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>

11 files changed, 32 insertions, 117 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);
diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
index 55b97ce4fa19..bddc92566d0a 100644
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -36,20 +36,6 @@ static int flat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
         return 1;
 }
 
-static 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;
-}
-
 /*
  * Set up the logical destination ID.
  *
@@ -257,12 +243,6 @@ static int physflat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
         return 0;
 }
 
-static void physflat_vector_allocation_domain(int cpu, struct cpumask *retmask)
-{
-        cpumask_clear(retmask);
-        cpumask_set_cpu(cpu, retmask);
-}
-
 static void physflat_send_IPI_mask(const struct cpumask *cpumask, int vector)
 {
         default_send_IPI_mask_sequence_phys(cpumask, vector);
@@ -309,7 +289,7 @@ static struct apic apic_physflat =  {
         .check_apicid_used              = NULL,
         .check_apicid_present           = NULL,
 
-        .vector_allocation_domain       = physflat_vector_allocation_domain,
+        .vector_allocation_domain       = default_vector_allocation_domain,
         /* not needed, but shouldn't hurt: */
         .init_apic_ldr                  = flat_init_apic_ldr,
 
diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c
index 7c3dd4fe0686..3e43cf528939 100644
--- a/arch/x86/kernel/apic/apic_noop.c
+++ b/arch/x86/kernel/apic/apic_noop.c
@@ -104,8 +104,7 @@ static void noop_vector_allocation_domain(int cpu, struct cpumask *retmask)
 {
         if (cpu != 0)
                 pr_warning("APIC: Vector allocated for non-BSP cpu\n");
-        cpumask_clear(retmask);
-        cpumask_set_cpu(cpu, retmask);
+        cpumask_copy(retmask, cpumask_of(cpu));
 }
 
 static u32 noop_apic_read(u32 reg)
diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c
index dba4bf2ed566..c028132ad358 100644
--- a/arch/x86/kernel/apic/apic_numachip.c
+++ b/arch/x86/kernel/apic/apic_numachip.c
@@ -72,12 +72,6 @@ static int numachip_phys_pkg_id(int initial_apic_id, int index_msb)
         return initial_apic_id >> index_msb;
 }
 
-static void numachip_vector_allocation_domain(int cpu, struct cpumask *retmask)
-{
-        cpumask_clear(retmask);
-        cpumask_set_cpu(cpu, retmask);
-}
-
 static int __cpuinit numachip_wakeup_secondary(int phys_apicid, unsigned long start_rip)
 {
         union numachip_csr_g3_ext_irq_gen int_gen;
@@ -222,7 +216,7 @@ static struct apic apic_numachip __refconst = {
         .check_apicid_used              = NULL,
         .check_apicid_present           = NULL,
 
-        .vector_allocation_domain       = numachip_vector_allocation_domain,
+        .vector_allocation_domain       = default_vector_allocation_domain,
         .init_apic_ldr                  = flat_init_apic_ldr,
 
         .ioapic_phys_id_map             = NULL,
diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c
index 907aa3d112a6..df342fe4d6aa 100644
--- a/arch/x86/kernel/apic/bigsmp_32.c
+++ b/arch/x86/kernel/apic/bigsmp_32.c
@@ -142,12 +142,6 @@ static const struct dmi_system_id bigsmp_dmi_table[] = {
         { } /* NULL entry stops DMI scanning */
 };
 
-static void bigsmp_vector_allocation_domain(int cpu, struct cpumask *retmask)
-{
-        cpumask_clear(retmask);
-        cpumask_set_cpu(cpu, retmask);
-}
-
 static int probe_bigsmp(void)
 {
         if (def_to_bigsmp)
@@ -176,7 +170,7 @@ static struct apic apic_bigsmp = {
         .check_apicid_used              = bigsmp_check_apicid_used,
         .check_apicid_present           = bigsmp_check_apicid_present,
 
-        .vector_allocation_domain       = bigsmp_vector_allocation_domain,
+        .vector_allocation_domain       = default_vector_allocation_domain,
         .init_apic_ldr                  = bigsmp_init_apic_ldr,
 
         .ioapic_phys_id_map             = bigsmp_ioapic_phys_id_map,
diff --git a/arch/x86/kernel/apic/es7000_32.c b/arch/x86/kernel/apic/es7000_32.c
index db4ab1be3c79..3c42865757e2 100644
--- a/arch/x86/kernel/apic/es7000_32.c
+++ b/arch/x86/kernel/apic/es7000_32.c
@@ -394,21 +394,6 @@ static void es7000_enable_apic_mode(void)
                 WARN(1, "Command failed, status = %x\n", mip_status);
 }
 
-static void es7000_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 void es7000_wait_for_init_deassert(atomic_t *deassert)
 {
         while (!atomic_read(deassert))
@@ -638,7 +623,7 @@ static struct apic __refdata apic_es7000_cluster = {
         .check_apicid_used              = es7000_check_apicid_used,
         .check_apicid_present           = es7000_check_apicid_present,
 
-        .vector_allocation_domain       = es7000_vector_allocation_domain,
+        .vector_allocation_domain       = flat_vector_allocation_domain,
         .init_apic_ldr                  = es7000_init_apic_ldr_cluster,
 
         .ioapic_phys_id_map             = es7000_ioapic_phys_id_map,
@@ -705,7 +690,7 @@ static struct apic __refdata apic_es7000 = {
         .check_apicid_used              = es7000_check_apicid_used,
         .check_apicid_present           = es7000_check_apicid_present,
 
-        .vector_allocation_domain       = es7000_vector_allocation_domain,
+        .vector_allocation_domain       = flat_vector_allocation_domain,
         .init_apic_ldr                  = es7000_init_apic_ldr,
 
         .ioapic_phys_id_map             = es7000_ioapic_phys_id_map,
diff --git a/arch/x86/kernel/apic/numaq_32.c b/arch/x86/kernel/apic/numaq_32.c
index f00a68cca37a..eb2d466fd81a 100644
--- a/arch/x86/kernel/apic/numaq_32.c
+++ b/arch/x86/kernel/apic/numaq_32.c
@@ -441,20 +441,6 @@ static int probe_numaq(void)
         return found_numaq;
 }
 
-static void numaq_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 void numaq_setup_portio_remap(void)
 {
         int num_quads = num_online_nodes();
@@ -491,7 +477,7 @@ static struct apic __refdata apic_numaq = {
         .check_apicid_used              = numaq_check_apicid_used,
         .check_apicid_present           = numaq_check_apicid_present,
 
-        .vector_allocation_domain       = numaq_vector_allocation_domain,
+        .vector_allocation_domain       = flat_vector_allocation_domain,
         .init_apic_ldr                  = numaq_init_apic_ldr,
 
         .ioapic_phys_id_map             = numaq_ioapic_phys_id_map,
diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c
index 71b6ac48ab26..2c6f003b2e4b 100644
--- a/arch/x86/kernel/apic/probe_32.c
+++ b/arch/x86/kernel/apic/probe_32.c
@@ -66,21 +66,6 @@ static void setup_apic_flat_routing(void)
 #endif
 }
 
-static void default_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;
-}
-
 /* should be called last. */
 static int probe_default(void)
 {
@@ -105,7 +90,7 @@ static struct apic apic_default = {
         .check_apicid_used              = default_check_apicid_used,
         .check_apicid_present           = default_check_apicid_present,
 
-        .vector_allocation_domain       = default_vector_allocation_domain,
+        .vector_allocation_domain       = flat_vector_allocation_domain,
         .init_apic_ldr                  = default_init_apic_ldr,
 
         .ioapic_phys_id_map             = default_ioapic_phys_id_map,
diff --git a/arch/x86/kernel/apic/summit_32.c b/arch/x86/kernel/apic/summit_32.c
index 659897c00755..35d254c1fec2 100644
--- a/arch/x86/kernel/apic/summit_32.c
+++ b/arch/x86/kernel/apic/summit_32.c
@@ -320,20 +320,6 @@ static int probe_summit(void)
         return 0;
 }
 
-static void summit_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;
-}
-
 #ifdef CONFIG_X86_SUMMIT_NUMA
 static struct rio_table_hdr *rio_table_hdr;
 static struct scal_detail   *scal_devs[MAX_NUMNODES];
@@ -509,7 +495,7 @@ static struct apic apic_summit = {
         .check_apicid_used              = summit_check_apicid_used,
         .check_apicid_present           = summit_check_apicid_present,
 
-        .vector_allocation_domain       = summit_vector_allocation_domain,
+        .vector_allocation_domain       = flat_vector_allocation_domain,
         .init_apic_ldr                  = summit_init_apic_ldr,
 
         .ioapic_phys_id_map             = summit_ioapic_phys_id_map,
diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c
index f730269edef2..f109388a0e80 100644
--- a/arch/x86/kernel/apic/x2apic_phys.c
+++ b/arch/x86/kernel/apic/x2apic_phys.c
@@ -88,15 +88,6 @@ static int x2apic_phys_probe(void)
         return apic == &apic_x2apic_phys;
 }
 
-/*
- * Each logical cpu is in its own vector allocation domain.
- */
-static void x2apic_vector_allocation_domain(int cpu, struct cpumask *retmask)
-{
-        cpumask_clear(retmask);
-        cpumask_set_cpu(cpu, retmask);
-}
-
 static struct apic apic_x2apic_phys = {
 
         .name                           = "physical x2apic",
@@ -114,7 +105,7 @@ static struct apic apic_x2apic_phys = {
         .check_apicid_used              = NULL,
         .check_apicid_present           = NULL,
 
-        .vector_allocation_domain       = x2apic_vector_allocation_domain,
+        .vector_allocation_domain       = default_vector_allocation_domain,
         .init_apic_ldr                  = init_x2apic_ldr,
 
         .ioapic_phys_id_map             = NULL,
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 16efb92bfea5..df89a7d78748 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -185,12 +185,6 @@ EXPORT_SYMBOL_GPL(uv_possible_blades);
 unsigned long sn_rtc_cycles_per_second;
 EXPORT_SYMBOL(sn_rtc_cycles_per_second);
 
-static void uv_vector_allocation_domain(int cpu, struct cpumask *retmask)
-{
-        cpumask_clear(retmask);
-        cpumask_set_cpu(cpu, retmask);
-}
-
 static int __cpuinit uv_wakeup_secondary(int phys_apicid, unsigned long start_rip)
 {
 #ifdef CONFIG_SMP
@@ -363,7 +357,7 @@ static struct apic __refdata apic_x2apic_uv_x = {
         .check_apicid_used              = NULL,
         .check_apicid_present           = NULL,
 
-        .vector_allocation_domain       = uv_vector_allocation_domain,
+        .vector_allocation_domain       = default_vector_allocation_domain,
         .init_apic_ldr                  = uv_init_apic_ldr,
 
         .ioapic_phys_id_map             = NULL,