[Bugme-new] [Bug 34042] New: kworker consumes ~100% CPU on HP Elitebook 8540w after resume (again)
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Wed Apr 27 20:30:15 PDT 2011
https://bugzilla.kernel.org/show_bug.cgi?id=34042
Summary: kworker consumes ~100% CPU on HP Elitebook 8540w after
resume (again)
Product: ACPI
Version: 2.5
Kernel Version: 2.6.39_rc5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Config-Interrupts
AssignedTo: acpi_config-interrupts at kernel-bugs.osdl.org
ReportedBy: kernel at feystorm.net
CC: rjw at sisk.pl
Regression: No
This is the *exact* same problem as in bug 29722, with the exact same laptop.
The patch that solved the problem in bug 29722 is in 2.6.39_rc5, so there is
apparently another cause.
When resuming from standby, kworker starts consuming almost all of the
available CPU, while /sys/firmware/acpi/interrupts/gpe_all starts increasing at
a rate of about 6000 per second.
Kernel is built without CONFIG_HOTPLUG_PCI_PCIE and with
CONFIG_HOTPLUG_PCI_ACPI=y
Attachments of a lot of the info requested in bug 29722 forthcoming.
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