AcoSail/kernel_optimize_test
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kernel_optimize_test/drivers/s390/cio/qdio_debug.c
Heiko Carstens a53c8fab3f s390/comments: unify copyright messages and remove file names 
Remove the file name from the comment at top of many files. In most
cases the file name was wrong anyway, so it's rather pointless.

Also unify the IBM copyright statement. We did have a lot of sightly
different statements and wanted to change them one after another
whenever a file gets touched. However that never happened. Instead
people start to take the old/"wrong" statements to use as a template
for new files.
So unify all of them in one go.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2012-07-20 11:15:04 +02:00

308 lines
7.9 KiB
C
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/*
* Copyright IBM Corp. 2008, 2009
*
* Author: Jan Glauber (jang@linux.vnet.ibm.com)
*/
#include <linux/seq_file.h>
#include <linux/debugfs.h>
#include <linux/uaccess.h>
#include <linux/export.h>
#include <asm/debug.h>
#include "qdio_debug.h"
#include "qdio.h"
debug_info_t *qdio_dbf_setup;
debug_info_t *qdio_dbf_error;
static struct dentry *debugfs_root;
#define QDIO_DEBUGFS_NAME_LEN 10
void qdio_allocate_dbf(struct qdio_initialize *init_data,
struct qdio_irq *irq_ptr)
{
char text[20];
DBF_EVENT("qfmt:%1d", init_data->q_format);
DBF_HEX(init_data->adapter_name, 8);
DBF_EVENT("qpff%4x", init_data->qib_param_field_format);
DBF_HEX(&init_data->qib_param_field, sizeof(void *));
DBF_HEX(&init_data->input_slib_elements, sizeof(void *));
DBF_HEX(&init_data->output_slib_elements, sizeof(void *));
DBF_EVENT("niq:%1d noq:%1d", init_data->no_input_qs,
init_data->no_output_qs);
DBF_HEX(&init_data->input_handler, sizeof(void *));
DBF_HEX(&init_data->output_handler, sizeof(void *));
DBF_HEX(&init_data->int_parm, sizeof(long));
DBF_HEX(&init_data->input_sbal_addr_array, sizeof(void *));
DBF_HEX(&init_data->output_sbal_addr_array, sizeof(void *));
DBF_EVENT("irq:%8lx", (unsigned long)irq_ptr);
/* allocate trace view for the interface */
snprintf(text, 20, "qdio_%s", dev_name(&init_data->cdev->dev));
irq_ptr->debug_area = debug_register(text, 2, 1, 16);
debug_register_view(irq_ptr->debug_area, &debug_hex_ascii_view);
debug_set_level(irq_ptr->debug_area, DBF_WARN);
DBF_DEV_EVENT(DBF_ERR, irq_ptr, "dbf created");
}
static int qstat_show(struct seq_file *m, void *v)
{
unsigned char state;
struct qdio_q *q = m->private;
int i;
if (!q)
return 0;
seq_printf(m, "Timestamp: %Lx Last AI: %Lx\n",
q->timestamp, last_ai_time);
seq_printf(m, "nr_used: %d ftc: %d last_move: %d\n",
atomic_read(&q->nr_buf_used),
q->first_to_check, q->last_move);
if (q->is_input_q) {
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, "DSCI: %d IRQs disabled: %u\n",
*(u32 *)q->irq_ptr->dsci,
test_bit(QDIO_QUEUE_IRQS_DISABLED,
&q->u.in.queue_irq_state));
}
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++) {
debug_get_buf_state(q, i, &state);
switch (state) {
case SLSB_P_INPUT_NOT_INIT:
case SLSB_P_OUTPUT_NOT_INIT:
seq_printf(m, "N");
break;
case SLSB_P_OUTPUT_PENDING:
seq_printf(m, "P");
break;
case SLSB_P_INPUT_PRIMED:
case SLSB_CU_OUTPUT_PRIMED:
seq_printf(m, "+");
break;
case SLSB_P_INPUT_ACK:
seq_printf(m, "A");
break;
case SLSB_P_INPUT_ERROR:
case SLSB_P_OUTPUT_ERROR:
seq_printf(m, "x");
break;
case SLSB_CU_INPUT_EMPTY:
case SLSB_P_OUTPUT_EMPTY:
seq_printf(m, "-");
break;
case SLSB_P_INPUT_HALTED:
case SLSB_P_OUTPUT_HALTED:
seq_printf(m, ".");
break;
default:
seq_printf(m, "?");
}
if (i == 63)
seq_printf(m, "\n");
}
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;
}
static int qstat_seq_open(struct inode *inode, struct file *filp)
{
return single_open(filp, qstat_show,
filp->f_path.dentry->d_inode->i_private);
}
static const struct file_operations debugfs_fops = {
.owner = THIS_MODULE,
.open = qstat_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static char *qperf_names[] = {
"Assumed adapter interrupts",
"QDIO interrupts",
"Requested PCIs",
"Inbound tasklet runs",
"Inbound tasklet resched",
"Inbound tasklet resched2",
"Outbound tasklet runs",
"SIGA read",
"SIGA write",
"SIGA sync",
"Inbound calls",
"Inbound handler",
"Inbound stop_polling",
"Inbound queue full",
"Outbound calls",
"Outbound handler",
"Outbound queue full",
"Outbound fast_requeue",
"Outbound target_full",
"QEBSM eqbs",
"QEBSM eqbs partial",
"QEBSM sqbs",
"QEBSM sqbs partial",
"Discarded interrupts"
};
static int qperf_show(struct seq_file *m, void *v)
{
struct qdio_irq *irq_ptr = m->private;
unsigned int *stat;
int i;
if (!irq_ptr)
return 0;
if (!irq_ptr->perf_stat_enabled) {
seq_printf(m, "disabled\n");
return 0;
}
stat = (unsigned int *)&irq_ptr->perf_stat;
for (i = 0; i < ARRAY_SIZE(qperf_names); i++)
seq_printf(m, "%26s:\t%u\n",
qperf_names[i], *(stat + i));
return 0;
}
static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf,
size_t count, loff_t *off)
{
struct seq_file *seq = file->private_data;
struct qdio_irq *irq_ptr = seq->private;
struct qdio_q *q;
unsigned long val;
int ret, i;
if (!irq_ptr)
return 0;
ret = kstrtoul_from_user(ubuf, count, 10, &val);
if (ret)
return ret;
switch (val) {
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;
break;
}
return count;
}
static int qperf_seq_open(struct inode *inode, struct file *filp)
{
return single_open(filp, qperf_show,
filp->f_path.dentry->d_inode->i_private);
}
static struct file_operations debugfs_perf_fops = {
.owner = THIS_MODULE,
.open = qperf_seq_open,
.read = seq_read,
.write = qperf_seq_write,
.llseek = seq_lseek,
.release = single_release,
};
static void setup_debugfs_entry(struct qdio_q *q, struct ccw_device *cdev)
{
char name[QDIO_DEBUGFS_NAME_LEN];
snprintf(name, QDIO_DEBUGFS_NAME_LEN, "%s_%d",
q->is_input_q ? "input" : "output",
q->nr);
q->debugfs_q = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR,
q->irq_ptr->debugfs_dev, q, &debugfs_fops);
if (IS_ERR(q->debugfs_q))
q->debugfs_q = NULL;
}
void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
{
struct qdio_q *q;
int i;
irq_ptr->debugfs_dev = debugfs_create_dir(dev_name(&cdev->dev),
debugfs_root);
if (IS_ERR(irq_ptr->debugfs_dev))
irq_ptr->debugfs_dev = NULL;
irq_ptr->debugfs_perf = debugfs_create_file("statistics",
S_IFREG | S_IRUGO | S_IWUSR,
irq_ptr->debugfs_dev, irq_ptr,
&debugfs_perf_fops);
if (IS_ERR(irq_ptr->debugfs_perf))
irq_ptr->debugfs_perf = NULL;
for_each_input_queue(irq_ptr, q, i)
setup_debugfs_entry(q, cdev);
for_each_output_queue(irq_ptr, q, i)
setup_debugfs_entry(q, cdev);
}
void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
{
struct qdio_q *q;
int i;
for_each_input_queue(irq_ptr, q, i)
debugfs_remove(q->debugfs_q);
for_each_output_queue(irq_ptr, q, i)
debugfs_remove(q->debugfs_q);
debugfs_remove(irq_ptr->debugfs_perf);
debugfs_remove(irq_ptr->debugfs_dev);
}
int __init qdio_debug_init(void)
{
debugfs_root = debugfs_create_dir("qdio", NULL);
qdio_dbf_setup = debug_register("qdio_setup", 16, 1, 16);
debug_register_view(qdio_dbf_setup, &debug_hex_ascii_view);
debug_set_level(qdio_dbf_setup, DBF_INFO);
DBF_EVENT("dbf created\n");
qdio_dbf_error = debug_register("qdio_error", 4, 1, 16);
debug_register_view(qdio_dbf_error, &debug_hex_ascii_view);
debug_set_level(qdio_dbf_error, DBF_INFO);
DBF_ERROR("dbf created\n");
return 0;
}
void qdio_debug_exit(void)
{
debugfs_remove(debugfs_root);
if (qdio_dbf_setup)
debug_unregister(qdio_dbf_setup);
if (qdio_dbf_error)
debug_unregister(qdio_dbf_error);
}
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