From: Tejun Heo <tj@xxxxxxxxxx>
Make the following changes in preparation for the cpu controller
interface implementation for the unified hierarchy. This patch
doesn't cause any functional differences.
* s/cpu_stats_show()/cpu_cfs_stats_show()/
* s/cpu_files/cpu_legacy_files/
* Separate out cpuacct_stats_read() from cpuacct_stats_show(). While
at it, make the @val array u64 for consistency.
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Li Zefan <lizefan@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
---
kernel/sched/core.c | 8 ++++----
kernel/sched/cpuacct.c | 29 ++++++++++++++++++-----------
2 files changed, 22 insertions(+), 15 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index c888bd3..be2527b 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -7230,7 +7230,7 @@ static int __cfs_schedulable(struct task_group *tg, u64 period, u64 quota)
return ret;
}
-static int cpu_stats_show(struct seq_file *sf, void *v)
+static int cpu_cfs_stats_show(struct seq_file *sf, void *v)
{
struct task_group *tg = css_tg(seq_css(sf));
struct cfs_bandwidth *cfs_b = &tg->cfs_bandwidth;
@@ -7270,7 +7270,7 @@ static u64 cpu_rt_period_read_uint(struct cgroup_subsys_state *css,
}
#endif /* CONFIG_RT_GROUP_SCHED */
-static struct cftype cpu_files[] = {
+static struct cftype cpu_legacy_files[] = {
#ifdef CONFIG_FAIR_GROUP_SCHED
{
.name = "shares",
@@ -7291,7 +7291,7 @@ static u64 cpu_rt_period_read_uint(struct cgroup_subsys_state *css,
},
{
.name = "stat",
- .seq_show = cpu_stats_show,
+ .seq_show = cpu_cfs_stats_show,
},
#endif
#ifdef CONFIG_RT_GROUP_SCHED
@@ -7317,7 +7317,7 @@ struct cgroup_subsys cpu_cgrp_subsys = {
.fork = cpu_cgroup_fork,
.can_attach = cpu_cgroup_can_attach,
.attach = cpu_cgroup_attach,
- .legacy_cftypes = cpu_files,
+ .legacy_cftypes = cpu_legacy_files,
.early_init = true,
};
diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c
index f95ab29..6151c23 100644
--- a/kernel/sched/cpuacct.c
+++ b/kernel/sched/cpuacct.c
@@ -276,26 +276,33 @@ static int cpuacct_all_seq_show(struct seq_file *m, void *V)
return 0;
}
-static int cpuacct_stats_show(struct seq_file *sf, void *v)
+static void cpuacct_stats_read(struct cpuacct *ca,
+ u64 (*val)[CPUACCT_STAT_NSTATS])
{
- struct cpuacct *ca = css_ca(seq_css(sf));
- s64 val[CPUACCT_STAT_NSTATS];
int cpu;
- int stat;
- memset(val, 0, sizeof(val));
+ memset(val, 0, sizeof(*val));
+
for_each_possible_cpu(cpu) {
u64 *cpustat = per_cpu_ptr(ca->cpustat, cpu)->cpustat;
- val[CPUACCT_STAT_USER] += cpustat[CPUTIME_USER];
- val[CPUACCT_STAT_USER] += cpustat[CPUTIME_NICE];
- val[CPUACCT_STAT_SYSTEM] += cpustat[CPUTIME_SYSTEM];
- val[CPUACCT_STAT_SYSTEM] += cpustat[CPUTIME_IRQ];
- val[CPUACCT_STAT_SYSTEM] += cpustat[CPUTIME_SOFTIRQ];
+ (*val)[CPUACCT_STAT_USER] += cpustat[CPUTIME_USER];
+ (*val)[CPUACCT_STAT_USER] += cpustat[CPUTIME_NICE];
+ (*val)[CPUACCT_STAT_SYSTEM] += cpustat[CPUTIME_SYSTEM];
+ (*val)[CPUACCT_STAT_SYSTEM] += cpustat[CPUTIME_IRQ];
+ (*val)[CPUACCT_STAT_SYSTEM] += cpustat[CPUTIME_SOFTIRQ];
}
+}
+
+static int cpuacct_stats_show(struct seq_file *sf, void *v)
+{
+ u64 val[CPUACCT_STAT_NSTATS];
+ int stat;
+
+ cpuacct_stats_read(css_ca(seq_css(sf)), &val);
for (stat = 0; stat < CPUACCT_STAT_NSTATS; stat++) {
- seq_printf(sf, "%s %lld\n",
+ seq_printf(sf, "%s %llu\n",
cpuacct_stat_desc[stat],
(long long)nsec_to_clock_t(val[stat]));
}
--
1.8.3.1
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