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cgroup, sched: convert away from cftype->read_map()

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In preparation of conversion to kernfs, cgroup file handling is being
consolidated so that it can be easily mapped to the seq_file based
interface of kernfs.

cftype->read_map() doesn't add any value and being replaced with
->read_seq_string().  Update cpu_stats_show() and cpuacct_stats_show()
accordingly.

This patch doesn't make any visible behavior changes.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
This commit is contained in:
Tejun Heo 2013-12-05 12:28:01 -05:00
parent afb2bc14e1
commit 44ffc75ba9
2 changed files with 9 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
kernel/sched/core.c
View File

@ -7257,14 +7257,14 @@ static int __cfs_schedulable(struct task_group *tg, u64 period, u64 quota)
}
static int cpu_stats_show(struct cgroup_subsys_state *css, struct cftype *cft,
struct cgroup_map_cb *cb)
struct seq_file *sf)
{
struct task_group *tg = css_tg(css);
struct cfs_bandwidth *cfs_b = &tg->cfs_bandwidth;
cb->fill(cb, "nr_periods", cfs_b->nr_periods);
cb->fill(cb, "nr_throttled", cfs_b->nr_throttled);
cb->fill(cb, "throttled_time", cfs_b->throttled_time);
seq_printf(sf, "nr_periods %d\n", cfs_b->nr_periods);
seq_printf(sf, "nr_throttled %d\n", cfs_b->nr_throttled);
seq_printf(sf, "throttled_time %llu\n", cfs_b->throttled_time);
return 0;
}
@ -7318,7 +7318,7 @@ static struct cftype cpu_files[] = {
},
{
.name = "stat",
.read_map = cpu_stats_show,
.read_seq_string = cpu_stats_show,
},
#endif
#ifdef CONFIG_RT_GROUP_SCHED

8
kernel/sched/cpuacct.c
View File

@ -184,7 +184,7 @@ static const char * const cpuacct_stat_desc[] = {
};
static int cpuacct_stats_show(struct cgroup_subsys_state *css,
struct cftype *cft, struct cgroup_map_cb *cb)
struct cftype *cft, struct seq_file *sf)
{
struct cpuacct *ca = css_ca(css);
int cpu;
@ -196,7 +196,7 @@ static int cpuacct_stats_show(struct cgroup_subsys_state *css,
val += kcpustat->cpustat[CPUTIME_NICE];
}
val = cputime64_to_clock_t(val);
cb->fill(cb, cpuacct_stat_desc[CPUACCT_STAT_USER], val);
seq_printf(sf, "%s %lld\n", cpuacct_stat_desc[CPUACCT_STAT_USER], val);
val = 0;
for_each_online_cpu(cpu) {
@ -207,7 +207,7 @@ static int cpuacct_stats_show(struct cgroup_subsys_state *css,
}
val = cputime64_to_clock_t(val);
cb->fill(cb, cpuacct_stat_desc[CPUACCT_STAT_SYSTEM], val);
seq_printf(sf, "%s %lld\n", cpuacct_stat_desc[CPUACCT_STAT_SYSTEM], val);
return 0;
}
@ -224,7 +224,7 @@ static struct cftype files[] = {
},
{
.name = "stat",
.read_map = cpuacct_stats_show,
.read_seq_string = cpuacct_stats_show,
},
{ } /* terminate */
};