[S390] qdio: convert global statistics to per-device stats
Jan Glauber [Mon, 4 Jan 2010 08:05:42 +0000 (09:05 +0100)]
Revamp the qdio performance statistics and move them from procfs to
debugfs using the seq_file interface. Since the statistics are not
intended for the general user the removal of /proc/qdio_perf should
not surprise anyone.

The per device statistics are disabled by default, writing 1 to
/<debugfs mountpoint>/qdio/<device bus ID>/statistics enables the
statistics for the given device.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

drivers/s390/cio/Makefile
drivers/s390/cio/qdio.h
drivers/s390/cio/qdio_debug.c
drivers/s390/cio/qdio_main.c
drivers/s390/cio/qdio_perf.c [deleted file]
drivers/s390/cio/qdio_perf.h [deleted file]
drivers/s390/cio/qdio_thinint.c

index d033414..e1b700a 100644 (file)
@@ -10,5 +10,5 @@ obj-y += ccw_device.o cmf.o
 obj-$(CONFIG_CHSC_SCH) += chsc_sch.o
 obj-$(CONFIG_CCWGROUP) += ccwgroup.o
 
-qdio-objs := qdio_main.o qdio_thinint.o qdio_debug.o qdio_perf.o qdio_setup.o
+qdio-objs := qdio_main.o qdio_thinint.o qdio_debug.o qdio_setup.o
 obj-$(CONFIG_QDIO) += qdio.o
index ff7748a..44f2f6a 100644 (file)
@@ -182,6 +182,34 @@ struct scssc_area {
        u32:32;
 } __attribute__ ((packed));
 
+struct qdio_dev_perf_stat {
+       unsigned int adapter_int;
+       unsigned int qdio_int;
+       unsigned int pci_request_int;
+
+       unsigned int tasklet_inbound;
+       unsigned int tasklet_inbound_resched;
+       unsigned int tasklet_inbound_resched2;
+       unsigned int tasklet_outbound;
+
+       unsigned int siga_read;
+       unsigned int siga_write;
+       unsigned int siga_sync;
+
+       unsigned int inbound_call;
+       unsigned int inbound_handler;
+       unsigned int stop_polling;
+       unsigned int inbound_queue_full;
+       unsigned int outbound_call;
+       unsigned int outbound_handler;
+       unsigned int fast_requeue;
+       unsigned int target_full;
+       unsigned int eqbs;
+       unsigned int eqbs_partial;
+       unsigned int sqbs;
+       unsigned int sqbs_partial;
+};
+
 struct qdio_input_q {
        /* input buffer acknowledgement flag */
        int polling;
@@ -269,6 +297,7 @@ struct qdio_irq {
        u32 *dsci;              /* address of device state change indicator */
        struct ccw_device *cdev;
        struct dentry *debugfs_dev;
+       struct dentry *debugfs_perf;
 
        unsigned long int_parm;
        struct subchannel_id schid;
@@ -286,9 +315,10 @@ struct qdio_irq {
        struct ciw aqueue;
 
        struct qdio_ssqd_desc ssqd_desc;
-
        void (*orig_handler) (struct ccw_device *, unsigned long, struct irb *);
 
+       struct qdio_dev_perf_stat perf_stat;
+       int perf_stat_enabled;
        /*
         * Warning: Leave these members together at the end so they won't be
         * cleared in qdio_setup_irq.
@@ -311,6 +341,10 @@ struct qdio_irq {
        (irq->qib.qfmt == QDIO_IQDIO_QFMT || \
         css_general_characteristics.aif_osa)
 
+#define qperf(qdev,attr)       qdev->perf_stat.attr
+#define qperf_inc(q,attr)      if (q->irq_ptr->perf_stat_enabled) \
+                                       q->irq_ptr->perf_stat.attr++
+
 /* the highest iqdio queue is used for multicast */
 static inline int multicast_outbound(struct qdio_q *q)
 {
index 7676997..f49761f 100644 (file)
@@ -55,13 +55,11 @@ static int qstat_show(struct seq_file *m, void *v)
        if (!q)
                return 0;
 
-       seq_printf(m, "device state indicator: %d\n", *(u32 *)q->irq_ptr->dsci);
-       seq_printf(m, "nr_used: %d\n", atomic_read(&q->nr_buf_used));
-       seq_printf(m, "ftc: %d\n", q->first_to_check);
-       seq_printf(m, "last_move: %d\n", q->last_move);
-       seq_printf(m, "polling: %d\n", q->u.in.polling);
-       seq_printf(m, "ack start: %d\n", q->u.in.ack_start);
-       seq_printf(m, "ack count: %d\n", q->u.in.ack_count);
+       seq_printf(m, "DSCI: %d   nr_used: %d\n",
+                  *(u32 *)q->irq_ptr->dsci, atomic_read(&q->nr_buf_used));
+       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, "|0      |8      |16     |24     |32     |40     |48     |56  63|\n");
 
@@ -110,7 +108,6 @@ static ssize_t qstat_seq_write(struct file *file, const char __user *buf,
 
        if (!q)
                return 0;
-
        if (q->is_input_q)
                xchg(q->irq_ptr->dsci, 1);
        local_bh_disable();
@@ -134,6 +131,98 @@ static const struct file_operations debugfs_fops = {
        .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 fast_requeue",
+       "Outbound target_full",
+       "QEBSM eqbs",
+       "QEBSM eqbs partial",
+       "QEBSM sqbs",
+       "QEBSM sqbs partial"
+};
+
+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;
+       unsigned long val;
+       char buf[8];
+       int ret;
+
+       if (!irq_ptr)
+               return 0;
+       if (count >= sizeof(buf))
+               return -EINVAL;
+       if (copy_from_user(&buf, ubuf, count))
+               return -EFAULT;
+       buf[count] = 0;
+
+       ret = strict_strtoul(buf, 10, &val);
+       if (ret < 0)
+               return ret;
+
+       switch (val) {
+       case 0:
+               irq_ptr->perf_stat_enabled = 0;
+               memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat));
+               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];
@@ -156,6 +245,14 @@ void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
                                                  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)
@@ -171,6 +268,7 @@ void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cd
                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);
 }
 
index b2275c5..999fe80 100644 (file)
@@ -22,7 +22,6 @@
 #include "device.h"
 #include "qdio.h"
 #include "qdio_debug.h"
-#include "qdio_perf.h"
 
 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>,"\
        "Jan Glauber <jang@linux.vnet.ibm.com>");
@@ -126,7 +125,7 @@ static int qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
        int rc;
 
        BUG_ON(!q->irq_ptr->sch_token);
-       qdio_perf_stat_inc(&perf_stats.debug_eqbs_all);
+       qperf_inc(q, eqbs);
 
        if (!q->is_input_q)
                nr += q->irq_ptr->nr_input_qs;
@@ -139,7 +138,7 @@ again:
         * buffers later.
         */
        if ((ccq == 96) && (count != tmp_count)) {
-               qdio_perf_stat_inc(&perf_stats.debug_eqbs_incomplete);
+               qperf_inc(q, eqbs_partial);
                return (count - tmp_count);
        }
 
@@ -182,7 +181,7 @@ static int qdio_do_sqbs(struct qdio_q *q, unsigned char state, int start,
                return 0;
 
        BUG_ON(!q->irq_ptr->sch_token);
-       qdio_perf_stat_inc(&perf_stats.debug_sqbs_all);
+       qperf_inc(q, sqbs);
 
        if (!q->is_input_q)
                nr += q->irq_ptr->nr_input_qs;
@@ -191,7 +190,7 @@ again:
        rc = qdio_check_ccq(q, ccq);
        if (rc == 1) {
                DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "SQBS again:%2d", ccq);
-               qdio_perf_stat_inc(&perf_stats.debug_sqbs_incomplete);
+               qperf_inc(q, sqbs_partial);
                goto again;
        }
        if (rc < 0) {
@@ -285,7 +284,7 @@ static inline int qdio_siga_sync(struct qdio_q *q, unsigned int output,
                return 0;
 
        DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "siga-s:%1d", q->nr);
-       qdio_perf_stat_inc(&perf_stats.siga_sync);
+       qperf_inc(q, siga_sync);
 
        cc = do_siga_sync(q->irq_ptr->schid, output, input);
        if (cc)
@@ -350,7 +349,7 @@ static inline int qdio_siga_input(struct qdio_q *q)
        int cc;
 
        DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "siga-r:%1d", q->nr);
-       qdio_perf_stat_inc(&perf_stats.siga_in);
+       qperf_inc(q, siga_read);
 
        cc = do_siga_input(q->irq_ptr->schid, q->mask);
        if (cc)
@@ -382,7 +381,7 @@ static inline void qdio_stop_polling(struct qdio_q *q)
                return;
 
        q->u.in.polling = 0;
-       qdio_perf_stat_inc(&perf_stats.debug_stop_polling);
+       qperf_inc(q, stop_polling);
 
        /* show the card that we are not polling anymore */
        if (is_qebsm(q)) {
@@ -400,7 +399,7 @@ static void announce_buffer_error(struct qdio_q *q, int count)
        /* special handling for no target buffer empty */
        if ((!q->is_input_q &&
            (q->sbal[q->first_to_check]->element[15].flags & 0xff) == 0x10)) {
-               qdio_perf_stat_inc(&perf_stats.outbound_target_full);
+               qperf_inc(q, target_full);
                DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "OUTFULL FTC:%02x",
                              q->first_to_check);
                return;
@@ -487,7 +486,7 @@ static int get_inbound_buffer_frontier(struct qdio_q *q)
                inbound_primed(q, count);
                q->first_to_check = add_buf(q->first_to_check, count);
                if (atomic_sub(count, &q->nr_buf_used) == 0)
-                       qdio_perf_stat_inc(&perf_stats.inbound_queue_full);
+                       qperf_inc(q, inbound_queue_full);
                break;
        case SLSB_P_INPUT_ERROR:
                announce_buffer_error(q, count);
@@ -567,9 +566,10 @@ static void qdio_kick_handler(struct qdio_q *q)
        count = sub_buf(end, start);
 
        if (q->is_input_q) {
-               qdio_perf_stat_inc(&perf_stats.inbound_handler);
+               qperf_inc(q, inbound_handler);
                DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kih s:%02x c:%02x", start, count);
        } else
+               qperf_inc(q, outbound_handler);
                DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "koh: s:%02x c:%02x",
                              start, count);
 
@@ -583,24 +583,28 @@ static void qdio_kick_handler(struct qdio_q *q)
 
 static void __qdio_inbound_processing(struct qdio_q *q)
 {
-       qdio_perf_stat_inc(&perf_stats.tasklet_inbound);
+       qperf_inc(q, tasklet_inbound);
 again:
        if (!qdio_inbound_q_moved(q))
                return;
 
        qdio_kick_handler(q);
 
-       if (!qdio_inbound_q_done(q))
+       if (!qdio_inbound_q_done(q)) {
                /* means poll time is not yet over */
+               qperf_inc(q, tasklet_inbound_resched);
                goto again;
+       }
 
        qdio_stop_polling(q);
        /*
         * We need to check again to not lose initiative after
         * resetting the ACK state.
         */
-       if (!qdio_inbound_q_done(q))
+       if (!qdio_inbound_q_done(q)) {
+               qperf_inc(q, tasklet_inbound_resched2);
                goto again;
+       }
 }
 
 void qdio_inbound_processing(unsigned long data)
@@ -688,7 +692,7 @@ static int qdio_kick_outbound_q(struct qdio_q *q)
                return 0;
 
        DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "siga-w:%1d", q->nr);
-       qdio_perf_stat_inc(&perf_stats.siga_out);
+       qperf_inc(q, siga_write);
 
        cc = qdio_siga_output(q, &busy_bit);
        switch (cc) {
@@ -711,7 +715,7 @@ static int qdio_kick_outbound_q(struct qdio_q *q)
 
 static void __qdio_outbound_processing(struct qdio_q *q)
 {
-       qdio_perf_stat_inc(&perf_stats.tasklet_outbound);
+       qperf_inc(q, tasklet_outbound);
        BUG_ON(atomic_read(&q->nr_buf_used) < 0);
 
        if (qdio_outbound_q_moved(q))
@@ -739,12 +743,9 @@ static void __qdio_outbound_processing(struct qdio_q *q)
         */
        if (qdio_outbound_q_done(q))
                del_timer(&q->u.out.timer);
-       else {
-               if (!timer_pending(&q->u.out.timer)) {
+       else
+               if (!timer_pending(&q->u.out.timer))
                        mod_timer(&q->u.out.timer, jiffies + 10 * HZ);
-                       qdio_perf_stat_inc(&perf_stats.debug_tl_out_timer);
-               }
-       }
        return;
 
 sched:
@@ -784,7 +785,7 @@ static inline void qdio_check_outbound_after_thinint(struct qdio_q *q)
 
 static void __tiqdio_inbound_processing(struct qdio_q *q)
 {
-       qdio_perf_stat_inc(&perf_stats.thinint_inbound);
+       qperf_inc(q, tasklet_inbound);
        qdio_sync_after_thinint(q);
 
        /*
@@ -799,7 +800,7 @@ static void __tiqdio_inbound_processing(struct qdio_q *q)
        qdio_kick_handler(q);
 
        if (!qdio_inbound_q_done(q)) {
-               qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop);
+               qperf_inc(q, tasklet_inbound_resched);
                if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) {
                        tasklet_schedule(&q->tasklet);
                        return;
@@ -812,7 +813,7 @@ static void __tiqdio_inbound_processing(struct qdio_q *q)
         * resetting the ACK state.
         */
        if (!qdio_inbound_q_done(q)) {
-               qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop2);
+               qperf_inc(q, tasklet_inbound_resched2);
                if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED))
                        tasklet_schedule(&q->tasklet);
        }
@@ -851,8 +852,6 @@ static void qdio_int_handler_pci(struct qdio_irq *irq_ptr)
        if (unlikely(irq_ptr->state == QDIO_IRQ_STATE_STOPPED))
                return;
 
-       qdio_perf_stat_inc(&perf_stats.pci_int);
-
        for_each_input_queue(irq_ptr, q, i)
                tasklet_schedule(&q->tasklet);
 
@@ -923,8 +922,6 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
        struct qdio_irq *irq_ptr = cdev->private->qdio_data;
        int cstat, dstat;
 
-       qdio_perf_stat_inc(&perf_stats.qdio_int);
-
        if (!intparm || !irq_ptr) {
                DBF_ERROR("qint:%4x", cdev->private->schid.sch_no);
                return;
@@ -1383,6 +1380,8 @@ static int handle_inbound(struct qdio_q *q, unsigned int callflags,
 {
        int used, diff;
 
+       qperf_inc(q, inbound_call);
+
        if (!q->u.in.polling)
                goto set;
 
@@ -1438,14 +1437,16 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags,
        unsigned char state;
        int used, rc = 0;
 
-       qdio_perf_stat_inc(&perf_stats.outbound_handler);
+       qperf_inc(q, outbound_call);
 
        count = set_buf_states(q, bufnr, SLSB_CU_OUTPUT_PRIMED, count);
        used = atomic_add_return(count, &q->nr_buf_used);
        BUG_ON(used > QDIO_MAX_BUFFERS_PER_Q);
 
-       if (callflags & QDIO_FLAG_PCI_OUT)
+       if (callflags & QDIO_FLAG_PCI_OUT) {
                q->u.out.pci_out_enabled = 1;
+               qperf_inc(q, pci_request_int);
+       }
        else
                q->u.out.pci_out_enabled = 0;
 
@@ -1484,7 +1485,7 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags,
        if (state != SLSB_CU_OUTPUT_PRIMED)
                rc = qdio_kick_outbound_q(q);
        else
-               qdio_perf_stat_inc(&perf_stats.fast_requeue);
+               qperf_inc(q, fast_requeue);
 
 out:
        tasklet_schedule(&q->tasklet);
@@ -1540,16 +1541,11 @@ static int __init init_QDIO(void)
        rc = qdio_debug_init();
        if (rc)
                goto out_ti;
-       rc = qdio_setup_perf_stats();
-       if (rc)
-               goto out_debug;
        rc = tiqdio_register_thinints();
        if (rc)
-               goto out_perf;
+               goto out_debug;
        return 0;
 
-out_perf:
-       qdio_remove_perf_stats();
 out_debug:
        qdio_debug_exit();
 out_ti:
@@ -1563,7 +1559,6 @@ static void __exit exit_QDIO(void)
 {
        tiqdio_unregister_thinints();
        tiqdio_free_memory();
-       qdio_remove_perf_stats();
        qdio_debug_exit();
        qdio_setup_exit();
 }
diff --git a/drivers/s390/cio/qdio_perf.c b/drivers/s390/cio/qdio_perf.c
deleted file mode 100644 (file)
index 54f7c32..0000000
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- *  drivers/s390/cio/qdio_perf.c
- *
- *  Copyright IBM Corp. 2008
- *
- *  Author: Jan Glauber (jang@linux.vnet.ibm.com)
- */
-#include <linux/kernel.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <asm/ccwdev.h>
-
-#include "cio.h"
-#include "css.h"
-#include "device.h"
-#include "ioasm.h"
-#include "chsc.h"
-#include "qdio_debug.h"
-#include "qdio_perf.h"
-
-int qdio_performance_stats;
-struct qdio_perf_stats perf_stats;
-
-#ifdef CONFIG_PROC_FS
-static struct proc_dir_entry *qdio_perf_pde;
-#endif
-
-/*
- * procfs functions
- */
-static int qdio_perf_proc_show(struct seq_file *m, void *v)
-{
-       seq_printf(m, "Number of qdio interrupts\t\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.qdio_int));
-       seq_printf(m, "Number of PCI interrupts\t\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.pci_int));
-       seq_printf(m, "Number of adapter interrupts\t\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.thin_int));
-       seq_printf(m, "\n");
-       seq_printf(m, "Inbound tasklet runs\t\t\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.tasklet_inbound));
-       seq_printf(m, "Outbound tasklet runs\t\t\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.tasklet_outbound));
-       seq_printf(m, "Adapter interrupt tasklet runs/loops\t\t: %li/%li\n",
-                  (long)atomic_long_read(&perf_stats.tasklet_thinint),
-                  (long)atomic_long_read(&perf_stats.tasklet_thinint_loop));
-       seq_printf(m, "Adapter interrupt inbound tasklet runs/loops\t: %li/%li\n",
-                  (long)atomic_long_read(&perf_stats.thinint_inbound),
-                  (long)atomic_long_read(&perf_stats.thinint_inbound_loop));
-       seq_printf(m, "\n");
-       seq_printf(m, "Number of SIGA In issued\t\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.siga_in));
-       seq_printf(m, "Number of SIGA Out issued\t\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.siga_out));
-       seq_printf(m, "Number of SIGA Sync issued\t\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.siga_sync));
-       seq_printf(m, "\n");
-       seq_printf(m, "Number of inbound transfers\t\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.inbound_handler));
-       seq_printf(m, "Number of outbound transfers\t\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.outbound_handler));
-       seq_printf(m, "\n");
-       seq_printf(m, "Number of fast requeues (outg. SBAL w/o SIGA)\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.fast_requeue));
-       seq_printf(m, "Number of outbound target full condition\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.outbound_target_full));
-       seq_printf(m, "Number of inbound queue full condition\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.inbound_queue_full));
-       seq_printf(m, "Number of outbound tasklet mod_timer calls\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.debug_tl_out_timer));
-       seq_printf(m, "Number of stop polling calls\t\t\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.debug_stop_polling));
-       seq_printf(m, "AI inbound tasklet loops after stop polling\t: %li\n",
-                  (long)atomic_long_read(&perf_stats.thinint_inbound_loop2));
-       seq_printf(m, "QEBSM EQBS total/incomplete\t\t\t: %li/%li\n",
-                  (long)atomic_long_read(&perf_stats.debug_eqbs_all),
-                  (long)atomic_long_read(&perf_stats.debug_eqbs_incomplete));
-       seq_printf(m, "QEBSM SQBS total/incomplete\t\t\t: %li/%li\n",
-                  (long)atomic_long_read(&perf_stats.debug_sqbs_all),
-                  (long)atomic_long_read(&perf_stats.debug_sqbs_incomplete));
-       seq_printf(m, "\n");
-       return 0;
-}
-static int qdio_perf_seq_open(struct inode *inode, struct file *filp)
-{
-       return single_open(filp, qdio_perf_proc_show, NULL);
-}
-
-static const struct file_operations qdio_perf_proc_fops = {
-       .owner   = THIS_MODULE,
-       .open    = qdio_perf_seq_open,
-       .read    = seq_read,
-       .llseek  = seq_lseek,
-       .release = single_release,
-};
-
-/*
- * sysfs functions
- */
-static ssize_t qdio_perf_stats_show(struct bus_type *bus, char *buf)
-{
-       return sprintf(buf, "%i\n", qdio_performance_stats ? 1 : 0);
-}
-
-static ssize_t qdio_perf_stats_store(struct bus_type *bus,
-                             const char *buf, size_t count)
-{
-       unsigned long i;
-
-       if (strict_strtoul(buf, 16, &i) != 0)
-               return -EINVAL;
-       if ((i != 0) && (i != 1))
-               return -EINVAL;
-       if (i == qdio_performance_stats)
-               return count;
-
-       qdio_performance_stats = i;
-       /* reset performance statistics */
-       if (i == 0)
-               memset(&perf_stats, 0, sizeof(struct qdio_perf_stats));
-       return count;
-}
-
-static BUS_ATTR(qdio_performance_stats, 0644, qdio_perf_stats_show,
-               qdio_perf_stats_store);
-
-int __init qdio_setup_perf_stats(void)
-{
-       int rc;
-
-       rc = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
-       if (rc)
-               return rc;
-
-#ifdef CONFIG_PROC_FS
-       memset(&perf_stats, 0, sizeof(struct qdio_perf_stats));
-       qdio_perf_pde = proc_create("qdio_perf", S_IFREG | S_IRUGO,
-                                   NULL, &qdio_perf_proc_fops);
-#endif
-       return 0;
-}
-
-void qdio_remove_perf_stats(void)
-{
-#ifdef CONFIG_PROC_FS
-       remove_proc_entry("qdio_perf", NULL);
-#endif
-       bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
-}
diff --git a/drivers/s390/cio/qdio_perf.h b/drivers/s390/cio/qdio_perf.h
deleted file mode 100644 (file)
index 1245423..0000000
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- *  drivers/s390/cio/qdio_perf.h
- *
- *  Copyright IBM Corp. 2008
- *
- *  Author: Jan Glauber (jang@linux.vnet.ibm.com)
- */
-#ifndef QDIO_PERF_H
-#define QDIO_PERF_H
-
-#include <linux/types.h>
-#include <asm/atomic.h>
-
-struct qdio_perf_stats {
-       /* interrupt handler calls */
-       atomic_long_t qdio_int;
-       atomic_long_t pci_int;
-       atomic_long_t thin_int;
-
-       /* tasklet runs */
-       atomic_long_t tasklet_inbound;
-       atomic_long_t tasklet_outbound;
-       atomic_long_t tasklet_thinint;
-       atomic_long_t tasklet_thinint_loop;
-       atomic_long_t thinint_inbound;
-       atomic_long_t thinint_inbound_loop;
-       atomic_long_t thinint_inbound_loop2;
-
-       /* signal adapter calls */
-       atomic_long_t siga_out;
-       atomic_long_t siga_in;
-       atomic_long_t siga_sync;
-
-       /* misc */
-       atomic_long_t inbound_handler;
-       atomic_long_t outbound_handler;
-       atomic_long_t fast_requeue;
-       atomic_long_t outbound_target_full;
-       atomic_long_t inbound_queue_full;
-
-       /* for debugging */
-       atomic_long_t debug_tl_out_timer;
-       atomic_long_t debug_stop_polling;
-       atomic_long_t debug_eqbs_all;
-       atomic_long_t debug_eqbs_incomplete;
-       atomic_long_t debug_sqbs_all;
-       atomic_long_t debug_sqbs_incomplete;
-};
-
-extern struct qdio_perf_stats perf_stats;
-extern int qdio_performance_stats;
-
-static inline void qdio_perf_stat_inc(atomic_long_t *count)
-{
-       if (qdio_performance_stats)
-               atomic_long_inc(count);
-}
-
-int qdio_setup_perf_stats(void);
-void qdio_remove_perf_stats(void);
-
-#endif
index 981a77e..091d904 100644 (file)
@@ -1,9 +1,7 @@
 /*
  * linux/drivers/s390/cio/thinint_qdio.c
  *
- * thin interrupt support for qdio
- *
- * Copyright 2000-2008 IBM Corp.
+ * Copyright 2000,2009 IBM Corp.
  * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
  *           Cornelia Huck <cornelia.huck@de.ibm.com>
  *           Jan Glauber <jang@linux.vnet.ibm.com>
@@ -19,7 +17,6 @@
 #include "ioasm.h"
 #include "qdio.h"
 #include "qdio_debug.h"
-#include "qdio_perf.h"
 
 /*
  * Restriction: only 63 iqdio subchannels would have its own indicator,
@@ -132,8 +129,6 @@ static void tiqdio_thinint_handler(void *ind, void *drv_data)
 {
        struct qdio_q *q;
 
-       qdio_perf_stat_inc(&perf_stats.thin_int);
-
        /*
         * SVS only when needed: issue SVS to benefit from iqdio interrupt
         * avoidance (SVS clears adapter interrupt suppression overwrite)
@@ -154,6 +149,7 @@ static void tiqdio_thinint_handler(void *ind, void *drv_data)
        list_for_each_entry_rcu(q, &tiq_list, entry)
                /* only process queues from changed sets */
                if (*q->irq_ptr->dsci) {
+                       qperf_inc(q, adapter_int);
 
                        /* only clear it if the indicator is non-shared */
                        if (!shared_ind(q->irq_ptr))