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alloc_percpu: change percpu_ptr to per_cpu_ptr

Browse source 
Impact: cleanup

There are two allocated per-cpu accessor macros with almost identical
spelling.  The original and far more popular is per_cpu_ptr (44
files), so change over the other 4 files.

tj: kill percpu_ptr() and update UP too

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: mingo@redhat.com
Cc: lenb@kernel.org
Cc: cpufreq@vger.kernel.org
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Rusty Russell 2009-02-20 16:29:08 +09:00 committed by Tejun Heo
parent 6b588c18f8
commit b36128c830
5 changed files with 18 additions and 19 deletions
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2
arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
View file

@ -601,7 +601,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
if (!data)
return -ENOMEM;
data->acpi_data = percpu_ptr(acpi_perf_data, cpu);
data->acpi_data = per_cpu_ptr(acpi_perf_data, cpu);
per_cpu(drv_data, cpu) = data;
if (cpu_has(c, X86_FEATURE_CONSTANT_TSC))

4
drivers/acpi/processor_perflib.c
View file

@ -516,12 +516,12 @@ int acpi_processor_preregister_performance(
continue;
}
if (!performance || !percpu_ptr(performance, i)) {
if (!performance || !per_cpu_ptr(performance, i)) {
retval = -EINVAL;
continue;
}
pr->performance = percpu_ptr(performance, i);
pr->performance = per_cpu_ptr(performance, i);
cpumask_set_cpu(i, pr->performance->shared_cpu_map);
if (acpi_processor_get_psd(pr)) {
retval = -EINVAL;

23
include/linux/percpu.h
View file

@ -81,23 +81,13 @@ struct percpu_data {
};
#define __percpu_disguise(pdata) (struct percpu_data *)~(unsigned long)(pdata)
/*
* Use this to get to a cpu's version of the per-cpu object dynamically
* allocated. Non-atomic access to the current CPU's version should
* probably be combined with get_cpu()/put_cpu().
*/
#define percpu_ptr(ptr, cpu) \
({ \
struct percpu_data *__p = __percpu_disguise(ptr); \
(__typeof__(ptr))__p->ptrs[(cpu)]; \
})
extern void *__percpu_alloc_mask(size_t size, gfp_t gfp, cpumask_t *mask);
extern void percpu_free(void *__pdata);
#else /* CONFIG_SMP */
#define percpu_ptr(ptr, cpu) ({ (void)(cpu); (ptr); })
#define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); (ptr); })
static __always_inline void *__percpu_alloc_mask(size_t size, gfp_t gfp, cpumask_t *mask)
{
@ -122,6 +112,15 @@ static inline void percpu_free(void *__pdata)
cpu_possible_map)
#define alloc_percpu(type) (type *)__alloc_percpu(sizeof(type))
#define free_percpu(ptr) percpu_free((ptr))
#define per_cpu_ptr(ptr, cpu) percpu_ptr((ptr), (cpu))
/*
* Use this to get to a cpu's version of the per-cpu object dynamically
* allocated. Non-atomic access to the current CPU's version should
* probably be combined with get_cpu()/put_cpu().
*/
#define per_cpu_ptr(ptr, cpu) \
({ \
struct percpu_data *__p = __percpu_disguise(ptr); \
(__typeof__(ptr))__p->ptrs[(cpu)]; \
})
#endif /* __LINUX_PERCPU_H */

6
kernel/sched.c
View file

@ -9472,7 +9472,7 @@ cpuacct_destroy(struct cgroup_subsys *ss, struct cgroup *cgrp)
static u64 cpuacct_cpuusage_read(struct cpuacct *ca, int cpu)
{
u64 *cpuusage = percpu_ptr(ca->cpuusage, cpu);
u64 *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);
u64 data;
#ifndef CONFIG_64BIT
@ -9491,7 +9491,7 @@ static u64 cpuacct_cpuusage_read(struct cpuacct *ca, int cpu)
static void cpuacct_cpuusage_write(struct cpuacct *ca, int cpu, u64 val)
{
u64 *cpuusage = percpu_ptr(ca->cpuusage, cpu);
u64 *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);
#ifndef CONFIG_64BIT
/*
@ -9587,7 +9587,7 @@ static void cpuacct_charge(struct task_struct *tsk, u64 cputime)
ca = task_ca(tsk);
for (; ca; ca = ca->parent) {
u64 *cpuusage = percpu_ptr(ca->cpuusage, cpu);
u64 *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);
*cpuusage += cputime;
}
}

2
kernel/stop_machine.c
View file

@ -170,7 +170,7 @@ int __stop_machine(int (*fn)(void *), void *data, const struct cpumask *cpus)
* doesn't hit this CPU until we're ready. */
get_cpu();
for_each_online_cpu(i) {
sm_work = percpu_ptr(stop_machine_work, i);
sm_work = per_cpu_ptr(stop_machine_work, i);
INIT_WORK(sm_work, stop_cpu);
queue_work_on(i, stop_machine_wq, sm_work);
}