[src/trunk]: src/sys/arch/arm/arm32 Count bus_dmamap_sync events for coherent...

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e466ecfebf62
branches:  trunk
changeset: 958071:e466ecfebf62
user:      skrll <skrll%NetBSD.org@localhost>
date:      Tue Dec 22 13:07:32 2020 +0000

description:
Count bus_dmamap_sync events for coherent ranges and non-coherent ranges

diffstat:

 sys/arch/arm/arm32/bus_dma.c |  40 ++++++++++++++++++++++++++++++++--------
 1 files changed, 32 insertions(+), 8 deletions(-)

diffs (94 lines):

diff -r ad9872c75773 -r e466ecfebf62 sys/arch/arm/arm32/bus_dma.c
--- a/sys/arch/arm/arm32/bus_dma.c      Tue Dec 22 10:46:51 2020 +0000
+++ b/sys/arch/arm/arm32/bus_dma.c      Tue Dec 22 13:07:32 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bus_dma.c,v 1.128 2020/12/20 10:34:33 jmcneill Exp $   */
+/*     $NetBSD: bus_dma.c,v 1.129 2020/12/22 13:07:32 skrll Exp $      */
 
 /*-
  * Copyright (c) 1996, 1997, 1998, 2020 The NetBSD Foundation, Inc.
@@ -36,7 +36,7 @@
 #include "opt_cputypes.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: bus_dma.c,v 1.128 2020/12/20 10:34:33 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: bus_dma.c,v 1.129 2020/12/22 13:07:32 skrll Exp $");
 
 #include <sys/param.h>
 
@@ -94,6 +94,19 @@
 static struct evcnt bus_dma_sync_postwrite =
        EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "busdma", "sync postwrite");
 
+static struct evcnt bus_dma_sync_coherent_prereadwrite =
+       EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "busdma", "sync coherent prereadwrite");
+static struct evcnt bus_dma_sync_coherent_preread =
+       EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "busdma", "sync coherent preread");
+static struct evcnt bus_dma_sync_coherent_prewrite =
+       EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "busdma", "sync coherent prewrite");
+static struct evcnt bus_dma_sync_coherent_postread =
+       EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "busdma", "sync coherent postread");
+static struct evcnt bus_dma_sync_coherent_postreadwrite =
+       EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "busdma", "sync coherent postreadwrite");
+static struct evcnt bus_dma_sync_coherent_postwrite =
+       EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "busdma", "sync coherent postwrite");
+
 EVCNT_ATTACH_STATIC(bus_dma_creates);
 EVCNT_ATTACH_STATIC(bus_dma_bounced_creates);
 EVCNT_ATTACH_STATIC(bus_dma_loads);
@@ -114,6 +127,13 @@
 EVCNT_ATTACH_STATIC(bus_dma_sync_postreadwrite);
 EVCNT_ATTACH_STATIC(bus_dma_sync_postwrite);
 
+EVCNT_ATTACH_STATIC(bus_dma_sync_coherent_prereadwrite);
+EVCNT_ATTACH_STATIC(bus_dma_sync_coherent_preread);
+EVCNT_ATTACH_STATIC(bus_dma_sync_coherent_prewrite);
+EVCNT_ATTACH_STATIC(bus_dma_sync_coherent_postread);
+EVCNT_ATTACH_STATIC(bus_dma_sync_coherent_postreadwrite);
+EVCNT_ATTACH_STATIC(bus_dma_sync_coherent_postwrite);
+
 #define        STAT_INCR(x)    (bus_dma_ ## x.ev_count++)
 #else
 #define        STAT_INCR(x)    __nothing
@@ -1108,7 +1128,11 @@
 
        if (post_ops == BUS_DMASYNC_POSTWRITE) {
                KASSERT(pre_ops == 0);
-               STAT_INCR(sync_postwrite);
+               if ((map->_dm_flags & _BUS_DMAMAP_COHERENT)) {
+                       STAT_INCR(sync_coherent_postwrite);
+               } else {
+                       STAT_INCR(sync_postwrite);
+               }
                return;
        }
 
@@ -1157,23 +1181,23 @@
        if ((map->_dm_flags & _BUS_DMAMAP_COHERENT)) {
                switch (ops) {
                case BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE:
-                       STAT_INCR(sync_prereadwrite);
+                       STAT_INCR(sync_coherent_prereadwrite);
                        break;
 
                case BUS_DMASYNC_PREREAD:
-                       STAT_INCR(sync_preread);
+                       STAT_INCR(sync_coherent_preread);
                        break;
 
                case BUS_DMASYNC_PREWRITE:
-                       STAT_INCR(sync_prewrite);
+                       STAT_INCR(sync_coherent_prewrite);
                        break;
 
                case BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE:
-                       STAT_INCR(sync_postreadwrite);
+                       STAT_INCR(sync_coherent_postreadwrite);
                        break;
 
                case BUS_DMASYNC_POSTREAD:
-                       STAT_INCR(sync_postread);
+                       STAT_INCR(sync_coherent_postread);
                        break;
 
                /* BUS_DMASYNC_POSTWRITE was aleady handled as a fastpath */