[PULL 06/17] vfio/common: Use a single tracepoint for skipped sections

[Alex Williamson]

From: Joao Martins <joao.m.martins@oracle.com>

In preparation to turn more of the memory listener checks into
common functions, one of the affected places is how we trace when
sections are skipped. Right now there is one for each. Change it
into one single tracepoint `vfio_listener_region_skip` which receives
a name which refers to the callback i.e. region_add and region_del.

Suggested-by: Avihai Horon <avihaih@nvidia.com>
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: 20230307125450.62409-7-joao.m.martins@oracle.com">https://lore.kernel.org/r/20230307125450.62409-7-joao.m.martins@oracle.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---
 hw/vfio/common.c     |    4 ++--
 hw/vfio/trace-events |    3 +--
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 99acb998eb14..1cb62efa9743 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -945,7 +945,7 @@ static void vfio_listener_region_add(MemoryListener 
*listener,
     Error *err = NULL;
 
     if (vfio_listener_skipped_section(section)) {
-        trace_vfio_listener_region_add_skip(
+        trace_vfio_listener_region_skip("region_add",
                 section->offset_within_address_space,
                 section->offset_within_address_space +
                 int128_get64(int128_sub(section->size, int128_one())));
@@ -1183,7 +1183,7 @@ static void vfio_listener_region_del(MemoryListener 
*listener,
     bool try_unmap = true;
 
     if (vfio_listener_skipped_section(section)) {
-        trace_vfio_listener_region_del_skip(
+        trace_vfio_listener_region_skip("region_del",
                 section->offset_within_address_space,
                 section->offset_within_address_space +
                 int128_get64(int128_sub(section->size, int128_one())));
diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events
index 669d9fe07cd9..7173e6a5c721 100644
--- a/hw/vfio/trace-events
+++ b/hw/vfio/trace-events
@@ -96,13 +96,12 @@ vfio_pci_igd_lpc_bridge_enabled(const char *name) "%s"
 vfio_region_write(const char *name, int index, uint64_t addr, uint64_t data, 
unsigned size) " (%s:region%d+0x%"PRIx64", 0x%"PRIx64 ", %d)"
 vfio_region_read(char *name, int index, uint64_t addr, unsigned size, uint64_t 
data) " (%s:region%d+0x%"PRIx64", %d) = 0x%"PRIx64
 vfio_iommu_map_notify(const char *op, uint64_t iova_start, uint64_t iova_end) 
"iommu %s @ 0x%"PRIx64" - 0x%"PRIx64
-vfio_listener_region_add_skip(uint64_t start, uint64_t end) "SKIPPING 
region_add 0x%"PRIx64" - 0x%"PRIx64
+vfio_listener_region_skip(const char *name, uint64_t start, uint64_t end) 
"SKIPPING %s 0x%"PRIx64" - 0x%"PRIx64
 vfio_spapr_group_attach(int groupfd, int tablefd) "Attached groupfd %d to 
liobn fd %d"
 vfio_listener_region_add_iommu(uint64_t start, uint64_t end) "region_add 
[iommu] 0x%"PRIx64" - 0x%"PRIx64
 vfio_listener_region_add_ram(uint64_t iova_start, uint64_t iova_end, void 
*vaddr) "region_add [ram] 0x%"PRIx64" - 0x%"PRIx64" [%p]"
 vfio_known_safe_misalignment(const char *name, uint64_t iova, uint64_t 
offset_within_region, uintptr_t page_size) "Region \"%s\" iova=0x%"PRIx64" 
offset_within_region=0x%"PRIx64" qemu_real_host_page_size=0x%"PRIxPTR
 vfio_listener_region_add_no_dma_map(const char *name, uint64_t iova, uint64_t 
size, uint64_t page_size) "Region \"%s\" 0x%"PRIx64" size=0x%"PRIx64" is not 
aligned to 0x%"PRIx64" and cannot be mapped for DMA"
-vfio_listener_region_del_skip(uint64_t start, uint64_t end) "SKIPPING 
region_del 0x%"PRIx64" - 0x%"PRIx64
 vfio_listener_region_del(uint64_t start, uint64_t end) "region_del 0x%"PRIx64" 
- 0x%"PRIx64
 vfio_disconnect_container(int fd) "close container->fd=%d"
 vfio_put_group(int fd) "close group->fd=%d"