47 static inline struct cpuacct *parent_ca(struct cpuacct *ca)  in parent_ca()  argument
49 	return css_ca(ca->css.parent);  in parent_ca()
62 	struct cpuacct *ca;  in cpuacct_css_alloc()  local
67 	ca = kzalloc(sizeof(*ca), GFP_KERNEL);  in cpuacct_css_alloc()
68 	if (!ca)  in cpuacct_css_alloc()
71 	ca->cpuusage = alloc_percpu(u64);  in cpuacct_css_alloc()
72 	if (!ca->cpuusage)  in cpuacct_css_alloc()
75 	ca->cpustat = alloc_percpu(struct kernel_cpustat);  in cpuacct_css_alloc()
76 	if (!ca->cpustat)  in cpuacct_css_alloc()
79 	return &ca->css;  in cpuacct_css_alloc()
82 	free_percpu(ca->cpuusage);  in cpuacct_css_alloc()
84 	kfree(ca);  in cpuacct_css_alloc()
92 	struct cpuacct *ca = css_ca(css);  in cpuacct_css_free()  local
94 	free_percpu(ca->cpustat);  in cpuacct_css_free()
95 	free_percpu(ca->cpuusage);  in cpuacct_css_free()
96 	kfree(ca);  in cpuacct_css_free()
99 static u64 cpuacct_cpuusage_read(struct cpuacct *ca, int cpu)  in cpuacct_cpuusage_read()  argument
101 	u64 *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);  in cpuacct_cpuusage_read()
118 static void cpuacct_cpuusage_write(struct cpuacct *ca, int cpu, u64 val)  in cpuacct_cpuusage_write()  argument
120 	u64 *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);  in cpuacct_cpuusage_write()
137 	struct cpuacct *ca = css_ca(css);  in cpuusage_read()  local
142 		totalcpuusage += cpuacct_cpuusage_read(ca, i);  in cpuusage_read()
150 	struct cpuacct *ca = css_ca(css);  in cpuusage_write()  local
160 		cpuacct_cpuusage_write(ca, i, 0);  in cpuusage_write()
168 	struct cpuacct *ca = css_ca(seq_css(m));  in cpuacct_percpu_seq_show()  local
173 		percpu = cpuacct_cpuusage_read(ca, i);  in cpuacct_percpu_seq_show()
187 	struct cpuacct *ca = css_ca(seq_css(sf));  in cpuacct_stats_show()  local
192 		struct kernel_cpustat *kcpustat = per_cpu_ptr(ca->cpustat, cpu);  in cpuacct_stats_show()
201 		struct kernel_cpustat *kcpustat = per_cpu_ptr(ca->cpustat, cpu);  in cpuacct_stats_show()
237 	struct cpuacct *ca;  in cpuacct_charge()  local
244 	ca = task_ca(tsk);  in cpuacct_charge()
247 		u64 *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);  in cpuacct_charge()
250 		ca = parent_ca(ca);  in cpuacct_charge()
251 		if (!ca)  in cpuacct_charge()
266 	struct cpuacct *ca;  in cpuacct_account_field()  local
269 	ca = task_ca(p);  in cpuacct_account_field()
270 	while (ca != &root_cpuacct) {  in cpuacct_account_field()
271 		kcpustat = this_cpu_ptr(ca->cpustat);  in cpuacct_account_field()
273 		ca = parent_ca(ca);  in cpuacct_account_field()