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cpu: convert queued work to a QSIMPLEQ

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We convert queued work to a QSIMPLEQ, instead of
open-coding it.

While at it, make sure that all accesses to the list are
performed while holding the list's lock.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Robert Foley <robert.foley@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200609200738.445-3-robert.foley@linaro.org>
Message-Id: <20200612190237.30436-6-alex.bennee@linaro.org>
This commit is contained in:
Emilio G. Cota 2020-06-12 20:02:24 +01:00 • committed by Alex Bennée
parent 0aebab04b9
commit 0c0fcc2052
4 changed files with 24 additions and 22 deletions
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6
include/hw/core/cpu.h
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@ -331,8 +331,8 @@ struct qemu_work_item;
* @opaque: User data.
* @mem_io_pc: Host Program Counter at which the memory was accessed.
* @kvm_fd: vCPU file descriptor for KVM.
* @work_mutex: Lock to prevent multiple access to queued_work_*.
* @queued_work_first: First asynchronous work pending.
* @work_mutex: Lock to prevent multiple access to @work_list.
* @work_list: List of pending asynchronous work.
* @trace_dstate_delayed: Delayed changes to trace_dstate (includes all changes
* to @trace_dstate).
* @trace_dstate: Dynamic tracing state of events for this vCPU (bitmask).
@ -376,7 +376,7 @@ struct CPUState {
sigjmp_buf jmp_env;
QemuMutex work_mutex;
struct qemu_work_item *queued_work_first, *queued_work_last;
QSIMPLEQ_HEAD(, qemu_work_item) work_list;
CPUAddressSpace *cpu_ases;
int num_ases;