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| author | Manos Pitsidianakis <el13635@mail.ntua.gr> | 2017-07-02 13:06:45 +0300 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2017-07-18 15:14:35 +0200 |
| commit | dbe824cc57fbc93dc7ee53287e06c101b20e078b (patch) | |
| tree | 24b3ee1bec73ec405e02a26a4631603d67740cd3 /block | |
| parent | b1e1fa0c3afc7f671fbc24645bdf67949a5657e5 (diff) | |
| download | qemu-dbe824cc57fbc93dc7ee53287e06c101b20e078b.zip qemu-dbe824cc57fbc93dc7ee53287e06c101b20e078b.tar.gz qemu-dbe824cc57fbc93dc7ee53287e06c101b20e078b.tar.bz2 | |
block: add clock_type field to ThrottleGroup
Clock type in throttling is currently inferred by the ThrottleTimer's
clock type even though it is a per-ThrottleGroup property; it doesn't
make sense to have different clock types in the same group. Moving this
to a field in ThrottleGroup can simplify some of the throttle functions.
Signed-off-by: Manos Pitsidianakis <el13635@mail.ntua.gr>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/throttle-groups.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/block/throttle-groups.c b/block/throttle-groups.c index da2b490..71af3f7 100644 --- a/block/throttle-groups.c +++ b/block/throttle-groups.c @@ -61,6 +61,7 @@ typedef struct ThrottleGroup { QLIST_HEAD(, BlockBackendPublic) head; BlockBackend *tokens[2]; bool any_timer_armed[2]; + QEMUClockType clock_type; /* These two are protected by the global throttle_groups_lock */ unsigned refcount; @@ -98,6 +99,12 @@ ThrottleState *throttle_group_incref(const char *name) if (!tg) { tg = g_new0(ThrottleGroup, 1); tg->name = g_strdup(name); + tg->clock_type = QEMU_CLOCK_REALTIME; + + if (qtest_enabled()) { + /* For testing block IO throttling only */ + tg->clock_type = QEMU_CLOCK_VIRTUAL; + } qemu_mutex_init(&tg->lock); throttle_init(&tg->ts); QLIST_INIT(&tg->head); @@ -310,7 +317,7 @@ static void schedule_next_request(BlockBackend *blk, bool is_write) token = blk; } else { ThrottleTimers *tt = &blk_get_public(token)->throttle_timers; - int64_t now = qemu_clock_get_ns(tt->clock_type); + int64_t now = qemu_clock_get_ns(tg->clock_type); timer_mod(tt->timers[is_write], now); tg->any_timer_armed[is_write] = true; } @@ -430,7 +437,7 @@ void throttle_group_config(BlockBackend *blk, ThrottleConfig *cfg) if (timer_pending(tt->timers[1])) { tg->any_timer_armed[1] = false; } - throttle_config(ts, tt, cfg); + throttle_config(ts, tg->clock_type, tt, cfg); qemu_mutex_unlock(&tg->lock); throttle_group_restart_blk(blk); @@ -497,13 +504,6 @@ void throttle_group_register_blk(BlockBackend *blk, const char *groupname) BlockBackendPublic *blkp = blk_get_public(blk); ThrottleState *ts = throttle_group_incref(groupname); ThrottleGroup *tg = container_of(ts, ThrottleGroup, ts); - int clock_type = QEMU_CLOCK_REALTIME; - - if (qtest_enabled()) { - /* For testing block IO throttling only */ - clock_type = QEMU_CLOCK_VIRTUAL; - } - blkp->throttle_state = ts; qemu_mutex_lock(&tg->lock); @@ -518,7 +518,7 @@ void throttle_group_register_blk(BlockBackend *blk, const char *groupname) throttle_timers_init(&blkp->throttle_timers, blk_get_aio_context(blk), - clock_type, + tg->clock_type, read_timer_cb, write_timer_cb, blk); |