On Monday, August 08, 2011, Pavel Machek wrote: > Hi! > > > > > > > Thanks for the nice pointer. I checked dynamic debug. It's really a good debug tool. > > > > > > With the dynamic debug: > > > > > > 1) user need write a user space parser to process the syslog output; > > > > > > 2) Our testing scenario is we leave the mobile for at least hours. Then, check its status. > > > > > > No serial console available during the testing. One is because console would be suspended, > > > > > > and the other is serial console connecting with spi or HSU devices would consume power. These > > > > > > devices are powered off at suspend-2-ram. > ... > > Not in the case described by Yanmin. > > Really? I see the description above. > > Yes, they'd need to set up syslog to only log >= KERN_ERR, then parse > the (small) results. Even hours worth of suspends should not cause > _that_ many errors. > > Serial console is irrelevant. You need live machine to dump dmesg, but > again, you need live machine to access debugfs, too. This sounds like substantial overhead to collect statistics that we can collect at a much lower cost in the kernel. The patch isn't very intrusive and rather straightforward. Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
