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util/vfio-helpers: Convert vfio_dump_mapping to trace events

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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>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20201103020733.2303148-7-philmd@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2020-11-03 03:07:32 +01:00 committed by Stefan Hajnoczi
parent 4c946b2236
commit f6b8104d0b
2 changed files with 5 additions and 15 deletions
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1
util/trace-events
View file

@ -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"

19
util/vfio-helpers.c
View file

@ -521,23 +521,12 @@ QEMUVFIOState *qemu_vfio_open_pci(const char *device, Error **errp)
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);
}
}