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s390/qdio: add statistics helper macro
qperf_inc() takes a queue as input, but actually updates the statistics in its qdio_irq parent. In some contexts we already have access to the qdio_irq struct, and can avoid the additional dereference. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
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parent
d86f71fd43
commit
4611281021
3 changed files with 7 additions and 5 deletions
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@ -317,13 +317,15 @@ struct qdio_irq {
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#define qperf(__qdev, __attr) ((__qdev)->perf_stat.(__attr))
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#define qperf_inc(__q, __attr) \
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#define QDIO_PERF_STAT_INC(__irq, __attr) \
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({ \
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struct qdio_irq *qdev = (__q)->irq_ptr; \
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struct qdio_irq *qdev = __irq; \
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if (qdev->perf_stat_enabled) \
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(qdev->perf_stat.__attr)++; \
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})
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#define qperf_inc(__q, __attr) QDIO_PERF_STAT_INC((__q)->irq_ptr, __attr)
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static inline void account_sbals_error(struct qdio_q *q, int count)
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{
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q->q_stats.nr_sbal_error += count;
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@ -963,7 +963,7 @@ static void qdio_int_handler_pci(struct qdio_irq *irq_ptr)
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/* skip if polling is enabled or already in work */
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if (test_and_set_bit(QDIO_QUEUE_IRQS_DISABLED,
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&q->u.in.queue_irq_state)) {
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qperf_inc(q, int_discarded);
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QDIO_PERF_STAT_INC(irq_ptr, int_discarded);
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continue;
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}
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q->u.in.queue_start_poll(q->irq_ptr->cdev, q->nr,
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@ -146,7 +146,7 @@ static inline void tiqdio_call_inq_handlers(struct qdio_irq *irq)
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/* skip if polling is enabled or already in work */
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if (test_and_set_bit(QDIO_QUEUE_IRQS_DISABLED,
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&q->u.in.queue_irq_state)) {
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qperf_inc(q, int_discarded);
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QDIO_PERF_STAT_INC(irq, int_discarded);
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continue;
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}
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@ -196,7 +196,7 @@ static void tiqdio_thinint_handler(struct airq_struct *airq, bool floating)
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tiqdio_call_inq_handlers(irq);
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qperf_inc(q, adapter_int);
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QDIO_PERF_STAT_INC(irq, adapter_int);
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}
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rcu_read_unlock();
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}
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