| Commit message (Collapse) | Author | Age |
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In case of discrete (pretty old) apics we may have cpu_has_apic bit
not set but have to check if smp_found_config (MP spec) is there
and apic was not disabled.
Also don't forget to print apic/io-apic for such case as well.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090915071230.GA10604@lenovo>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Remove duplicated #include in:
arch/x86/kernel/cpu/common.c
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Perhaps this is a more readable/standard form.
Signed-off-by: Joe Perches <joe@perches.com>
LKML-Reference: <1252945687.3937.14.camel@Joe-Laptop.home>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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After close looking, commit 8126dec3 will break:
1. some cpu feature in early stage too, like cpu_has_x2apic
2. will break built-in-command line
3. will break other memmap= and mem=
4. early_dbgp and early_console that will use early_ioremap to access mmio (?)
So revert it.
Reported-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Cc: Andrew Morton <akpm@linux-foundation.org>,
LKML-Reference: <4AB51DFD.2000904@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Fix following compile warning:
arch/x86/kernel/cpu/mcheck/mce_amd.c: In function 'threshold_create_bank':
arch/x86/kernel/cpu/mcheck/mce_amd.c:492: warning: unused variable 'c'
which shows up when kernel is compiled with CONFIG_SMP=n.
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
LKML-Reference: <20090915151727.GB21670@alberich.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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On Intel platforms, we can use logical flat mode if there are <= 8
logical cpu's (irrespective of physical apic id values). This will
enable simplified and efficient IPI and device interrupt routing on
such platforms.
Fix the relevant comments while we are at it.
We can clean up default_setup_apic_routing() by using apic->probe()
but that is a different item.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: "yinghai@kernel.org" <yinghai@kernel.org>
LKML-Reference: <1253327399.3948.747.camel@sbs-t61.sc.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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UV depends on the MMRHI space being identity mapped. The patch:
x86: Make 64-bit efi_ioremap use ioremap on MMIO regions
changed this to make efi regions at a different address using
ioremap. Add the identity mapping to uv_system_init.
( Note this code was previously present but was deleted when BIOS
added the ranges to the EFI map - previous efi code identify
mapped the ranges. )
Signed-off-by: Jack Steiner <steiner@sgi.com>
LKML-Reference: <20090909154339.GA7946@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Add volatile-semantics to the SGI UV read/write macros that are
used to access chipset memory mapped registers. No direct
references to volatile are made. Instead the readq/writeq macros
are used.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: linux-mm@kvack.org
Cc: dwalker@fifo99.com
Cc: cfriesen@nortel.com
LKML-Reference: <20090910143149.GA14273@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The UV BIOS has changed the way interrupt remapping is being done.
This affects the id used for sending IPIs. The upper id bits no
longer need to be masked off.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: <stable@kernel.org>
LKML-Reference: <20090909154104.GA25083@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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This was done using Coccinelle's BUG_ON semantic patch.
Signed-off-by: Daniel Walker <dwalker@fifo99.com>
Cc: Julia Lawall <julia@diku.dk>
LKML-Reference: <1252777220-30796-1-git-send-email-dwalker@fifo99.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Caught by Linus.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
[ fixed up context conflict manually. ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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* git://git.kernel.org/pub/scm/linux/kernel/git/jaswinder/linux-2.6:
includecheck fix: x86, cpu/common.c
includecheck fix: kernel/trace, ring_buffer.c
includecheck fix: include/linux, ftrace.h
includecheck fix: include/linux, page_cgroup.h
includecheck fix: include/linux, aio.h
includecheck fix: include/drm, drm_memory.h
includecheck fix: include/acpi, acpi_bus.h
includecheck fix: drivers/xen, evtchn.c
includecheck fix: drivers/video, vgacon.c
includecheck fix: drivers/scsi, ibmvscsi.c
includecheck fix: drivers/scsi, libfcoe.c
includecheck fix: x86, shadow.c
includecheck fix: x86, traps.c
includecheck fix: um, helper.c
includecheck fix: s390, sys_s390.c
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fix the following 'make includecheck' warning:
arch/x86/kernel/cpu/common.c: linux/smp.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <1252087783.6385.10.camel@ht.satnam>
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fix the following 'make includecheck' warning:
arch/x86/mm/kmemcheck/shadow.c: linux/module.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1247065179.4382.51.camel@ht.satnam>
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fix the following 'make includecheck' warning:
arch/x86/kernel/traps.c: asm/traps.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1247065094.4382.49.camel@ht.satnam>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
Driver-Core: extend devnode callbacks to provide permissions
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This allows subsytems to provide devtmpfs with non-default permissions
for the device node. Instead of the default mode of 0600, null, zero,
random, urandom, full, tty, ptmx now have a mode of 0666, which allows
non-privileged processes to access standard device nodes in case no
other userspace process applies the expected permissions.
This also fixes a wrong assignment in pktcdvd and a checkpatch.pl complain.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
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
* 'perfcounters-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (58 commits)
perf_counter: Fix perf_copy_attr() pointer arithmetic
perf utils: Use a define for the maximum length of a trace event
perf: Add timechart help text and add timechart to "perf help"
tracing, x86, cpuidle: Move the end point of a C state in the power tracer
perf utils: Be consistent about minimum text size in the svghelper
perf timechart: Add "perf timechart record"
perf: Add the timechart tool
perf: Add a SVG helper library file
tracing, perf: Convert the power tracer into an event tracer
perf: Add a sample_event type to the event_union
perf: Allow perf utilities to have "callback" options without arguments
perf: Store trace event name/id pairs in perf.data
perf: Add a timestamp to fork events
sched_clock: Make it NMI safe
perf_counter: Fix up swcounter throttling
x86, perf_counter, bts: Optimize BTS overflow handling
perf sched: Add --input=file option to builtin-sched.c
perf trace: Sample timestamp and cpu when using record flag
perf tools: Increase MAX_EVENT_LENGTH
perf tools: Fix memory leak in read_ftrace_printk()
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The "end of a C state" trace point currently happens before
the code runs that corrects the TSC for having stopped during idle.
The result of this is that the timestamp of the end-of-C-state event
is garbage on cpus where the TSC stops during idle.
This patch moves the end point of the C state to after the timekeeping
engine of the kernel has been corrected.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Len Brown <len.brown@intel.com>
Cc: fweisbec@gmail.com
Cc: peterz@infradead.org
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <20090919133533.139c2a46@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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This patch converts the existing power tracer into an event tracer,
so that power events (C states and frequency changes) can be
tracked via "perf".
This also removes the perl script that was used to demo the tracer;
its functionality is being replaced entirely with timechart.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090912130542.6d314860@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Merge reason: Bring in tracing changes we depend on.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Draining the BTS buffer on a buffer overflow interrupt takes too
long resulting in a kernel lockup when tracing the kernel.
Restructure perf_counter sampling into sample creation and sample
output.
Prepare a single reference sample for BTS sampling and update the
from and to address fields when draining the BTS buffer. Drain the
entire BTS buffer between a single perf_output_begin() /
perf_output_end() pair.
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090915130023.A16204@sedona.ch.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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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: (38 commits)
x86: Move get/set_wallclock to x86_platform_ops
x86: platform: Fix section annotations
x86: apic namespace cleanup
x86: Distangle ioapic and i8259
x86: Add Moorestown early detection
x86: Add hardware_subarch ID for Moorestown
x86: Add early platform detection
x86: Move tsc_init to late_time_init
x86: Move tsc_calibration to x86_init_ops
x86: Replace the now identical time_32/64.c by time.c
x86: time_32/64.c unify profile_pc
x86: Move calibrate_cpu to tsc.c
x86: Make timer setup and global variables the same in time_32/64.c
x86: Remove mca bus ifdef from timer interrupt
x86: Simplify timer_ack magic in time_32.c
x86: Prepare unification of time_32/64.c
x86: Remove do_timer hook
x86: Add timer_init to x86_init_ops
x86: Move percpu clockevents setup to x86_init_ops
x86: Move xen_post_allocator_init into xen_pagetable_setup_done
...
Fix up conflicts in arch/x86/include/asm/io_apic.h
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get/set_wallclock() have already a set of platform dependent
implementations (default, EFI, paravirt). MRST will add another
variant.
Moving them to platform ops simplifies the existing code and minimizes
the effort to integrate new variants.
Signed-off-by: Feng Tang <feng.tang@intel.com>
LKML-Reference: <new-submission>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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init_IRQ() and x86_late_time_init() are missing __init annotations.
The x86 platform ops variables are annotated, but the annotation needs
to be put between the variable name and the "=" of the initializer.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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boot_cpu_physical_apicid is a global variable and used as function
argument as well. Rename the function arguments to avoid confusion.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The proposed Moorestown support patches use an extra feature flag
mechanism to make the ioapic work w/o an i8259. There is a much
simpler solution.
Most i8259 specific functions are already called dependend on the irq
number less than NR_IRQS_LEGACY. Replacing that constant by a
read_mostly variable which can be set to 0 by the platform setup code
allows us to achieve the same without any special feature flags.
That trivial change allows us to proceed with MRST w/o doing a full
blown overhaul of the ioapic code which would delay MRST unduly.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Moorestown MID devices need to be detected early in the boot process
to setup and do not call x86_default_early_setup as there is no EBDA
region to reserve.
[ Copied the minimal code from Jacobs latest MRST series ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jacob Pan <jacob.jun.pan@intel.com>
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x86 bootprotocol 2.07 has introduced hardware_subarch ID in the boot
parameters provided by FW. We use it to identify Moorestown platforms.
[ tglx: Cleanup and paravirt fix ]
Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Platforms like Moorestown require early setup and want to avoid the
call to reserve_ebda_region. The x86_init override is too late when
the MRST detection happens in setup_arch. Move the default i386
x86_init overrides and the call to reserve_ebda_region into a separate
function which is called as the default of a switch case depending on
the hardware_subarch id in boot params. This allows us to add a case
for MRST and let MRST have its own early setup function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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We do not need the TSC before late_time_init. Move the tsc_init to the
late time init code so we can also utilize HPET for calibration (which
we claimed to do but never did except in some older kernel
version). This also helps Moorestown to calibrate the TSC with the
AHBT timer which needs to be initialized in late_time_init like HPET.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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TSC calibration is modified by the vmware hypervisor and paravirt by
separate means. Moorestown wants to add its own calibration routine as
well. So make calibrate_tsc a proper x86_init_ops function and
override it by paravirt or by the early setup of the vmware
hypervisor.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Remove the redundant copy.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The code is identical except for the formatting and a useless
#ifdef. Make it the same.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Move the code where it's only user is. Also we need to look whether
this hardwired hackery might interfere with perfcounters.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The timer and timer irq setup code is identical in 32 and 64 bit. Make
it the same formatting as well. Also add the global variables under
the necessary ifdefs to both files.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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MCA_bus is constant 0 when CONFIG_MCA=n. So the compiler removes that
code w/o needing an extra #ifdef
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Let the compiler optimize the timer_ack magic away in the 32bit timer
interrupt and put the same code into time_64.c. It's optimized out for
CONFIG_X86_IO_APIC on 32bit and for 64bit because timer_ack is const 0
in both cases.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Unify the top comment and the includes.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This is a left over of the old x86 sub arch support. Remove it and
open code it like we do in time_64.c
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The timer init code is convoluted with several quirks and the paravirt
timer chooser. Figuring out which code path is actually taken is not
for the faint hearted.
Move the numaq TSC quirk to tsc_pre_init x86_init_ops function and
replace the paravirt time chooser and the remaining x86 quirk with a
simple x86_init_ops function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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paravirt overrides the setup of the default apic timers as per cpu
timers. Moorestown needs to override that as well.
Move it to x86_init_ops setup and create a separate x86_cpuinit struct
which holds the function for the secondary evtl. hotplugabble CPUs.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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We really do not need two paravirt/x86_init_ops functions which are
called in two consecutive source lines. Move the only user of
post_allocator_init into the already existing pagetable_setup_done
function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Replace more paravirt hackery by proper x86_init_ops.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Replace another obscure paravirt magic and move it to
x86_init_ops. Such a hook is also useful for embedded and special
hardware.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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ARCH_SETUP is a horrible leftover from the old arch/i386 mach support
code. It still has a lonely user in xen. Move it to x86_init_ops.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Replace the quirks by a simple x86_init_ops function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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irq_init is overridden by x86_quirks and by paravirts. Unify the whole
mess and make it an unconditional x86_init_ops function which defaults
to the standard function and can be overridden by the early platform
code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Replace the quirk machinery by a x86_init_ops function which
defaults to the standard implementation. This is also a preparatory
patch for Moorestown support which needs to replace the default
init_ISA_irqs as well.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Replace the quirk machinery by a x86_init_ops function which defaults
to the standard implementation.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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