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Old 10-30-2009, 01:23 PM
Andy Whitcroft
 
Default PM: Make warning in suspend_test_finish() less likely to happen

From: Rafael J. Wysocki <rjw@sisk.pl>

BugLink: http://bugs.launchpad.net/bugs/464552

Increase TEST_SUSPEND_SECONDS to 10 so the warning in
suspend_test_finish() doesn't annoy the users of slower systems so much.

Also, make the warning print the suspend-resume cycle time, so that we
know why the warning actually triggered.

Patch prepared during the hacking session at the Kernel Summit in Tokyo.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 04bf7539c08d64184736cdc5e4ad617eda77eb0f)

Signed-off-by: Andy Whitcroft <apw@canonical.com>
---
kernel/power/suspend_test.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/power/suspend_test.c b/kernel/power/suspend_test.c
index 17d8bb1..25596e4 100644
--- a/kernel/power/suspend_test.c
+++ b/kernel/power/suspend_test.c
@@ -19,7 +19,7 @@
* The time it takes is system-specific though, so when we test this
* during system bootup we allow a LOT of time.
*/
-#define TEST_SUSPEND_SECONDS 5
+#define TEST_SUSPEND_SECONDS 10

static unsigned long suspend_test_start_time;

@@ -49,7 +49,8 @@ void suspend_test_finish(const char *label)
* has some performance issues. The stack dump of a WARN_ON
* is more likely to get the right attention than a printk...
*/
- WARN(msec > (TEST_SUSPEND_SECONDS * 1000), "Component: %s
", label);
+ WARN(msec > (TEST_SUSPEND_SECONDS * 1000),
+ "Component: %s, time: %u
", label, msec);
}

/*
--
1.6.3.3


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