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cpumask: x86: convert cpu_sibling_map/cpu_core_map to cpumask_var_t

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Impact: reduce per-cpu size for CONFIG_CPUMASK_OFFSTACK=y

In most places it's cleaner to use the accessors cpu_sibling_mask()
and cpu_core_mask() wrappers which already exist.

I couldn't avoid cleaning up the access in oprofile, either.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2009-03-13 14:49:50 +10:30
parent fcef8576d8
commit 7ad728f981
9 changed files with 32 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/include/asm/smp.h
View File

@ -21,19 +21,19 @@
extern int smp_num_siblings;
extern unsigned int num_processors;
DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
DECLARE_PER_CPU(cpumask_t, cpu_core_map);
DECLARE_PER_CPU(cpumask_var_t, cpu_sibling_map);
DECLARE_PER_CPU(cpumask_var_t, cpu_core_map);
DECLARE_PER_CPU(u16, cpu_llc_id);
DECLARE_PER_CPU(int, cpu_number);
static inline struct cpumask *cpu_sibling_mask(int cpu)
{
return &per_cpu(cpu_sibling_map, cpu);
return per_cpu(cpu_sibling_map, cpu);
}
static inline struct cpumask *cpu_core_mask(int cpu)
{
return &per_cpu(cpu_core_map, cpu);
return per_cpu(cpu_core_map, cpu);
}
DECLARE_EARLY_PER_CPU(u16, x86_cpu_to_apicid);

6
arch/x86/include/asm/topology.h
View File

@ -249,8 +249,8 @@ extern const struct cpumask *cpu_coregroup_mask(int cpu);
#ifdef ENABLE_TOPO_DEFINES
#define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id)
#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id)
#define topology_core_cpumask(cpu) (&per_cpu(cpu_core_map, cpu))
#define topology_thread_cpumask(cpu) (&per_cpu(cpu_sibling_map, cpu))
#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
#define topology_thread_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))
/* indicates that pointers to the topology cpumask_t maps are valid */
#define arch_provides_topology_pointers yes
@ -264,7 +264,7 @@ struct pci_bus;
void set_pci_bus_resources_arch_default(struct pci_bus *b);
#ifdef CONFIG_SMP
#define mc_capable() (cpus_weight(per_cpu(cpu_core_map, 0)) != nr_cpu_ids)
#define mc_capable() (cpumask_weight(cpu_core_mask(0)) != nr_cpu_ids)
#define smt_capable() (smp_num_siblings > 1)
#endif

2
arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
View File

@ -203,7 +203,7 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
unsigned int i;
#ifdef CONFIG_SMP
cpumask_copy(policy->cpus, &per_cpu(cpu_sibling_map, policy->cpu));
cpumask_copy(policy->cpus, cpu_sibling_mask(policy->cpu));
#endif
/* Errata workaround */

13
arch/x86/kernel/cpu/cpufreq/powernow-k8.c
View File

@ -56,7 +56,10 @@ static DEFINE_PER_CPU(struct powernow_k8_data *, powernow_data);
static int cpu_family = CPU_OPTERON;
#ifndef CONFIG_SMP
DEFINE_PER_CPU(cpumask_t, cpu_core_map);
static inline const struct cpumask *cpu_core_mask(int cpu)
{
return cpumask_of(0);
}
#endif
/* Return a frequency in MHz, given an input fid */
@ -654,7 +657,7 @@ static int fill_powernow_table(struct powernow_k8_data *data, struct pst_s *pst,
dprintk("cfid 0x%x, cvid 0x%x\n", data->currfid, data->currvid);
data->powernow_table = powernow_table;
if (first_cpu(per_cpu(cpu_core_map, data->cpu)) == data->cpu)
if (cpumask_first(cpu_core_mask(data->cpu)) == data->cpu)
print_basics(data);
for (j = 0; j < data->numps; j++)
@ -808,7 +811,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
/* fill in data */
data->numps = data->acpi_data.state_count;
if (first_cpu(per_cpu(cpu_core_map, data->cpu)) == data->cpu)
if (cpumask_first(cpu_core_mask(data->cpu)) == data->cpu)
print_basics(data);
powernow_k8_acpi_pst_values(data, 0);
@ -1224,7 +1227,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
if (cpu_family == CPU_HW_PSTATE)
cpumask_copy(pol->cpus, cpumask_of(pol->cpu));
else
cpumask_copy(pol->cpus, &per_cpu(cpu_core_map, pol->cpu));
cpumask_copy(pol->cpus, cpu_core_mask(pol->cpu));
data->available_cores = pol->cpus;
if (cpu_family == CPU_HW_PSTATE)
@ -1286,7 +1289,7 @@ static unsigned int powernowk8_get (unsigned int cpu)
unsigned int khz = 0;
unsigned int first;
first = first_cpu(per_cpu(cpu_core_map, cpu));
first = cpumask_first(cpu_core_mask(cpu));
data = per_cpu(powernow_data, first);
if (!data)

2
arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
View File

@ -322,7 +322,7 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
/* only run on CPU to be set, or on its sibling */
#ifdef CONFIG_SMP
cpumask_copy(policy->cpus, &per_cpu(cpu_sibling_map, policy->cpu));
cpumask_copy(policy->cpus, cpu_sibling_mask(policy->cpu));
#endif
cpus_allowed = current->cpus_allowed;

6
arch/x86/kernel/cpu/mcheck/mce_amd_64.c
View File

@ -477,7 +477,7 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
#ifdef CONFIG_SMP
if (cpu_data(cpu).cpu_core_id && shared_bank[bank]) { /* symlink */
i = cpumask_first(&per_cpu(cpu_core_map, cpu));
i = cpumask_first(cpu_core_mask(cpu));
/* first core not up yet */
if (cpu_data(i).cpu_core_id)
@ -497,7 +497,7 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
if (err)
goto out;
cpumask_copy(b->cpus, &per_cpu(cpu_core_map, cpu));
cpumask_copy(b->cpus, cpu_core_mask(cpu));
per_cpu(threshold_banks, cpu)[bank] = b;
goto out;
}
@ -521,7 +521,7 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
#ifndef CONFIG_SMP
cpumask_setall(b->cpus);
#else
cpumask_copy(b->cpus, &per_cpu(cpu_core_map, cpu));
cpumask_copy(b->cpus, cpu_core_mask(cpu));
#endif
per_cpu(threshold_banks, cpu)[bank] = b;

2
arch/x86/kernel/cpu/proc.c
View File

@ -14,7 +14,7 @@ static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c,
if (c->x86_max_cores * smp_num_siblings > 1) {
seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
seq_printf(m, "siblings\t: %d\n",
cpus_weight(per_cpu(cpu_core_map, cpu)));
cpumask_weight(cpu_sibling_mask(cpu)));
seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
seq_printf(m, "apicid\t\t: %d\n", c->apicid);

12
arch/x86/kernel/smpboot.c
View File

@ -101,11 +101,11 @@ EXPORT_SYMBOL(smp_num_siblings);
DEFINE_PER_CPU(u16, cpu_llc_id) = BAD_APICID;
/* representing HT siblings of each logical CPU */
DEFINE_PER_CPU(cpumask_t, cpu_sibling_map);
DEFINE_PER_CPU(cpumask_var_t, cpu_sibling_map);
EXPORT_PER_CPU_SYMBOL(cpu_sibling_map);
/* representing HT and core siblings of each logical CPU */
DEFINE_PER_CPU(cpumask_t, cpu_core_map);
DEFINE_PER_CPU(cpumask_var_t, cpu_core_map);
EXPORT_PER_CPU_SYMBOL(cpu_core_map);
/* Per CPU bogomips and other parameters */
@ -1026,6 +1026,8 @@ static void __init smp_cpu_index_default(void)
*/
void __init native_smp_prepare_cpus(unsigned int max_cpus)
{
unsigned int i;
preempt_disable();
smp_cpu_index_default();
current_cpu_data = boot_cpu_data;
@ -1039,6 +1041,12 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
boot_cpu_logical_apicid = logical_smp_processor_id();
#endif
current_thread_info()->cpu = 0; /* needed? */
for_each_possible_cpu(i) {
alloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL);
alloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL);
cpumask_clear(per_cpu(cpu_core_map, i));
cpumask_clear(per_cpu(cpu_sibling_map, i));
}
set_cpu_sibling_map(0);
enable_IR_x2apic();

2
arch/x86/oprofile/op_model_p4.c
View File

@ -380,7 +380,7 @@ static unsigned int get_stagger(void)
{
#ifdef CONFIG_SMP
int cpu = smp_processor_id();
return (cpu != first_cpu(per_cpu(cpu_sibling_map, cpu)));
return cpu != cpumask_first(__get_cpu_var(cpu_sibling_map));
#endif
return 0;
}