Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It will fix NR_PAGETABLE accounting. It's also required if the arch is
going ever support split ptl.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jonas Bonn <jonas@southpole.se>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It will fix NR_PAGETABLE accounting. It's also required if the arch is
going ever support split ptl.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It will fix NR_PAGETABLE accounting. It's also required if the arch is
going ever support split ptl.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In split page table lock case, we embed spinlock_t into struct page.
For obvious reason, we don't want to increase size of struct page if
spinlock_t is too big, like with DEBUG_SPINLOCK or DEBUG_LOCK_ALLOC or
on -rt kernel. So we disable split page table lock, if spinlock_t is
too big.
This patchset allows to allocate the lock dynamically if spinlock_t is
big. In this page->ptl is used to store pointer to spinlock instead of
spinlock itself. It costs additional cache line for indirect access,
but fix page fault scalability for multi-threaded applications.
LOCK_STAT depends on DEBUG_SPINLOCK, so on current kernel enabling
LOCK_STAT to analyse scalability issues breaks scalability. ;)
The patchset mostly fixes this. Results for ./thp_memscale -c 80 -b 512M
on 4-socket machine:
baseline, no CONFIG_LOCK_STAT: 9.115460703 seconds time elapsed
baseline, CONFIG_LOCK_STAT=y: 53.890567123 seconds time elapsed
patched, no CONFIG_LOCK_STAT: 8.852250368 seconds time elapsed
patched, CONFIG_LOCK_STAT=y: 11.069770759 seconds time elapsed
Patch count is scary, but most of them trivial. Overview:
Patches 1-4 Few bug fixes. No dependencies to other patches.
Probably should applied as soon as possible.
Patch 5 Changes signature of pgtable_page_ctor(). We will use it
for dynamic lock allocation, so it can fail.
Patches 6-8 Add missing constructor/destructor calls on few archs.
It's fixes NR_PAGETABLE accounting and prepare to use
split ptl.
Patches 9-33 Add pgtable_page_ctor() fail handling to all archs.
Patches 34 Finally adds support of dynamically-allocated page->pte.
Also contains documentation for split page table lock.
This patch (of 34):
I've missed that we preallocate few pmds on pgd_alloc() if X86_PAE
enabled. Let's add missed constructor/destructor calls.
I haven't noticed it during testing since prep_new_page() clears
page->mapping and therefore page->ptl. It's effectively equal to
spin_lock_init(&page->ptl).
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Howells <dhowells@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently mm->pmd_huge_pte protected by page table lock. It will not
work with split lock. We have to have per-pmd pmd_huge_pte for proper
access serialization.
For now, let's just introduce wrapper to access mm->pmd_huge_pte.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Tested-by: Alex Thorlton <athorlton@sgi.com>
Cc: Alex Thorlton <athorlton@sgi.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: "Eric W . Biederman" <ebiederm@xmission.com>
Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Dave Jones <davej@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Robin Holt <robinmholt@gmail.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark the places when the system are in user or are in kernel.
This is used to make full dynticks system (tickless) --
CONFIG_NO_HZ_FULL dependence.
Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
CONFIG_NO_HZ_FULL requires possibility of smp_send_reschedule()
for the calling CPU. Currently, it is used in inc_nr_running()
scheduler primitive only.
Nobody calls smp_send_reschedule() from preemptible context
(furthermore, it looks like it will be save if anybody use it
another way in the future). But anyway I add WARN_ON() here
just to return here if anything changes.
Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
The SIMBA APB Bridges lacks the 'ranges' of-property describing the
PCI I/O and memory areas located beneath the bridge. Faking this
information has been performed by reading range registers in the
APB bridge, and calculating the corresponding areas.
In commit 01f94c4a6ced476ce69b895426fc29bfc48c69bd
("Fix sabre pci controllers with new probing scheme.") a bug was
introduced into this calculation, causing the PCI memory areas
to be calculated incorrectly: The shift size was set to be
identical for I/O and MEM ranges, which is incorrect.
This patch set the shift size of the MEM range back to the
value used before 01f94c4a6ced476ce69b895426fc29bfc48c69bd.
Signed-off-by: Kjetil Oftedal <oftedal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Modify struct acpi_dev_node to contain a pointer to struct acpi_device
associated with the given device object (that is, its ACPI companion
device) instead of an ACPI handle corresponding to it. Introduce two
new macros for manipulating that pointer in a CONFIG_ACPI-safe way,
ACPI_COMPANION() and ACPI_COMPANION_SET(), and rework the
ACPI_HANDLE() macro to take the above changes into account.
Drop the ACPI_HANDLE_SET() macro entirely and rework its users to
use ACPI_COMPANION_SET() instead. For some of them who used to
pass the result of acpi_get_child() directly to ACPI_HANDLE_SET()
introduce a helper routine acpi_preset_companion() doing an
equivalent thing.
The main motivation for doing this is that there are things
represented by struct acpi_device objects that don't have valid
ACPI handles (so called fixed ACPI hardware features, such as
power and sleep buttons) and we would like to create platform
device objects for them and "glue" them to their ACPI companions
in the usual way (which currently is impossible due to the
lack of valid ACPI handles). However, there are more reasons
why it may be useful.
First, struct acpi_device pointers allow of much better type checking
than void pointers which are ACPI handles, so it should be more
difficult to write buggy code using modified struct acpi_dev_node
and the new macros. Second, the change should help to reduce (over
time) the number of places in which the result of ACPI_HANDLE() is
passed to acpi_bus_get_device() in order to obtain a pointer to the
struct acpi_device associated with the given "physical" device,
because now that pointer is returned by ACPI_COMPANION() directly.
Finally, the change should make it easier to write generic code that
will build both for CONFIG_ACPI set and unset without adding explicit
compiler directives to it.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> # on Haswell
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com> # for ATA and SDIO part
Remove support for DMA unmapping from drivers as it is no longer
needed (DMA core code is now handling it).
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Tomasz Figa <t.figa@samsung.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[djbw: fix up chan2parent() unused warning in drivers/dma/dw/core.c]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
764369 depends on SMP, so don't select it on !SMP configs.
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Rob Herring <rob.herring@calxeda.com>
764369 depends on SMP, so don't select it on !SMP configs.
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Cc: Stuart Menefy <stuart.menefy@st.com>
CPU reset handler was set before fuse is initialized, but
tegra_cpu_reset_handler_enable() uses tegra_chip_id, which is set by
tegra_init_fuse(). This patch reorders the calls so the CPU reset
handler code does not read an uninitialized variable.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Add a single-vendor config for vt8500. We can't enable WM8750 in
multi_v7_defconfig since it's a v6-based device, but it's still valuable
to have an in-tree defconfig that is suitable for the hardware.
This is based on multi_v7_defconfig and can be tweaked over time. It
gets us off the ground for now. Naming it vt8500_v6_v7 similar to i.MX
since there are v5-based vt8500 chips as well.
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
This turns on the internal integrator LCD display(s). It seems that the code
to do this got lost in refactoring of the CLCD driver.
Signed-off-by: Jonathan Austin <jonathan.austin@arm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>
In case of error, the function platform_device_register_resndata()
returns ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Make sure that seccomp filter won't be built when ARM OABI is in use,
since there is work needed to distinguish calling conventions. Until
that is done (which is likely never since OABI is deprecated), make
sure seccomp filter is unavailable in the OABI world.
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Will Drewry <wad@chromium.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Given recent discussions about the lack of OABI in the wild, switch
CONFIG_OABI_COMPAT to off-by-default to encourage more system builders
to avoid it.
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
LPAE enabled kernels use the 64-bit version of TTBR0 and TTBR1
registers. If we're running an LPAE kernel, fill the upper half
of TTBR0 with 0 because we're setting it to the idmap here (the
idmap is guaranteed to be < 4Gb) and fully restore TTBR1 instead
of just restoring the lower 32 bits. Failure to do so can cause
failures on resume from suspend when these registers are only
half restored.
Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ECC policy can be applied to the whole system
when this bit is implemented by SoC vendor
(IMP - bit 9 - in L1 page table entry format).
When this bit is not implemented by SoC vendor
it doesn't mean that system has no other way
how to do ECC.
This patch ensures to show this message only when ECC
is requested via cmd line ecc=on and runs on
appropriate ARM core.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix patching code to convert mov instruction into mvn instruction
in case of CONFIG_ARCH_PHYS_ADDR_T_64BIT and CONFIG_ARM_PATCH_PHYS_VIRT.
In BE case store into r0 proper bits so byte swapped instruction
could be modified correctly.
Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Reviewed-by: R Sricharan <r.sricharan@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Make sure that inline assembler that expects 'r' operand
receives 32 bit value.
Before this fix in case of CONFIG_ARCH_PHYS_ADDR_T_64BIT and
CONFIG_ARM_PATCH_PHYS_VIRT __phys_to_virt function passed 64 bit
value to __pv_stub inline assembler where 'r' operand is
expected. Compiler behavior in such case is not well specified.
It worked in little endian case, but in big endian case
incorrect code was generated, where compiler confused which
part of 64 bit value it needed to modify. For example BE
snippet looked like this:
N:0x80904E08 : MOV r2,#0
N:0x80904E0C : SUB r2,r2,#0x81000000
when LE similar code looked like this
N:0x808FCE2C : MOV r2,r0
N:0x808FCE30 : SUB r2,r2,#0xc0, 8 ; #0xc0000000
Note 'r0' register is va that have to be translated into phys
To avoid this situation use explicit cast to 'unsigned long',
which explicitly discard upper part of phys address and convert
value to 32 bit. Also add comment so such cast will not be
removed in the future.
Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Commit "bc41b8724f24b9a27d1dcc6c974b8f686b38d554 ARM: 7846/1:
Update SMP_ON_UP code to detect A9MPCore with 1 CPU devices"
added read of SCU config register into __fixup_smp function.
Such read should be followed by byteswap, if kernel runs in
BE mode.
Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The 0-day kernel build robot found this new warning:
arch/arm/mm/nommu.c:303:17: warning: 'struct proc_info_list' declared inside parameter list [enabled by default]
arch/arm/mm/nommu.c:303:17: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
Fix it by including the appropriate header.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
We've always been able to use either method on VLV, but it appears more
recent BIOSes only support the gen6 method, so switch over to that.
References: https://bugs.freedesktop.org/show_bug.cgi?id=71370
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Pull two x86 fixes from Ingo Molnar.
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode/amd: Tone down printk(), don't treat a missing firmware file as an error
x86/dumpstack: Fix printk_address for direct addresses
Pull core locking changes from Ingo Molnar:
"The biggest changes:
- add lockdep support for seqcount/seqlocks structures, this
unearthed both bugs and required extra annotation.
- move the various kernel locking primitives to the new
kernel/locking/ directory"
* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
block: Use u64_stats_init() to initialize seqcounts
locking/lockdep: Mark __lockdep_count_forward_deps() as static
lockdep/proc: Fix lock-time avg computation
locking/doc: Update references to kernel/mutex.c
ipv6: Fix possible ipv6 seqlock deadlock
cpuset: Fix potential deadlock w/ set_mems_allowed
seqcount: Add lockdep functionality to seqcount/seqlock structures
net: Explicitly initialize u64_stats_sync structures for lockdep
locking: Move the percpu-rwsem code to kernel/locking/
locking: Move the lglocks code to kernel/locking/
locking: Move the rwsem code to kernel/locking/
locking: Move the rtmutex code to kernel/locking/
locking: Move the semaphore core to kernel/locking/
locking: Move the spinlock code to kernel/locking/
locking: Move the lockdep code to kernel/locking/
locking: Move the mutex code to kernel/locking/
hung_task debugging: Add tracepoint to report the hang
x86/locking/kconfig: Update paravirt spinlock Kconfig description
lockstat: Report avg wait and hold times
lockdep, x86/alternatives: Drop ancient lockdep fixup message
...
Pull x86/trace changes from Ingo Molnar:
"This adds page fault tracepoints which have zero runtime cost in the
disabled case via IDT trickery (no NOPs in the page fault hotpath)"
* 'x86-trace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, trace: Change user|kernel_page_fault to page_fault_user|kernel
x86, trace: Add page fault tracepoints
x86, trace: Delete __trace_alloc_intr_gate()
x86, trace: Register exception handler to trace IDT
x86, trace: Remove __alloc_intr_gate()
Nothing particularly stands out in this pull request. The biggest part of the
changes are cleanups.
Maybe one fix to mention is the "fb: reorder the lock sequence to fix potential
dead lock" which hopefully fixes the fb locking issues reported by multiple
persons.
There are also a few commits that have changes to arch/arm/mach-at91 and
arch/avr32, which have been acked by the maintainers.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.14 (GNU/Linux)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=59+j
-----END PGP SIGNATURE-----
Merge tag 'fbdev-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
Pull fbdev changes from Tomi Valkeinen:
"Nothing particularly stands out in this pull request. The biggest
part of the changes are cleanups.
Maybe one fix to mention is the "fb: reorder the lock sequence to fix
potential dead lock" which hopefully fixes the fb locking issues
reported by multiple persons.
There are also a few commits that have changes to arch/arm/mach-at91
and arch/avr32, which have been acked by the maintainers"
* tag 'fbdev-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (143 commits)
fb: reorder the lock sequence to fix potential dead lock
fbdev: shmobile-lcdcfb: Convert to clk_prepare/unprepare
fbdev: shmobile-hdmi: Convert to clk_prepare/unprepare
omapdss: Add new panel driver for Topolly td028ttec1 LCD.
video: exynos_mipi_dsi: Unlock the mutex before returning
video: da8xx-fb: remove unwanted define
video: Remove unnecessary semicolons
simplefb: use write-combined remapping
simplefb: fix unmapping fb during destruction
OMAPDSS: connector-dvi: fix releasing i2c_adapter
OMAPDSS: DSI: fix perf measuring ifdefs
framebuffer: Use fb_<level>
framebuffer: Add fb_<level> convenience logging macros
efifb: prevent null-deref when iterating dmi_list
fbdev: fix error return code in metronomefb_probe()
video: xilinxfb: Fix for "Use standard variable name convention"
OMAPDSS: Fix de_level in videomode_to_omap_video_timings()
video: xilinxfb: Simplify error path
video: xilinxfb: Use devm_kzalloc instead of kzalloc
video: xilinxfb: Use standard variable name convention
...
- New power capping framework and the the Intel Running Average Power
Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan.
- Addition of the in-kernel switching feature to the arm_big_little
cpufreq driver from Viresh Kumar and Nicolas Pitre.
- cpufreq support for iMac G5 from Aaro Koskinen.
- Baytrail processors support for intel_pstate from Dirk Brandewie.
- cpufreq support for Midway/ECX-2000 from Mark Langsdorf.
- ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha.
- ACPI power management support for the I2C and SPI bus types from
Mika Westerberg and Lv Zheng.
- cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat,
Stratos Karafotis, Xiaoguang Chen, Lan Tianyu.
- cpufreq drivers updates (mostly fixes and cleanups) from Viresh Kumar,
Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz Majewski,
Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev.
- intel_pstate updates from Dirk Brandewie and Adrian Huang.
- ACPICA update to version 20130927 includig fixes and cleanups and
some reduction of divergences between the ACPICA code in the kernel
and ACPICA upstream in order to improve the automatic ACPICA patch
generation process. From Bob Moore, Lv Zheng, Tomasz Nowicki,
Naresh Bhat, Bjorn Helgaas, David E Box.
- ACPI IPMI driver fixes and cleanups from Lv Zheng.
- ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani,
Zhang Yanfei, Rafael J Wysocki.
- Conversion of the ACPI AC driver to the platform bus type and
multiple driver fixes and cleanups related to ACPI from Zhang Rui.
- ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu,
Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki.
- Fixes and cleanups and new blacklist entries related to the ACPI
video support from Aaron Lu, Felipe Contreras, Lennart Poettering,
Kirill Tkhai.
- cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi.
- cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han,
Bartlomiej Zolnierkiewicz, Prarit Bhargava.
- devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe.
- Operation Performance Points (OPP) core updates from Nishanth Menon.
- Runtime power management core fix from Rafael J Wysocki and update
from Ulf Hansson.
- Hibernation fixes from Aaron Lu and Rafael J Wysocki.
- Device suspend/resume lockup detection mechanism from Benoit Goby.
- Removal of unused proc directories created for various ACPI drivers
from Lan Tianyu.
- ACPI LPSS driver fix and new device IDs for the ACPI platform scan
handler from Heikki Krogerus and Jarkko Nikula.
- New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa.
- Assorted fixes and cleanups related to ACPI from Andy Shevchenko,
Al Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter,
Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause,
Liu Chuansheng.
- Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding,
Jean-Christophe Plagniol-Villard.
/
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)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=JCxk
-----END PGP SIGNATURE-----
Merge tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael J Wysocki:
- New power capping framework and the the Intel Running Average Power
Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan.
- Addition of the in-kernel switching feature to the arm_big_little
cpufreq driver from Viresh Kumar and Nicolas Pitre.
- cpufreq support for iMac G5 from Aaro Koskinen.
- Baytrail processors support for intel_pstate from Dirk Brandewie.
- cpufreq support for Midway/ECX-2000 from Mark Langsdorf.
- ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha.
- ACPI power management support for the I2C and SPI bus types from Mika
Westerberg and Lv Zheng.
- cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat,
Stratos Karafotis, Xiaoguang Chen, Lan Tianyu.
- cpufreq drivers updates (mostly fixes and cleanups) from Viresh
Kumar, Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz
Majewski, Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev.
- intel_pstate updates from Dirk Brandewie and Adrian Huang.
- ACPICA update to version 20130927 includig fixes and cleanups and
some reduction of divergences between the ACPICA code in the kernel
and ACPICA upstream in order to improve the automatic ACPICA patch
generation process. From Bob Moore, Lv Zheng, Tomasz Nowicki, Naresh
Bhat, Bjorn Helgaas, David E Box.
- ACPI IPMI driver fixes and cleanups from Lv Zheng.
- ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani, Zhang
Yanfei, Rafael J Wysocki.
- Conversion of the ACPI AC driver to the platform bus type and
multiple driver fixes and cleanups related to ACPI from Zhang Rui.
- ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu,
Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki.
- Fixes and cleanups and new blacklist entries related to the ACPI
video support from Aaron Lu, Felipe Contreras, Lennart Poettering,
Kirill Tkhai.
- cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi.
- cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han,
Bartlomiej Zolnierkiewicz, Prarit Bhargava.
- devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe.
- Operation Performance Points (OPP) core updates from Nishanth Menon.
- Runtime power management core fix from Rafael J Wysocki and update
from Ulf Hansson.
- Hibernation fixes from Aaron Lu and Rafael J Wysocki.
- Device suspend/resume lockup detection mechanism from Benoit Goby.
- Removal of unused proc directories created for various ACPI drivers
from Lan Tianyu.
- ACPI LPSS driver fix and new device IDs for the ACPI platform scan
handler from Heikki Krogerus and Jarkko Nikula.
- New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa.
- Assorted fixes and cleanups related to ACPI from Andy Shevchenko, Al
Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter,
Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause,
Liu Chuansheng.
- Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding,
Jean-Christophe Plagniol-Villard.
* tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (386 commits)
cpufreq: conservative: fix requested_freq reduction issue
ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines
PM / runtime: Use pm_runtime_put_sync() in __device_release_driver()
ACPI / event: remove unneeded NULL pointer check
Revert "ACPI / video: Ignore BIOS initial backlight value for HP 250 G1"
ACPI / video: Quirk initial backlight level 0
ACPI / video: Fix initial level validity test
intel_pstate: skip the driver if ACPI has power mgmt option
PM / hibernate: Avoid overflow in hibernate_preallocate_memory()
ACPI / hotplug: Do not execute "insert in progress" _OST
ACPI / hotplug: Carry out PCI root eject directly
ACPI / hotplug: Merge device hot-removal routines
ACPI / hotplug: Make acpi_bus_hot_remove_device() internal
ACPI / hotplug: Simplify device ejection routines
ACPI / hotplug: Fix handle_root_bridge_removal()
ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug
ACPI / scan: Start matching drivers after trying scan handlers
ACPI: Remove acpi_pci_slot_init() headers from internal.h
ACPI / blacklist: fix name of ThinkPad Edge E530
PowerCap: Fix build error with option -Werror=format-security
...
Conflicts:
arch/arm/mach-omap2/opp.c
drivers/Kconfig
drivers/spi/spi.c
* Unify some compile-time differences so that we have fewer uses of
#ifdef CONFIG_OF in atmel_nand
* Other general cleanups (removing unused functions, options, variables,
fields; use correct interfaces)
* Fix BUG() for new odd-sized NAND, which report non-power-of-2 dimensions via
ONFI
* Miscellaneous driver fixes (SPI NOR flash; BCM47xx NAND flash; etc.)
* Improve differentiation between SLC and MLC NAND -- this clarifies an ABI
issue regarding the MTD "type" (in sysfs and in ioctl(MEMGETINFO)), where
the MTD_MLCNANDFLASH type was present but inconsistently used
* Extend GPMI NAND to support multi-chip-select NAND for some platforms
* Many improvements to the OMAP2/3 NAND driver, including an expanded DT
binding to bring us closer to mainline support for some OMAP systems
* Fix a deadlock in the error path of the Atmel NAND driver probe
* Correct the error codes from MTD mmap() to conform to POSIX and the Linux
Programmer's Manual. This is an acknowledged change in the MTD ABI, but I
can't imagine somebody relying on the non-standard -ENOSYS error code
specifically. Am I just being unimaginative? :)
* Fix a few important GPMI NAND bugs (one regression from 3.12 and one
long-standing race condition)
* More? Read the log!
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.14 (GNU/Linux)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=z5qO
-----END PGP SIGNATURE-----
Merge tag 'for-linus-20131112' of git://git.infradead.org/linux-mtd
Pull MTD changes from Brian Norris:
- Unify some compile-time differences so that we have fewer uses of
#ifdef CONFIG_OF in atmel_nand
- Other general cleanups (removing unused functions, options,
variables, fields; use correct interfaces)
- Fix BUG() for new odd-sized NAND, which report non-power-of-2
dimensions via ONFI
- Miscellaneous driver fixes (SPI NOR flash; BCM47xx NAND flash; etc.)
- Improve differentiation between SLC and MLC NAND -- this clarifies an
ABI issue regarding the MTD "type" (in sysfs and in the MEMGETINFO
ioctl), where the MTD_MLCNANDFLASH type was present but
inconsistently used
- Extend GPMI NAND to support multi-chip-select NAND for some platforms
- Many improvements to the OMAP2/3 NAND driver, including an expanded
DT binding to bring us closer to mainline support for some OMAP
systems
- Fix a deadlock in the error path of the Atmel NAND driver probe
- Correct the error codes from MTD mmap() to conform to POSIX and the
Linux Programmer's Manual. This is an acknowledged change in the MTD
ABI, but I can't imagine somebody relying on the non-standard -ENOSYS
error code specifically. Am I just being unimaginative? :)
- Fix a few important GPMI NAND bugs (one regression from 3.12 and one
long-standing race condition)
- More? Read the log!
* tag 'for-linus-20131112' of git://git.infradead.org/linux-mtd: (98 commits)
mtd: gpmi: fix the NULL pointer
mtd: gpmi: fix kernel BUG due to racing DMA operations
mtd: mtdchar: return expected errors on mmap() call
mtd: gpmi: only scan two chips for imx6
mtd: gpmi: Use devm_kzalloc()
mtd: atmel_nand: fix bug driver will in a dead lock if no nand detected
mtd: nand: use a local variable to simplify the nand_scan_tail
mtd: nand: remove deprecated IRQF_DISABLED
mtd: dataflash: Say if we find a device we don't support
mtd: nand: omap: fix error return code in omap_nand_probe()
mtd: nand_bbt: kill NAND_BBT_SCANALLPAGES
mtd: m25p80: fixup device removal failure path
mtd: mxc_nand: Include linux/of.h header
mtd: remove duplicated include from mtdcore.c
mtd: m25p80: add support for Macronix mx25l3255e
mtd: nand: omap: remove selection of BCH ecc-scheme via KConfig
mtd: nand: omap: updated devm_xx for all resource allocation and free calls
mtd: nand: omap: use drivers/mtd/nand/nand_bch.c wrapper for BCH ECC instead of lib/bch.c
mtd: nand: omap: clean-up ecc layout for BCH ecc schemes
mtd: nand: omap2: clean-up BCHx_HW and BCHx_SW ECC configurations in device_probe
...
Pull ARM updates from Russell King:
"Included in this series are:
1. BE8 (modern big endian) changes for ARM from Ben Dooks
2. big.Little support from Nicolas Pitre and Dave Martin
3. support for LPAE systems with all system memory above 4GB
4. Perf updates from Will Deacon
5. Additional prefetching and other performance improvements from Will.
6. Neon-optimised AES implementation fro Ard.
7. A number of smaller fixes scattered around the place.
There is a rather horrid merge conflict in tools/perf - I was never
notified of the conflict because it originally occurred between Will's
tree and other stuff. Consequently I have a resolution which Will
forwarded me, which I'll forward on immediately after sending this
mail.
The other notable thing is I'm expecting some build breakage in the
crypto stuff on ARM only with Ard's AES patches. These were merged
into a stable git branch which others had already pulled, so there's
little I can do about this. The problem is caused because these
patches have a dependency on some code in the crypto git tree - I
tried requesting a branch I can pull to resolve these, and all I got
each time from the crypto people was "we'll revert our patches then"
which would only make things worse since I still don't have the
dependent patches. I've no idea what's going on there or how to
resolve that, and since I can't split these patches from the rest of
this pull request, I'm rather stuck with pushing this as-is or
reverting Ard's patches.
Since it should "come out in the wash" I've left them in - the only
build problems they seem to cause at the moment are with randconfigs,
and since it's a new feature anyway. However, if by -rc1 the
dependencies aren't in, I think it'd be best to revert Ard's patches"
I resolved the perf conflict roughly as per the patch sent by Russell,
but there may be some differences. Any errors are likely mine. Let's
see how the crypto issues work out..
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (110 commits)
ARM: 7868/1: arm/arm64: remove atomic_clear_mask() in "include/asm/atomic.h"
ARM: 7867/1: include: asm: use 'int' instead of 'unsigned long' for 'oldval' in atomic_cmpxchg().
ARM: 7866/1: include: asm: use 'long long' instead of 'u64' within atomic.h
ARM: 7871/1: amba: Extend number of IRQS
ARM: 7887/1: Don't smp_cross_call() on UP devices in arch_irq_work_raise()
ARM: 7872/1: Support arch_irq_work_raise() via self IPIs
ARM: 7880/1: Clear the IT state independent of the Thumb-2 mode
ARM: 7878/1: nommu: Implement dummy early_paging_init()
ARM: 7876/1: clear Thumb-2 IT state on exception handling
ARM: 7874/2: bL_switcher: Remove cpu_hotplug_driver_{lock,unlock}()
ARM: footbridge: fix build warnings for netwinder
ARM: 7873/1: vfp: clear vfp_current_hw_state for dying cpu
ARM: fix misplaced arch_virt_to_idmap()
ARM: 7848/1: mcpm: Implement cpu_kill() to synchronise on powerdown
ARM: 7847/1: mcpm: Factor out logical-to-physical CPU translation
ARM: 7869/1: remove unused XSCALE_PMU Kconfig param
ARM: 7864/1: Handle 64-bit memory in case of 32-bit phys_addr_t
ARM: 7863/1: Let arm_add_memory() always use 64-bit arguments
ARM: 7862/1: pcpu: replace __get_cpu_var_uses
ARM: 7861/1: cacheflush: consolidate single-CPU ARMv7 cache disabling code
...
Pull DMA mask updates from Russell King:
"This series cleans up the handling of DMA masks in a lot of drivers,
fixing some bugs as we go.
Some of the more serious errors include:
- drivers which only set their coherent DMA mask if the attempt to
set the streaming mask fails.
- drivers which test for a NULL dma mask pointer, and then set the
dma mask pointer to a location in their module .data section -
which will cause problems if the module is reloaded.
To counter these, I have introduced two helper functions:
- dma_set_mask_and_coherent() takes care of setting both the
streaming and coherent masks at the same time, with the correct
error handling as specified by the API.
- dma_coerce_mask_and_coherent() which resolves the problem of
drivers forcefully setting DMA masks. This is more a marker for
future work to further clean these locations up - the code which
creates the devices really should be initialising these, but to fix
that in one go along with this change could potentially be very
disruptive.
The last thing this series does is prise away some of Linux's addition
to "DMA addresses are physical addresses and RAM always starts at
zero". We have ARM LPAE systems where all system memory is above 4GB
physical, hence having DMA masks interpreted by (eg) the block layers
as describing physical addresses in the range 0..DMAMASK fails on
these platforms. Santosh Shilimkar addresses this in this series; the
patches were copied to the appropriate people multiple times but were
ignored.
Fixing this also gets rid of some ARM weirdness in the setup of the
max*pfn variables, and brings ARM into line with every other Linux
architecture as far as those go"
* 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm: (52 commits)
ARM: 7805/1: mm: change max*pfn to include the physical offset of memory
ARM: 7797/1: mmc: Use dma_max_pfn(dev) helper for bounce_limit calculations
ARM: 7796/1: scsi: Use dma_max_pfn(dev) helper for bounce_limit calculations
ARM: 7795/1: mm: dma-mapping: Add dma_max_pfn(dev) helper function
ARM: 7794/1: block: Rename parameter dma_mask to max_addr for blk_queue_bounce_limit()
ARM: DMA-API: better handing of DMA masks for coherent allocations
ARM: 7857/1: dma: imx-sdma: setup dma mask
DMA-API: firmware/google/gsmi.c: avoid direct access to DMA masks
DMA-API: dcdbas: update DMA mask handing
DMA-API: dma: edma.c: no need to explicitly initialize DMA masks
DMA-API: usb: musb: use platform_device_register_full() to avoid directly messing with dma masks
DMA-API: crypto: remove last references to 'static struct device *dev'
DMA-API: crypto: fix ixp4xx crypto platform device support
DMA-API: others: use dma_set_coherent_mask()
DMA-API: staging: use dma_set_coherent_mask()
DMA-API: usb: use new dma_coerce_mask_and_coherent()
DMA-API: usb: use dma_set_coherent_mask()
DMA-API: parport: parport_pc.c: use dma_coerce_mask_and_coherent()
DMA-API: net: octeon: use dma_coerce_mask_and_coherent()
DMA-API: net: nxp/lpc_eth: use dma_coerce_mask_and_coherent()
...
Now that we have 64-bits for PMDs we can stop using special encodings
for the huge PMD values, and just put real PTEs in there.
We allocate a _PAGE_PMD_HUGE bit to distinguish between plain PMDs and
huge ones. It is the same for both 4U and 4V PTE layouts.
We also use _PAGE_SPECIAL to indicate the splitting state, since a
huge PMD cannot also be special.
All of the PMD --> PTE translation code disappears, and most of the
huge PMD bit modifications and tests just degenerate into the PTE
operations. In particular USER_PGTABLE_CHECK_PMD_HUGE becomes
trivial.
As a side effect, normal PMDs don't shift the physical address around.
This also speeds up the page table walks in the TLB miss paths since
they don't have to do the shifts any more.
Another non-trivial aspect is that pte_modify() has to be changed
to preserve the _PAGE_PMD_HUGE bits as well as the page size field
of the pte.
Signed-off-by: David S. Miller <davem@davemloft.net>
The low level preemption code fiddles with the PREEMPT_ACTIVE bit for
no reason and calls schedule() with interrupts disabled, which is
wrong to begin with. Remove the PREEMPT_ACTIVE fiddling and call the
proper schedule_preempt_irq() function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Link: http://lkml.kernel.org/r/20130917183628.966769884@linutronix.de
