summaryrefslogtreecommitdiffstats
path: root/kernel/power
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/power')
-rw-r--r--kernel/power/process.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/kernel/power/process.c b/kernel/power/process.c
index 3d98d7f99b1..6533923e711 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -168,6 +168,11 @@ static int try_to_freeze_tasks(int freeze_user_space)
struct task_struct *g, *p;
unsigned long end_time;
unsigned int todo;
+ struct timeval start, end;
+ s64 elapsed_csecs64;
+ unsigned int elapsed_csecs;
+
+ do_gettimeofday(&start);
end_time = jiffies + TIMEOUT;
do {
@@ -194,6 +199,11 @@ static int try_to_freeze_tasks(int freeze_user_space)
break;
} while (todo);
+ do_gettimeofday(&end);
+ elapsed_csecs64 = timeval_to_ns(&end) - timeval_to_ns(&start);
+ do_div(elapsed_csecs64, NSEC_PER_SEC / 100);
+ elapsed_csecs = elapsed_csecs64;
+
if (todo) {
/* This does not unfreeze processes that are already frozen
* (we have slightly ugly calling convention in that respect,
@@ -201,10 +211,9 @@ static int try_to_freeze_tasks(int freeze_user_space)
* but it cleans up leftover PF_FREEZE requests.
*/
printk("\n");
- printk(KERN_ERR "Freezing of %s timed out after %d seconds "
+ printk(KERN_ERR "Freezing of tasks failed after %d.%02d seconds "
"(%d tasks refusing to freeze):\n",
- freeze_user_space ? "user space " : "tasks ",
- TIMEOUT / HZ, todo);
+ elapsed_csecs / 100, elapsed_csecs % 100, todo);
show_state();
read_lock(&tasklist_lock);
do_each_thread(g, p) {
@@ -215,6 +224,9 @@ static int try_to_freeze_tasks(int freeze_user_space)
task_unlock(p);
} while_each_thread(g, p);
read_unlock(&tasklist_lock);
+ } else {
+ printk("(elapsed %d.%02d seconds) ", elapsed_csecs / 100,
+ elapsed_csecs % 100);
}
return todo ? -EBUSY : 0;