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Power: Add wakeup reasons counters from boot in suspend_since_boot

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From left to right:
        1. Amount of no-wait cycles
        2. Amount of timeout cycles
        3. Max waiting time in ms

Change-Id: Ibc0bb1c4ea591d005cdbb095b6d21c0734d2eb8b
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
This commit is contained in:
Dmitry Shmidt 2015-06-09 17:25:23 -07:00 committed by Artem Borisov
parent dc58d3c933
commit f6d4e6286e
1 changed files with 18 additions and 3 deletions
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21
kernel/power/wakeup_reason.c
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@ -42,6 +42,10 @@ static spinlock_t resume_reason_lock;
bool log_wakeups __read_mostly;
struct completion wakeups_completion;
static unsigned long wakeup_ready_timeout;
static unsigned long wakeup_ready_wait;
static unsigned long wakeup_ready_nowait;
static struct timespec last_xtime; /* wall time before last suspend */
static struct timespec curr_xtime; /* wall time after last suspend */
static struct timespec last_stime; /* sleep time before last suspend */
@ -286,11 +290,14 @@ static ssize_t suspend_since_boot_show(struct kobject *kobj,
struct timespec xtime;
xtime = timespec_sub(total_xtime, total_stime);
return sprintf(buf, "%lu %lu %lu.%09lu %lu.%09lu %lu.%09lu\n",
return sprintf(buf, "%lu %lu %lu.%09lu %lu.%09lu %lu.%09lu\n"
"%lu %lu %u\n",
suspend_count, abort_count,
xtime.tv_sec, xtime.tv_nsec,
total_atime.tv_sec, total_atime.tv_nsec,
total_stime.tv_sec, total_stime.tv_nsec);
total_stime.tv_sec, total_stime.tv_nsec,
wakeup_ready_nowait, wakeup_ready_timeout,
jiffies_to_msecs(wakeup_ready_wait));
}
static struct kobj_attribute resume_reason = __ATTR_RO(last_resume_reason);
@ -515,17 +522,25 @@ const struct list_head* get_wakeup_reasons(unsigned long timeout,
if (logging_wakeup_reasons()) {
unsigned long signalled = 0;
unsigned long time_waited;
if (timeout)
signalled = wait_for_completion_timeout(&wakeups_completion, timeout);
if (!signalled) {
pr_warn("%s: completion timeout\n", __func__);
wakeup_ready_timeout++;
stop_logging_wakeup_reasons();
walk_irq_node_tree(base_irq_nodes, build_unfinished_nodes, unfinished);
return NULL;
}
time_waited = timeout - signalled;
pr_info("%s: waited for %u ms\n",
__func__,
jiffies_to_msecs(timeout - signalled));
jiffies_to_msecs(time_waited));
if (time_waited > wakeup_ready_wait)
wakeup_ready_wait = time_waited;
} else {
wakeup_ready_nowait++;
}
return get_wakeup_reasons_nosync();