qemu/include/qom
Paolo Bonzini c265e976f4 cpus-common: lock-free fast path for cpu_exec_start/end
Set cpu->running without taking the cpu_list lock, only requiring it if
there is a concurrent exclusive section.  This requires adding a new
field to CPUState, which records whether a running CPU is being counted
in pending_cpus.

When an exclusive section is started concurrently with cpu_exec_start,
cpu_exec_start can use the new field to determine if it has to wait for
the end of the exclusive section.  Likewise, cpu_exec_end can use it to
see if start_exclusive is waiting for that CPU.

This a separate patch for easier bisection of issues.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-09-27 11:57:30 +02:00
..
cpu.h cpus-common: lock-free fast path for cpu_exec_start/end 2016-09-27 11:57:30 +02:00
object.h qom: Fix comment typo 2016-07-06 09:19:35 +02:00
object_interfaces.h qom: -object error messages lost location, restore it 2016-04-28 08:19:36 +02:00
qom-qobject.h qom: move include files to include/qom/ 2012-12-19 08:31:32 +01:00