static void migration_thread(void *__data)
{
int cpu = (long) __data;
edf_wm_task_t *et;
struct timespec ts;
set_current_state(TASK_INTERRUPTIBLE);
while (!kthread_should_stop()) {
spin_lock_irq(&kthread[cpu].lock);
if (list_empty(&kthread[cpu].list)) {
spin_unlock_irq(&kthread[cpu].lock);
schedule();
set_current_state(TASK_INTERRUPTIBLE);
continue;
}
/* get a task in the list by fifo. */
et = list_first_entry(&kthread[cpu].list,
edf_wm_task_t,
migration_list);
list_del_init(&et->migration_list);
spin_unlock_irq(&kthread[cpu].lock);
/* account runtime. */
jiffies_to_timespec(et->runtime[cpu], &ts);
et->rt->task->dl.sched_runtime = timespec_to_ns(&ts);
/* trace precise deadlines. */
et->rt->deadline_time += et->deadline;
et->rt->task->dl.sched_deadline = et->sched_split_deadline;
et->rt->task->dl.deadline = et->next_release;
et->next_release += et->sched_split_deadline;
/* now let's migrate the task! */
et->rt->task->dl.flags |= DL_NEW;
migrate_task(et->rt, cpu);
wake_up_process(et->rt->task);
/* when the budget is exhausted, the deadline should be added by
et->sched_deadline but not by et->sched_split_deadline. */
et->rt->task->dl.sched_deadline = et->sched_deadline;
/* account runtime. */
jiffies_to_timespec(et->runtime[cpu], &ts);
et->rt->task->dl.runtime = timespec_to_ns(&ts);
/* activate the timer for the next migration of this task. */
if (et->last_cpu != cpu) {
et->rt->task->dl.flags &= ~SCHED_EXHAUSTIVE;
start_window_timer(et);
}
else {
et->rt->task->dl.flags |= SCHED_EXHAUSTIVE;
}
}
}
int rt_down_timeout(struct semaphore *sem, long jiff)
{
struct hrtimer_sleeper t;
struct timespec ts;
unsigned long expires = jiffies + jiff + 1;
int ret;
/*
* rt_mutex_slowlock can use an interruptible, but this needs to
* be TASK_INTERRUPTIBLE. The down_timeout uses TASK_UNINTERRUPTIBLE.
* To handle this we loop if a signal caused the timeout and the
* we recalculate the new timeout.
* Yes Thomas, this is a hack! But we can fix it right later.
*/
do {
jiffies_to_timespec(jiff, &ts);
hrtimer_init_on_stack(&t.timer, HRTIMER_MODE_REL, CLOCK_MONOTONIC);
t.timer._expires = timespec_to_ktime(ts);
ret = rt_mutex_timed_lock(&sem->lock, &t, 0);
if (ret != -EINTR)
break;
/* signal occured, but the down_timeout doesn't handle them */
jiff = expires - jiffies;
} while (jiff > 0);
if (!ret)
__down_complete(sem);
else
ret = -ETIME;
return ret;
}
asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
struct compat_timespec __user *rmtp)
{
struct timespec t;
struct restart_block *restart;
unsigned long expire;
if (get_compat_timespec(&t, rqtp))
return -EFAULT;
if ((t.tv_nsec >= 1000000000L) || (t.tv_nsec < 0) || (t.tv_sec < 0))
return -EINVAL;
expire = timespec_to_jiffies(&t) + (t.tv_sec || t.tv_nsec);
expire = schedule_timeout_interruptible(expire);
if (expire == 0)
return 0;
if (rmtp) {
jiffies_to_timespec(expire, &t);
if (put_compat_timespec(&t, rmtp))
return -EFAULT;
}
restart = ¤t_thread_info()->restart_block;
restart->fn = compat_nanosleep_restart;
restart->arg0 = jiffies + expire;
restart->arg1 = (unsigned long) rmtp;
return -ERESTART_RESTARTBLOCK;
}
static long compat_nanosleep_restart(struct restart_block *restart)
{
unsigned long expire = restart->arg0, now = jiffies;
struct compat_timespec __user *rmtp;
/* Did it expire while we handled signals? */
if (!time_after(expire, now))
return 0;
expire = schedule_timeout_interruptible(expire - now);
if (expire == 0)
return 0;
rmtp = (struct compat_timespec __user *)restart->arg1;
if (rmtp) {
struct compat_timespec ct;
struct timespec t;
jiffies_to_timespec(expire, &t);
ct.tv_sec = t.tv_sec;
ct.tv_nsec = t.tv_nsec;
if (copy_to_user(rmtp, &ct, sizeof(ct)))
return -EFAULT;
}
/* The 'restart' block is already filled in */
return -ERESTART_RESTARTBLOCK;
}
static int socle_otg_seq_show(struct seq_file *s, void *v)
{
struct timespec ts;
u32 m_sec;
u32 tran_speed_rate;
jiffies_to_timespec(1, &ts);
m_sec = ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
printk("tran_jiffies = %ld\n", tran_jiffies);
printk("tran_timers = %ld\n", tran_timers);
m_sec = (m_sec * tran_jiffies) + (m_sec * tran_timers / otg_timer_load);
seq_printf(s, "Total time for tran: %10d ms\n", m_sec);
seq_printf(s, "Total bytes for tran: %10ld Bytes\n", tran_bytes);
if (0 == m_sec)
tran_speed_rate = 0;
else
tran_speed_rate = tran_bytes / m_sec;
seq_printf(s, "Speed rate of tran: %10d B/ms\n", tran_speed_rate);
tran_timers=0;
tran_jiffies=0;
tran_bytes=0;
return 0;
}
/**
* fc_get_host_stats() - Return the Scsi_Host's statistics
* @shost: The SCSI host whose statistics are to be returned
*/
struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost)
{
struct fc_host_statistics *fcoe_stats;
struct fc_lport *lport = shost_priv(shost);
struct timespec v0, v1;
unsigned int cpu;
u64 fcp_in_bytes = 0;
u64 fcp_out_bytes = 0;
fcoe_stats = &lport->host_stats;
memset(fcoe_stats, 0, sizeof(struct fc_host_statistics));
jiffies_to_timespec(jiffies, &v0);
jiffies_to_timespec(lport->boot_time, &v1);
fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec);
for_each_possible_cpu(cpu) {
struct fcoe_dev_stats *stats;
stats = per_cpu_ptr(lport->dev_stats, cpu);
fcoe_stats->tx_frames += stats->TxFrames;
fcoe_stats->tx_words += stats->TxWords;
fcoe_stats->rx_frames += stats->RxFrames;
fcoe_stats->rx_words += stats->RxWords;
fcoe_stats->error_frames += stats->ErrorFrames;
fcoe_stats->invalid_crc_count += stats->InvalidCRCCount;
fcoe_stats->fcp_input_requests += stats->InputRequests;
fcoe_stats->fcp_output_requests += stats->OutputRequests;
fcoe_stats->fcp_control_requests += stats->ControlRequests;
fcp_in_bytes += stats->InputBytes;
fcp_out_bytes += stats->OutputBytes;
fcoe_stats->link_failure_count += stats->LinkFailureCount;
}
fcoe_stats->fcp_input_megabytes = div_u64(fcp_in_bytes, 1000000);
fcoe_stats->fcp_output_megabytes = div_u64(fcp_out_bytes, 1000000);
fcoe_stats->lip_count = -1;
fcoe_stats->nos_count = -1;
fcoe_stats->loss_of_sync_count = -1;
fcoe_stats->loss_of_signal_count = -1;
fcoe_stats->prim_seq_protocol_err_count = -1;
fcoe_stats->dumped_frames = -1;
return fcoe_stats;
}
int __delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk)
{
s64 tmp;
struct timespec ts;
unsigned long t1,t2,t3;
unsigned long flags;
/* Though tsk->delays accessed later, early exit avoids
* unnecessary returning of other data
*/
if (!tsk->delays)
goto done;
tmp = (s64)d->cpu_run_real_total;
cputime_to_timespec(tsk->utime + tsk->stime, &ts);
tmp += timespec_to_ns(&ts);
d->cpu_run_real_total = (tmp < (s64)d->cpu_run_real_total) ? 0 : tmp;
/*
* No locking available for sched_info (and too expensive to add one)
* Mitigate by taking snapshot of values
*/
t1 = tsk->sched_info.pcnt;
t2 = tsk->sched_info.run_delay;
t3 = tsk->sched_info.cpu_time;
d->cpu_count += t1;
jiffies_to_timespec(t2, &ts);
tmp = (s64)d->cpu_delay_total + timespec_to_ns(&ts);
d->cpu_delay_total = (tmp < (s64)d->cpu_delay_total) ? 0 : tmp;
tmp = (s64)d->cpu_run_virtual_total + (s64)jiffies_to_usecs(t3) * 1000;
d->cpu_run_virtual_total =
(tmp < (s64)d->cpu_run_virtual_total) ? 0 : tmp;
/* zero XXX_total, non-zero XXX_count implies XXX stat overflowed */
spin_lock_irqsave(&tsk->delays->lock, flags);
tmp = d->blkio_delay_total + tsk->delays->blkio_delay;
d->blkio_delay_total = (tmp < d->blkio_delay_total) ? 0 : tmp;
tmp = d->swapin_delay_total + tsk->delays->swapin_delay;
d->swapin_delay_total = (tmp < d->swapin_delay_total) ? 0 : tmp;
d->blkio_count += tsk->delays->blkio_count;
d->swapin_count += tsk->delays->swapin_count;
spin_unlock_irqrestore(&tsk->delays->lock, flags);
done:
return 0;
}
/**
* set the scheduler internally in the Linux kernel.
*/
static int edf_set_scheduler(resch_task_t *rt, int prio)
{
struct sched_param sp;
struct sched_param_ex spx;
struct timespec ts_period, ts_deadline, ts_runtime;
jiffies_to_timespec(rt->period, &ts_period);
jiffies_to_timespec(rt->deadline, &ts_deadline);
jiffies_to_timespec(usecs_to_jiffies(rt->runtime), &ts_runtime);
sp.sched_priority = 0;
spx.sched_priority = 0;
spx.sched_period = ts_period;
spx.sched_deadline = ts_deadline;
spx.sched_runtime = ts_runtime;
spx.sched_flags = 0;
if (sched_setscheduler_ex(rt->task, SCHED_DEADLINE, &sp, &spx) < 0) {
printk(KERN_WARNING "RESCH: edf_set_scheduler() failed.\n");
printk(KERN_WARNING "RESCH: task#%d (process#%d) priority=%d.\n",
rt->rid, rt->task->pid, prio);
return false;
}
rt->prio = prio;
if (task_has_reserve(rt)) {
rt->task->dl.flags &= ~SCHED_EXHAUSTIVE;
rt->task->dl.flags |= SCHED_FCBS;
/* you can additionally set the following flags, if wanted.
rt->task->dl.flags |= SCHED_FCBS_NO_CATCH_UP; */
}
else {
rt->task->dl.flags |= SCHED_EXHAUSTIVE;
rt->task->dl.flags &= ~SCHED_FCBS;
}
return true;
}
/**
* wait until the next period.
*/
static void edf_wait_period(resch_task_t *rt)
{
struct timespec ts_period;
if (rt->release_time > jiffies) {
jiffies_to_timespec(rt->release_time - jiffies, &ts_period);
}
else {
ts_period.tv_sec = 0;
ts_period.tv_nsec = 0;
}
if (rt->task->dl.flags & SCHED_EXHAUSTIVE) {
rt->task->dl.deadline = cpu_clock(smp_processor_id());
}
sched_wait_interval(!TIMER_ABSTIME, &ts_period, NULL);
}
/**
* start the accounting on the reserve of the given task in SCHED_DEADLINE.
* if the task is properly requested to reserve CPU time through the API,
* we do nothing here, since it is handled by SCHED_DEADLINE.
* otherwise, we consider this is a request to forcefully account CPU time.
* the latter case is useful if the kernel functions want to account CPU
* time, but do not want to use the CBS policy.
*/
static void edf_start_account(resch_task_t *rt)
{
/* set the budget explicitly, only if the task is not requested to
reserve CPU time through the API. */
if (!task_has_reserve(rt)) {
struct timespec ts;
jiffies_to_timespec(rt->budget, &ts);
rt->task->dl.runtime = timespec_to_ns(&ts);
}
/* set the flag to notify applications when the budget is exhausted. */
if (rt->xcpu) {
rt->task->dl.flags |= SCHED_SIG_RORUN;
}
/* make sure to use Flexible CBS. */
rt->task->dl.flags &= ~SCHED_EXHAUSTIVE;
rt->task->dl.flags |= SCHED_FCBS;
}
/*
* fnic_get_stats_data - Copy fnic stats buffer to a memory file
* @fnic_dbgfs_t: pointer to debugfs fnic stats buffer
*
* Description:
* This routine gathers the fnic stats debugfs data from the fnic_stats struct
* and dumps it to stats_debug_info.
*
* Return Value:
* This routine returns the amount of bytes that were dumped into
* stats_debug_info
*/
int fnic_get_stats_data(struct stats_debug_info *debug,
struct fnic_stats *stats)
{
int len = 0;
int buf_size = debug->buf_size;
struct timespec val1, val2;
len = snprintf(debug->debug_buffer + len, buf_size - len,
"------------------------------------------\n"
"\t\tIO Statistics\n"
"------------------------------------------\n");
len += snprintf(debug->debug_buffer + len, buf_size - len,
"Number of Active IOs: %lld\nMaximum Active IOs: %lld\n"
"Number of IOs: %lld\nNumber of IO Completions: %lld\n"
"Number of IO Failures: %lld\nNumber of IO NOT Found: %lld\n"
"Number of Memory alloc Failures: %lld\n"
"Number of IOREQ Null: %lld\n"
"Number of SCSI cmd pointer Null: %lld\n",
(u64)atomic64_read(&stats->io_stats.active_ios),
(u64)atomic64_read(&stats->io_stats.max_active_ios),
(u64)atomic64_read(&stats->io_stats.num_ios),
(u64)atomic64_read(&stats->io_stats.io_completions),
(u64)atomic64_read(&stats->io_stats.io_failures),
(u64)atomic64_read(&stats->io_stats.io_not_found),
(u64)atomic64_read(&stats->io_stats.alloc_failures),
(u64)atomic64_read(&stats->io_stats.ioreq_null),
(u64)atomic64_read(&stats->io_stats.sc_null));
len += snprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tAbort Statistics\n"
"------------------------------------------\n");
len += snprintf(debug->debug_buffer + len, buf_size - len,
"Number of Aborts: %lld\n"
"Number of Abort Failures: %lld\n"
"Number of Abort Driver Timeouts: %lld\n"
"Number of Abort FW Timeouts: %lld\n"
"Number of Abort IO NOT Found: %lld\n",
(u64)atomic64_read(&stats->abts_stats.aborts),
(u64)atomic64_read(&stats->abts_stats.abort_failures),
(u64)atomic64_read(&stats->abts_stats.abort_drv_timeouts),
(u64)atomic64_read(&stats->abts_stats.abort_fw_timeouts),
(u64)atomic64_read(&stats->abts_stats.abort_io_not_found));
len += snprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tTerminate Statistics\n"
"------------------------------------------\n");
len += snprintf(debug->debug_buffer + len, buf_size - len,
"Number of Terminates: %lld\n"
"Maximum Terminates: %lld\n"
"Number of Terminate Driver Timeouts: %lld\n"
"Number of Terminate FW Timeouts: %lld\n"
"Number of Terminate IO NOT Found: %lld\n"
"Number of Terminate Failures: %lld\n",
(u64)atomic64_read(&stats->term_stats.terminates),
(u64)atomic64_read(&stats->term_stats.max_terminates),
(u64)atomic64_read(&stats->term_stats.terminate_drv_timeouts),
(u64)atomic64_read(&stats->term_stats.terminate_fw_timeouts),
(u64)atomic64_read(&stats->term_stats.terminate_io_not_found),
(u64)atomic64_read(&stats->term_stats.terminate_failures));
len += snprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tReset Statistics\n"
"------------------------------------------\n");
len += snprintf(debug->debug_buffer + len, buf_size - len,
"Number of Device Resets: %lld\n"
"Number of Device Reset Failures: %lld\n"
"Number of Device Reset Aborts: %lld\n"
"Number of Device Reset Timeouts: %lld\n"
"Number of Device Reset Terminates: %lld\n"
"Number of FW Resets: %lld\n"
"Number of FW Reset Completions: %lld\n"
"Number of FW Reset Failures: %lld\n"
"Number of Fnic Reset: %lld\n"
"Number of Fnic Reset Completions: %lld\n"
"Number of Fnic Reset Failures: %lld\n",
(u64)atomic64_read(&stats->reset_stats.device_resets),
(u64)atomic64_read(&stats->reset_stats.device_reset_failures),
(u64)atomic64_read(&stats->reset_stats.device_reset_aborts),
(u64)atomic64_read(&stats->reset_stats.device_reset_timeouts),
(u64)atomic64_read(
&stats->reset_stats.device_reset_terminates),
(u64)atomic64_read(&stats->reset_stats.fw_resets),
(u64)atomic64_read(&stats->reset_stats.fw_reset_completions),
(u64)atomic64_read(&stats->reset_stats.fw_reset_failures),
(u64)atomic64_read(&stats->reset_stats.fnic_resets),
(u64)atomic64_read(
&stats->reset_stats.fnic_reset_completions),
(u64)atomic64_read(&stats->reset_stats.fnic_reset_failures));
len += snprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tFirmware Statistics\n"
"------------------------------------------\n");
len += snprintf(debug->debug_buffer + len, buf_size - len,
"Number of Active FW Requests %lld\n"
"Maximum FW Requests: %lld\n"
"Number of FW out of resources: %lld\n"
"Number of FW IO errors: %lld\n",
(u64)atomic64_read(&stats->fw_stats.active_fw_reqs),
(u64)atomic64_read(&stats->fw_stats.max_fw_reqs),
(u64)atomic64_read(&stats->fw_stats.fw_out_of_resources),
(u64)atomic64_read(&stats->fw_stats.io_fw_errs));
len += snprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tVlan Discovery Statistics\n"
"------------------------------------------\n");
len += snprintf(debug->debug_buffer + len, buf_size - len,
"Number of Vlan Discovery Requests Sent %lld\n"
"Vlan Response Received with no FCF VLAN ID: %lld\n"
"No solicitations recvd after vlan set, expiry count: %lld\n"
"Flogi rejects count: %lld\n",
(u64)atomic64_read(&stats->vlan_stats.vlan_disc_reqs),
(u64)atomic64_read(&stats->vlan_stats.resp_withno_vlanID),
(u64)atomic64_read(&stats->vlan_stats.sol_expiry_count),
(u64)atomic64_read(&stats->vlan_stats.flogi_rejects));
len += snprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tOther Important Statistics\n"
"------------------------------------------\n");
jiffies_to_timespec(stats->misc_stats.last_isr_time, &val1);
jiffies_to_timespec(stats->misc_stats.last_ack_time, &val2);
len += snprintf(debug->debug_buffer + len, buf_size - len,
"Last ISR time: %llu (%8lu.%8lu)\n"
"Last ACK time: %llu (%8lu.%8lu)\n"
"Number of ISRs: %lld\n"
"Maximum CQ Entries: %lld\n"
"Number of ACK index out of range: %lld\n"
"Number of data count mismatch: %lld\n"
"Number of FCPIO Timeouts: %lld\n"
"Number of FCPIO Aborted: %lld\n"
"Number of SGL Invalid: %lld\n"
"Number of Copy WQ Alloc Failures for ABTs: %lld\n"
"Number of Copy WQ Alloc Failures for Device Reset: %lld\n"
"Number of Copy WQ Alloc Failures for IOs: %lld\n"
"Number of no icmnd itmf Completions: %lld\n"
"Number of QUEUE Fulls: %lld\n"
"Number of rport not ready: %lld\n"
"Number of receive frame errors: %lld\n",
(u64)stats->misc_stats.last_isr_time,
val1.tv_sec, val1.tv_nsec,
(u64)stats->misc_stats.last_ack_time,
val2.tv_sec, val2.tv_nsec,
(u64)atomic64_read(&stats->misc_stats.isr_count),
(u64)atomic64_read(&stats->misc_stats.max_cq_entries),
(u64)atomic64_read(&stats->misc_stats.ack_index_out_of_range),
(u64)atomic64_read(&stats->misc_stats.data_count_mismatch),
(u64)atomic64_read(&stats->misc_stats.fcpio_timeout),
(u64)atomic64_read(&stats->misc_stats.fcpio_aborted),
(u64)atomic64_read(&stats->misc_stats.sgl_invalid),
(u64)atomic64_read(
&stats->misc_stats.abts_cpwq_alloc_failures),
(u64)atomic64_read(
&stats->misc_stats.devrst_cpwq_alloc_failures),
(u64)atomic64_read(&stats->misc_stats.io_cpwq_alloc_failures),
(u64)atomic64_read(&stats->misc_stats.no_icmnd_itmf_cmpls),
(u64)atomic64_read(&stats->misc_stats.queue_fulls),
(u64)atomic64_read(&stats->misc_stats.rport_not_ready),
(u64)atomic64_read(&stats->misc_stats.frame_errors));
return len;
}
/*
* fnic_get_trace_data - Copy trace buffer to a memory file
* @fnic_dbgfs_t: pointer to debugfs trace buffer
*
* Description:
* This routine gathers the fnic trace debugfs data from the fnic_trace_data_t
* buffer and dumps it to fnic_dbgfs_t. It will start at the rd_idx entry in
* the log and process the log until the end of the buffer. Then it will gather
* from the beginning of the log and process until the current entry @wr_idx.
*
* Return Value:
* This routine returns the amount of bytes that were dumped into fnic_dbgfs_t
*/
int fnic_get_trace_data(fnic_dbgfs_t *fnic_dbgfs_prt)
{
int rd_idx;
int wr_idx;
int len = 0;
unsigned long flags;
char str[KSYM_SYMBOL_LEN];
struct timespec val;
fnic_trace_data_t *tbp;
spin_lock_irqsave(&fnic_trace_lock, flags);
rd_idx = fnic_trace_entries.rd_idx;
wr_idx = fnic_trace_entries.wr_idx;
if (wr_idx < rd_idx) {
while (1) {
/* Start from read index @rd_idx */
tbp = (fnic_trace_data_t *)
fnic_trace_entries.page_offset[rd_idx];
if (!tbp) {
spin_unlock_irqrestore(&fnic_trace_lock, flags);
return 0;
}
/* Convert function pointer to function name */
if (sizeof(unsigned long) < 8) {
sprint_symbol(str, tbp->fnaddr.low);
jiffies_to_timespec(tbp->timestamp.low, &val);
} else {
sprint_symbol(str, tbp->fnaddr.val);
jiffies_to_timespec(tbp->timestamp.val, &val);
}
/*
* Dump trace buffer entry to memory file
* and increment read index @rd_idx
*/
len += snprintf(fnic_dbgfs_prt->buffer + len,
(trace_max_pages * PAGE_SIZE * 3) - len,
"%16lu.%16lu %-50s %8x %8x %16llx %16llx "
"%16llx %16llx %16llx\n", val.tv_sec,
val.tv_nsec, str, tbp->host_no, tbp->tag,
tbp->data[0], tbp->data[1], tbp->data[2],
tbp->data[3], tbp->data[4]);
rd_idx++;
/*
* If rd_idx is reached to maximum trace entries
* then move rd_idx to zero
*/
if (rd_idx > (fnic_max_trace_entries-1))
rd_idx = 0;
/*
* Continure dumpping trace buffer entries into
* memory file till rd_idx reaches write index
*/
if (rd_idx == wr_idx)
break;
}
} else if (wr_idx > rd_idx) {
while (1) {
/* Start from read index @rd_idx */
tbp = (fnic_trace_data_t *)
fnic_trace_entries.page_offset[rd_idx];
if (!tbp) {
spin_unlock_irqrestore(&fnic_trace_lock, flags);
return 0;
}
/* Convert function pointer to function name */
if (sizeof(unsigned long) < 8) {
sprint_symbol(str, tbp->fnaddr.low);
jiffies_to_timespec(tbp->timestamp.low, &val);
} else {
sprint_symbol(str, tbp->fnaddr.val);
jiffies_to_timespec(tbp->timestamp.val, &val);
}
/*
* Dump trace buffer entry to memory file
* and increment read index @rd_idx
*/
len += snprintf(fnic_dbgfs_prt->buffer + len,
(trace_max_pages * PAGE_SIZE * 3) - len,
"%16lu.%16lu %-50s %8x %8x %16llx %16llx "
"%16llx %16llx %16llx\n", val.tv_sec,
val.tv_nsec, str, tbp->host_no, tbp->tag,
tbp->data[0], tbp->data[1], tbp->data[2],
tbp->data[3], tbp->data[4]);
rd_idx++;
/*
* Continue dumpping trace buffer entries into
* memory file till rd_idx reaches write index
*/
if (rd_idx == wr_idx)
break;
}
}
spin_unlock_irqrestore(&fnic_trace_lock, flags);
return len;
}
/*
* snic_stats_show - Formats and prints per host specific driver stats.
*/
static int
snic_stats_show(struct seq_file *sfp, void *data)
{
struct snic *snic = (struct snic *) sfp->private;
struct snic_stats *stats = &snic->s_stats;
struct timespec last_isr_tms, last_ack_tms;
u64 maxio_tm;
int i;
/* Dump IO Stats */
seq_printf(sfp,
"------------------------------------------\n"
"\t\t IO Statistics\n"
"------------------------------------------\n");
maxio_tm = (u64) atomic64_read(&stats->io.max_time);
seq_printf(sfp,
"Active IOs : %lld\n"
"Max Active IOs : %lld\n"
"Total IOs : %lld\n"
"IOs Completed : %lld\n"
"IOs Failed : %lld\n"
"IOs Not Found : %lld\n"
"Memory Alloc Failures : %lld\n"
"REQs Null : %lld\n"
"SCSI Cmd Pointers Null : %lld\n"
"Max SGL for any IO : %lld\n"
"Max IO Size : %lld Sectors\n"
"Max Queuing Time : %lld\n"
"Max Completion Time : %lld\n"
"Max IO Process Time(FW) : %lld (%u msec)\n",
(u64) atomic64_read(&stats->io.active),
(u64) atomic64_read(&stats->io.max_active),
(u64) atomic64_read(&stats->io.num_ios),
(u64) atomic64_read(&stats->io.compl),
(u64) atomic64_read(&stats->io.fail),
(u64) atomic64_read(&stats->io.io_not_found),
(u64) atomic64_read(&stats->io.alloc_fail),
(u64) atomic64_read(&stats->io.req_null),
(u64) atomic64_read(&stats->io.sc_null),
(u64) atomic64_read(&stats->io.max_sgl),
(u64) atomic64_read(&stats->io.max_io_sz),
(u64) atomic64_read(&stats->io.max_qtime),
(u64) atomic64_read(&stats->io.max_cmpl_time),
maxio_tm,
jiffies_to_msecs(maxio_tm));
seq_puts(sfp, "\nSGL Counters\n");
for (i = 0; i < SNIC_MAX_SG_DESC_CNT; i++) {
seq_printf(sfp,
"%10lld ",
(u64) atomic64_read(&stats->io.sgl_cnt[i]));
if ((i + 1) % 8 == 0)
seq_puts(sfp, "\n");
}
/* Dump Abort Stats */
seq_printf(sfp,
"\n-------------------------------------------\n"
"\t\t Abort Statistics\n"
"---------------------------------------------\n");
seq_printf(sfp,
"Aborts : %lld\n"
"Aborts Fail : %lld\n"
"Aborts Driver Timeout : %lld\n"
"Abort FW Timeout : %lld\n"
"Abort IO NOT Found : %lld\n"
"Abort Queuing Failed : %lld\n",
(u64) atomic64_read(&stats->abts.num),
(u64) atomic64_read(&stats->abts.fail),
(u64) atomic64_read(&stats->abts.drv_tmo),
(u64) atomic64_read(&stats->abts.fw_tmo),
(u64) atomic64_read(&stats->abts.io_not_found),
(u64) atomic64_read(&stats->abts.q_fail));
/* Dump Reset Stats */
seq_printf(sfp,
"\n-------------------------------------------\n"
"\t\t Reset Statistics\n"
"---------------------------------------------\n");
seq_printf(sfp,
"HBA Resets : %lld\n"
"HBA Reset Cmpls : %lld\n"
"HBA Reset Fail : %lld\n",
(u64) atomic64_read(&stats->reset.hba_resets),
(u64) atomic64_read(&stats->reset.hba_reset_cmpl),
(u64) atomic64_read(&stats->reset.hba_reset_fail));
/* Dump Firmware Stats */
seq_printf(sfp,
"\n-------------------------------------------\n"
"\t\t Firmware Statistics\n"
"---------------------------------------------\n");
seq_printf(sfp,
"Active FW Requests : %lld\n"
"Max FW Requests : %lld\n"
"FW Out Of Resource Errs : %lld\n"
"FW IO Errors : %lld\n"
"FW SCSI Errors : %lld\n",
(u64) atomic64_read(&stats->fw.actv_reqs),
(u64) atomic64_read(&stats->fw.max_actv_reqs),
(u64) atomic64_read(&stats->fw.out_of_res),
(u64) atomic64_read(&stats->fw.io_errs),
(u64) atomic64_read(&stats->fw.scsi_errs));
/* Dump Miscellenous Stats */
seq_printf(sfp,
"\n---------------------------------------------\n"
"\t\t Other Statistics\n"
"\n---------------------------------------------\n");
jiffies_to_timespec(stats->misc.last_isr_time, &last_isr_tms);
jiffies_to_timespec(stats->misc.last_ack_time, &last_ack_tms);
seq_printf(sfp,
"Last ISR Time : %llu (%8lu.%8lu)\n"
"Last Ack Time : %llu (%8lu.%8lu)\n"
"Ack ISRs : %llu\n"
"IO Cmpl ISRs : %llu\n"
"Err Notify ISRs : %llu\n"
"Max CQ Entries : %lld\n"
"Data Count Mismatch : %lld\n"
"IOs w/ Timeout Status : %lld\n"
"IOs w/ Aborted Status : %lld\n"
"IOs w/ SGL Invalid Stat : %lld\n"
"WQ Desc Alloc Fail : %lld\n"
"Queue Full : %lld\n"
"Queue Ramp Up : %lld\n"
"Queue Ramp Down : %lld\n"
"Queue Last Queue Depth : %lld\n"
"Target Not Ready : %lld\n",
(u64) stats->misc.last_isr_time,
last_isr_tms.tv_sec, last_isr_tms.tv_nsec,
(u64)stats->misc.last_ack_time,
last_ack_tms.tv_sec, last_ack_tms.tv_nsec,
(u64) atomic64_read(&stats->misc.ack_isr_cnt),
(u64) atomic64_read(&stats->misc.cmpl_isr_cnt),
(u64) atomic64_read(&stats->misc.errnotify_isr_cnt),
(u64) atomic64_read(&stats->misc.max_cq_ents),
(u64) atomic64_read(&stats->misc.data_cnt_mismat),
(u64) atomic64_read(&stats->misc.io_tmo),
(u64) atomic64_read(&stats->misc.io_aborted),
(u64) atomic64_read(&stats->misc.sgl_inval),
(u64) atomic64_read(&stats->misc.wq_alloc_fail),
(u64) atomic64_read(&stats->misc.qfull),
(u64) atomic64_read(&stats->misc.qsz_rampup),
(u64) atomic64_read(&stats->misc.qsz_rampdown),
(u64) atomic64_read(&stats->misc.last_qsz),
(u64) atomic64_read(&stats->misc.tgt_not_rdy));
return 0;
}
