| Commit message (Collapse) | Author | Age | Files | Lines |
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- separate the namespace
- remove macros
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- separate the namespace
- remove macros
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- separate the namespace
- remove macros
- move the default vector-allocation-domain to mach-generic
- fix whitespace damage
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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These flags are completely unused. (the in-kernel IRQ balancer has
been removed from the upstream kernel.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Clean up these methods - to make it clearer which function is
used in which case.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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This field name was unreasonably long - shorten it.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
The bigsmp and es7000 subarchitectures un-defined APIC_DEST_LOGICAL in
a rather nasty way by re-defining it to zero. That is infinitely
fragile and makes it very hard to see what to code really does in
a given context. The very same constant has different meanings and
values - depending on which subarch is enabled.
Untangle this mess by never undefining the constant, but instead
propagating the right values into the genapic driver templates.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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the ->ESR_DISABLE shouting variant was used to enable the esr_disable
macro wrappers. Those ugly macros are removed now so we can rename
->ESR_DISABLE to ->disable_esr
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Most subarchitectures want to disable the APIC ESR (Error Status Register),
because they generally have hardware hacks that wrap standard CPUs into
a bigger system and hence the APIC bus is quite non-standard and weirdnesses
(lockups) have been seen with ESR reporting.
Remove the esr_disable macros and put the desired flag into each
subarchitecture's genapic template directly.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
use apic->target_cpus() directly instead of the TARGET_CPUS wrapper.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Remove the wrapper macros IRQ_DEST_MODE and IRQ_DELIVERY_MODE.
The typical 32-bit and the 64-bit build all dereference via the genapic,
so it's pointless to hide that indirection via these ugly macros.
Furthermore, it also obscures subarchitecture details.
So replace it with apic->irq_dest_mode / etc. accesses.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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int_delivery_mode is supposed to mean 'interrupt delivery mode', but
it's quite a misnomer as 'int' we usually think of as an integer type ...
The standard naming for such attributes is 'irq' - so rename the following
fields and macros:
int_delivery_mode => irq_delivery_mode
INT_DELIVERY_MODE => IRQ_DELIVERY_MODE
int_dest_mode => irq_dest_mode
INT_DEST_MODE => IRQ_DEST_MODE
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
x86 subarchitectures each defined a "apic_id_registered()" method,
which could be an inline function depending on which subarch we build
for, and which was also the name of a genapic field.
Untangle this namespace spaghetti by giving each of the instances
a separate name.
Also remove wrapper macro obfuscation.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: refactor code
x86 subarchitectures each defined a "acpi_madt_oem_check()" method,
which could be an inline function, or an extern, or a static function,
and which was also the name of a genapic field.
Untangle this namespace spaghetti by setting ->acpi_madt_oem_check()
to NULL on those subarchitectures that have no detection quirks,
and rename the other ones (summit, es7000) that do.
Also change default_acpi_madt_oem_check() to handle NULL entries,
and clean its control flow up as well.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- reorder fields so that they appear in struct genapic field ordering
- add zero-initialized fields too so that it's apparent which functionality
is default / missing.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- reorder fields so that they appear in struct genapic field ordering
- add zero-initialized fields too so that it's apparent which functionality
is default / missing.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- reorder fields so that they appear in struct genapic field ordering
- add zero-initialized fields too so that it's apparent which functionality
is default / missing.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- reorder fields so that they appear in struct genapic field ordering
- add zero-initialized fields too so that it's apparent which functionality
is default / missing.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- reorder fields so that they appear in struct genapic field ordering
- add zero-initialized fields too so that it's apparent which functionality
is default / missing.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Rename genapic-> to apic-> references because in a future chagne we'll
open-code all the indirect calls (instead of obscuring them via macros),
so we want this reference to be as short as possible.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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'x86/doc', 'x86/header-fixes', 'x86/mm', 'x86/paravirt', 'x86/pat', 'x86/setup-v2', 'x86/subarch', 'x86/uaccess' and 'x86/urgent' into x86/core
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Impact: re-enable CPUID unmasking on affected processors
As far as I am capable of discerning from the documentation,
MSR_IA32_MISC_ENABLE should be available for all family 0xf CPUs, as
well as family 6 for model >= 0xd (newer Pentium M).
The documentation on this isn't ideal, so we need to be on the lookout
for errors, still.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Impact: use new framework
Use {get|put}_user_try, catch, and _ex in arch/x86/kernel/signal.c.
Note: this patch contains "WARNING: line over 80 characters", because when
introducing new block I insert an indent to avoid mistakes by edit.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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pte_flags() was introduced as a new pvop in order to extract just the
flags portion of a pte, which is a potentially cheaper operation than
extracting the page number as well. It turns out this operation is
not needed, because simply using a mask to extract the flags from a
pte is sufficient for all current users.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: add a stack dump to early IRQs/faults
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Remove such constructs:
#ifdef CONFIG_EARLY_PRINTK
call early_printk
#else
call printk
#endif
Not only are they ugly, they are also pointless: a call to printk()
maps to early_printk during early bootup anyway, if CONFIG_EARLY_PRINTK
is enabled.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: Fixes potential crashes on misconfigured systems.
Some CPU features require specific CPUID levels to be available in
order to function, as they contain information about the operation of
a specific feature. However, some BIOSes and virtualization software
provide the ability to mask CPUID levels in order to support legacy
operating systems. We try to enable such CPUID levels when we know
how to do it, but for the remaining cases, filter out such CPU
features when there is no way for us to support them.
Do this in one place, in the CPUID code, with a table-driven approach.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: Cleanup
When PAT was originally introduced, it was handled specially for a few
reasons:
- PAT bugs are hard to track down, so we wanted to maintain a
whitelist of CPUs.
- The i386 and x86-64 CPUID code was not yet unified.
Both of these are now obsolete, so handle PAT like any other features,
including ordinary feature blacklisting due to known bugs.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: Cleanup
While I was looking through the new and improved bootstrap code - great
work that, thanks! I found the below a slight improvement.
Remove unnecessary ugly #ifdef construct around debug register clear.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: cleanup
Remove byte locks implementation, which was introduced by Jeremy in
8efcbab6 ("paravirt: introduce a "lock-byte" spinlock implementation"),
but turned out to be dead code that is not used by any in-kernel
virtualization guest (Xen uses its own variant of spinlocks implementation
and KVM is not planning to move to byte locks).
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Since commit 75c46fa, "x64, x2apic/intr-remap: MSI and MSI-X
support for interrupt remapping infrastructure", x86 has had an
implementation of arch_setup_msi_irqs().
That implementation does not call arch_setup_msi_irq(), instead it calls
setup_irq(). No other x86 code calls arch_setup_msi_irq().
That leaves only arch_setup_msi_irqs() in drivers/pci/msi.c, but that
routine is overridden by the x86 version of arch_setup_msi_irqs().
So arch_setup_msi_irq() is dead code, remove it.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Impact: micro-optimization
The patch below removes an unnecessary locked instruction from
switch_to(). TIF_FORK is only ever set in copy_thread() on initial
process creation, and gets cleared during the first scheduling of the
process. As such, it is safe to use an unlocked test for the flag
within switch_to().
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc into core/percpu
Conflicts:
arch/x86/kernel/setup_percpu.c
Semantic conflict:
arch/x86/kernel/cpu/common.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cosmetic cleanup
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: build fix
x86_cpu_to_apicid and x86_bios_cpu_apicid aren't defined for voyage.
Earlier patch forgot to conditionalize early percpu clearing. Fix it.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: sync 32 and 64-bit code
Merge load_gs_base() into switch_to_new_gdt(). Load the GDT and
per-cpu state for the boot cpu when its new area is set up.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: cleanup
Rename init_gdt() to setup_percpu_segment(), and move it to
setup_percpu.c.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: standardize all x86 platforms on same setup code
With the preceding changes, Voyager can use the same per-cpu setup
code as all the other x86 platforms.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: minor cleanup
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: Small cleanup
Define BOOT_PERCPU_OFFSET and use it for this_cpu_offset and
__per_cpu_offset initializers.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: Minor build optimization
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: Code movement
Move the variable definitions to apic.c. Ifdef the copying of
the two early per-cpu variables, since Voyager doesn't use them.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: cleanup
The way the code is written, align is always PAGE_SIZE. Simplify
the code by removing the align variable.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: Code movement, no functional change.
Move setup_cpu_local_masks() to kernel/cpu/common.c, where the
masks are defined.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: Code movement, no functional change.
Move the 64-bit NUMA code from setup_percpu.c to numa_64.c
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Impact: minor optimization
Eliminates the need for two loops over possible cpus.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Conflicts:
arch/x86/kernel/setup_percpu.c
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
debugobjects: add and use INIT_WORK_ON_STACK
rcu: remove duplicate CONFIG_RCU_CPU_STALL_DETECTOR
relay: fix lock imbalance in relay_late_setup_files
oprofile: fix uninitialized use of struct op_entry
rcu: move Kconfig menu
softlock: fix false panic which can occur if softlockup_thresh is reduced
rcu: add __cpuinit to rcu_init_percpu_data()
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Impact: Fix debugobjects warning
debugobject enabled kernels spit out a warning in hpet code due to a
workqueue which is initialized on stack.
Add INIT_WORK_ON_STACK() which calls init_timer_on_stack() and use it
in hpet.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
hrtimers: fix inconsistent lock state on resume in hres_timers_resume
time-sched.c: tick_nohz_update_jiffies should be static
locking, hpet: annotate false positive warning
kernel/fork.c: unused variable 'ret'
itimers: remove the per-cpu-ish-ness
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