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sched/cpuacct: Merge cpuacct_usage_index and cpuacct_stat_index enums

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These two types have similar function, no need to separate them.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/436748885270d64363c7dc67167507d486c2057a.1466415271.git.zhaolei@cn.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Zhao Lei 2016-06-20 17:37:18 +08:00 committed by Ingo Molnar
parent 55e16d30bd
commit 9acacc2ac5
1 changed files with 20 additions and 27 deletions
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47
kernel/sched/cpuacct.c
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@ -25,15 +25,13 @@ enum cpuacct_stat_index {
CPUACCT_STAT_NSTATS,
};
enum cpuacct_usage_index {
CPUACCT_USAGE_USER, /* ... user mode */
CPUACCT_USAGE_SYSTEM, /* ... kernel mode */
CPUACCT_USAGE_NRUSAGE,
static const char * const cpuacct_stat_desc[] = {
[CPUACCT_STAT_USER] = "user",
[CPUACCT_STAT_SYSTEM] = "system",
};
struct cpuacct_usage {
u64 usages[CPUACCT_USAGE_NRUSAGE];
u64 usages[CPUACCT_STAT_NSTATS];
};
/* track cpu usage of a group of tasks and its child groups */
@ -108,16 +106,16 @@ static void cpuacct_css_free(struct cgroup_subsys_state *css)
}
static u64 cpuacct_cpuusage_read(struct cpuacct *ca, int cpu,
enum cpuacct_usage_index index)
enum cpuacct_stat_index index)
{
struct cpuacct_usage *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);
u64 data;
/*
* We allow index == CPUACCT_USAGE_NRUSAGE here to read
* We allow index == CPUACCT_STAT_NSTATS here to read
* the sum of suages.
*/
BUG_ON(index > CPUACCT_USAGE_NRUSAGE);
BUG_ON(index > CPUACCT_STAT_NSTATS);
#ifndef CONFIG_64BIT
/*
@ -126,11 +124,11 @@ static u64 cpuacct_cpuusage_read(struct cpuacct *ca, int cpu,
raw_spin_lock_irq(&cpu_rq(cpu)->lock);
#endif
if (index == CPUACCT_USAGE_NRUSAGE) {
if (index == CPUACCT_STAT_NSTATS) {
int i = 0;
data = 0;
for (i = 0; i < CPUACCT_USAGE_NRUSAGE; i++)
for (i = 0; i < CPUACCT_STAT_NSTATS; i++)
data += cpuusage->usages[i];
} else {
data = cpuusage->usages[index];
@ -155,7 +153,7 @@ static void cpuacct_cpuusage_write(struct cpuacct *ca, int cpu, u64 val)
raw_spin_lock_irq(&cpu_rq(cpu)->lock);
#endif
for (i = 0; i < CPUACCT_USAGE_NRUSAGE; i++)
for (i = 0; i < CPUACCT_STAT_NSTATS; i++)
cpuusage->usages[i] = val;
#ifndef CONFIG_64BIT
@ -165,7 +163,7 @@ static void cpuacct_cpuusage_write(struct cpuacct *ca, int cpu, u64 val)
/* return total cpu usage (in nanoseconds) of a group */
static u64 __cpuusage_read(struct cgroup_subsys_state *css,
enum cpuacct_usage_index index)
enum cpuacct_stat_index index)
{
struct cpuacct *ca = css_ca(css);
u64 totalcpuusage = 0;
@ -180,18 +178,18 @@ static u64 __cpuusage_read(struct cgroup_subsys_state *css,
static u64 cpuusage_user_read(struct cgroup_subsys_state *css,
struct cftype *cft)
{
return __cpuusage_read(css, CPUACCT_USAGE_USER);
return __cpuusage_read(css, CPUACCT_STAT_USER);
}
static u64 cpuusage_sys_read(struct cgroup_subsys_state *css,
struct cftype *cft)
{
return __cpuusage_read(css, CPUACCT_USAGE_SYSTEM);
return __cpuusage_read(css, CPUACCT_STAT_SYSTEM);
}
static u64 cpuusage_read(struct cgroup_subsys_state *css, struct cftype *cft)
{
return __cpuusage_read(css, CPUACCT_USAGE_NRUSAGE);
return __cpuusage_read(css, CPUACCT_STAT_NSTATS);
}
static int cpuusage_write(struct cgroup_subsys_state *css, struct cftype *cft,
@ -213,7 +211,7 @@ static int cpuusage_write(struct cgroup_subsys_state *css, struct cftype *cft,
}
static int __cpuacct_percpu_seq_show(struct seq_file *m,
enum cpuacct_usage_index index)
enum cpuacct_stat_index index)
{
struct cpuacct *ca = css_ca(seq_css(m));
u64 percpu;
@ -229,24 +227,19 @@ static int __cpuacct_percpu_seq_show(struct seq_file *m,
static int cpuacct_percpu_user_seq_show(struct seq_file *m, void *V)
{
return __cpuacct_percpu_seq_show(m, CPUACCT_USAGE_USER);
return __cpuacct_percpu_seq_show(m, CPUACCT_STAT_USER);
}
static int cpuacct_percpu_sys_seq_show(struct seq_file *m, void *V)
{
return __cpuacct_percpu_seq_show(m, CPUACCT_USAGE_SYSTEM);
return __cpuacct_percpu_seq_show(m, CPUACCT_STAT_SYSTEM);
}
static int cpuacct_percpu_seq_show(struct seq_file *m, void *V)
{
return __cpuacct_percpu_seq_show(m, CPUACCT_USAGE_NRUSAGE);
return __cpuacct_percpu_seq_show(m, CPUACCT_STAT_NSTATS);
}
static const char * const cpuacct_stat_desc[] = {
[CPUACCT_STAT_USER] = "user",
[CPUACCT_STAT_SYSTEM] = "system",
};
static int cpuacct_stats_show(struct seq_file *sf, void *v)
{
struct cpuacct *ca = css_ca(seq_css(sf));
@ -316,11 +309,11 @@ static struct cftype files[] = {
void cpuacct_charge(struct task_struct *tsk, u64 cputime)
{
struct cpuacct *ca;
int index = CPUACCT_USAGE_SYSTEM;
int index = CPUACCT_STAT_SYSTEM;
struct pt_regs *regs = task_pt_regs(tsk);
if (regs && user_mode(regs))
index = CPUACCT_USAGE_USER;
index = CPUACCT_STAT_USER;
rcu_read_lock();