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Merge branch 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

Browse source 
* 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (77 commits)
  x86: setup_per_cpu_areas() cleanup
  cpumask: fix compile error when CONFIG_NR_CPUS is not defined
  cpumask: use alloc_cpumask_var_node where appropriate
  cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t
  x86: use cpumask_var_t in acpi/boot.c
  x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids
  sched: put back some stack hog changes that were undone in kernel/sched.c
  x86: enable cpus display of kernel_max and offlined cpus
  ia64: cpumask fix for is_affinity_mask_valid()
  cpumask: convert RCU implementations, fix
  xtensa: define __fls
  mn10300: define __fls
  m32r: define __fls
  h8300: define __fls
  frv: define __fls
  cris: define __fls
  cpumask: CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
  cpumask: zero extra bits in alloc_cpumask_var_node
  cpumask: replace for_each_cpu_mask_nr with for_each_cpu in kernel/time/
  cpumask: convert mm/
  ...
This commit is contained in:
Linus Torvalds 2009-01-03 12:04:39 -08:00
commit 7d3b56ba37
112 changed files with 1285 additions and 878 deletions
Download patch file Download diff file Expand all files Collapse all files

14
drivers/acpi/processor_core.c
View file

@ -826,6 +826,11 @@ static int acpi_processor_add(struct acpi_device *device)
if (!pr)
return -ENOMEM;
if (!alloc_cpumask_var(&pr->throttling.shared_cpu_map, GFP_KERNEL)) {
kfree(pr);
return -ENOMEM;
}
pr->handle = device->handle;
strcpy(acpi_device_name(device), ACPI_PROCESSOR_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS);
@ -845,10 +850,8 @@ static int acpi_processor_remove(struct acpi_device *device, int type)
pr = acpi_driver_data(device);
if (pr->id >= nr_cpu_ids) {
kfree(pr);
return 0;
}
if (pr->id >= nr_cpu_ids)
goto free;
if (type == ACPI_BUS_REMOVAL_EJECT) {
if (acpi_processor_handle_eject(pr))
@ -873,6 +876,9 @@ static int acpi_processor_remove(struct acpi_device *device, int type)
per_cpu(processors, pr->id) = NULL;
per_cpu(processor_device_array, pr->id) = NULL;
free:
free_cpumask_var(pr->throttling.shared_cpu_map);
kfree(pr);
return 0;

28
drivers/acpi/processor_perflib.c
View file

@ -588,12 +588,15 @@ int acpi_processor_preregister_performance(
int count, count_target;
int retval = 0;
unsigned int i, j;
cpumask_t covered_cpus;
cpumask_var_t covered_cpus;
struct acpi_processor *pr;
struct acpi_psd_package *pdomain;
struct acpi_processor *match_pr;
struct acpi_psd_package *match_pdomain;
if (!alloc_cpumask_var(&covered_cpus, GFP_KERNEL))
return -ENOMEM;
mutex_lock(&performance_mutex);
retval = 0;
@ -617,7 +620,7 @@ int acpi_processor_preregister_performance(
}
pr->performance = percpu_ptr(performance, i);
cpu_set(i, pr->performance->shared_cpu_map);
cpumask_set_cpu(i, pr->performance->shared_cpu_map);
if (acpi_processor_get_psd(pr)) {
retval = -EINVAL;
continue;
@ -650,18 +653,18 @@ int acpi_processor_preregister_performance(
}
}
cpus_clear(covered_cpus);
cpumask_clear(covered_cpus);
for_each_possible_cpu(i) {
pr = per_cpu(processors, i);
if (!pr)
continue;
if (cpu_isset(i, covered_cpus))
if (cpumask_test_cpu(i, covered_cpus))
continue;
pdomain = &(pr->performance->domain_info);
cpu_set(i, pr->performance->shared_cpu_map);
cpu_set(i, covered_cpus);
cpumask_set_cpu(i, pr->performance->shared_cpu_map);
cpumask_set_cpu(i, covered_cpus);
if (pdomain->num_processors <= 1)
continue;
@ -699,8 +702,8 @@ int acpi_processor_preregister_performance(
goto err_ret;
}
cpu_set(j, covered_cpus);
cpu_set(j, pr->performance->shared_cpu_map);
cpumask_set_cpu(j, covered_cpus);
cpumask_set_cpu(j, pr->performance->shared_cpu_map);
count++;
}
@ -718,8 +721,8 @@ int acpi_processor_preregister_performance(
match_pr->performance->shared_type =
pr->performance->shared_type;
match_pr->performance->shared_cpu_map =
pr->performance->shared_cpu_map;
cpumask_copy(match_pr->performance->shared_cpu_map,
pr->performance->shared_cpu_map);
}
}
@ -731,14 +734,15 @@ err_ret:
/* Assume no coordination on any error parsing domain info */
if (retval) {
cpus_clear(pr->performance->shared_cpu_map);
cpu_set(i, pr->performance->shared_cpu_map);
cpumask_clear(pr->performance->shared_cpu_map);
cpumask_set_cpu(i, pr->performance->shared_cpu_map);
pr->performance->shared_type = CPUFREQ_SHARED_TYPE_ALL;
}
pr->performance = NULL; /* Will be set for real in register */
}
mutex_unlock(&performance_mutex);
free_cpumask_var(covered_cpus);
return retval;
}
EXPORT_SYMBOL(acpi_processor_preregister_performance);

80
drivers/acpi/processor_throttling.c
View file

@ -61,11 +61,14 @@ static int acpi_processor_update_tsd_coord(void)
int count, count_target;
int retval = 0;
unsigned int i, j;
cpumask_t covered_cpus;
cpumask_var_t covered_cpus;
struct acpi_processor *pr, *match_pr;
struct acpi_tsd_package *pdomain, *match_pdomain;
struct acpi_processor_throttling *pthrottling, *match_pthrottling;
if (!alloc_cpumask_var(&covered_cpus, GFP_KERNEL))
return -ENOMEM;
/*
* Now that we have _TSD data from all CPUs, lets setup T-state
* coordination between all CPUs.
@ -91,19 +94,19 @@ static int acpi_processor_update_tsd_coord(void)
if (retval)
goto err_ret;
cpus_clear(covered_cpus);
cpumask_clear(covered_cpus);
for_each_possible_cpu(i) {
pr = per_cpu(processors, i);
if (!pr)
continue;
if (cpu_isset(i, covered_cpus))
if (cpumask_test_cpu(i, covered_cpus))
continue;
pthrottling = &pr->throttling;
pdomain = &(pthrottling->domain_info);
cpu_set(i, pthrottling->shared_cpu_map);
cpu_set(i, covered_cpus);
cpumask_set_cpu(i, pthrottling->shared_cpu_map);
cpumask_set_cpu(i, covered_cpus);
/*
* If the number of processor in the TSD domain is 1, it is
* unnecessary to parse the coordination for this CPU.
@ -144,8 +147,8 @@ static int acpi_processor_update_tsd_coord(void)
goto err_ret;
}
cpu_set(j, covered_cpus);
cpu_set(j, pthrottling->shared_cpu_map);
cpumask_set_cpu(j, covered_cpus);
cpumask_set_cpu(j, pthrottling->shared_cpu_map);
count++;
}
for_each_possible_cpu(j) {
@ -165,12 +168,14 @@ static int acpi_processor_update_tsd_coord(void)
* If some CPUS have the same domain, they
* will have the same shared_cpu_map.
*/
match_pthrottling->shared_cpu_map =
pthrottling->shared_cpu_map;
cpumask_copy(match_pthrottling->shared_cpu_map,
pthrottling->shared_cpu_map);
}
}
err_ret:
free_cpumask_var(covered_cpus);
for_each_possible_cpu(i) {
pr = per_cpu(processors, i);
if (!pr)
@ -182,8 +187,8 @@ err_ret:
*/
if (retval) {
pthrottling = &(pr->throttling);
cpus_clear(pthrottling->shared_cpu_map);
cpu_set(i, pthrottling->shared_cpu_map);
cpumask_clear(pthrottling->shared_cpu_map);
cpumask_set_cpu(i, pthrottling->shared_cpu_map);
pthrottling->shared_type = DOMAIN_COORD_TYPE_SW_ALL;
}
}
@ -567,7 +572,7 @@ static int acpi_processor_get_tsd(struct acpi_processor *pr)
pthrottling = &pr->throttling;
pthrottling->tsd_valid_flag = 1;
pthrottling->shared_type = pdomain->coord_type;
cpu_set(pr->id, pthrottling->shared_cpu_map);
cpumask_set_cpu(pr->id, pthrottling->shared_cpu_map);
/*
* If the coordination type is not defined in ACPI spec,
* the tsd_valid_flag will be clear and coordination type
@ -826,7 +831,7 @@ static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr)
static int acpi_processor_get_throttling(struct acpi_processor *pr)
{
cpumask_t saved_mask;
cpumask_var_t saved_mask;
int ret;
if (!pr)
@ -834,14 +839,20 @@ static int acpi_processor_get_throttling(struct acpi_processor *pr)
if (!pr->flags.throttling)
return -ENODEV;
if (!alloc_cpumask_var(&saved_mask, GFP_KERNEL))
return -ENOMEM;
/*
* Migrate task to the cpu pointed by pr.
*/
saved_mask = current->cpus_allowed;
set_cpus_allowed_ptr(current, &cpumask_of_cpu(pr->id));
cpumask_copy(saved_mask, &current->cpus_allowed);
/* FIXME: use work_on_cpu() */
set_cpus_allowed_ptr(current, cpumask_of(pr->id));
ret = pr->throttling.acpi_processor_get_throttling(pr);
/* restore the previous state */
set_cpus_allowed_ptr(current, &saved_mask);
set_cpus_allowed_ptr(current, saved_mask);
free_cpumask_var(saved_mask);
return ret;
}
@ -986,13 +997,13 @@ static int acpi_processor_set_throttling_ptc(struct acpi_processor *pr,
int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
{
cpumask_t saved_mask;
cpumask_var_t saved_mask;
int ret = 0;
unsigned int i;
struct acpi_processor *match_pr;
struct acpi_processor_throttling *p_throttling;
struct throttling_tstate t_state;
cpumask_t online_throttling_cpus;
cpumask_var_t online_throttling_cpus;
if (!pr)
return -EINVAL;
@ -1003,17 +1014,25 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
if ((state < 0) || (state > (pr->throttling.state_count - 1)))
return -EINVAL;
saved_mask = current->cpus_allowed;
if (!alloc_cpumask_var(&saved_mask, GFP_KERNEL))
return -ENOMEM;
if (!alloc_cpumask_var(&online_throttling_cpus, GFP_KERNEL)) {
free_cpumask_var(saved_mask);
return -ENOMEM;
}
cpumask_copy(saved_mask, &current->cpus_allowed);
t_state.target_state = state;
p_throttling = &(pr->throttling);
cpus_and(online_throttling_cpus, cpu_online_map,
p_throttling->shared_cpu_map);
cpumask_and(online_throttling_cpus, cpu_online_mask,
p_throttling->shared_cpu_map);
/*
* The throttling notifier will be called for every
* affected cpu in order to get one proper T-state.
* The notifier event is THROTTLING_PRECHANGE.
*/
for_each_cpu_mask_nr(i, online_throttling_cpus) {
for_each_cpu(i, online_throttling_cpus) {
t_state.cpu = i;
acpi_processor_throttling_notifier(THROTTLING_PRECHANGE,
&t_state);
@ -1025,7 +1044,8 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
* it can be called only for the cpu pointed by pr.
*/
if (p_throttling->shared_type == DOMAIN_COORD_TYPE_SW_ANY) {
set_cpus_allowed_ptr(current, &cpumask_of_cpu(pr->id));
/* FIXME: use work_on_cpu() */
set_cpus_allowed_ptr(current, cpumask_of(pr->id));
ret = p_throttling->acpi_processor_set_throttling(pr,
t_state.target_state);
} else {
@ -1034,7 +1054,7 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
* it is necessary to set T-state for every affected
* cpus.
*/
for_each_cpu_mask_nr(i, online_throttling_cpus) {
for_each_cpu(i, online_throttling_cpus) {
match_pr = per_cpu(processors, i);
/*
* If the pointer is invalid, we will report the
@ -1056,7 +1076,8 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
continue;
}
t_state.cpu = i;
set_cpus_allowed_ptr(current, &cpumask_of_cpu(i));
/* FIXME: use work_on_cpu() */
set_cpus_allowed_ptr(current, cpumask_of(i));
ret = match_pr->throttling.
acpi_processor_set_throttling(
match_pr, t_state.target_state);
@ -1068,13 +1089,16 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
* affected cpu to update the T-states.
* The notifier event is THROTTLING_POSTCHANGE
*/
for_each_cpu_mask_nr(i, online_throttling_cpus) {
for_each_cpu(i, online_throttling_cpus) {
t_state.cpu = i;
acpi_processor_throttling_notifier(THROTTLING_POSTCHANGE,
&t_state);
}
/* restore the previous state */
set_cpus_allowed_ptr(current, &saved_mask);
/* FIXME: use work_on_cpu() */
set_cpus_allowed_ptr(current, saved_mask);
free_cpumask_var(online_throttling_cpus);
free_cpumask_var(saved_mask);
return ret;
}
@ -1120,7 +1144,7 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
if (acpi_processor_get_tsd(pr)) {
pthrottling = &pr->throttling;
pthrottling->tsd_valid_flag = 0;
cpu_set(pr->id, pthrottling->shared_cpu_map);
cpumask_set_cpu(pr->id, pthrottling->shared_cpu_map);
pthrottling->shared_type = DOMAIN_COORD_TYPE_SW_ALL;
}

44
drivers/base/cpu.c
View file

@ -128,10 +128,54 @@ print_cpus_func(online);
print_cpus_func(possible);
print_cpus_func(present);
/*
* Print values for NR_CPUS and offlined cpus
*/
static ssize_t print_cpus_kernel_max(struct sysdev_class *class, char *buf)
{
int n = snprintf(buf, PAGE_SIZE-2, "%d\n", NR_CPUS - 1);
return n;
}
static SYSDEV_CLASS_ATTR(kernel_max, 0444, print_cpus_kernel_max, NULL);
/* arch-optional setting to enable display of offline cpus >= nr_cpu_ids */
unsigned int total_cpus;
static ssize_t print_cpus_offline(struct sysdev_class *class, char *buf)
{
int n = 0, len = PAGE_SIZE-2;
cpumask_var_t offline;
/* display offline cpus < nr_cpu_ids */
if (!alloc_cpumask_var(&offline, GFP_KERNEL))
return -ENOMEM;
cpumask_complement(offline, cpu_online_mask);
n = cpulist_scnprintf(buf, len, offline);
free_cpumask_var(offline);
/* display offline cpus >= nr_cpu_ids */
if (total_cpus && nr_cpu_ids < total_cpus) {
if (n && n < len)
buf[n++] = ',';
if (nr_cpu_ids == total_cpus-1)
n += snprintf(&buf[n], len - n, "%d", nr_cpu_ids);
else
n += snprintf(&buf[n], len - n, "%d-%d",
nr_cpu_ids, total_cpus-1);
}
n += snprintf(&buf[n], len - n, "\n");
return n;
}
static SYSDEV_CLASS_ATTR(offline, 0444, print_cpus_offline, NULL);
static struct sysdev_class_attribute *cpu_state_attr[] = {
&attr_online_map,
&attr_possible_map,
&attr_present_map,
&attr_kernel_max,
&attr_offline,
};
static int cpu_states_init(void)

17
drivers/infiniband/hw/ehca/ehca_irq.c
View file

@ -659,12 +659,12 @@ static inline int find_next_online_cpu(struct ehca_comp_pool *pool)
WARN_ON_ONCE(!in_interrupt());
if (ehca_debug_level >= 3)
ehca_dmp(&cpu_online_map, sizeof(cpumask_t), "");
ehca_dmp(cpu_online_mask, cpumask_size(), "");
spin_lock_irqsave(&pool->last_cpu_lock, flags);
cpu = next_cpu_nr(pool->last_cpu, cpu_online_map);
cpu = cpumask_next(pool->last_cpu, cpu_online_mask);
if (cpu >= nr_cpu_ids)
cpu = first_cpu(cpu_online_map);
cpu = cpumask_first(cpu_online_mask);
pool->last_cpu = cpu;
spin_unlock_irqrestore(&pool->last_cpu_lock, flags);
@ -855,7 +855,7 @@ static int __cpuinit comp_pool_callback(struct notifier_block *nfb,
case CPU_UP_CANCELED_FROZEN:
ehca_gen_dbg("CPU: %x (CPU_CANCELED)", cpu);
cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu);
kthread_bind(cct->task, any_online_cpu(cpu_online_map));
kthread_bind(cct->task, cpumask_any(cpu_online_mask));
destroy_comp_task(pool, cpu);
break;
case CPU_ONLINE:
@ -902,7 +902,7 @@ int ehca_create_comp_pool(void)
return -ENOMEM;
spin_lock_init(&pool->last_cpu_lock);
pool->last_cpu = any_online_cpu(cpu_online_map);
pool->last_cpu = cpumask_any(cpu_online_mask);
pool->cpu_comp_tasks = alloc_percpu(struct ehca_cpu_comp_task);
if (pool->cpu_comp_tasks == NULL) {
@ -934,10 +934,9 @@ void ehca_destroy_comp_pool(void)
unregister_hotcpu_notifier(&comp_pool_callback_nb);
for (i = 0; i < NR_CPUS; i++) {
if (cpu_online(i))
destroy_comp_task(pool, i);
}
for_each_online_cpu(i)
destroy_comp_task(pool, i);
free_percpu(pool->cpu_comp_tasks);
kfree(pool);
}

8
drivers/infiniband/hw/ipath/ipath_file_ops.c
View file

@ -1679,7 +1679,7 @@ static int find_best_unit(struct file *fp,
* InfiniPath chip to that processor (we assume reasonable connectivity,
* for now). This code assumes that if affinity has been set
* before this point, that at most one cpu is set; for now this
* is reasonable. I check for both cpus_empty() and cpus_full(),
* is reasonable. I check for both cpumask_empty() and cpumask_full(),
* in case some kernel variant sets none of the bits when no
* affinity is set. 2.6.11 and 12 kernels have all present
* cpus set. Some day we'll have to fix it up further to handle
@ -1688,11 +1688,11 @@ static int find_best_unit(struct file *fp,
* information. There may be some issues with dual core numbering
* as well. This needs more work prior to release.
*/
if (!cpus_empty(current->cpus_allowed) &&
!cpus_full(current->cpus_allowed)) {
if (!cpumask_empty(&current->cpus_allowed) &&
!cpumask_full(&current->cpus_allowed)) {
int ncpus = num_online_cpus(), curcpu = -1, nset = 0;
for (i = 0; i < ncpus; i++)
if (cpu_isset(i, current->cpus_allowed)) {
if (cpumask_test_cpu(i, &current->cpus_allowed)) {
ipath_cdbg(PROC, "%s[%u] affinity set for "
"cpu %d/%d\n", current->comm,
current->pid, i, ncpus);

2
drivers/pnp/pnpbios/bioscalls.c
View file

@ -481,7 +481,7 @@ void pnpbios_calls_init(union pnp_bios_install_struct *header)
set_base(bad_bios_desc, __va((unsigned long)0x40 << 4));
_set_limit((char *)&bad_bios_desc, 4095 - (0x40 << 4));
for (i = 0; i < NR_CPUS; i++) {
for_each_possible_cpu(i) {
struct desc_struct *gdt = get_cpu_gdt_table(i);
if (!gdt)
continue;