static void *pcpu_seq_start(struct seq_file *sf, loff_t *pos)
{
unsigned long cpuno;
volatile int count;
struct stats *st;
if (*pos >= 1)
return NULL;
/* get the address of per-cpu data for current CPU
* and disable kernel preemption */
st = get_cpu_ptr(stats_ptr);
count = st->count;
pr_info("percpu: count before increase: %d\n", count);
count = count + 1;
pr_info("percpu: count after increase: %d\n", count);
st->count = count;
cpuno = smp_processor_id();
/* re-enable kernel preemption */
put_cpu_ptr(stats_ptr);
return (void *)((cpuno << 16) & count);
}
static struct cgroup_cpu_stat *cgroup_cpu_stat_account_begin(struct cgroup *cgrp)
{
struct cgroup_cpu_stat *cstat;
cstat = get_cpu_ptr(cgrp->cpu_stat);
u64_stats_update_begin(&cstat->sync);
return cstat;
}
struct zcomp_strm *zcomp_stream_get(struct zcomp *comp)
{
return *get_cpu_ptr(comp->stream);
}
