42 static inline struct cpuacct *parent_ca(struct cpuacct *ca)  in parent_ca()  argument
44 	return css_ca(ca->css.parent);  in parent_ca()
57 	struct cpuacct *ca;  in cpuacct_css_alloc()  local
62 	ca = kzalloc(sizeof(*ca), GFP_KERNEL);  in cpuacct_css_alloc()
63 	if (!ca)  in cpuacct_css_alloc()
66 	ca->cpuusage = alloc_percpu(u64);  in cpuacct_css_alloc()
67 	if (!ca->cpuusage)  in cpuacct_css_alloc()
70 	ca->cpustat = alloc_percpu(struct kernel_cpustat);  in cpuacct_css_alloc()
71 	if (!ca->cpustat)  in cpuacct_css_alloc()
74 	return &ca->css;  in cpuacct_css_alloc()
77 	free_percpu(ca->cpuusage);  in cpuacct_css_alloc()
79 	kfree(ca);  in cpuacct_css_alloc()
87 	struct cpuacct *ca = css_ca(css);  in cpuacct_css_free()  local
89 	free_percpu(ca->cpustat);  in cpuacct_css_free()
90 	free_percpu(ca->cpuusage);  in cpuacct_css_free()
91 	kfree(ca);  in cpuacct_css_free()
94 static u64 cpuacct_cpuusage_read(struct cpuacct *ca, int cpu,  in cpuacct_cpuusage_read()  argument
97 	u64 *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);  in cpuacct_cpuusage_read()
98 	u64 *cpustat = per_cpu_ptr(ca->cpustat, cpu)->cpustat;  in cpuacct_cpuusage_read()
135 static void cpuacct_cpuusage_write(struct cpuacct *ca, int cpu)  in cpuacct_cpuusage_write()  argument
137 	u64 *cpuusage = per_cpu_ptr(ca->cpuusage, cpu);  in cpuacct_cpuusage_write()
138 	u64 *cpustat = per_cpu_ptr(ca->cpustat, cpu)->cpustat;  in cpuacct_cpuusage_write()
141 	if (ca == &root_cpuacct)  in cpuacct_cpuusage_write()
164 	struct cpuacct *ca = css_ca(css);  in __cpuusage_read()  local
169 		totalcpuusage += cpuacct_cpuusage_read(ca, i, index);  in __cpuusage_read()
194 	struct cpuacct *ca = css_ca(css);  in cpuusage_write()  local
204 		cpuacct_cpuusage_write(ca, cpu);  in cpuusage_write()
212 	struct cpuacct *ca = css_ca(seq_css(m));  in __cpuacct_percpu_seq_show()  local
217 		percpu = cpuacct_cpuusage_read(ca, i, index);  in __cpuacct_percpu_seq_show()
241 	struct cpuacct *ca = css_ca(seq_css(m));  in cpuacct_all_seq_show()  local
254 				   cpuacct_cpuusage_read(ca, cpu, index));  in cpuacct_all_seq_show()
262 	struct cpuacct *ca = css_ca(seq_css(sf));  in cpuacct_stats_show()  local
270 		u64 *cpustat = per_cpu_ptr(ca->cpustat, cpu)->cpustat;  in cpuacct_stats_show()
278 		cputime.sum_exec_runtime += *per_cpu_ptr(ca->cpuusage, cpu);  in cpuacct_stats_show()
337 	struct cpuacct *ca;  in cpuacct_charge()  local
341 	for (ca = task_ca(tsk); ca; ca = parent_ca(ca))  in cpuacct_charge()
342 		*per_cpu_ptr(ca->cpuusage, cpu) += cputime;  in cpuacct_charge()
352 	struct cpuacct *ca;  in cpuacct_account_field()  local
354 	for (ca = task_ca(tsk); ca != &root_cpuacct; ca = parent_ca(ca))  in cpuacct_account_field()
355 		__this_cpu_add(ca->cpustat->cpustat[index], val);  in cpuacct_account_field()