search for: init_sched_switch_trac

At the most recent Xen Summit, Thomas Friebel presented a paper ("Preventing Guests from Spinning Around", http://xen.org/files/xensummitboston08/LHP.pdf) investigating the interactions between spinlocks and virtual machines. Specifically, he looked at what happens when a lock-holding VCPU gets involuntarily preempted. The obvious first order effect is that while the VCPU is not

At the most recent Xen Summit, Thomas Friebel presented a paper ("Preventing Guests from Spinning Around", http://xen.org/files/xensummitboston08/LHP.pdf) investigating the interactions between spinlocks and virtual machines. Specifically, he looked at what happens when a lock-holding VCPU gets involuntarily preempted. The obvious first order effect is that while the VCPU is not

At the most recent Xen Summit, Thomas Friebel presented a paper ("Preventing Guests from Spinning Around", http://xen.org/files/xensummitboston08/LHP.pdf) investigating the interactions between spinlocks and virtual machines. Specifically, he looked at what happens when a lock-holding VCPU gets involuntarily preempted. The obvious first order effect is that while the VCPU is not

...0xd returned 0 after 14 usecs [ 37.921572] calling init_tracepoints+0x0/0xa @ 1 [ 37.926338] initcall init_tracepoints+0x0/0xa returned 0 after 0 usecs [ 37.932923] calling init_events+0x0/0x53 @ 1 [ 37.937344] initcall init_events+0x0/0x53 returned 0 after 1 usecs [ 37.943583] calling init_sched_switch_trace+0x0/0xa @ 1 [ 37.948957] initcall init_sched_switch_trace+0x0/0xa returned 0 after 1 usecs [ 37.956148] calling init_blk_tracer+0x0/0x47 @ 1 [ 37.960917] initcall init_blk_tracer+0x0/0x47 returned 0 after 0 usecs [ 37.967502] calling perf_event_sysfs_init+0x0/0xf @ 1 [ 37.972704] initc...