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path: root/drivers/acpi/processor_throttling.c
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Diffstat (limited to 'drivers/acpi/processor_throttling.c')
-rw-r--r--drivers/acpi/processor_throttling.c80
1 files changed, 52 insertions, 28 deletions
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index a0c38c94a8a..d27838171f4 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -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;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 05:56:45 +0000