diff options
| author | Alexander Gordeev <agordeev@redhat.com> | 2012-06-07 15:14:49 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-06-08 11:44:27 +0200 |
| commit | 9d8e10667624ea6411f04495aef1fa4a8a778ee8 (patch) | |
| tree | d804e319fbb27a21e532b9888d9ee3b13c2640a9 /arch/x86/include | |
| parent | 6398268d2bc454735f11e08705e858f9fdf5c750 (diff) | |
x86/apic: Factor out default vector_allocation_domain() operation
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/20120607131449.GC4759@dhcp-26-207.brq.redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/apic.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index bef571769e68..feb2dbdae9ec 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -615,6 +615,27 @@ extern unsigned int default_cpu_mask_to_apicid_and(const struct cpumask *cpumask, const struct cpumask *andmask); +static inline void +flat_vector_allocation_domain(int cpu, struct cpumask *retmask) +{ + /* Careful. Some cpus do not strictly honor the set of cpus + * specified in the interrupt destination when using lowest + * priority interrupt delivery mode. + * + * In particular there was a hyperthreading cpu observed to + * deliver interrupts to the wrong hyperthread when only one + * hyperthread was specified in the interrupt desitination. + */ + cpumask_clear(retmask); + cpumask_bits(retmask)[0] = APIC_ALL_CPUS; +} + +static inline void +default_vector_allocation_domain(int cpu, struct cpumask *retmask) +{ + cpumask_copy(retmask, cpumask_of(cpu)); +} + static inline unsigned long default_check_apicid_used(physid_mask_t *map, int apicid) { return physid_isset(apicid, *map); |