[S390] runtime switch for qdio performance statistics
Remove CONFIG_QETH_PERF_STATS and use a sysfs attribute instead. We want to have the ability to turn the statistics on/off at runtime. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Ursula Braun
Martin Schwidefsky
parent
9575bf2657
commit
34249d0f92
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@ -258,14 +258,6 @@ config QDIO
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If unsure, say Y.
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config QDIO_PERF_STATS
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bool "Performance statistics in /proc"
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depends on QDIO
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help
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Say Y here to get performance statistics in /proc/qdio_perf
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If unsure, say N.
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config QDIO_DEBUG
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bool "Extended debugging information"
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depends on QDIO
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@ -134,7 +134,6 @@ CONFIG_RESOURCES_64BIT=y
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#
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CONFIG_MACHCHK_WARNING=y
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CONFIG_QDIO=y
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# CONFIG_QDIO_PERF_STATS is not set
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# CONFIG_QDIO_DEBUG is not set
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#
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@ -46,6 +46,7 @@
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#include <asm/timex.h>
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#include <asm/debug.h>
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#include <asm/s390_rdev.h>
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#include <asm/qdio.h>
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#include "cio.h"
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@ -65,12 +66,12 @@ MODULE_LICENSE("GPL");
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/******************** HERE WE GO ***********************************/
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static const char version[] = "QDIO base support version 2";
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extern struct bus_type ccw_bus_type;
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#ifdef QDIO_PERFORMANCE_STATS
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static int qdio_performance_stats = 0;
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static int proc_perf_file_registration;
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static unsigned long i_p_c, i_p_nc, o_p_c, o_p_nc, ii_p_c, ii_p_nc;
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static struct qdio_perf_stats perf_stats;
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#endif /* QDIO_PERFORMANCE_STATS */
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static int hydra_thinints;
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static int is_passthrough = 0;
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@ -275,9 +276,8 @@ qdio_siga_sync(struct qdio_q *q, unsigned int gpr2,
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QDIO_DBF_TEXT4(0,trace,"sigasync");
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QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.siga_syncs++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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perf_stats.siga_syncs++;
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cc = do_siga_sync(q->schid, gpr2, gpr3);
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if (cc)
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@ -322,9 +322,8 @@ qdio_siga_output(struct qdio_q *q)
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__u32 busy_bit;
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__u64 start_time=0;
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.siga_outs++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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perf_stats.siga_outs++;
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QDIO_DBF_TEXT4(0,trace,"sigaout");
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QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
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@ -358,9 +357,8 @@ qdio_siga_input(struct qdio_q *q)
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QDIO_DBF_TEXT4(0,trace,"sigain");
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QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.siga_ins++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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perf_stats.siga_ins++;
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cc = do_siga_input(q->schid, q->mask);
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@ -954,9 +952,8 @@ __qdio_outbound_processing(struct qdio_q *q)
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if (unlikely(qdio_reserve_q(q))) {
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qdio_release_q(q);
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#ifdef QDIO_PERFORMANCE_STATS
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o_p_c++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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o_p_c++;
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/* as we're sissies, we'll check next time */
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if (likely(!atomic_read(&q->is_in_shutdown))) {
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qdio_mark_q(q);
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@ -964,10 +961,10 @@ __qdio_outbound_processing(struct qdio_q *q)
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}
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return;
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}
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#ifdef QDIO_PERFORMANCE_STATS
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o_p_nc++;
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perf_stats.tl_runs++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats) {
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o_p_nc++;
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perf_stats.tl_runs++;
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}
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/* see comment in qdio_kick_outbound_q */
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siga_attempts=atomic_read(&q->busy_siga_counter);
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@ -1142,15 +1139,16 @@ qdio_has_inbound_q_moved(struct qdio_q *q)
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{
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int i;
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#ifdef QDIO_PERFORMANCE_STATS
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static int old_pcis=0;
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static int old_thinints=0;
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if ((old_pcis==perf_stats.pcis)&&(old_thinints==perf_stats.thinints))
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perf_stats.start_time_inbound=NOW;
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else
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old_pcis=perf_stats.pcis;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats) {
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if ((old_pcis==perf_stats.pcis)&&
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(old_thinints==perf_stats.thinints))
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perf_stats.start_time_inbound=NOW;
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else
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old_pcis=perf_stats.pcis;
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}
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i=qdio_get_inbound_buffer_frontier(q);
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if ( (i!=GET_SAVED_FRONTIER(q)) ||
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@ -1340,10 +1338,10 @@ qdio_kick_inbound_handler(struct qdio_q *q)
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q->siga_error=0;
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q->error_status_flags=0;
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.inbound_time+=NOW-perf_stats.start_time_inbound;
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perf_stats.inbound_cnt++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats) {
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perf_stats.inbound_time+=NOW-perf_stats.start_time_inbound;
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perf_stats.inbound_cnt++;
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}
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}
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static inline void
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@ -1363,9 +1361,8 @@ __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
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*/
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if (unlikely(qdio_reserve_q(q))) {
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qdio_release_q(q);
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#ifdef QDIO_PERFORMANCE_STATS
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ii_p_c++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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ii_p_c++;
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/*
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* as we might just be about to stop polling, we make
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* sure that we check again at least once more
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@ -1373,9 +1370,8 @@ __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
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tiqdio_sched_tl();
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return;
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}
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#ifdef QDIO_PERFORMANCE_STATS
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ii_p_nc++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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ii_p_nc++;
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if (unlikely(atomic_read(&q->is_in_shutdown))) {
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qdio_unmark_q(q);
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goto out;
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@ -1416,11 +1412,11 @@ __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
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irq_ptr = (struct qdio_irq*)q->irq_ptr;
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for (i=0;i<irq_ptr->no_output_qs;i++) {
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oq = irq_ptr->output_qs[i];
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.tl_runs--;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (!qdio_is_outbound_q_done(oq))
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if (!qdio_is_outbound_q_done(oq)) {
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if (qdio_performance_stats)
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perf_stats.tl_runs--;
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__qdio_outbound_processing(oq);
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}
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}
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}
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@ -1457,9 +1453,8 @@ __qdio_inbound_processing(struct qdio_q *q)
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if (unlikely(qdio_reserve_q(q))) {
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qdio_release_q(q);
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#ifdef QDIO_PERFORMANCE_STATS
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i_p_c++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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i_p_c++;
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/* as we're sissies, we'll check next time */
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if (likely(!atomic_read(&q->is_in_shutdown))) {
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qdio_mark_q(q);
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@ -1467,10 +1462,10 @@ __qdio_inbound_processing(struct qdio_q *q)
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}
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return;
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}
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#ifdef QDIO_PERFORMANCE_STATS
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i_p_nc++;
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perf_stats.tl_runs++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats) {
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i_p_nc++;
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perf_stats.tl_runs++;
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}
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again:
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if (qdio_has_inbound_q_moved(q)) {
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@ -1516,9 +1511,8 @@ tiqdio_reset_processing_state(struct qdio_q *q, int q_laps)
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if (unlikely(qdio_reserve_q(q))) {
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qdio_release_q(q);
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#ifdef QDIO_PERFORMANCE_STATS
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ii_p_c++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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ii_p_c++;
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/*
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* as we might just be about to stop polling, we make
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* sure that we check again at least once more
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@ -1609,9 +1603,8 @@ tiqdio_tl(unsigned long data)
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{
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QDIO_DBF_TEXT4(0,trace,"iqdio_tl");
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.tl_runs++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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perf_stats.tl_runs++;
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tiqdio_inbound_checks();
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}
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@ -1918,10 +1911,10 @@ tiqdio_thinint_handler(void)
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{
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QDIO_DBF_TEXT4(0,trace,"thin_int");
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.thinints++;
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perf_stats.start_time_inbound=NOW;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats) {
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perf_stats.thinints++;
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perf_stats.start_time_inbound=NOW;
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}
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/* SVS only when needed:
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* issue SVS to benefit from iqdio interrupt avoidance
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@ -1976,18 +1969,17 @@ qdio_handle_pci(struct qdio_irq *irq_ptr)
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int i;
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struct qdio_q *q;
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.pcis++;
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perf_stats.start_time_inbound=NOW;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats) {
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perf_stats.pcis++;
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perf_stats.start_time_inbound=NOW;
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}
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for (i=0;i<irq_ptr->no_input_qs;i++) {
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q=irq_ptr->input_qs[i];
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if (q->is_input_q&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT)
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qdio_mark_q(q);
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else {
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.tl_runs--;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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perf_stats.tl_runs--;
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__qdio_inbound_processing(q);
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}
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}
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@ -1995,11 +1987,10 @@ qdio_handle_pci(struct qdio_irq *irq_ptr)
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return;
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for (i=0;i<irq_ptr->no_output_qs;i++) {
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q=irq_ptr->output_qs[i];
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.tl_runs--;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_is_outbound_q_done(q))
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continue;
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if (qdio_performance_stats)
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perf_stats.tl_runs--;
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if (!irq_ptr->sync_done_on_outb_pcis)
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SYNC_MEMORY;
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__qdio_outbound_processing(q);
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@ -3460,19 +3451,18 @@ do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
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struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr;
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/* This is the outbound handling of queues */
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.start_time_outbound=NOW;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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perf_stats.start_time_outbound=NOW;
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qdio_do_qdio_fill_output(q,qidx,count,buffers);
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used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
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if (callflags&QDIO_FLAG_DONT_SIGA) {
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
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perf_stats.outbound_cnt++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats) {
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perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
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perf_stats.outbound_cnt++;
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}
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return;
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}
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if (q->is_iqdio_q) {
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@ -3502,9 +3492,8 @@ do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
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qdio_kick_outbound_q(q);
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} else {
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QDIO_DBF_TEXT3(0,trace, "fast-req");
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.fast_reqs++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats)
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perf_stats.fast_reqs++;
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}
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}
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/*
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@ -3515,10 +3504,10 @@ do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
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__qdio_outbound_processing(q);
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}
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#ifdef QDIO_PERFORMANCE_STATS
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perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
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perf_stats.outbound_cnt++;
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#endif /* QDIO_PERFORMANCE_STATS */
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if (qdio_performance_stats) {
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perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
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perf_stats.outbound_cnt++;
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}
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}
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/* count must be 1 in iqdio */
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@ -3576,7 +3565,6 @@ do_QDIO(struct ccw_device *cdev,unsigned int callflags,
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return 0;
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}
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#ifdef QDIO_PERFORMANCE_STATS
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static int
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qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
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int buffer_length, int *eof, void *data)
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@ -3592,29 +3580,29 @@ qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
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_OUTP_IT("i_p_nc/c=%lu/%lu\n",i_p_nc,i_p_c);
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_OUTP_IT("ii_p_nc/c=%lu/%lu\n",ii_p_nc,ii_p_c);
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_OUTP_IT("o_p_nc/c=%lu/%lu\n",o_p_nc,o_p_c);
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_OUTP_IT("Number of tasklet runs (total) : %u\n",
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_OUTP_IT("Number of tasklet runs (total) : %lu\n",
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perf_stats.tl_runs);
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_OUTP_IT("\n");
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_OUTP_IT("Number of SIGA sync's issued : %u\n",
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_OUTP_IT("Number of SIGA sync's issued : %lu\n",
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perf_stats.siga_syncs);
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_OUTP_IT("Number of SIGA in's issued : %u\n",
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_OUTP_IT("Number of SIGA in's issued : %lu\n",
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perf_stats.siga_ins);
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_OUTP_IT("Number of SIGA out's issued : %u\n",
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_OUTP_IT("Number of SIGA out's issued : %lu\n",
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perf_stats.siga_outs);
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_OUTP_IT("Number of PCIs caught : %u\n",
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_OUTP_IT("Number of PCIs caught : %lu\n",
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perf_stats.pcis);
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_OUTP_IT("Number of adapter interrupts caught : %u\n",
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_OUTP_IT("Number of adapter interrupts caught : %lu\n",
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perf_stats.thinints);
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_OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %u\n",
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_OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %lu\n",
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perf_stats.fast_reqs);
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_OUTP_IT("\n");
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_OUTP_IT("Total time of all inbound actions (us) incl. UL : %u\n",
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_OUTP_IT("Total time of all inbound actions (us) incl. UL : %lu\n",
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perf_stats.inbound_time);
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_OUTP_IT("Number of inbound transfers : %u\n",
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_OUTP_IT("Number of inbound transfers : %lu\n",
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perf_stats.inbound_cnt);
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_OUTP_IT("Total time of all outbound do_QDIOs (us) : %u\n",
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_OUTP_IT("Total time of all outbound do_QDIOs (us) : %lu\n",
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perf_stats.outbound_time);
|
||||
_OUTP_IT("Number of do_QDIOs outbound : %u\n",
|
||||
_OUTP_IT("Number of do_QDIOs outbound : %lu\n",
|
||||
perf_stats.outbound_cnt);
|
||||
_OUTP_IT("\n");
|
||||
|
||||
|
|
@ -3622,12 +3610,10 @@ qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
|
|||
}
|
||||
|
||||
static struct proc_dir_entry *qdio_perf_proc_file;
|
||||
#endif /* QDIO_PERFORMANCE_STATS */
|
||||
|
||||
static void
|
||||
qdio_add_procfs_entry(void)
|
||||
{
|
||||
#ifdef QDIO_PERFORMANCE_STATS
|
||||
proc_perf_file_registration=0;
|
||||
qdio_perf_proc_file=create_proc_entry(QDIO_PERF,
|
||||
S_IFREG|0444,&proc_root);
|
||||
|
|
@ -3639,20 +3625,58 @@ qdio_add_procfs_entry(void)
|
|||
QDIO_PRINT_WARN("was not able to register perf. " \
|
||||
"proc-file (%i).\n",
|
||||
proc_perf_file_registration);
|
||||
#endif /* QDIO_PERFORMANCE_STATS */
|
||||
}
|
||||
|
||||
static void
|
||||
qdio_remove_procfs_entry(void)
|
||||
{
|
||||
#ifdef QDIO_PERFORMANCE_STATS
|
||||
perf_stats.tl_runs=0;
|
||||
|
||||
if (!proc_perf_file_registration) /* means if it went ok earlier */
|
||||
remove_proc_entry(QDIO_PERF,&proc_root);
|
||||
#endif /* QDIO_PERFORMANCE_STATS */
|
||||
}
|
||||
|
||||
/**
|
||||
* attributes in sysfs
|
||||
*****************************************************************************/
|
||||
|
||||
static ssize_t
|
||||
qdio_performance_stats_show(struct bus_type *bus, char *buf)
|
||||
{
|
||||
return sprintf(buf, "%i\n", qdio_performance_stats ? 1 : 0);
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
qdio_performance_stats_store(struct bus_type *bus, const char *buf, size_t count)
|
||||
{
|
||||
char *tmp;
|
||||
int i;
|
||||
|
||||
i = simple_strtoul(buf, &tmp, 16);
|
||||
if ((i == 0) || (i == 1)) {
|
||||
if (i == qdio_performance_stats)
|
||||
return count;
|
||||
qdio_performance_stats = i;
|
||||
if (i==0) {
|
||||
/* reset perf. stat. info */
|
||||
i_p_nc = 0;
|
||||
i_p_c = 0;
|
||||
ii_p_nc = 0;
|
||||
ii_p_c = 0;
|
||||
o_p_nc = 0;
|
||||
o_p_c = 0;
|
||||
memset(&perf_stats, 0, sizeof(struct qdio_perf_stats));
|
||||
}
|
||||
} else {
|
||||
QDIO_PRINT_WARN("QDIO performance_stats: write 0 or 1 to this file!\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
static BUS_ATTR(qdio_performance_stats, 0644, qdio_performance_stats_show,
|
||||
qdio_performance_stats_store);
|
||||
|
||||
static void
|
||||
tiqdio_register_thinints(void)
|
||||
{
|
||||
|
|
@ -3697,6 +3721,7 @@ qdio_release_qdio_memory(void)
|
|||
kfree(indicators);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
qdio_unregister_dbf_views(void)
|
||||
{
|
||||
|
|
@ -3798,9 +3823,7 @@ static int __init
|
|||
init_QDIO(void)
|
||||
{
|
||||
int res;
|
||||
#ifdef QDIO_PERFORMANCE_STATS
|
||||
void *ptr;
|
||||
#endif /* QDIO_PERFORMANCE_STATS */
|
||||
|
||||
printk("qdio: loading %s\n",version);
|
||||
|
||||
|
|
@ -3813,13 +3836,12 @@ init_QDIO(void)
|
|||
return res;
|
||||
|
||||
QDIO_DBF_TEXT0(0,setup,"initQDIO");
|
||||
res = bus_create_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
|
||||
|
||||
#ifdef QDIO_PERFORMANCE_STATS
|
||||
memset((void*)&perf_stats,0,sizeof(perf_stats));
|
||||
memset((void*)&perf_stats,0,sizeof(perf_stats));
|
||||
QDIO_DBF_TEXT0(0,setup,"perfstat");
|
||||
ptr=&perf_stats;
|
||||
QDIO_DBF_HEX0(0,setup,&ptr,sizeof(void*));
|
||||
#endif /* QDIO_PERFORMANCE_STATS */
|
||||
|
||||
qdio_add_procfs_entry();
|
||||
|
||||
|
|
@ -3843,7 +3865,7 @@ cleanup_QDIO(void)
|
|||
qdio_release_qdio_memory();
|
||||
qdio_unregister_dbf_views();
|
||||
mempool_destroy(qdio_mempool_scssc);
|
||||
|
||||
bus_remove_file(&ccw_bus_type, &bus_attr_qdio_performance_stats);
|
||||
printk("qdio: %s: module removed\n",version);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -12,10 +12,6 @@
|
|||
#endif /* CONFIG_QDIO_DEBUG */
|
||||
#define QDIO_USE_PROCESSING_STATE
|
||||
|
||||
#ifdef CONFIG_QDIO_PERF_STATS
|
||||
#define QDIO_PERFORMANCE_STATS
|
||||
#endif /* CONFIG_QDIO_PERF_STATS */
|
||||
|
||||
#define QDIO_MINIMAL_BH_RELIEF_TIME 16
|
||||
#define QDIO_TIMER_POLL_VALUE 1
|
||||
#define IQDIO_TIMER_POLL_VALUE 1
|
||||
|
|
@ -409,25 +405,23 @@ do_clear_global_summary(void)
|
|||
#define CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS 0x08
|
||||
#define CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS 0x04
|
||||
|
||||
#ifdef QDIO_PERFORMANCE_STATS
|
||||
struct qdio_perf_stats {
|
||||
unsigned int tl_runs;
|
||||
unsigned long tl_runs;
|
||||
|
||||
unsigned int siga_outs;
|
||||
unsigned int siga_ins;
|
||||
unsigned int siga_syncs;
|
||||
unsigned int pcis;
|
||||
unsigned int thinints;
|
||||
unsigned int fast_reqs;
|
||||
unsigned long siga_outs;
|
||||
unsigned long siga_ins;
|
||||
unsigned long siga_syncs;
|
||||
unsigned long pcis;
|
||||
unsigned long thinints;
|
||||
unsigned long fast_reqs;
|
||||
|
||||
__u64 start_time_outbound;
|
||||
unsigned int outbound_cnt;
|
||||
unsigned int outbound_time;
|
||||
unsigned long outbound_cnt;
|
||||
unsigned long outbound_time;
|
||||
__u64 start_time_inbound;
|
||||
unsigned int inbound_cnt;
|
||||
unsigned int inbound_time;
|
||||
unsigned long inbound_cnt;
|
||||
unsigned long inbound_time;
|
||||
};
|
||||
#endif /* QDIO_PERFORMANCE_STATS */
|
||||
|
||||
/* unlikely as the later the better */
|
||||
#define SYNC_MEMORY if (unlikely(q->siga_sync)) qdio_siga_sync_q(q)
|
||||
|
|
|
|||
Loading…
Reference in New Issue