The patch titled
freezer: measure freezing time
has been removed from the -mm tree. Its filename was
freezer-measure-freezing-time.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: freezer: measure freezing time
From: Rafael J. Wysocki <rjw@xxxxxxx>
Measure the time of the freezing of tasks, even if it doesn't fail.
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/power/process.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff -puN kernel/power/process.c~freezer-measure-freezing-time kernel/power/process.c
--- a/kernel/power/process.c~freezer-measure-freezing-time
+++ a/kernel/power/process.c
@@ -168,6 +168,11 @@ static int try_to_freeze_tasks(int freez
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 freez
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 freez
* 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 freez
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;
_
Patches currently in -mm which might be from rjw@xxxxxxx are
origin.patch
git-acpi.patch
revert-x86_64-mm-cpa-einval.patch
shrink_slab-handle-bad-shrinkers.patch
-
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