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x86: use new set_cpus_allowed_ptr function

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* 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)

  * Cleanup uses of CPU_MASK_ALL.

  * Collapse other NR_CPUS changes to arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
    Use pointers to cpumask_t arguments whenever possible.

Depends on:
	[sched-devel]: sched: add new set_cpus_allowed_ptr function

Cc: Len Brown <len.brown@intel.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Mike Travis
2008-04-04 18:11:05 -07:00
committed by Ingo Molnar
parent 434d53b00d
commit fc0e474840
8 changed files with 61 additions and 58 deletions
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20
arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
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@@ -229,22 +229,22 @@ static unsigned int speedstep_detect_chipset (void)
return 0;
}
static unsigned int _speedstep_get(cpumask_t cpus)
static unsigned int _speedstep_get(const cpumask_t *cpus)
{
unsigned int speed;
cpumask_t cpus_allowed;
cpus_allowed = current->cpus_allowed;
set_cpus_allowed(current, cpus);
set_cpus_allowed_ptr(current, cpus);
speed = speedstep_get_processor_frequency(speedstep_processor);
set_cpus_allowed(current, cpus_allowed);
set_cpus_allowed_ptr(current, &cpus_allowed);
dprintk("detected %u kHz as current frequency\n", speed);
return speed;
}
static unsigned int speedstep_get(unsigned int cpu)
{
return _speedstep_get(cpumask_of_cpu(cpu));
return _speedstep_get(&cpumask_of_cpu(cpu));
}
/**
@@ -267,7 +267,7 @@ static int speedstep_target (struct cpufreq_policy *policy,
if (cpufreq_frequency_table_target(policy, &speedstep_freqs[0], target_freq, relation, &newstate))
return -EINVAL;
freqs.old = _speedstep_get(policy->cpus);
freqs.old = _speedstep_get(&policy->cpus);
freqs.new = speedstep_freqs[newstate].frequency;
freqs.cpu = policy->cpu;
@@ -285,12 +285,12 @@ static int speedstep_target (struct cpufreq_policy *policy,
}
/* switch to physical CPU where state is to be changed */
set_cpus_allowed(current, policy->cpus);
set_cpus_allowed_ptr(current, &policy->cpus);
speedstep_set_state(newstate);
/* allow to be run on all CPUs */
set_cpus_allowed(current, cpus_allowed);
set_cpus_allowed_ptr(current, &cpus_allowed);
for_each_cpu_mask(i, policy->cpus) {
freqs.cpu = i;
@@ -326,7 +326,7 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
#endif
cpus_allowed = current->cpus_allowed;
set_cpus_allowed(current, policy->cpus);
set_cpus_allowed_ptr(current, &policy->cpus);
/* detect low and high frequency and transition latency */
result = speedstep_get_freqs(speedstep_processor,
@@ -334,12 +334,12 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
&speedstep_freqs[SPEEDSTEP_HIGH].frequency,
&policy->cpuinfo.transition_latency,
&speedstep_set_state);
set_cpus_allowed(current, cpus_allowed);
set_cpus_allowed_ptr(current, &cpus_allowed);
if (result)
return result;
/* get current speed setting */
speed = _speedstep_get(policy->cpus);
speed = _speedstep_get(&policy->cpus);
if (!speed)
return -EIO;