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    Subject[patch 11/60] qdio: add eqbs/sqbs instruction counters
    From: Jan Glauber <jang@linux.vnet.ibm.com>

    Add counters for the eqbs and sqbs instructions that indicate how often
    we issued the instructions and how often the instructions returned with
    less buffers than specified.

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

    drivers/s390/cio/qdio_main.c | 7 ++++++-
    drivers/s390/cio/qdio_perf.c | 6 ++++++
    drivers/s390/cio/qdio_perf.h | 4 ++++
    3 files changed, 16 insertions(+), 1 deletion(-)

    Index: quilt-2.6/drivers/s390/cio/qdio_main.c
    ===================================================================
    --- quilt-2.6.orig/drivers/s390/cio/qdio_main.c
    +++ quilt-2.6/drivers/s390/cio/qdio_main.c
    @@ -129,6 +129,7 @@ static int qdio_do_eqbs(struct qdio_q *q
    char dbf_text[15];

    BUG_ON(!q->irq_ptr->sch_token);
    + qdio_perf_stat_inc(&perf_stats.debug_eqbs_all);

    if (!q->is_input_q)
    nr += q->irq_ptr->nr_input_qs;
    @@ -139,8 +140,10 @@ again:
    /* At least one buffer was processed, return and extract the remaining
    * buffers later.
    */
    - if ((ccq == 96) && (count != tmp_count))
    + if ((ccq == 96) && (count != tmp_count)) {
    + qdio_perf_stat_inc(&perf_stats.debug_eqbs_incomplete);
    return (count - tmp_count);
    + }
    if (rc == 1) {
    QDIO_DBF_TEXT5(1, trace, "eqAGAIN");
    goto again;
    @@ -179,6 +182,7 @@ static int qdio_do_sqbs(struct qdio_q *q
    char dbf_text[15];

    BUG_ON(!q->irq_ptr->sch_token);
    + qdio_perf_stat_inc(&perf_stats.debug_sqbs_all);

    if (!q->is_input_q)
    nr += q->irq_ptr->nr_input_qs;
    @@ -187,6 +191,7 @@ again:
    rc = qdio_check_ccq(q, ccq);
    if (rc == 1) {
    QDIO_DBF_TEXT5(1, trace, "sqAGAIN");
    + qdio_perf_stat_inc(&perf_stats.debug_sqbs_incomplete);
    goto again;
    }
    if (rc < 0) {
    Index: quilt-2.6/drivers/s390/cio/qdio_perf.c
    ===================================================================
    --- quilt-2.6.orig/drivers/s390/cio/qdio_perf.c
    +++ quilt-2.6/drivers/s390/cio/qdio_perf.c
    @@ -80,6 +80,12 @@ static int qdio_perf_proc_show(struct se
    (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;
    }
    Index: quilt-2.6/drivers/s390/cio/qdio_perf.h
    ===================================================================
    --- quilt-2.6.orig/drivers/s390/cio/qdio_perf.h
    +++ quilt-2.6/drivers/s390/cio/qdio_perf.h
    @@ -40,6 +40,10 @@ struct qdio_perf_stats {
    /* 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;
    --
    blue skies,
    Martin.

    "Reality continues to ruin my life." - Calvin.



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