diff options
Diffstat (limited to 'arch/x86/kernel/genapic_flat_64.c')
| -rw-r--r-- | arch/x86/kernel/genapic_flat_64.c | 76 |
1 files changed, 50 insertions, 26 deletions
diff --git a/arch/x86/kernel/genapic_flat_64.c b/arch/x86/kernel/genapic_flat_64.c index c0262791bda..50eebd0328f 100644 --- a/arch/x86/kernel/genapic_flat_64.c +++ b/arch/x86/kernel/genapic_flat_64.c @@ -30,12 +30,12 @@ static int flat_acpi_madt_oem_check(char *oem_id, char *oem_table_id) return 1; } -static cpumask_t flat_target_cpus(void) +static const cpumask_t *flat_target_cpus(void) { - return cpu_online_map; + return &cpu_online_map; } -static cpumask_t flat_vector_allocation_domain(int cpu) +static void flat_vector_allocation_domain(int cpu, cpumask_t *retmask) { /* Careful. Some cpus do not strictly honor the set of cpus * specified in the interrupt destination when using lowest @@ -45,8 +45,7 @@ static cpumask_t flat_vector_allocation_domain(int cpu) * deliver interrupts to the wrong hyperthread when only one * hyperthread was specified in the interrupt desitination. */ - cpumask_t domain = { { [0] = APIC_ALL_CPUS, } }; - return domain; + *retmask = (cpumask_t) { {[0] = APIC_ALL_CPUS, } }; } /* @@ -69,9 +68,8 @@ static void flat_init_apic_ldr(void) apic_write(APIC_LDR, val); } -static void flat_send_IPI_mask(cpumask_t cpumask, int vector) +static inline void _flat_send_IPI_mask(unsigned long mask, int vector) { - unsigned long mask = cpus_addr(cpumask)[0]; unsigned long flags; local_irq_save(flags); @@ -79,20 +77,40 @@ static void flat_send_IPI_mask(cpumask_t cpumask, int vector) local_irq_restore(flags); } +static void flat_send_IPI_mask(const cpumask_t *cpumask, int vector) +{ + unsigned long mask = cpus_addr(*cpumask)[0]; + + _flat_send_IPI_mask(mask, vector); +} + +static void flat_send_IPI_mask_allbutself(const cpumask_t *cpumask, int vector) +{ + unsigned long mask = cpus_addr(*cpumask)[0]; + int cpu = smp_processor_id(); + + if (cpu < BITS_PER_LONG) + clear_bit(cpu, &mask); + _flat_send_IPI_mask(mask, vector); +} + static void flat_send_IPI_allbutself(int vector) { + int cpu = smp_processor_id(); #ifdef CONFIG_HOTPLUG_CPU int hotplug = 1; #else int hotplug = 0; #endif if (hotplug || vector == NMI_VECTOR) { - cpumask_t allbutme = cpu_online_map; + if (!cpus_equal(cpu_online_map, cpumask_of_cpu(cpu))) { + unsigned long mask = cpus_addr(cpu_online_map)[0]; - cpu_clear(smp_processor_id(), allbutme); + if (cpu < BITS_PER_LONG) + clear_bit(cpu, &mask); - if (!cpus_empty(allbutme)) - flat_send_IPI_mask(allbutme, vector); + _flat_send_IPI_mask(mask, vector); + } } else if (num_online_cpus() > 1) { __send_IPI_shortcut(APIC_DEST_ALLBUT, vector,APIC_DEST_LOGICAL); } @@ -101,7 +119,7 @@ static void flat_send_IPI_allbutself(int vector) static void flat_send_IPI_all(int vector) { if (vector == NMI_VECTOR) - flat_send_IPI_mask(cpu_online_map, vector); + flat_send_IPI_mask(&cpu_online_map, vector); else __send_IPI_shortcut(APIC_DEST_ALLINC, vector, APIC_DEST_LOGICAL); } @@ -135,9 +153,9 @@ static int flat_apic_id_registered(void) return physid_isset(read_xapic_id(), phys_cpu_present_map); } -static unsigned int flat_cpu_mask_to_apicid(cpumask_t cpumask) +static unsigned int flat_cpu_mask_to_apicid(const cpumask_t *cpumask) { - return cpus_addr(cpumask)[0] & APIC_ALL_CPUS; + return cpus_addr(*cpumask)[0] & APIC_ALL_CPUS; } static unsigned int phys_pkg_id(int index_msb) @@ -157,6 +175,7 @@ struct genapic apic_flat = { .send_IPI_all = flat_send_IPI_all, .send_IPI_allbutself = flat_send_IPI_allbutself, .send_IPI_mask = flat_send_IPI_mask, + .send_IPI_mask_allbutself = flat_send_IPI_mask_allbutself, .send_IPI_self = apic_send_IPI_self, .cpu_mask_to_apicid = flat_cpu_mask_to_apicid, .phys_pkg_id = phys_pkg_id, @@ -188,35 +207,39 @@ static int physflat_acpi_madt_oem_check(char *oem_id, char *oem_table_id) return 0; } -static cpumask_t physflat_target_cpus(void) +static const cpumask_t *physflat_target_cpus(void) { - return cpu_online_map; + return &cpu_online_map; } -static cpumask_t physflat_vector_allocation_domain(int cpu) +static void physflat_vector_allocation_domain(int cpu, cpumask_t *retmask) { - return cpumask_of_cpu(cpu); + cpus_clear(*retmask); + cpu_set(cpu, *retmask); } -static void physflat_send_IPI_mask(cpumask_t cpumask, int vector) +static void physflat_send_IPI_mask(const cpumask_t *cpumask, int vector) { send_IPI_mask_sequence(cpumask, vector); } -static void physflat_send_IPI_allbutself(int vector) +static void physflat_send_IPI_mask_allbutself(const cpumask_t *cpumask, + int vector) { - cpumask_t allbutme = cpu_online_map; + send_IPI_mask_allbutself(cpumask, vector); +} - cpu_clear(smp_processor_id(), allbutme); - physflat_send_IPI_mask(allbutme, vector); +static void physflat_send_IPI_allbutself(int vector) +{ + send_IPI_mask_allbutself(&cpu_online_map, vector); } static void physflat_send_IPI_all(int vector) { - physflat_send_IPI_mask(cpu_online_map, vector); + physflat_send_IPI_mask(&cpu_online_map, vector); } -static unsigned int physflat_cpu_mask_to_apicid(cpumask_t cpumask) +static unsigned int physflat_cpu_mask_to_apicid(const cpumask_t *cpumask) { int cpu; @@ -224,7 +247,7 @@ static unsigned int physflat_cpu_mask_to_apicid(cpumask_t cpumask) * We're using fixed IRQ delivery, can only return one phys APIC ID. * May as well be the first. */ - cpu = first_cpu(cpumask); + cpu = first_cpu(*cpumask); if ((unsigned)cpu < nr_cpu_ids) return per_cpu(x86_cpu_to_apicid, cpu); else @@ -243,6 +266,7 @@ struct genapic apic_physflat = { .send_IPI_all = physflat_send_IPI_all, .send_IPI_allbutself = physflat_send_IPI_allbutself, .send_IPI_mask = physflat_send_IPI_mask, + .send_IPI_mask_allbutself = physflat_send_IPI_mask_allbutself, .send_IPI_self = apic_send_IPI_self, .cpu_mask_to_apicid = physflat_cpu_mask_to_apicid, .phys_pkg_id = phys_pkg_id, |