| Message ID | 161649773401.599835.8362213390558184647.stgit@pasha-ThinkPad-X280 |
|---|---|
| State | New |
| Headers | show |
| Series | qcow2: use external virtual timers | expand |
On 23/03/21 12:08, Pavel Dovgalyuk wrote: > Regular virtual timers are used to emulate timings > related to vCPU and peripheral states. QCOW2 uses timers > to clean the cache. These timers should have external > flag. In the opposite case they affect the execution > and it can't be recorded and replayed. > This patch adds external flag to the timer for qcow2 > cache clean. > > Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> > --- > block/qcow2.c | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/block/qcow2.c b/block/qcow2.c > index 0db1227ac9..2fb43c6f7e 100644 > --- a/block/qcow2.c > +++ b/block/qcow2.c > @@ -840,9 +840,10 @@ static void cache_clean_timer_init(BlockDriverState *bs, AioContext *context) > { > BDRVQcow2State *s = bs->opaque; > if (s->cache_clean_interval > 0) { > - s->cache_clean_timer = aio_timer_new(context, QEMU_CLOCK_VIRTUAL, > - SCALE_MS, cache_clean_timer_cb, > - bs); > + s->cache_clean_timer = > + aio_timer_new_with_attrs(context, QEMU_CLOCK_VIRTUAL, > + SCALE_MS, QEMU_TIMER_ATTR_EXTERNAL, > + cache_clean_timer_cb, bs); > timer_mod(s->cache_clean_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + > (int64_t) s->cache_clean_interval * 1000); > } > Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/block/qcow2.c b/block/qcow2.c index 0db1227ac9..2fb43c6f7e 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -840,9 +840,10 @@ static void cache_clean_timer_init(BlockDriverState *bs, AioContext *context) { BDRVQcow2State *s = bs->opaque; if (s->cache_clean_interval > 0) { - s->cache_clean_timer = aio_timer_new(context, QEMU_CLOCK_VIRTUAL, - SCALE_MS, cache_clean_timer_cb, - bs); + s->cache_clean_timer = + aio_timer_new_with_attrs(context, QEMU_CLOCK_VIRTUAL, + SCALE_MS, QEMU_TIMER_ATTR_EXTERNAL, + cache_clean_timer_cb, bs); timer_mod(s->cache_clean_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + (int64_t) s->cache_clean_interval * 1000); }
Regular virtual timers are used to emulate timings related to vCPU and peripheral states. QCOW2 uses timers to clean the cache. These timers should have external flag. In the opposite case they affect the execution and it can't be recorded and replayed. This patch adds external flag to the timer for qcow2 cache clean. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> --- block/qcow2.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)