diff options
Diffstat (limited to 'include/net/sch_generic.h')
| -rw-r--r-- | include/net/sch_generic.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 4d2b37226e75..98c10a28cd01 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -30,7 +30,6 @@ struct qdisc_rate_table { enum qdisc_state_t { __QDISC_STATE_SCHED, __QDISC_STATE_DEACTIVATED, - __QDISC_STATE_RUNNING, }; struct qdisc_size_table { @@ -102,6 +101,7 @@ struct Qdisc { refcount_t refcnt; spinlock_t busylock ____cacheline_aligned_in_smp; + spinlock_t seqlock; }; static inline void qdisc_refcount_inc(struct Qdisc *qdisc) @@ -111,17 +111,17 @@ static inline void qdisc_refcount_inc(struct Qdisc *qdisc) refcount_inc(&qdisc->refcnt); } -static inline bool qdisc_is_running(const struct Qdisc *qdisc) +static inline bool qdisc_is_running(struct Qdisc *qdisc) { if (qdisc->flags & TCQ_F_NOLOCK) - return test_bit(__QDISC_STATE_RUNNING, &qdisc->state); + return spin_is_locked(&qdisc->seqlock); return (raw_read_seqcount(&qdisc->running) & 1) ? true : false; } static inline bool qdisc_run_begin(struct Qdisc *qdisc) { if (qdisc->flags & TCQ_F_NOLOCK) { - if (test_and_set_bit(__QDISC_STATE_RUNNING, &qdisc->state)) + if (!spin_trylock(&qdisc->seqlock)) return false; } else if (qdisc_is_running(qdisc)) { return false; @@ -138,7 +138,7 @@ static inline void qdisc_run_end(struct Qdisc *qdisc) { write_seqcount_end(&qdisc->running); if (qdisc->flags & TCQ_F_NOLOCK) - clear_bit(__QDISC_STATE_RUNNING, &qdisc->state); + spin_unlock(&qdisc->seqlock); } static inline bool qdisc_may_bulk(const struct Qdisc *qdisc) |