[PATCH 2/2] drm/amd/amdgpu: Remove AMDGPU tracepoint and use new TTM tracepoint (v2)

[Tom St Denis]

Switches the AMDGPU driver over to the TTM tracepoint and removes
our old one.  Now you can enable traces before loading the module
and trace all mappings.

Signed-off-by: Tom St Denis <tom.stdenis at amd.com>

(v2): Use struct device instead of pci in trace.
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h | 56 -------------------------------
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c   | 21 ++----------
 2 files changed, 3 insertions(+), 74 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
index 1c88bd5e29ad..b1f97417241d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
@@ -14,62 +14,6 @@
 #define AMDGPU_JOB_GET_TIMELINE_NAME(job) \
 	 job->base.s_fence->finished.ops->get_timeline_name(&job->base.s_fence->finished)
 
-TRACE_EVENT(amdgpu_ttm_tt_populate,
-	    TP_PROTO(struct amdgpu_device *adev, uint64_t dma_address, uint64_t phys_address),
-	    TP_ARGS(adev, dma_address, phys_address),
-	    TP_STRUCT__entry(
-				__field(uint16_t, domain)
-				__field(uint8_t, bus)
-				__field(uint8_t, slot)
-				__field(uint8_t, func)
-				__field(uint64_t, dma)
-				__field(uint64_t, phys)
-			    ),
-	    TP_fast_assign(
-			   __entry->domain = pci_domain_nr(adev->pdev->bus);
-			   __entry->bus = adev->pdev->bus->number;
-			   __entry->slot = PCI_SLOT(adev->pdev->devfn);
-			   __entry->func = PCI_FUNC(adev->pdev->devfn);
-			   __entry->dma = dma_address;
-			   __entry->phys = phys_address;
-			   ),
-	    TP_printk("%04x:%02x:%02x.%x: 0x%llx => 0x%llx",
-		      (unsigned)__entry->domain,
-		      (unsigned)__entry->bus,
-		      (unsigned)__entry->slot,
-		      (unsigned)__entry->func,
-		      (unsigned long long)__entry->dma,
-		      (unsigned long long)__entry->phys)
-);
-
-TRACE_EVENT(amdgpu_ttm_tt_unpopulate,
-	    TP_PROTO(struct amdgpu_device *adev, uint64_t dma_address, uint64_t phys_address),
-	    TP_ARGS(adev, dma_address, phys_address),
-	    TP_STRUCT__entry(
-				__field(uint16_t, domain)
-				__field(uint8_t, bus)
-				__field(uint8_t, slot)
-				__field(uint8_t, func)
-				__field(uint64_t, dma)
-				__field(uint64_t, phys)
-			    ),
-	    TP_fast_assign(
-			   __entry->domain = pci_domain_nr(adev->pdev->bus);
-			   __entry->bus = adev->pdev->bus->number;
-			   __entry->slot = PCI_SLOT(adev->pdev->devfn);
-			   __entry->func = PCI_FUNC(adev->pdev->devfn);
-			   __entry->dma = dma_address;
-			   __entry->phys = phys_address;
-			   ),
-	    TP_printk("%04x:%02x:%02x.%x: 0x%llx => 0x%llx",
-		      (unsigned)__entry->domain,
-		      (unsigned)__entry->bus,
-		      (unsigned)__entry->slot,
-		      (unsigned)__entry->func,
-		      (unsigned long long)__entry->dma,
-		      (unsigned long long)__entry->phys)
-);
-
 TRACE_EVENT(amdgpu_mm_rreg,
 	    TP_PROTO(unsigned did, uint32_t reg, uint32_t value),
 	    TP_ARGS(did, reg, value),
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 26665b4baf36..38d26a7d5d0d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -34,6 +34,7 @@
 #include <ttm/ttm_placement.h>
 #include <ttm/ttm_module.h>
 #include <ttm/ttm_page_alloc.h>
+#include <ttm/ttm_debug.h>
 #include <drm/drmP.h>
 #include <drm/amdgpu_drm.h>
 #include <linux/seq_file.h>
@@ -667,32 +668,16 @@ static void amdgpu_trace_dma_map(struct ttm_tt *ttm)
 {
 	struct amdgpu_device *adev = amdgpu_ttm_adev(ttm->bdev);
 	struct amdgpu_ttm_tt *gtt = (void *)ttm;
-	unsigned i;
 
-	if (unlikely(trace_amdgpu_ttm_tt_populate_enabled())) {
-		for (i = 0; i < ttm->num_pages; i++) {
-			trace_amdgpu_ttm_tt_populate(
-				adev,
-				gtt->ttm.dma_address[i],
-				page_to_phys(ttm->pages[i]));
-		}
-	}
+	ttm_trace_dma_map(adev->dev, &gtt->ttm);
 }
 
 static void amdgpu_trace_dma_unmap(struct ttm_tt *ttm)
 {
 	struct amdgpu_device *adev = amdgpu_ttm_adev(ttm->bdev);
 	struct amdgpu_ttm_tt *gtt = (void *)ttm;
-	unsigned i;
 
-	if (unlikely(trace_amdgpu_ttm_tt_unpopulate_enabled())) {
-		for (i = 0; i < ttm->num_pages; i++) {
-			trace_amdgpu_ttm_tt_unpopulate(
-				adev,
-				gtt->ttm.dma_address[i],
-				page_to_phys(ttm->pages[i]));
-		}
-	}
+	ttm_trace_dma_unmap(adev->dev, &gtt->ttm);
 }
 
 /* prepare the sg table with the user pages */
-- 
2.12.0