Revision 95ef1e52922cf75b1ea2eae54ef886f2cc47eecb authored by Avi Kivity on 15 November 2011, 12:59:07 UTC, committed by Avi Kivity on 20 November 2011, 08:53:48 UTC
Prevent tracing of preempt_disable() in get_cpu_var() in kvm_clock_read(). When CONFIG_DEBUG_PREEMPT is enabled, preempt_disable/enable() are traced and this causes the function_graph tracer to go into an infinite recursion. By open coding the preempt_disable() around the get_cpu_var(), we can use the notrace version which prevents preempt_disable/enable() from being traced and prevents the recursion. Based on a similar patch for Xen from Jeremy Fitzhardinge. Tested-by: Gleb Natapov <gleb@redhat.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Avi Kivity <avi@redhat.com>
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| File | Mode | Size |
|---|---|---|
| platform | ||
| acexcep.h | -rw-r--r-- | 12.5 KB |
| acnames.h | -rw-r--r-- | 3.4 KB |
| acoutput.h | -rw-r--r-- | 11.1 KB |
| acpi.h | -rw-r--r-- | 3.0 KB |
| acpi_bus.h | -rw-r--r-- | 11.1 KB |
| acpi_drivers.h | -rw-r--r-- | 5.2 KB |
| acpi_numa.h | -rw-r--r-- | 471 bytes |
| acpiosxf.h | -rw-r--r-- | 7.7 KB |
| acpixf.h | -rw-r--r-- | 12.4 KB |
| acrestyp.h | -rw-r--r-- | 11.0 KB |
| actbl.h | -rw-r--r-- | 16.8 KB |
| actbl1.h | -rw-r--r-- | 25.3 KB |
| actbl2.h | -rw-r--r-- | 27.9 KB |
| actypes.h | -rw-r--r-- | 34.5 KB |
| apei.h | -rw-r--r-- | 1.1 KB |
| atomicio.h | -rw-r--r-- | 307 bytes |
| button.h | -rw-r--r-- | 652 bytes |
| container.h | -rw-r--r-- | 198 bytes |
| hed.h | -rw-r--r-- | 371 bytes |
| pdc_intel.h | -rw-r--r-- | 1009 bytes |
| processor.h | -rw-r--r-- | 8.9 KB |
| reboot.h | -rw-r--r-- | 162 bytes |
| video.h | -rw-r--r-- | 958 bytes |
Computing file changes ...
