46 static inline struct cpuacct *parent_ca(struct cpuacct *ca)  in parent_ca()  argument
48 	return css_ca(ca->css.parent);  in parent_ca()
61 	struct cpuacct *ca;  in cpuacct_css_alloc()  local
66 	ca = kzalloc(sizeof(*ca), GFP_KERNEL);  in cpuacct_css_alloc()
67 	if (!ca)  in cpuacct_css_alloc()
70 	ca->cpuusage = alloc_percpu(struct cpuacct_usage);  in cpuacct_css_alloc()
71 	if (!ca->cpuusage)  in cpuacct_css_alloc()
74 	ca->cpustat = alloc_percpu(struct kernel_cpustat);  in cpuacct_css_alloc()
75 	if (!ca->cpustat)  in cpuacct_css_alloc()
78 	return &ca->css;  in cpuacct_css_alloc()
81 	free_percpu(ca->cpuusage);  in cpuacct_css_alloc()
83 	kfree(ca);  in cpuacct_css_alloc()
91 	struct cpuacct *ca = css_ca(css);  in cpuacct_css_free()  local
93 	free_percpu(ca->cpustat);  in cpuacct_css_free()
94 	free_percpu(ca->cpuusage);  in cpuacct_css_free()
95 	kfree(ca);  in cpuacct_css_free()
98 static u64 cpuacct_cpuusage_read(struct cpuacct *ca, int cpu,  in cpuacct_cpuusage_read()  argument
101 	struct cpuacct_usage *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);  in cpuacct_cpuusage_read()
134 static void cpuacct_cpuusage_write(struct cpuacct *ca, int cpu, u64 val)  in cpuacct_cpuusage_write()  argument
136 	struct cpuacct_usage *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);  in cpuacct_cpuusage_write()
158 	struct cpuacct *ca = css_ca(css);  in __cpuusage_read()  local
163 		totalcpuusage += cpuacct_cpuusage_read(ca, i, index);  in __cpuusage_read()
188 	struct cpuacct *ca = css_ca(css);  in cpuusage_write()  local
198 		cpuacct_cpuusage_write(ca, cpu, 0);  in cpuusage_write()
206 	struct cpuacct *ca = css_ca(seq_css(m));  in __cpuacct_percpu_seq_show()  local
211 		percpu = cpuacct_cpuusage_read(ca, i, index);  in __cpuacct_percpu_seq_show()
235 	struct cpuacct *ca = css_ca(seq_css(m));  in cpuacct_all_seq_show()  local
245 		struct cpuacct_usage *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);  in cpuacct_all_seq_show()
271 	struct cpuacct *ca = css_ca(seq_css(sf));  in cpuacct_stats_show()  local
278 		u64 *cpustat = per_cpu_ptr(ca->cpustat, cpu)->cpustat;  in cpuacct_stats_show()
340 	struct cpuacct *ca;  in cpuacct_charge()  local
349 	for (ca = task_ca(tsk); ca; ca = parent_ca(ca))  in cpuacct_charge()
350 		this_cpu_ptr(ca->cpuusage)->usages[index] += cputime;  in cpuacct_charge()
362 	struct cpuacct *ca;  in cpuacct_account_field()  local
365 	for (ca = task_ca(tsk); ca != &root_cpuacct; ca = parent_ca(ca))  in cpuacct_account_field()
366 		this_cpu_ptr(ca->cpustat)->cpustat[index] += val;  in cpuacct_account_field()