| Commit message (Collapse) | Author | Age |
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/irq.fairness' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen: events: Remove redundant clear of l2i at end of round-robin loop
xen: events: Make round-robin scan fairer by snapshotting each l2 word once only
xen: events: Clean up round-robin evtchn scan.
xen: events: Make last processed event channel a per-cpu variable.
xen: events: Process event channels notifications in round-robin order.
* 'stable/irq.ween_of_nr_irqs' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen: events: Fix compile error if CONFIG_SMP is not defined.
xen: events: correct locking in xen_irq_from_pirq
xen: events: propagate irq allocation failure instead of panicking
xen: events: do not workaround too-small nr_irqs
xen: events: remove use of nr_irqs as upper bound on number of pirqs
xen: events: dynamically allocate irq info structures
xen: events: maintain a list of Xen interrupts
xen: events: push setup of irq<->{evtchn,ipi,virq,pirq} maps into irq_info init functions
xen: events: turn irq_info constructors into initialiser functions
xen: events: use per-cpu variable for cpu_evtchn_mask
xen: events: refactor GSI pirq bindings functions
xen: events: rename restore_cpu_pirqs -> restore_pirqs
xen: events: remove unused public functions
xen: events: fix xen_map_pirq_gsi error return
xen: events: simplify comment
xen: events: separate two unrelated halves of if condition
Fix up trivial conflicts in drivers/xen/events.c
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Following the example set by xen_allocate_pirq_msi and
xen_bind_pirq_msi_to_irq:
xen_allocate_pirq becomes xen_allocate_pirq_gsi and now only allocates
a pirq number and does not bind it.
xen_map_pirq_gsi becomes xen_bind_pirq_gsi_to_irq and binds an
existing pirq.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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'stable/balloon' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/hvc-console' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/hvc: Disable probe_irq_on/off from poking the hvc-console IRQ line.
* 'stable/gntalloc.v6' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen: gntdev: fix build warning
xen/p2m/m2p/gnttab: do not add failed grant maps to m2p override
xen-gntdev: Add cast to pointer
xen-gntdev: Fix incorrect use of zero handle
xen: change xen/[gntdev/gntalloc] to default m
xen-gntdev: prevent using UNMAP_NOTIFY_CLEAR_BYTE on read-only mappings
xen-gntdev: Avoid double-mapping memory
xen-gntdev: Avoid unmapping ranges twice
xen-gntdev: Use map->vma for checking map validity
xen-gntdev: Fix unmap notify on PV domains
xen-gntdev: Fix memory leak when mmap fails
xen/gntalloc,gntdev: Add unmap notify ioctl
xen-gntalloc: Userspace grant allocation driver
xen-gntdev: Support mapping in HVM domains
xen-gntdev: Add reference counting to maps
xen-gntdev: Use find_vma rather than iterating our vma list manually
xen-gntdev: Change page limit to be global instead of per-open
* 'stable/balloon' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: (24 commits)
xen-gntdev: Use ballooned pages for grant mappings
xen-balloon: Add interface to retrieve ballooned pages
xen-balloon: Move core balloon functionality out of module
xen/balloon: Remove pr_info's and don't alter retry_count
xen/balloon: Protect against CPU exhaust by event/x process
xen/balloon: Migration from mod_timer() to schedule_delayed_work()
xen/balloon: Removal of driver_pages
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Removal of driver_pages (I do not have seen any references to it).
Signed-off-by: Daniel Kiper <dkiper@net-space.pl>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] pcc-cpufreq: remove duplicate statements
[CPUFREQ] Remove the pm_message_t argument from driver suspend
[CPUFREQ] Remove unneeded locks
[CPUFREQ] Remove old, deprecated per cpu ondemand/conservative sysfs files
[CPUFREQ] Remove deprecated sysfs file sampling_rate_max
[CPUFREQ] powernow-k8: The table index is not worth displaying
[CPUFREQ] calculate delay after dbs_check_cpu
[CPUFREQ] Add documentation for sampling_down_factor
[CPUFREQ] drivers/cpufreq: Remove unnecessary semicolons
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Remove a couple of assigment statements that appear twice.
Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com>
Signed-off-by: Dave Jones <davej@redhat.com>
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and it also is misleading due to another message above
which makes the index look like it is the CPU.
https://bugzilla.kernel.org/show_bug.cgi?id=24562
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Dave Jones <davej@redhat.com>
CC: cpufreq@vger.kernel.org
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (38 commits)
amd64_edac: Fix decode_syndrome types
amd64_edac: Fix DCT argument type
amd64_edac: Fix ranges signedness
amd64_edac: Drop local variable
amd64_edac: Fix PCI config addressing types
amd64_edac: Fix DRAM base macros
amd64_edac: Fix node id signedness
amd64_edac: Drop redundant declarations
amd64_edac: Enable driver on F15h
amd64_edac: Adjust ECC symbol size to F15h
amd64_edac: Simplify scrubrate setting
PCI: Rename CPU PCI id define
amd64_edac: Improve DRAM address mapping
amd64_edac: Sanitize ->read_dram_ctl_register
amd64_edac: Adjust sys_addr to chip select conversion routine to F15h
amd64_edac: Beef up early exit reporting
amd64_edac: Revamp online spare handling
amd64_edac: Fix channel interleave removal
amd64_edac: Correct node interleaving removal
amd64_edac: Add support for interleaved region swapping
...
Fix up trivial conflict in include/linux/pci_ids.h due to
AMD_15H_NB_MISC being renamed as AMD_15H_NB_F3 next to the new
AMD_15H_NB_LINK entry.
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With increasing number of PCI function ids, add the PCI function id
in the define name instead of its symbolic name in the BKDG for more
clarity.
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (50 commits)
printk: do not mangle valid userspace syslog prefixes
efivars: Add Documentation
efivars: Expose efivars functionality to external drivers.
efivars: Parameterize operations.
efivars: Split out variable registration
efivars: parameterize efivars
efivars: Make efivars bin_attributes dynamic
efivars: move efivars globals into struct efivars
drivers:misc: ti-st: fix debugging code
kref: Fix typo in kref documentation
UIO: add PRUSS UIO driver support
Fix spelling mistakes in Documentation/zh_CN/SubmittingPatches
firmware: Fix unaligned memory accesses in dmi-sysfs
firmware: Add documentation for /sys/firmware/dmi
firmware: Expose DMI type 15 System Event Log
firmware: Break out system_event_log in dmi-sysfs
firmware: Basic dmi-sysfs support
firmware: Add DMI entry types to the headers
Driver core: convert platform_{get,set}_drvdata to static inline functions
Translate linux-2.6/Documentation/magic-number.txt into Chinese
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Define a version of memory_block_size_bytes for x86_64 when CONFIG_X86_UV is
set.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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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, AMD: Set ARAT feature on AMD processors
x86, quirk: Fix SB600 revision check
x86: stop_machine_text_poke() should issue sync_core()
x86, amd-nb: Misc cleanliness fixes
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Merge reason: This is one followup commit that was not in x86/mm - merge it via the urgent path
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Make functions used strictly in bool context return bool. Also,
fixup used types and comments, and make a local function static,
while at it.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: Borislav Petkov <bp@amd64.org>
LKML-Reference: <20110303115932.GA8603@aftab>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Support for Always Running APIC timer (ARAT) was introduced in
commit db954b5898dd3ef3ef93f4144158ea8f97deb058. This feature
allows us to avoid switching timers from LAPIC to something else
(e.g. HPET) and go into timer broadcasts when entering deep
C-states.
AMD processors don't provide a CPUID bit for that feature but
they also keep APIC timers running in deep C-states (except for
cases when the processor is affected by erratum 400). Therefore
we should set ARAT feature bit on AMD CPUs.
Tested-by: Borislav Petkov <borislav.petkov@amd.com>
Acked-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Acked-by: Mark Langsdorf <mark.langsdorf@amd.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@amd.com>
LKML-Reference: <1300205624-4813-1-git-send-email-ostr@amd64.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Commit 7f74f8f28a2bd9db9404f7d364e2097a0c42cc12
(x86 quirk: Fix polarity for IRQ0 pin2 override on SB800
systems) introduced a regression. It removed some SB600 specific
code to determine the revision ID without adapting a
corresponding revision ID check for SB600.
See this mail thread:
http://marc.info/?l=linux-kernel&m=129980296006380&w=2
This patch adapts the corresponding check to cover all SB600
revisions.
Tested-by: Wang Lei <f3d27b@gmail.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: stable@kernel.org # 38.x, 37.x, 32.x
LKML-Reference: <20110315143137.GD29499@alberich.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Intel Archiecture Software Developer's Manual section 7.1.3 specifies that a
core serializing instruction such as "cpuid" should be executed on _each_ core
before the new instruction is made visible.
Failure to do so can lead to unspecified behavior (Intel XMC erratas include
General Protection Fault in the list), so we should avoid this at all cost.
This problem can affect modified code executed by interrupt handlers after
interrupt are re-enabled at the end of stop_machine, because no core serializing
instruction is executed between the code modification and the moment interrupts
are reenabled.
Because stop_machine_text_poke performs the text modification from the first CPU
decrementing stop_machine_first, modified code executed in thread context is
also affected by this problem. To explain why, we have to split the CPUs in two
categories: the CPU that initiates the text modification (calls text_poke_smp)
and all the others. The scheduler, executed on all other CPUs after
stop_machine, issues an "iret" core serializing instruction, and therefore
handles core serialization for all these CPUs. However, the text modification
initiator can continue its execution on the same thread and access the modified
text without any scheduler call. Given that the CPU that initiates the code
modification is not guaranteed to be the one actually performing the code
modification, it falls into the XMC errata.
Q: Isn't this executed from an IPI handler, which will return with IRET (a
serializing instruction) anyway?
A: No, now stop_machine uses per-cpu workqueue, so that handler will be
executed from worker threads. There is no iret anymore.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
LKML-Reference: <20110303160137.GB1590@Krystal>
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: <stable@kernel.org>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Fix binutils-2.21 symbol related build failures
x86-64, trampoline: Remove unused variable
x86, reboot: Fix the use of passed arguments in 32-bit BIOS reboot
x86, reboot: Move the real-mode reboot code to an assembly file
x86: Make the GDT_ENTRY() macro in <asm/segment.h> safe for assembly
x86, trampoline: Use the unified trampoline setup for ACPI wakeup
x86, trampoline: Common infrastructure for low memory trampolines
Fix up trivial conflicts in arch/x86/kernel/Makefile
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New binutils version 2.21.0.20110302-1 started checking that the symbol
parameter to the .size directive matches the entry name's
symbol parameter, unearthing two mismatches:
AS arch/x86/kernel/acpi/wakeup_rm.o
arch/x86/kernel/acpi/wakeup_rm.S: Assembler messages:
arch/x86/kernel/acpi/wakeup_rm.S:12: Error: .size expression with symbol `wakeup_code_start' does not evaluate to a constant
arch/x86/kernel/entry_32.S: Assembler messages:
arch/x86/kernel/entry_32.S:1421: Error: .size expression with
symbol `apf_page_fault' does not evaluate to a constant
The problem was discovered while using Debian's binutils
(2.21.0.20110302-1) and experimenting with binutils from
upstream.
Thanks Alexander and H.J. for the vital help.
Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Alexander van Heukelum <heukelum@fastmail.fm>
Cc: H.J. Lu <hjl.tools@gmail.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
LKML-Reference: <1299620364-21644-1-git-send-email-sedat.dilek@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Removed unused variable left over from development.
Reported-by: Brian Gerst <brgerst@gmail.com>
LKML-Reference: <AANLkTik6UJ680mWJcu_W+jerLcqPjwjvaXyxB1jAMaG0@mail.gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Matthieu Castet <castet.matthieu@free.fr>
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The initial version of this patch had %eax being a segment and %ecx
being the mode. I had changed the interfaces, but not the actual
implementation!
Reported-by: Brian Gerst <brgerst@gmail.com>
LKML-Reference: <AANLkTikxqk=HEw9R-Du=v-1ti1HDGAY9vaNUep2XARaz@mail.gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Matthieu Castet <castet.matthieu@free.fr>
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Move the real-mode reboot code out to an assembly file (reboot_32.S)
which is allocated using the common lowmem trampoline allocator.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
LKML-Reference: <4D5DFBE4.7090104@intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Matthieu Castet <castet.matthieu@free.fr>
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Make the GDT_ENTRY() macro in <asm/segment.h> safe for use in
assembly code by guarding the ULL suffixes with _AC() macros.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
LKML-Reference: <4D5DFBE4.7090104@intel.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Matthieu Castet <castet.matthieu@free.fr>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
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Use the unified trampoline allocation setup to allocate and install
the ACPI wakeup code in low memory.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
LKML-Reference: <4D5DFBE4.7090104@intel.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Matthieu Castet <castet.matthieu@free.fr>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
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Common infrastructure for low memory trampolines. This code installs
the trampolines permanently in low memory very early. It also permits
multiple pieces of code to be used for this purpose.
This code also introduces a standard infrastructure for computing
symbol addresses in the trampoline code.
The only change to the actual SMP trampolines themselves is that the
64-bit trampoline has been made reusable -- the previous version would
overwrite the code with a status variable; this moves the status
variable to a separate location.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
LKML-Reference: <4D5DFBE4.7090104@intel.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Matthieu Castet <castet.matthieu@free.fr>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: (21 commits)
PM / Hibernate: Reduce autotuned default image size
PM / Core: Introduce struct syscore_ops for core subsystems PM
PM QoS: Make pm_qos settings readable
PM / OPP: opp_find_freq_exact() documentation fix
PM: Documentation/power/states.txt: fix repetition
PM: Make system-wide PM and runtime PM treat subsystems consistently
PM: Simplify kernel/power/Kconfig
PM: Add support for device power domains
PM: Drop pm_flags that is not necessary
PM: Allow pm_runtime_suspend() to succeed during system suspend
PM: Clean up PM_TRACE dependencies and drop unnecessary Kconfig option
PM: Remove CONFIG_PM_OPS
PM: Reorder power management Kconfig options
PM: Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME)
PM / ACPI: Remove references to pm_flags from bus.c
PM: Do not create wakeup sysfs files for devices that cannot wake up
USB / Hub: Do not call device_set_wakeup_capable() under spinlock
PM: Use appropriate printk() priority level in trace.c
PM / Wakeup: Don't update events_check_enabled in pm_get_wakeup_count()
PM / Wakeup: Make pm_save_wakeup_count() work as documented
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The variable pm_flags is used to prevent APM from being enabled
along with ACPI, which would lead to problems. However, acpi_init()
is always called before apm_init() and after acpi_init() has
returned, it is known whether or not ACPI will be used. Namely, if
acpi_disabled is not set after acpi_init() has returned, this means
that ACPI is enabled. Thus, it is sufficient to check acpi_disabled
in apm_init() to prevent APM from being enabled in parallel with
ACPI.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Len Brown <len.brown@intel.com>
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From the users' point of view CONFIG_PM is really only used for
making it possible to set CONFIG_SUSPEND, CONFIG_HIBERNATION,
CONFIG_PM_RUNTIME and (surprisingly enough) CONFIG_XEN_SAVE_RESTORE
(CONFIG_PM_OPP also depends on CONFIG_PM, but quite artificially).
However, both CONFIG_SUSPEND and CONFIG_HIBERNATION require platform
support (independent of CONFIG_PM) and it is not quite obvious that
CONFIG_PM has to be set for CONFIG_XEN_SAVE_RESTORE to be available.
Thus, from the users' point of view, it would be more logical to
automatically select CONFIG_PM if any of the above options depending
on it are set.
Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME),
which will cause it to be selected when any of CONFIG_SUSPEND,
CONFIG_HIBERNATION, CONFIG_PM_RUNTIME, CONFIG_XEN_SAVE_RESTORE is
set and will clarify its meaning.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (33 commits)
AppArmor: kill unused macros in lsm.c
AppArmor: cleanup generated files correctly
KEYS: Add an iovec version of KEYCTL_INSTANTIATE
KEYS: Add a new keyctl op to reject a key with a specified error code
KEYS: Add a key type op to permit the key description to be vetted
KEYS: Add an RCU payload dereference macro
AppArmor: Cleanup make file to remove cruft and make it easier to read
SELinux: implement the new sb_remount LSM hook
LSM: Pass -o remount options to the LSM
SELinux: Compute SID for the newly created socket
SELinux: Socket retains creator role and MLS attribute
SELinux: Auto-generate security_is_socket_class
TOMOYO: Fix memory leak upon file open.
Revert "selinux: simplify ioctl checking"
selinux: drop unused packet flow permissions
selinux: Fix packet forwarding checks on postrouting
selinux: Fix wrong checks for selinux_policycap_netpeer
selinux: Fix check for xfrm selinux context algorithm
ima: remove unnecessary call to ima_must_measure
IMA: remove IMA imbalance checking
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Add a keyctl op (KEYCTL_INSTANTIATE_IOV) that is like KEYCTL_INSTANTIATE, but
takes an iovec array and concatenates the data in-kernel into one buffer.
Since the KEYCTL_INSTANTIATE copies the data anyway, this isn't too much of a
problem.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: tcrypt - do not attempt to write to readonly variable
random: update interface comments to reflect reality
crypto: picoxcell - add support for the picoxcell crypto engines
crypto: sha1 - Add test vector to test partial block processing
hwrng: omap - Convert release_resource to release_region/release_mem_region
crypto: aesni-intel - Fix remaining leak in rfc4106_set_hash_key
crypto: omap-sham - don't treat NULL clk as an error
crypto: omap-aes - don't treat NULL clk as an error
crypto: testmgr - mark ghash as fips_allowed
crypto: testmgr - mark xts(aes) as fips_allowed
crypto: skcipher - remove redundant NULL check
hwrng: pixocell - add support for picoxcell TRNG
crypto: aesni-intel - Don't leak memory in rfc4106_set_hash_subkey
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Fix up previous patch that failed to properly fix mem leak in
rfc4106_set_hash_subkey(). This add-on patch; fixes the leak. moves
kfree() out of the error path, returns -ENOMEM rather than -EINVAL when
ablkcipher_request_alloc() fails.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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There's a small memory leak in
arch/x86/crypto/aesni-intel_glue.c::rfc4106_set_hash_subkey(). If the call
to kmalloc() fails and returns NULL then the memory allocated previously
by ablkcipher_request_alloc() is not freed when we leave the function.
I could have just added a call to ablkcipher_request_free() before we
return -ENOMEM, but that started to look too much like the code we
already had at the end of the function, so I chose instead to rework the
code a bit so that there are now a few labels at the end that we goto when
various allocations fail, so we don't have to repeat the same blocks of
code (this also reduces the object code size slightly).
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu, x86: Add arch-specific this_cpu_cmpxchg_double() support
percpu: Generic support for this_cpu_cmpxchg_double()
alpha: use L1_CACHE_BYTES for cacheline size in the linker script
percpu: align percpu readmostly subsection to cacheline
Fix up trivial conflict in arch/x86/kernel/vmlinux.lds.S due to the
percpu alignment having changed ("x86: Reduce back the alignment of the
per-CPU data section")
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Support this_cpu_cmpxchg_double() using the cmpxchg16b and cmpxchg8b
instructions.
-tj: s/percpu_cmpxchg16b/percpu_cmpxchg16b_double/ for consistency and
other cosmetic changes.
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Currently percpu readmostly subsection may share cachelines with other
percpu subsections which may result in unnecessary cacheline bounce
and performance degradation.
This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR()
linker macros, makes each arch linker scripts specify its cacheline
size and use it to align percpu subsections.
This is based on Shaohua's x86 only patch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Shaohua Li <shaohua.li@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits)
x86: Clean up apic.c and apic.h
x86: Remove superflous goal definition of tsc_sync
x86: dt: Correct local apic documentation in device tree bindings
x86: dt: Cleanup local apic setup
x86: dt: Fix OLPC=y/INTEL_CE=n build
rtc: cmos: Add OF bindings
x86: ce4100: Use OF to setup devices
x86: ioapic: Add OF bindings for IO_APIC
x86: dtb: Add generic bus probe
x86: dtb: Add support for PCI devices backed by dtb nodes
x86: dtb: Add device tree support for HPET
x86: dtb: Add early parsing of IO_APIC
x86: dtb: Add irq domain abstraction
x86: dtb: Add a device tree for CE4100
x86: Add device tree support
x86: e820: Remove conditional early mapping in parse_e820_ext
x86: OLPC: Make OLPC=n build again
x86: OLPC: Remove extra OLPC_OPENFIRMWARE_DT indirection
x86: OLPC: Cleanup config maze completely
x86: OLPC: Hide OLPC_OPENFIRMWARE config switch
...
Fix up conflicts in arch/x86/platform/ce4100/ce4100.c
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This patch moves some functions and variables into init
sections, makes a function static and removes some lines of
cruft.
Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
LKML-Reference: <1299826956-8607-2-git-send-email-henne@nachtwindheim.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The extra tsc_sync.o goal definition is superflous.
CONFIG_X86_64_SMP depends on CONFIG_SMP
and tsc_sync.o is already in the definition of CONFIG_SMP.
Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
LKML-Reference: <1299826956-8607-1-git-send-email-henne@nachtwindheim.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Up to now we force enable the local apic in the devicetree setup
uncoditionally and set smp_found_config unconditionally to 1 when a
devicetree blob is available. This breaks, when local apic is disabled
in the Kconfig.
Make it consistent by initializing device tree explicitely before
smp_get_config() so a non lapic configuration could be used as well.
To be functional that would require to implement PIT as an interrupt
host, but the only user of this code until now is ce4100 which
requires apics to be available. So we leave this up to those who need
it.
Tested-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Both OLPC and CE4100 activate CONFIG_OF. OLPC uses PROMTREE while CE
uses FLATTREE. Compiling for OLPC only breaks due to missing flat tree
functions and variables.
Use proper wrappers and provide an empty x86_flattree_get_config()
inline so OF=y FLATTREE=n builds and works.
[ tglx: Make it work with HPET_TIMER=n and make a function static ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This allows to load the OF driver based informations from the device
tree. Systems without BIOS may need to perform some initialization.
PowerPC creates a PNP device from the OF information and performs this
kind of initialization in their private PCI quirk. This looks more
generic.
This patch also avoids registering the platform RTC driver on X86 if
we have a device tree blob. Otherwise we would setup the device based
on the hardcoded information in arch/x86 rather than the device tree
based one.
[ tglx: Changed "int of_have_populated_dt()" to bool as recommended by
Grant ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
Cc: rtc-linux@googlegroups.com
Cc: Alessandro Zummo <a.zummo@towertech.it>
LKML-Reference: <1298405266-1624-12-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Use device tree information to setup IO_APIC configuration, interrupt
routing, HPET and everything else which cannot be enumerated by other
means.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
LKML-Reference: <1298405266-1624-11-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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ioapic_xlate provides a translation from the information in device tree
to ioapic related informations. This includes
- obtaining hw irq which is the vector number "=> pin number + gsi"
- obtaining type (level/edge/..)
- programming this information into ioapic
ioapic_add_ofnode adds an irq_domain based on informations from the device
tree. This information (irq_domain) is required in order to map a device to
its proper interrupt controller.
[ tglx: Adapted to the io_apic changes, which let us move that whole code
to devicetree.c ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
LKML-Reference: <1298405266-1624-10-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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For now we probe these busses and we change this to board dependent
probes once we have to.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
LKML-Reference: <1298405266-1624-9-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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x86_of_pci_init() does two things:
- it provides a generic irq enable and disable function. enable queries
the device tree for the interrupt information, calls ->xlate on the
irq host and updates the pci->irq information for the device.
- it walks through PCI bus(es) in the device tree and adds its children
(device) nodes to appropriate pci_dev nodes in kernel. So the dtb
node information is available at probe time of the PCI device.
Adding a PCI bus based on the information in the device tree is
currently not supported. Right now direct access via ioports is used.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
LKML-Reference: <1298405266-1624-8-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Set hpet_address based on information provied form DTB
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Dirk Brandewie <dirk.brandewie@gmail.com>
LKML-Reference: <1298405266-1624-7-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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APIC and IO_APIC have to be added to the system early because
native_init_IRQ() requires it.
In order to obtain the address of the ioapic the device tree has to be
unflattened so of_address_to_resource() works.
The device tree is relocated to ensure it is always covered by the
kernel mapping. That way the boot loader does not have to make
any assumptions about kernel's memory layout.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Dirk Brandewie <dirk.brandewie@gmail.com>
LKML-Reference: <1298405266-1624-6-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The here introduced irq_domain abstraction represents a generic irq
controller. It is a subset of powerpc's irq_host which is going to be
renamed to irq_domain and then become generic. This implementation will
be removed once it is generic.
The xlate callback is resposible to parse irq informations like irq type
and number and returns the hardware irq number which is reported by the
hardware as active.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
LKML-Reference: <1298405266-1624-5-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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