diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 13:22:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 13:23:01 -0700 |
| commit | 9301975ec251bab1ad7cfcb84a688b26187e4e4a (patch) | |
| tree | 91e48be0bdc67cbcb75bc8a299a3dcf168e0a814 /include/asm-x86/apic.h | |
| parent | 7110879cf2afbfb7af79675f5ff109e63d631c25 (diff) | |
| parent | dd3a1db900f2a215a7d7dd71b836e149a6cf5fed (diff) | |
Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu
and x86/uv.
The sparseirq branch is just preliminary groundwork: no sparse IRQs are
actually implemented by this tree anymore - just the new APIs are added
while keeping the old way intact as well (the new APIs map 1:1 to
irq_desc[]). The 'real' sparse IRQ support will then be a relatively
small patch ontop of this - with a v2.6.29 merge target.
* 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits)
genirq: improve include files
intr_remapping: fix typo
io_apic: make irq_mis_count available on 64-bit too
genirq: fix name space collisions of nr_irqs in arch/*
genirq: fix name space collision of nr_irqs in autoprobe.c
genirq: use iterators for irq_desc loops
proc: fixup irq iterator
genirq: add reverse iterator for irq_desc
x86: move ack_bad_irq() to irq.c
x86: unify show_interrupts() and proc helpers
x86: cleanup show_interrupts
genirq: cleanup the sparseirq modifications
genirq: remove artifacts from sparseirq removal
genirq: revert dynarray
genirq: remove irq_to_desc_alloc
genirq: remove sparse irq code
genirq: use inline function for irq_to_desc
genirq: consolidate nr_irqs and for_each_irq_desc()
x86: remove sparse irq from Kconfig
genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n
...
Diffstat (limited to 'include/asm-x86/apic.h')
| -rw-r--r-- | include/asm-x86/apic.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/include/asm-x86/apic.h b/include/asm-x86/apic.h index d76a0839abe..ef1d72dbdfe 100644 --- a/include/asm-x86/apic.h +++ b/include/asm-x86/apic.h @@ -40,8 +40,6 @@ extern void generic_apic_probe(void); extern unsigned int apic_verbosity; extern int local_apic_timer_c2_ok; -extern int ioapic_force; - extern int disable_apic; /* * Basic functions accessing APICs. @@ -100,6 +98,20 @@ extern void check_x2apic(void); extern void enable_x2apic(void); extern void enable_IR_x2apic(void); extern void x2apic_icr_write(u32 low, u32 id); +static inline int x2apic_enabled(void) +{ + int msr, msr2; + + if (!cpu_has_x2apic) + return 0; + + rdmsr(MSR_IA32_APICBASE, msr, msr2); + if (msr & X2APIC_ENABLE) + return 1; + return 0; +} +#else +#define x2apic_enabled() 0 #endif struct apic_ops { |