of genpd_dev_pm_detach()
PM / Domains: Remove unusable governor dummies
PM / Domains: Make pm_genpd_init() available to modules
PM / domains: Align column headers and data in pm_genpd_summary output
powercap / RAPL: disable the 2nd power limit properly
tools: cpupower: Fix error when running cpupower monitor
PM / OPP: Drop unlikely before IS_ERR(_OR_NULL)
PM / OPP: Fix static checker warning (broken 64bit big endian systems)
...
Pull x86 clockevent update from Thomas Gleixner:
"A single commit, which converts HPET clockevents driver to the new
callbacks"
* 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/hpet: Migrate to new set_state interface
Pull x86 apic updates from Thomas Gleixner:
"This udpate contains:
- rework the irq vector array to store a pointer to the irq
descriptor instead of the irq number to avoid a lookup of the irq
descriptor in the irq entry path
- lguest interrupt handling cleanups
- conversion of the local apic timer to the new clockevent callbacks
- preparatory changes for the irq argument removal of interrupt flow
handlers"
* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/irq: Do not dereference irq descriptor before checking it
tools/lguest: Clean up include dir
tools/lguest: Fix redefinition of struct virtio_pci_cfg_cap
x86/irq: Store irq descriptor in vector array
genirq: Provide irq_desc_has_action
x86/irq: Get rid of an indentation level
x86/irq: Rename VECTOR_UNDEFINED to VECTOR_UNUSED
x86/irq: Replace numeric constant
x86/irq: Protect smp_cleanup_move
x86/lguest: Do not setup unused irq vectors
x86/lguest: Clean up lguest_setup_irq
x86/apic: Drop local_irq_save/restore in timer callbacks
x86/apic: Migrate apic timer to new set_state interface
x86/irq: Use access helper irq_data_get_affinity_mask()
x86/irq: Use accessor irq_data_get_irq_handler_data()
x86/irq: Use accessor irq_data_get_node()
Pull irq updates from Thomas Gleixner:
"This updated pull request does not contain the last few GIC related
patches which were reported to cause a regression. There is a fix
available, but I let it breed for a couple of days first.
The irq departement provides:
- new infrastructure to support non PCI based MSI interrupts
- a couple of new irq chip drivers
- the usual pile of fixlets and updates to irq chip drivers
- preparatory changes for removal of the irq argument from interrupt
flow handlers
- preparatory changes to remove IRQF_VALID"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (129 commits)
irqchip/imx-gpcv2: IMX GPCv2 driver for wakeup sources
irqchip: Add bcm2836 interrupt controller for Raspberry Pi 2
irqchip: Add documentation for the bcm2836 interrupt controller
irqchip/bcm2835: Add support for being used as a second level controller
irqchip/bcm2835: Refactor handle_IRQ() calls out of MAKE_HWIRQ
PCI: xilinx: Fix typo in function name
irqchip/gic: Ensure gic_cpu_if_up/down() programs correct GIC instance
irqchip/gic: Only allow the primary GIC to set the CPU map
PCI/MSI: pci-xgene-msi: Consolidate chained IRQ handler install/remove
unicore32/irq: Prepare puv3_gpio_handler for irq argument removal
tile/pci_gx: Prepare trio_handle_level_irq for irq argument removal
m68k/irq: Prepare irq handlers for irq argument removal
C6X/megamode-pic: Prepare megamod_irq_cascade for irq argument removal
blackfin: Prepare irq handlers for irq argument removal
arc/irq: Prepare idu_cascade_isr for irq argument removal
sparc/irq: Use access helper irq_data_get_affinity_mask()
sparc/irq: Use helper irq_data_get_irq_handler_data()
parisc/irq: Use access helper irq_data_get_affinity_mask()
mn10300/irq: Use access helper irq_data_get_affinity_mask()
irqchip/i8259: Prepare i8259_irq_dispatch for irq argument removal
...
Pull timer updates from Thomas Gleixner:
"Rather large, but nothing exiting:
- new range check for settimeofday() to prevent that boot time
becomes negative.
- fix for file time rounding
- a few simplifications of the hrtimer code
- fix for the proc/timerlist code so the output of clock realtime
timers is accurate
- more y2038 work
- tree wide conversion of clockevent drivers to the new callbacks"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (88 commits)
hrtimer: Handle failure of tick_init_highres() gracefully
hrtimer: Unconfuse switch_hrtimer_base() a bit
hrtimer: Simplify get_target_base() by returning current base
hrtimer: Drop return code of hrtimer_switch_to_hres()
time: Introduce timespec64_to_jiffies()/jiffies_to_timespec64()
time: Introduce current_kernel_time64()
time: Introduce struct itimerspec64
time: Add the common weak version of update_persistent_clock()
time: Always make sure wall_to_monotonic isn't positive
time: Fix nanosecond file time rounding in timespec_trunc()
timer_list: Add the base offset so remaining nsecs are accurate for non monotonic timers
cris/time: Migrate to new 'set-state' interface
kernel: broadcast-hrtimer: Migrate to new 'set-state' interface
xtensa/time: Migrate to new 'set-state' interface
unicore/time: Migrate to new 'set-state' interface
um/time: Migrate to new 'set-state' interface
sparc/time: Migrate to new 'set-state' interface
sh/localtimer: Migrate to new 'set-state' interface
score/time: Migrate to new 'set-state' interface
s390/time: Migrate to new 'set-state' interface
...
With recent MUSB changes we can now build in support for multiple
DMA implementations. So let's enable DMA by default to make life
easier for distro use.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
ES2.0 is a minor variant of ES1.1. ES2.0 is an incremental revision
with various fixes including the following:
- reset logic fixes
- few assymetric aging logic fixes
- MMC clock rate fixes
- Ethernet speed fixes
- edma fixes for mcasp
NOTE: even though we use a compatible of dra742 and dra752, the usage in
the Linux kernel is more or less interchangable - we use dra752 more
often in the linux kernel compared to dra742 and 4.2-rc6
Signed-off-by: Vishal Mahaveer <vishalm@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Fix the warning:
arch/arm/mach-omap2/vc.c:302:47: warning: logical ‘or’ of collectively exhaustive tests is always true [-Wlogical-op]
As we're toggling both CLKREQ and OFFMODE, we should also be checking
OFFMODE.
Signed-off-by: Frans Klaver <fransklaver@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
When bringing up a new SoC we needlessly prevent booting at timer
init if timer clock_set_parent fails. This can fail if the system
is booting on bootloader configured PLL values until the clock
framework driver for the PLL is implemented.
Let's just WARN instead, this will provide helpful information
for anybody bringing up a new SoC what needs to be fixed.
This allows to boot dm814x that's still missing the PLL driver.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Here's our branch of ARM64 contents for this merge window.
Most of this is DT contents for new SoCs (or those who have seen new
device support added). Maybe we should stop separating out the arm64
contents here to avoid the kind of internal conflicts as we got this
time around, where 32- and 64-bit contents conflicted.
Anyhow, on the actual contents:
New SoCs:
- Broadcom North Star 2 (ns2)
- Marvell Berlin4CT
- Mediatek MT6795
- Rockchip RK3368
In addition, there are enhancements for the following platforms:
- Mediatek MT8173: cpuidle-dt updates, misc other additions
- ZyncMP: A bunch of devices added to the existing DTSI
- Qualcomm MSM8916 and APQ8016 updates for USB, etc.
+ A handful of other updates for various platforms
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Merge tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC 64-bit changes from Olof Johansson:
"Here's our branch of ARM64 contents for this merge window.
Most of this is DT contents for new SoCs (or those who have seen new
device support added). Maybe we should stop separating out the arm64
contents here to avoid the kind of internal conflicts as we got this
time around, where 32- and 64-bit contents conflicted.
Anyhow, on the actual contents:
New SoCs:
- Broadcom North Star 2 (ns2)
- Marvell Berlin4CT
- Mediatek MT6795
- Rockchip RK3368
In addition, there are enhancements for the following platforms:
- Mediatek MT8173: cpuidle-dt updates, misc other additions
- ZyncMP: A bunch of devices added to the existing DTSI
- Qualcomm MSM8916 and APQ8016 updates for USB, etc.
+ a handful of other updates for various platforms"
* tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (47 commits)
ARM64: dts: vexpress: Use assigned-clock-parents for sp810
ARM64: dts: mt6795: enable basic SMP bringup for MT6795
arm64: Enable Marvell Berlin SoC family in defconfig
arm64: Enable Marvell Berlin SoC family in Kconfig
arm64: dts: Add dts files for Marvell Berlin4CT SoC
ARM64: zynqmp: Move SPI nodes to the right location
ARM64: zynqmp: Move uart and ttcs to the right location
ARM64: zynqmp: Enable spi flashes on ep108
ARM64: zynqmp: Add eeprom memories on i2c bus
ARM64: zynqmp: Enable sdhci on ep108
ARM64: zynqmp: Enable watchdog on ep108
ARM64: zynqmp: Add DWC3 usb support
ARM64: zynqmp: Add SMMU support
ARM64: zynqmp: Add CANs node for platform
ARM64: zynqmp: Use zynqmp specific compatible string for gpio
devicetree: xilinx: zynqmp: add sata node
PCI: iproc: Fix BCMA dependency in Kconfig
arm64: dts: Add Broadcom North Star 2 support
arm64: Add Broadcom iProc family support
PCI: iproc: Fix ARM64 dependency in Kconfig
...
We mostly keep defconfigs updates on a separate branch due to their tendency
to conflict between platforms and this encourages more careful separation of
code changes and config changes.
Most updates here are minor tweaks, enabling new drivers for various platforms,
and so on. Renesas also removed one defconfig (marzen_defconfig).
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Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC defconfig updates from Olof Johansson:
"We mostly keep defconfigs updates on a separate branch due to their
tendency to conflict between platforms and this encourages more
careful separation of code changes and config changes.
Most updates here are minor tweaks, enabling new drivers for various
platforms, and so on. Renesas also removed one defconfig
(marzen_defconfig)"
* tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (44 commits)
ARM: add TC2 PM support to multi_v7_defconfig
ARM: tegra: Update multi_v7_defconfig
ARM: tegra: Update default configuration
ARM: at91/defconfig: at91_dt: remove ARM_AT91_ETHER
ARM: at91/defconfig: at91_dt: enable DRM hlcdc support
ARM: at91: at91_dt_defconfig: enable ISI and ov2640 support
ARM: multi_v7_defconfig: Enable Allwinner P2WI, PWM, DMA_SUN6I, cryptodev
ARM: sunxi_defconfig: Enable DMA_SUN6I, P2WI, PWM, cryptodev, EXTCON, FHANDLE
ARM: shmobile: Enable fixed voltage regulator in shmobile_defconfig
ARM: multi_v7_defconfig: Select MX6UL and MX7D
ARM: prima2_defconfig: enable build for hwspinlock
ARM: prima2_defconfig: enable build for RTC
ARM: prima2_defconfig: enable build for misc input
ARM: prima2_defconfig: enable build for SiRFSoC SDHC host
ARM: prima2_defconfig: fix the outdated defconfig
ARM: imx_v6_v7_defconfig: Select CONFIG_IKCONFIG_PROC
ARM: defconfig: orion5x: add DT support
ARM: qcom_defconfig: Enable options for KS8851 ethernet
ARM: multi_v7_defconfig: Enable support for PWM Regulators
ARM: multi_v7_defconfig: Enable ST's PWM driver
...
