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[S390] qdio: account processed SBAL during queue scan

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Add counters for the number of processed SBALs. The numbers summarize
how many SBALs were processed at each queue scan and indicate the
utilization of the queue. Furthermore the number of unsuccessfull
queue scans, SBAL errors and the total number of processed
SBALs are accounted.

Also regroup struct qdio_q to move read-mostly and write-mostly data
into different cachelines.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Jan Glauber
2010-02-26 22:37:36 +01:00
committed by Martin Schwidefsky
parent a93b8ec1df
commit d307297f73
3 changed files with 102 additions and 34 deletions
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23
drivers/s390/cio/qdio_debug.c
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@@ -60,7 +60,7 @@ static int qstat_show(struct seq_file *m, void *v)
seq_printf(m, "ftc: %d last_move: %d\n", q->first_to_check, q->last_move);
seq_printf(m, "polling: %d ack start: %d ack count: %d\n",
q->u.in.polling, q->u.in.ack_start, q->u.in.ack_count);
seq_printf(m, "slsb buffer states:\n");
seq_printf(m, "SBAL states:\n");
seq_printf(m, "|0 |8 |16 |24 |32 |40 |48 |56 63|\n");
for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
@@ -97,6 +97,20 @@ static int qstat_show(struct seq_file *m, void *v)
}
seq_printf(m, "\n");
seq_printf(m, "|64 |72 |80 |88 |96 |104 |112 | 127|\n");
seq_printf(m, "\nSBAL statistics:");
if (!q->irq_ptr->perf_stat_enabled) {
seq_printf(m, " disabled\n");
return 0;
}
seq_printf(m, "\n1 2.. 4.. 8.. "
"16.. 32.. 64.. 127\n");
for (i = 0; i < ARRAY_SIZE(q->q_stats.nr_sbals); i++)
seq_printf(m, "%-10u ", q->q_stats.nr_sbals[i]);
seq_printf(m, "\nError NOP Total\n%-10u %-10u %-10u\n\n",
q->q_stats.nr_sbal_error, q->q_stats.nr_sbal_nop,
q->q_stats.nr_sbal_total);
return 0;
}
@@ -181,9 +195,10 @@ static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf,
{
struct seq_file *seq = file->private_data;
struct qdio_irq *irq_ptr = seq->private;
struct qdio_q *q;
unsigned long val;
char buf[8];
int ret;
int ret, i;
if (!irq_ptr)
return 0;
@@ -201,6 +216,10 @@ static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf,
case 0:
irq_ptr->perf_stat_enabled = 0;
memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat));
for_each_input_queue(irq_ptr, q, i)
memset(&q->q_stats, 0, sizeof(q->q_stats));
for_each_output_queue(irq_ptr, q, i)
memset(&q->q_stats, 0, sizeof(q->q_stats));
break;
case 1:
irq_ptr->perf_stat_enabled = 1;