diff options
| author | Julian Wiedmann <jwi@linux.ibm.com> | 2019-09-30 16:42:35 +0300 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2019-10-31 19:20:50 +0300 |
| commit | 4611281021e9835da825b79ba9b62a31670e0791 (patch) | |
| tree | 0e379ab0c6b35dbb8f099b43053fae040ddd0e0b /drivers/s390/cio/qdio.h | |
| parent | d86f71fd43fd477ee17a5db5d2ae88ad6c6cf983 (diff) | |
| download | linux-4611281021e9835da825b79ba9b62a31670e0791.tar.xz | |
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>
Diffstat (limited to 'drivers/s390/cio/qdio.h')
| -rw-r--r-- | drivers/s390/cio/qdio.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index 7ee29daf216e..a6cbbd8e928c 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -317,13 +317,15 @@ struct qdio_irq { #define qperf(__qdev, __attr) ((__qdev)->perf_stat.(__attr)) -#define qperf_inc(__q, __attr) \ +#define QDIO_PERF_STAT_INC(__irq, __attr) \ ({ \ - struct qdio_irq *qdev = (__q)->irq_ptr; \ + struct qdio_irq *qdev = __irq; \ if (qdev->perf_stat_enabled) \ (qdev->perf_stat.__attr)++; \ }) +#define qperf_inc(__q, __attr) QDIO_PERF_STAT_INC((__q)->irq_ptr, __attr) + static inline void account_sbals_error(struct qdio_q *q, int count) { q->q_stats.nr_sbal_error += count; |