| Age | Commit message (Collapse) | Author | Files | Lines |
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The kernel perf event creation path shouldn't use find_task_by_vpid()
because a vpid exists in a specific namespace. find_task_by_vpid() uses
current's pid namespace which isn't always the correct namespace to use
for the vpid in all the places perf_event_create_kernel_counter() (and
thus find_get_context()) is called.
The goal is to clean up pid namespace handling and prevent bugs like:
https://bugzilla.kernel.org/show_bug.cgi?id=17281
Instead of using pids switch find_get_context() to use task struct
pointers directly. The syscall is responsible for resolving the pid to
a task struct. This moves the pid namespace resolution into the syscall
much like every other syscall that takes pid parameters.
Signed-off-by: Matt Helsley <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: Robin Green <[email protected]>
Cc: Prasad <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Mahesh Salgaonkar <[email protected]>
LKML-Reference: <a134e5e392ab0204961fd1a62c84a222bf5874a9.1284407763.git.matthltc@us.ibm.com>
Signed-off-by: Ingo Molnar <[email protected]>
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3f6da390 ("perf: Rework and fix the arch CPU-hotplug hooks") introduced
this breakage. sh_pmu_setup() is missing an opening curly brace.
Signed-off-by: Peter Zijlstra <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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Also fix a few compile errors due to undefined and duplicated
variables.
Signed-off-by: Michael Cree <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k,m68knommu: Wire up fanotify_init, fanotify_mark, and prlimit64
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] fix siglock
Quoth Tony:
"I committed the fix for this last week prior to your -rc4 announcement
reminding us to give proper "Reported-by:" credit. This one should have
had:
Reported-by: Tony Ernst <[email protected]>
and also
Much-useful-investigation-and-tracing-by: Hedi Berriche <[email protected]>
Much-useful-investigation-and-tracing-by: Petr Tesarik <[email protected]>"
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Signed-off-by: Geert Uytterhoeven <[email protected]>
Acked-by: Greg Ungerer <[email protected]>
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Fix a bug introduced with commit de725de and the change in the
meaning of the return value of intel_pmu_handle_irq(). With the
current code, when you are using the BTS, you get 'dazed by NMI'
each time the BTS buffer fills up.
BTS does interrupt on the PMU vector, thus NMI. You need to take
this into account in the return value of the function.
This version fixes initial patch which was missing changes to
perf_event_intel_ds.c.
Signed-off-by: Stephane Eranian <[email protected]>
Acked-by: Don Zickus <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc: Kill all BKL usage.
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A real life genuine preemption leak..
Reported-and-tested-by: Jeff Chua <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Acked-by: Suresh Siddha <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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* 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: Perform hardware_enable in CPU_STARTING callback
KVM: i8259: fix migration
KVM: fix i8259 oops when no vcpus are online
KVM: x86 emulator: fix regression with cmpxchg8b on i386 hosts
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* 'at91-fixes-for-linus' of git://github.com/at91linux/linux-2.6-at91:
AT91: at91sam9261ek: remove C99 comments but keep information
AT91: at91sam9261ek board: remove warnings related to use of SPI or SD/MMC
AT91: dm9000 initialization update
AT91: SAM9G45 - add a separate clock entry for every single TC block
AT91: clock: peripheral clocks can have other parent than mck
AT91: change dma resource index
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Signed-off-by: Nicolas Ferre <[email protected]>
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The sd/mmc data structure is not used if SPI is selected. The configuration
of PIO on the board prevent from using both interfaces at the same time
(board dependent).
Remove the warnings at compilation time adding a preprocessor condition.
Signed-off-by: Nicolas Ferre <[email protected]>
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Add information in dm9000 mac/phy chip initialization:
- irq resource details
- platform data details
Signed-off-by: Nicolas Ferre <[email protected]>
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The slab.h header is required to use the kmalloc() family of functions.
Due to recent kernel changes, this header must be directly included by
code that calls into the memory allocator.
Without this patch, any code which includes this header fails to build.
Signed-off-by: Ira W. Snyder <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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* master.kernel.org:/home/rmk/linux-2.6-arm: (30 commits)
ARM: Update mach-types
ARM: Partially revert "Auto calculate ZRELADDR and provide option for exceptions"
ARM: Ensure PTE modifications via dma_alloc_coherent are visible
ARM: 6359/1: ep93xx: move clock initialization earlier
Revert "[ARM] pxa: remove now unnecessary dma_needs_bounce()"
ARM: 6352/1: perf: fix event validation
ARM: 6344/1: Mark CPU_32v6K as depended on CPU_V7
ARM: 6343/1: wire up fanotify and prlimit64 syscalls on ARM
ARM: 6330/1: perf: reword comments relating to perf_event_do_pending
ARM: pxa168fb: fix section mismatch
ARM: pxa: Make id const in pwm_probe()
ARM: pxa: fix CI_HSYNC and CI_VSYNC MFP defines for pxa300
ARM: pxa: remove __init from cpufreq_driver->init()
ARM: imx: set cache line size to 64 bytes for i.MX5
mx5/clock: fix clear bit fields issue in _clk_ccgr_disable function
mxc/tzic: add base address when accessing TZIC registers
ARM: mach-shmobile: ap4evb: fix write protect for SDHI1
ARM: mach-shmobile: ap4evb: modify FSI2 ID
ARM: mach-shmobile: do not enable the PLLC2 clock on init
ARM: mach-shmobile: Clock framework comment fix
...
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When ia64 converted to using ticket locks, an inline implementation
of trylock/unlock in fsys.S was missed. This was not noticed because
in most circumstances it simply resulted in using the slow path because
the siglock was apparently not available (under old spinlock rules).
Problems occur when the ticket spinlock has value 0x0 (when first
initialised, or when it wraps around). At this point the fsys.S
code acquires the lock (changing the 0x0 to 0x1. If another process
attempts to get the lock at this point, it will change the value from
0x1 to 0x2 (using new ticket lock rules). Then the fsys.S code will
free the lock using old spinlock rules by writing 0x0 to it. From
here a variety of bad things can happen.
Signed-off-by: Tony Luck <[email protected]>
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Signed-off-by: Russell King <[email protected]>
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exceptions"
Partially revert e69edc7, which introduced automatic zreladdr
support. The change in the way the manual definition is defined
seems to be error and conflict prone. Go back to the original way
we were handling this for the time being, while keeping the automatic
zreladdr facility.
Acked-by: Uwe Kleine-König <[email protected]
Signed-off-by: Russell King <[email protected]>
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Neither the overcommit nor the reservation sysfs parameter were
actually working, remove them as they'll only get in the way.
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: paulus <[email protected]>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <[email protected]>
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Replace pmu::{enable,disable,start,stop,unthrottle} with
pmu::{add,del,start,stop}, all of which take a flags argument.
The new interface extends the capability to stop a counter while
keeping it scheduled on the PMU. We replace the throttled state with
the generic stopped state.
This also allows us to efficiently stop/start counters over certain
code paths (like IRQ handlers).
It also allows scheduling a counter without it starting, allowing for
a generic frozen state (useful for rotating stopped counters).
The stopped state is implemented in two different ways, depending on
how the architecture implemented the throttled state:
1) We disable the counter:
a) the pmu has per-counter enable bits, we flip that
b) we program a NOP event, preserving the counter state
2) We store the counter state and ignore all read/overflow events
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: paulus <[email protected]>
Cc: stephane eranian <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Cyrill Gorcunov <[email protected]>
Cc: Lin Ming <[email protected]>
Cc: Yanmin <[email protected]>
Cc: Deng-Cheng Zhu <[email protected]>
Cc: David Miller <[email protected]>
Cc: Michael Cree <[email protected]>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <[email protected]>
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Changes perf_disable() into perf_pmu_disable().
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: paulus <[email protected]>
Cc: stephane eranian <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Cyrill Gorcunov <[email protected]>
Cc: Lin Ming <[email protected]>
Cc: Yanmin <[email protected]>
Cc: Deng-Cheng Zhu <[email protected]>
Cc: David Miller <[email protected]>
Cc: Michael Cree <[email protected]>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <[email protected]>
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Since the current perf_disable() usage is only an optimization,
remove it for now. This eases the removal of the __weak
hw_perf_enable() interface.
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: paulus <[email protected]>
Cc: stephane eranian <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Cyrill Gorcunov <[email protected]>
Cc: Lin Ming <[email protected]>
Cc: Yanmin <[email protected]>
Cc: Deng-Cheng Zhu <[email protected]>
Cc: David Miller <[email protected]>
Cc: Michael Cree <[email protected]>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <[email protected]>
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Simple registration interface for struct pmu, this provides the
infrastructure for removing all the weak functions.
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: paulus <[email protected]>
Cc: stephane eranian <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Cyrill Gorcunov <[email protected]>
Cc: Lin Ming <[email protected]>
Cc: Yanmin <[email protected]>
Cc: Deng-Cheng Zhu <[email protected]>
Cc: David Miller <[email protected]>
Cc: Michael Cree <[email protected]>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <[email protected]>
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sed -ie 's/const struct pmu\>/struct pmu/g' `git grep -l "const struct pmu\>"`
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: paulus <[email protected]>
Cc: stephane eranian <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Paul Mundt <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Cyrill Gorcunov <[email protected]>
Cc: Lin Ming <[email protected]>
Cc: Yanmin <[email protected]>
Cc: Deng-Cheng Zhu <[email protected]>
Cc: David Miller <[email protected]>
Cc: Michael Cree <[email protected]>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <[email protected]>
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Merge reason: Pick up pending fixes before applying dependent new changes.
Signed-off-by: Ingo Molnar <[email protected]>
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Without this patch you will not be able to register the first block
because of the second association call on at91_add_device_tc().
Signed-off-by: Fabian Godehardt <[email protected]>
[[email protected]: change tcb1_clk to fake child clock of tcb0_clk]
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
Acked-by: Andrew Victor <[email protected]>
Signed-off-by: Nicolas Ferre <[email protected]>
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While registering clock allow to set parent clock other
than mck. It is useful for clocks than can be seen as
child clock of a peripheral.
Signed-off-by: Nicolas Ferre <[email protected]>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <[email protected]>
Acked-by: Andrew Victor <[email protected]>
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They were all bogus artifacts and completely unnecessary.
Signed-off-by: David S. Miller <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, mcheck: Avoid duplicate sysfs links/files for thresholding banks
io-mapping: Fix the address space annotations
x86: Fix the address space annotations of iomap_atomic_prot_pfn()
x86, mm: Fix CONFIG_VMSPLIT_1G and 2G_OPT trampoline
x86, hwmon: Fix unsafe smp_processor_id() in thermal_throttle_add_dev
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf, x86: Try to handle unknown nmis with an enabled PMU
perf, x86: Fix handle_irq return values
perf, x86: Fix accidentally ack'ing a second event on intel perf counter
oprofile, x86: fix init_sysfs() function stub
lockup_detector: Sync touch_*_watchdog back to old semantics
tracing: Fix a race in function profile
oprofile, x86: fix init_sysfs error handling
perf_events: Fix time tracking for events with pid != -1 and cpu != -1
perf: Initialize callchains roots's childen hits
oprofile: fix crash when accessing freed task structs
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Top of kvm_kpic_state structure should have the same memory layout as
kvm_pic_state since it is copied by memcpy.
Signed-off-by: Gleb Natapov <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>
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If there are no vcpus, found will be NULL. Check before doing anything with
it.
Signed-off-by: Avi Kivity <[email protected]>
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operand::val and operand::orig_val are 32-bit on i386, whereas cmpxchg8b
operands are 64-bit.
Fix by adding val64 and orig_val64 union members to struct operand, and
using them where needed.
Signed-off-by: Avi Kivity <[email protected]>
Signed-off-by: Marcelo Tosatti <[email protected]>
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Dave Hylands reports:
| We've observed a problem with dma_alloc_writecombine when the system
| is under heavy load (heavy bus traffic). We've managed to reduce the
| problem to the following snippet, which is run from a kthread in a
| continuous loop:
|
| void *virtAddr;
| dma_addr_t physAddr;
| unsigned int numBytes = 256;
|
| for (;;) {
| virtAddr = dma_alloc_writecombine(NULL,
| numBytes, &physAddr, GFP_KERNEL);
| if (virtAddr == NULL) {
| printk(KERN_ERR "Running out of memory\n");
| break;
| }
|
| /* access DMA memory allocated */
| tmp = virtAddr;
| *tmp = 0x77;
|
| /* free DMA memory */
| dma_free_writecombine(NULL,
| numBytes, virtAddr, physAddr);
|
| ...sleep here...
| }
|
| By itself, the code will run forever with no issues. However, as we
| increase our bus traffic (typically using DMA) then the *tmp = 0x77
| line will eventually cause a page fault. If we add a small delay (a
| few microseconds) before the *tmp = 0x77, then we don't see a page
| fault, even under heavy load.
A dsb() is required after modifying the PTE entries to ensure that they
will always be visible. Add this dsb().
Reported-by: Dave Hylands <[email protected]>
Tested-by: Dave Hylands <[email protected]>
Signed-off-by: Russell King <[email protected]>
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Commit 7cfe24947 ("ARM: AMBA: Add pclk support to AMBA bus
infrastructure") changed AMBA bus to handle the PCLK automatically.
However, in EP93xx clock initialization is arch_initcall which is done
later than AMBA device identification. This causes
amba_get_enable_pclk() to fail resulting device where UARTs are not
functional.
So change ep93xx_clock_init() to be postcore_initcall.
Signed-off-by: Mika Westerberg <[email protected]>
Acked-by: H Hartley Sweeten <[email protected]>
Signed-off-by: Russell King <[email protected]>
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This reverts commit 4fa5518, which causes a compilation regression for
IXP4xx platforms.
Reported-by: Richard Cochran <[email protected]>
Acked-by: Eric Miao <[email protected]>
Signed-off-by: Russell King <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: bus speed strings should be const
PCI hotplug: Fix build with CONFIG_ACPI unset
PCI: PCIe: Remove the port driver module exit routine
PCI: PCIe: Move PCIe PME code to the pcie directory
PCI: PCIe: Disable PCIe port services during port initialization
PCI: PCIe: Ask BIOS for control of all native services at once
ACPI/PCI: Negotiate _OSC control bits before requesting them
ACPI/PCI: Do not preserve _OSC control bits returned by a query
ACPI/PCI: Make acpi_pci_query_osc() return control bits
ACPI/PCI: Reorder checks in acpi_pci_osc_control_set()
PCI: PCIe: Introduce commad line switch for disabling port services
PCI: PCIe AER: Introduce pci_aer_available()
x86/PCI: only define pci_domain_nr if PCI and PCI_DOMAINS are set
PCI: provide stub pci_domain_nr function for !CONFIG_PCI configs
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* 'for-linus' of git://android.kernel.org/kernel/tegra:
[ARM] tegra: Add ZRELADDR default for ARCH_TEGRA
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git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6:
alpha: Fix printk format errors
alpha: convert perf_event to use local_t
Fix call to replaced SuperIO functions
alpha: remove homegrown L1_CACHE_ALIGN macro
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/pseries: Correct rtas_data_buf locking in dlpar code
powerpc/85xx: Add P1021 PCI IDs and quirks
arch/powerpc/sysdev/qe_lib/qe.c: Add of_node_put to avoid memory leak
arch/powerpc/platforms/83xx/mpc837x_mds.c: Add missing iounmap
fsl_rio: fix compile errors
powerpc/85xx: Fix compile issue with p1022_ds due to lmb rename to memblock
powerpc/85xx: Fix compilation of mpc85xx_mds.c
powerpc: Don't use kernel stack with translation off
powerpc/perf_event: Reduce latency of calling perf_event_do_pending
powerpc/kexec: Adds correct calling convention for kexec purgatory
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Recent changes to linker segments that hold per-cpu data broke linking
for m68knommu targets:
LD vmlinux
/usr/local/bin/m68k-uclinux-ld.real: error: no memory region specified for loadable section `.data..shared_aligned'
Add missing segments into the m68knommu linker script.
Signed-off-by: Greg Ungerer <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Fix missing consts in h8300's kernel_execve():
arch/h8300/kernel/sys_h8300.c: In function 'kernel_execve':
arch/h8300/kernel/sys_h8300.c:59: warning: initialization from incompatible pointer type
arch/h8300/kernel/sys_h8300.c:60: warning: initialization from incompatible pointer type
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Fix h8300's die() to take care of a number of problems:
CC arch/h8300/kernel/traps.o
In file included from arch/h8300/include/asm/bitops.h:10,
from include/linux/bitops.h:22,
from include/linux/kernel.h:17,
from include/linux/sched.h:54,
from arch/h8300/kernel/traps.c:18:
arch/h8300/include/asm/system.h:136: warning: 'struct pt_regs' declared inside parameter list
arch/h8300/include/asm/system.h:136: warning: its scope is only this definition or declaration, which is probably not what you want
arch/h8300/kernel/traps.c:100: error: conflicting types for 'die'
arch/h8300/include/asm/system.h:136: error: previous declaration of 'die' was here
make[2]: *** [arch/h8300/kernel/traps.o] Error 1
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Fix h8300's asm/atomic.h to store the IRQ flags in an unsigned long to deal
with warnings of the following type:
arch/h8300/include/asm/atomic.h: In function 'atomic_add_return':
arch/h8300/include/asm/atomic.h:22: warning: comparison of distinct pointer types lacks a cast
arch/h8300/include/asm/atomic.h:24: warning: comparison of distinct pointer types lacks a cast
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Reported-by: Dan Liang <[email protected]>
Signed-off-by: Nicolas Ferre <[email protected]>
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kobject_add_internal failed for threshold_bank2 with -EEXIST,
don't try to register things with the same name in the same
directory:
Pid: 1, comm: swapper Tainted: G W 2.6.31 #1
Call Trace:
[<ffffffff81161b07>] ? kobject_add_internal+0x156/0x180
[<ffffffff81161cc0>] ? kobject_add+0x66/0x6b
[<ffffffff81161793>] ? kobject_init+0x42/0x82
[<ffffffff81161cf9>] ? kobject_create_and_add+0x34/0x63
[<ffffffff81393963>] ? threshold_create_bank+0x14f/0x259
[<ffffffff8139310a>] ? mce_create_device+0x8d/0x1b8
[<ffffffff81646497>] ? threshold_init_device+0x3f/0x80
[<ffffffff81646458>] ? threshold_init_device+0x0/0x80
[<ffffffff81009050>] ? do_one_initcall+0x4f/0x143
[<ffffffff816413a0>] ? kernel_init+0x14c/0x1a2
[<ffffffff8100c8da>] ? child_rip+0xa/0x20
[<ffffffff81641254>] ? kernel_init+0x0/0x1a2
[<ffffffff8100c8d0>] ? child_rip+0x0/0x20
kobject_create_and_add: kobject_add error: -17
(Probably the for_each_cpu loop should be entirely removed.)
Signed-off-by: Andreas Herrmann <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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This patch fixes the sparse warnings when the return pointer of
iomap_atomic_prot_pfn() is used as an argument of iowrite32()
and friends.
Signed-off-by: Francisco Jerez <[email protected]>
LKML-Reference: <[email protected]>
Cc: Andrew Morton <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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