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| author | Claudio Fontana <cfontana@suse.de> | 2020-08-19 13:17:19 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-05 16:41:22 +0200 |
| commit | 740b175973427bcfa32ad894bb1f83b96d184c28 (patch) | |
| tree | 3613e83be5fd8620b369479b98e6ede5d5746a9a /util | |
| parent | 0ac0b47c44b4be6cbce26777a1a5968cc8f025a5 (diff) | |
| download | qemu-740b175973427bcfa32ad894bb1f83b96d184c28.zip qemu-740b175973427bcfa32ad894bb1f83b96d184c28.tar.gz qemu-740b175973427bcfa32ad894bb1f83b96d184c28.tar.bz2 | |
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>
Diffstat (limited to 'util')
| -rw-r--r-- | util/main-loop.c | 12 | ||||
| -rw-r--r-- | util/qemu-timer.c | 10 |
2 files changed, 15 insertions, 7 deletions
diff --git a/util/main-loop.c b/util/main-loop.c index 217c8d6..0c5fe01 100644 --- a/util/main-loop.c +++ b/util/main-loop.c @@ -27,7 +27,7 @@ #include "qemu/cutils.h" #include "qemu/timer.h" #include "sysemu/qtest.h" -#include "sysemu/cpus.h" +#include "sysemu/cpu-timers.h" #include "sysemu/replay.h" #include "qemu/main-loop.h" #include "block/aio.h" @@ -521,9 +521,13 @@ void main_loop_wait(int nonblocking) mlpoll.state = ret < 0 ? MAIN_LOOP_POLL_ERR : MAIN_LOOP_POLL_OK; notifier_list_notify(&main_loop_poll_notifiers, &mlpoll); - /* CPU thread can infinitely wait for event after - missing the warp */ - qemu_start_warp_timer(); + if (icount_enabled()) { + /* + * CPU thread can infinitely wait for event after + * missing the warp + */ + qemu_start_warp_timer(); + } qemu_clock_run_all_timers(); } diff --git a/util/qemu-timer.c b/util/qemu-timer.c index ca67783..0674046 100644 --- a/util/qemu-timer.c +++ b/util/qemu-timer.c @@ -26,8 +26,10 @@ #include "qemu/main-loop.h" #include "qemu/timer.h" #include "qemu/lockable.h" +#include "sysemu/cpu-timers.h" #include "sysemu/replay.h" #include "sysemu/cpus.h" +#include "sysemu/qtest.h" #ifdef CONFIG_POSIX #include <pthread.h> @@ -134,7 +136,7 @@ static void qemu_clock_init(QEMUClockType type, QEMUTimerListNotifyCB *notify_cb bool qemu_clock_use_for_deadline(QEMUClockType type) { - return !(use_icount && (type == QEMU_CLOCK_VIRTUAL)); + return !(icount_enabled() && (type == QEMU_CLOCK_VIRTUAL)); } void qemu_clock_notify(QEMUClockType type) @@ -416,7 +418,7 @@ static bool timer_mod_ns_locked(QEMUTimerList *timer_list, static void timerlist_rearm(QEMUTimerList *timer_list) { /* Interrupt execution to force deadline recalculation. */ - if (timer_list->clock->type == QEMU_CLOCK_VIRTUAL) { + if (icount_enabled() && timer_list->clock->type == QEMU_CLOCK_VIRTUAL) { qemu_start_warp_timer(); } timerlist_notify(timer_list); @@ -633,8 +635,10 @@ int64_t qemu_clock_get_ns(QEMUClockType type) return get_clock(); default: case QEMU_CLOCK_VIRTUAL: - if (use_icount) { + if (icount_enabled()) { return cpu_get_icount(); + } else if (qtest_enabled()) { /* for qtest_clock_warp */ + return qtest_get_virtual_clock(); } else { return cpu_get_clock(); } |