[ERD][RAMEN9610-20347]ANDROID: cpufreq: Add time_in_state to /proc/uid directories

Add per-uid files that report the data in binary format rather than
text, to allow faster reading & parsing by userspace.

Signed-off-by: Connor O'Brien <connoro@google.com>
Bug: 72339335
Bug: 70951257
Test: compare values to those reported in /proc/uid_time_in_state
Change-Id: I463039ea7f17b842be4c70024fe772539fe2ce02

diff --git a/drivers/cpufreq/cpufreq_times.c b/drivers/cpufreq/cpufreq_times.c
index 7af834c65966989e95a908c8a9ce54a735c0b442..bf333cd7ba10b16880aa4d5b8e0a4b2328f8a61c 100644 (file)
--- a/drivers/cpufreq/cpufreq_times.c
+++ b/drivers/cpufreq/cpufreq_times.c
@@ -220,8 +220,8 @@ static int uid_time_in_state_seq_show(struct seq_file *m, void *v)
                for (i = 0; i < uid_entry->max_state; ++i) {
                        if (freq_index_invalid(i))
                                continue;
-                       seq_printf(m, " %lu", (unsigned long)nsec_to_clock_t(
-                                          uid_entry->time_in_state[i]));
+                       time = nsec_to_clock_t(uid_entry->time_in_state[i]);
+                       seq_put_decimal_ull(m, " ", time);
                }
                if (uid_entry->max_state)
                        seq_putc(m, '\n');
@@ -231,6 +231,86 @@ static int uid_time_in_state_seq_show(struct seq_file *m, void *v)
        return 0;
 }
 
+static int concurrent_time_seq_show(struct seq_file *m, void *v,
+               atomic64_t *(*get_times)(struct concurrent_times *))
+{
+       struct uid_entry *uid_entry;
+       int i, num_possible_cpus = num_possible_cpus();
+
+       rcu_read_lock();
+
+       hlist_for_each_entry_rcu(uid_entry, (struct hlist_head *)v, hash) {
+               atomic64_t *times = get_times(uid_entry->concurrent_times);
+
+               seq_put_decimal_ull(m, "", (u64)uid_entry->uid);
+               seq_putc(m, ':');
+
+               for (i = 0; i < num_possible_cpus; ++i) {
+                       u64 time = nsec_to_clock_t(atomic64_read(&times[i]));
+
+                       seq_put_decimal_ull(m, " ", time);
+               }
+               seq_putc(m, '\n');
+       }
+
+       rcu_read_unlock();
+
+       return 0;
+}
+
+static inline atomic64_t *get_active_times(struct concurrent_times *times)
+{
+       return times->active;
+}
+
+static int concurrent_active_time_seq_show(struct seq_file *m, void *v)
+{
+       if (v == uid_hash_table) {
+               seq_put_decimal_ull(m, "cpus: ", num_possible_cpus());
+               seq_putc(m, '\n');
+       }
+
+       return concurrent_time_seq_show(m, v, get_active_times);
+}
+
+static inline atomic64_t *get_policy_times(struct concurrent_times *times)
+{
+       return times->policy;
+}
+
+static int concurrent_policy_time_seq_show(struct seq_file *m, void *v)
+{
+       int i;
+       struct cpu_freqs *freqs, *last_freqs = NULL;
+
+       if (v == uid_hash_table) {
+               int cnt = 0;
+
+               for_each_possible_cpu(i) {
+                       freqs = all_freqs[i];
+                       if (!freqs)
+                               continue;
+                       if (freqs != last_freqs) {
+                               if (last_freqs) {
+                                       seq_put_decimal_ull(m, ": ", cnt);
+                                       seq_putc(m, ' ');
+                                       cnt = 0;
+                               }
+                               seq_put_decimal_ull(m, "policy", i);
+
+                               last_freqs = freqs;
+                       }
+                       cnt++;
+               }
+               if (last_freqs) {
+                       seq_put_decimal_ull(m, ": ", cnt);
+                       seq_putc(m, '\n');
+               }
+       }
+
+       return concurrent_time_seq_show(m, v, get_policy_times);
+}
+
 void cpufreq_task_times_init(struct task_struct *p)
 {
        unsigned long flags;