diff options
author | Dave Airlie <airlied@redhat.com> | 2009-03-28 20:22:18 -0400 |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2009-03-28 20:22:18 -0400 |
commit | 90f959bcb386da2c71613dcefc6a285e054a539e (patch) | |
tree | ee3e9dd4111d4aad12e579cb0c2c159114dff263 /drivers/s390/cio/qdio_thinint.c | |
parent | 41f13fe81dd1b08723ab9f3fc3c7f29cfa81f1a5 (diff) | |
parent | 07d43ba98621f08e252a48c96b258b4d572b0257 (diff) |
drm: merge Linux master into HEAD
Conflicts:
drivers/gpu/drm/drm_info.c
drivers/gpu/drm/drm_proc.c
drivers/gpu/drm/i915/i915_gem_debugfs.c
Diffstat (limited to 'drivers/s390/cio/qdio_thinint.c')
-rw-r--r-- | drivers/s390/cio/qdio_thinint.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index 8e90e147b74..c655d011a78 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -31,6 +31,7 @@ /* list of thin interrupt input queues */ static LIST_HEAD(tiq_list); +DEFINE_MUTEX(tiq_list_lock); /* adapter local summary indicator */ static unsigned char *tiqdio_alsi; @@ -95,12 +96,11 @@ void tiqdio_add_input_queues(struct qdio_irq *irq_ptr) if (!css_qdio_omit_svs && irq_ptr->siga_flag.sync) css_qdio_omit_svs = 1; - for_each_input_queue(irq_ptr, q, i) { + mutex_lock(&tiq_list_lock); + for_each_input_queue(irq_ptr, q, i) list_add_rcu(&q->entry, &tiq_list); - synchronize_rcu(); - } + mutex_unlock(&tiq_list_lock); xchg(irq_ptr->dsci, 1); - tasklet_schedule(&tiqdio_tasklet); } /* @@ -118,7 +118,10 @@ void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr) /* if establish triggered an error */ if (!q || !q->entry.prev || !q->entry.next) continue; + + mutex_lock(&tiq_list_lock); list_del_rcu(&q->entry); + mutex_unlock(&tiq_list_lock); synchronize_rcu(); } } @@ -155,15 +158,15 @@ static void __tiqdio_inbound_processing(struct qdio_q *q) */ qdio_check_outbound_after_thinint(q); -again: if (!qdio_inbound_q_moved(q)) return; - qdio_kick_inbound_handler(q); + qdio_kick_handler(q); if (!tiqdio_inbound_q_done(q)) { qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop); - goto again; + if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) + tasklet_schedule(&q->tasklet); } qdio_stop_polling(q); @@ -173,7 +176,8 @@ again: */ if (!tiqdio_inbound_q_done(q)) { qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop2); - goto again; + if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) + tasklet_schedule(&q->tasklet); } } @@ -366,10 +370,11 @@ void qdio_shutdown_thinint(struct qdio_irq *irq_ptr) void __exit tiqdio_unregister_thinints(void) { - tasklet_disable(&tiqdio_tasklet); + WARN_ON(!list_empty(&tiq_list)); if (tiqdio_alsi) { s390_unregister_adapter_interrupt(tiqdio_alsi, QDIO_AIRQ_ISC); isc_unregister(QDIO_AIRQ_ISC); } + tasklet_kill(&tiqdio_tasklet); } |