#define WAKE_LOCK_AUTO_EXPIRE (1U << 10)
#define WAKE_LOCK_PREVENTING_SUSPEND (1U << 11)
-#define TOO_MAY_LOCKS_WARNING "\n\ntoo many wakelocks!!!\n"
-
static DEFINE_SPINLOCK(list_lock);
static LIST_HEAD(inactive_locks);
static struct list_head active_wake_locks[WAKE_LOCK_TYPE_COUNT];
}
-static int print_lock_stat(char *buf, int len, struct wake_lock *lock)
+static int print_lock_stat(char *buf, struct wake_lock *lock)
{
int lock_count = lock->stat.count;
int expire_count = lock->stat.expire_count;
ktime_t active_time = ktime_set(0, 0);
ktime_t total_time = lock->stat.total_time;
ktime_t max_time = lock->stat.max_time;
- int n;
-
ktime_t prevent_suspend_time = lock->stat.prevent_suspend_time;
if (lock->flags & WAKE_LOCK_ACTIVE) {
ktime_t now, add_time;
max_time = add_time;
}
- n = snprintf(buf, len,
- "\"%s\"\t%d\t%d\t%d\t%lld\t%lld\t%lld\t%lld\t%lld\n",
- lock->name, lock_count, expire_count,
- lock->stat.wakeup_count, ktime_to_ns(active_time),
- ktime_to_ns(total_time),
- ktime_to_ns(prevent_suspend_time), ktime_to_ns(max_time),
- ktime_to_ns(lock->stat.last_time));
-
- return n > len ? len : n;
+ return sprintf(buf, "\"%s\"\t%d\t%d\t%d\t%lld\t%lld\t%lld\t%lld\t"
+ "%lld\n", lock->name, lock_count, expire_count,
+ lock->stat.wakeup_count, ktime_to_ns(active_time),
+ ktime_to_ns(total_time),
+ ktime_to_ns(prevent_suspend_time), ktime_to_ns(max_time),
+ ktime_to_ns(lock->stat.last_time));
}
unsigned long irqflags;
struct wake_lock *lock;
int len = 0;
+ char *p = page;
int type;
spin_lock_irqsave(&list_lock, irqflags);
- len += snprintf(page + len, count - len,
- "name\tcount\texpire_count\twake_count\tactive_since"
- "\ttotal_time\tsleep_time\tmax_time\tlast_change\n");
+ p += sprintf(p, "name\tcount\texpire_count\twake_count\tactive_since"
+ "\ttotal_time\tsleep_time\tmax_time\tlast_change\n");
list_for_each_entry(lock, &inactive_locks, link) {
- len += print_lock_stat(page + len, count - len, lock);
+ p += print_lock_stat(p, lock);
}
for (type = 0; type < WAKE_LOCK_TYPE_COUNT; type++) {
list_for_each_entry(lock, &active_wake_locks[type], link)
- len += print_lock_stat(page + len, count - len, lock);
+ p += print_lock_stat(p, lock);
}
spin_unlock_irqrestore(&list_lock, irqflags);
- if (len == count)
- memcpy(page + len - strlen(TOO_MAY_LOCKS_WARNING),
- TOO_MAY_LOCKS_WARNING,
- strlen(TOO_MAY_LOCKS_WARNING));
+ *start = page + off;
- *eof = 1;
+ len = p - page;
+ if (len > off)
+ len -= off;
+ else
+ len = 0;
- return len;
+ return len < count ? len : count;
}
static void wake_unlock_stat_locked(struct wake_lock *lock, int expired)