提交 f70316da 编写于 作者: M Mike Travis 提交者: Ingo Molnar

generic: use new set_cpus_allowed_ptr function

  * Use new set_cpus_allowed_ptr() function added by previous patch,
    which instead of passing the "newly allowed cpus" cpumask_t arg
    by value,  pass it by pointer:

    -int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask)
    +int set_cpus_allowed_ptr(struct task_struct *p, const cpumask_t *new_mask)

  * Modify CPU_MASK_ALL

Depends on:
	[sched-devel]: sched: add new set_cpus_allowed_ptr function
Signed-off-by: NMike Travis <travis@sgi.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
上级 fc0e4748
......@@ -838,10 +838,10 @@ static int acpi_processor_get_throttling(struct acpi_processor *pr)
* Migrate task to the cpu pointed by pr.
*/
saved_mask = current->cpus_allowed;
set_cpus_allowed(current, cpumask_of_cpu(pr->id));
set_cpus_allowed_ptr(current, &cpumask_of_cpu(pr->id));
ret = pr->throttling.acpi_processor_get_throttling(pr);
/* restore the previous state */
set_cpus_allowed(current, saved_mask);
set_cpus_allowed_ptr(current, &saved_mask);
return ret;
}
......@@ -1025,7 +1025,7 @@ 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(current, cpumask_of_cpu(pr->id));
set_cpus_allowed_ptr(current, &cpumask_of_cpu(pr->id));
ret = p_throttling->acpi_processor_set_throttling(pr,
t_state.target_state);
} else {
......@@ -1056,7 +1056,7 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
continue;
}
t_state.cpu = i;
set_cpus_allowed(current, cpumask_of_cpu(i));
set_cpus_allowed_ptr(current, &cpumask_of_cpu(i));
ret = match_pr->throttling.
acpi_processor_set_throttling(
match_pr, t_state.target_state);
......@@ -1074,7 +1074,7 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
&t_state);
}
/* restore the previous state */
set_cpus_allowed(current, saved_mask);
set_cpus_allowed_ptr(current, &saved_mask);
return ret;
}
......
......@@ -265,7 +265,7 @@ static int smi_request(struct smi_cmd *smi_cmd)
/* SMI requires CPU 0 */
old_mask = current->cpus_allowed;
set_cpus_allowed(current, cpumask_of_cpu(0));
set_cpus_allowed_ptr(current, &cpumask_of_cpu(0));
if (smp_processor_id() != 0) {
dev_dbg(&dcdbas_pdev->dev, "%s: failed to get CPU 0\n",
__FUNCTION__);
......@@ -285,7 +285,7 @@ static int smi_request(struct smi_cmd *smi_cmd)
);
out:
set_cpus_allowed(current, old_mask);
set_cpus_allowed_ptr(current, &old_mask);
return ret;
}
......
......@@ -182,15 +182,18 @@ static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev,
struct mempolicy *oldpol;
cpumask_t oldmask = current->cpus_allowed;
int node = pcibus_to_node(dev->bus);
if (node >= 0 && node_online(node))
set_cpus_allowed(current, node_to_cpumask(node));
if (node >= 0) {
node_to_cpumask_ptr(nodecpumask, node);
set_cpus_allowed_ptr(current, nodecpumask);
}
/* And set default memory allocation policy */
oldpol = current->mempolicy;
current->mempolicy = NULL; /* fall back to system default policy */
#endif
error = drv->probe(dev, id);
#ifdef CONFIG_NUMA
set_cpus_allowed(current, oldmask);
set_cpus_allowed_ptr(current, &oldmask);
current->mempolicy = oldpol;
#endif
return error;
......
......@@ -232,9 +232,9 @@ static int _cpu_down(unsigned int cpu, int tasks_frozen)
/* Ensure that we are not runnable on dying cpu */
old_allowed = current->cpus_allowed;
tmp = CPU_MASK_ALL;
cpus_setall(tmp);
cpu_clear(cpu, tmp);
set_cpus_allowed(current, tmp);
set_cpus_allowed_ptr(current, &tmp);
p = __stop_machine_run(take_cpu_down, &tcd_param, cpu);
......@@ -268,7 +268,7 @@ static int _cpu_down(unsigned int cpu, int tasks_frozen)
out_thread:
err = kthread_stop(p);
out_allowed:
set_cpus_allowed(current, old_allowed);
set_cpus_allowed_ptr(current, &old_allowed);
out_release:
cpu_hotplug_done();
return err;
......
......@@ -165,7 +165,7 @@ static int ____call_usermodehelper(void *data)
}
/* We can run anywhere, unlike our parent keventd(). */
set_cpus_allowed(current, CPU_MASK_ALL);
set_cpus_allowed_ptr(current, CPU_MASK_ALL_PTR);
/*
* Our parent is keventd, which runs with elevated scheduling priority.
......
......@@ -723,9 +723,10 @@ static int rcu_idle_cpu; /* Force all torture tasks off this CPU */
*/
static void rcu_torture_shuffle_tasks(void)
{
cpumask_t tmp_mask = CPU_MASK_ALL;
cpumask_t tmp_mask;
int i;
cpus_setall(tmp_mask);
get_online_cpus();
/* No point in shuffling if there is only one online CPU (ex: UP) */
......@@ -737,25 +738,27 @@ static void rcu_torture_shuffle_tasks(void)
if (rcu_idle_cpu != -1)
cpu_clear(rcu_idle_cpu, tmp_mask);
set_cpus_allowed(current, tmp_mask);
set_cpus_allowed_ptr(current, &tmp_mask);
if (reader_tasks) {
for (i = 0; i < nrealreaders; i++)
if (reader_tasks[i])
set_cpus_allowed(reader_tasks[i], tmp_mask);
set_cpus_allowed_ptr(reader_tasks[i],
&tmp_mask);
}
if (fakewriter_tasks) {
for (i = 0; i < nfakewriters; i++)
if (fakewriter_tasks[i])
set_cpus_allowed(fakewriter_tasks[i], tmp_mask);
set_cpus_allowed_ptr(fakewriter_tasks[i],
&tmp_mask);
}
if (writer_task)
set_cpus_allowed(writer_task, tmp_mask);
set_cpus_allowed_ptr(writer_task, &tmp_mask);
if (stats_task)
set_cpus_allowed(stats_task, tmp_mask);
set_cpus_allowed_ptr(stats_task, &tmp_mask);
if (rcu_idle_cpu == -1)
rcu_idle_cpu = num_online_cpus() - 1;
......
......@@ -35,7 +35,7 @@ static int stopmachine(void *cpu)
int irqs_disabled = 0;
int prepared = 0;
set_cpus_allowed(current, cpumask_of_cpu((int)(long)cpu));
set_cpus_allowed_ptr(current, &cpumask_of_cpu((int)(long)cpu));
/* Ack: we are alive */
smp_mb(); /* Theoretically the ack = 0 might not be on this CPU yet. */
......
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