diff mbox series

[09/16] util/vfio-helpers: Convert vfio_dump_mapping to trace events

Message ID 20201020172428.2220726-10-philmd@redhat.com
State New
Headers show
Series util/vfio-helpers: Allow using multiple MSIX IRQs | expand

Commit Message

Philippe Mathieu-Daudé Oct. 20, 2020, 5:24 p.m. UTC 
The QEMU_VFIO_DEBUG definition is only modifiable at build-time.
Trace events can be enabled at run-time. As we prefer the latter,
convert qemu_vfio_dump_mappings() to use trace events instead
of fprintf().

Reviewed-by: Fam Zheng <fam@euphon.net>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 util/vfio-helpers.c | 19 ++++---------------
 util/trace-events   |  1 +
 2 files changed, 5 insertions(+), 15 deletions(-)

Comments

Stefan Hajnoczi Oct. 22, 2020, 2:20 p.m. UTC | #1 
On Tue, Oct 20, 2020 at 07:24:21PM +0200, Philippe Mathieu-Daudé wrote:
> The QEMU_VFIO_DEBUG definition is only modifiable at build-time.
> Trace events can be enabled at run-time. As we prefer the latter,
> convert qemu_vfio_dump_mappings() to use trace events instead
> of fprintf().
> 
> Reviewed-by: Fam Zheng <fam@euphon.net>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
>  util/vfio-helpers.c | 19 ++++---------------
>  util/trace-events   |  1 +
>  2 files changed, 5 insertions(+), 15 deletions(-)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
diff mbox series

Patch

diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index 98a377a01a8..6a5100f4892 100644
--- a/util/vfio-helpers.c
+++ b/util/vfio-helpers.c
@@ -551,23 +551,12 @@  QEMUVFIOState *qemu_vfio_open_pci(const char *device, size_t *min_page_size,
     return s;
 }
 
-static void qemu_vfio_dump_mapping(IOVAMapping *m)
-{
-    if (QEMU_VFIO_DEBUG) {
-        printf("  vfio mapping %p %" PRIx64 " to %" PRIx64 "\n", m->host,
-               (uint64_t)m->size, (uint64_t)m->iova);
-    }
-}
-
 static void qemu_vfio_dump_mappings(QEMUVFIOState *s)
 {
-    int i;
-
-    if (QEMU_VFIO_DEBUG) {
-        printf("vfio mappings\n");
-        for (i = 0; i < s->nr_mappings; ++i) {
-            qemu_vfio_dump_mapping(&s->mappings[i]);
-        }
+    for (int i = 0; i < s->nr_mappings; ++i) {
+        trace_qemu_vfio_dump_mapping(s->mappings[i].host,
+                                     s->mappings[i].iova,
+                                     s->mappings[i].size);
     }
 }
 
diff --git a/util/trace-events b/util/trace-events
index c396ef4d622..3c36def9f30 100644
--- a/util/trace-events
+++ b/util/trace-events
@@ -80,6 +80,7 @@  qemu_mutex_unlock(void *mutex, const char *file, const int line) "released mutex
 qemu_vfio_dma_reset_temporary(void *s) "s %p"
 qemu_vfio_ram_block_added(void *s, void *p, size_t size) "s %p host %p size 0x%zx"
 qemu_vfio_ram_block_removed(void *s, void *p, size_t size) "s %p host %p size 0x%zx"
+qemu_vfio_dump_mapping(void *host, uint64_t iova, size_t size) "vfio mapping %p to iova 0x%08" PRIx64 " size 0x%zx"
 qemu_vfio_find_mapping(void *s, void *p) "s %p host %p"
 qemu_vfio_new_mapping(void *s, void *host, size_t size, int index, uint64_t iova) "s %p host %p size 0x%zx index %d iova 0x%"PRIx64
 qemu_vfio_do_mapping(void *s, void *host, uint64_t iova, size_t size) "s %p host %p <-> iova 0x%"PRIx64 " size 0x%zx"