cpu-timers, icount: new modules

refactoring of cpus.c continues with cpu timer state extraction.

cpu-timers: responsible for the softmmu cpu timers state,
            including cpu clocks and ticks.

icount: counts the TCG instructions executed. As such it is specific to
the TCG accelerator. Therefore, it is built only under CONFIG_TCG.

One complication is due to qtest, which uses an icount field to warp time
as part of qtest (qtest_clock_warp).

In order to solve this problem, provide a separate counter for qtest.

This requires fixing assumptions scattered in the code that
qtest_enabled() implies icount_enabled(), checking each specific case.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[remove redundant initialization with qemu_spice_init]
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
[fix lingering calls to icount_get]
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 2 insertions, 22 deletions

diff --git a/include/qemu/timer.h b/include/qemu/timer.h
index 1dc880e94e..bdecc5b41f 100644
--- a/include/qemu/timer.h
+++ b/include/qemu/timer.h
@@ -166,8 +166,8 @@ bool qemu_clock_expired(QEMUClockType type);
  *
  * Determine whether a clock should be used for deadline
  * calculations. Some clocks, for instance vm_clock with
- * use_icount set, do not count in nanoseconds. Such clocks
- * are not used for deadline calculations, and are presumed
+ * icount_enabled() set, do not count in nanoseconds.
+ * Such clocks are not used for deadline calculations, and are presumed
  * to interrupt any poll using qemu_notify/aio_notify
  * etc.
  *
@@ -225,13 +225,6 @@ void qemu_clock_notify(QEMUClockType type);
 void qemu_clock_enable(QEMUClockType type, bool enabled);
 
 /**
- * qemu_start_warp_timer:
- *
- * Starts a timer for virtual clock update
- */
-void qemu_start_warp_timer(void);
-
-/**
  * qemu_clock_run_timers:
  * @type: clock on which to operate
  *
@@ -791,12 +784,6 @@ static inline int64_t qemu_soonest_timeout(int64_t timeout1, int64_t timeout2)
  */
 void init_clocks(QEMUTimerListNotifyCB *notify_cb);
 
-int64_t cpu_get_ticks(void);
-/* Caller must hold BQL */
-void cpu_enable_ticks(void);
-/* Caller must hold BQL */
-void cpu_disable_ticks(void);
-
 static inline int64_t get_max_clock_jump(void)
 {
     /* This should be small enough to prevent excessive interrupts from being
@@ -850,13 +837,6 @@ static inline int64_t get_clock(void)
 }
 #endif
 
-/* icount */
-int64_t cpu_get_icount_raw(void);
-int64_t cpu_get_icount(void);
-int64_t cpu_get_clock(void);
-int64_t cpu_icount_to_ns(int64_t icount);
-void    cpu_update_icount(CPUState *cpu);
-
 /*******************************************/
 /* host CPU ticks (if available) */