Traces for page directories and tables allocation and map.
v2: Removed references to teardown.
v3: bitmap_scnprintf has been deprecated.
v4: Replace bitmap_scnprintf with scnprintf correctly, and get right
range lengths. (Mika)
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Signed-off-by: Michel Thierry <michel.thierry@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem.c | 2 +
drivers/gpu/drm/i915/i915_gem_gtt.c | 5 ++
drivers/gpu/drm/i915/i915_trace.h | 99 +++++++++++++++++++++++++++++++++++++
3 files changed, 106 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 08feb54..99dc0da 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3538,6 +3538,8 @@ search_free:
/* allocate before insert / bind */
if (vma->vm->allocate_va_range) {
+ trace_i915_va_alloc(vma->vm, vma->node.start, vma->node.size,
+ VM_TO_TRACE_NAME(vma->vm));
ret = vma->vm->allocate_va_range(vma->vm,
vma->node.start,
vma->node.size);
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 0952736..1bb2736 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1222,6 +1222,7 @@ static int gen6_alloc_va_range(struct i915_address_space *vm,
ppgtt->pd.page_table[pde] = pt;
set_bit(pde, new_page_tables);
+ trace_i915_page_table_entry_alloc(vm, pde, start, GEN6_PDE_SHIFT);
}
start = start_save;
@@ -1237,6 +1238,10 @@ static int gen6_alloc_va_range(struct i915_address_space *vm,
if (test_and_clear_bit(pde, new_page_tables))
gen6_write_pde(&ppgtt->pd, pde, pt);
+ trace_i915_page_table_entry_map(vm, pde, pt,
+ gen6_pte_index(start),
+ gen6_pte_count(start, length),
+ GEN6_PTES);
bitmap_or(pt->used_ptes, tmp_bitmap, pt->used_ptes,
GEN6_PTES);
}
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index f004d3d..b3070a4 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -156,6 +156,105 @@ TRACE_EVENT(i915_vma_unbind,
__entry->obj, __entry->offset, __entry->size, __entry->vm)
);
+#define VM_TO_TRACE_NAME(vm) \
+ (i915_is_ggtt(vm) ? "G" : \
+ "P")
+
+DECLARE_EVENT_CLASS(i915_va,
+ TP_PROTO(struct i915_address_space *vm, u64 start, u64 length, const char *name),
+ TP_ARGS(vm, start, length, name),
+
+ TP_STRUCT__entry(
+ __field(struct i915_address_space *, vm)
+ __field(u64, start)
+ __field(u64, end)
+ __string(name, name)
+ ),
+
+ TP_fast_assign(
+ __entry->vm = vm;
+ __entry->start = start;
+ __entry->end = start + length - 1;
+ __assign_str(name, name);
+ ),
+
+ TP_printk("vm=%p (%s), 0x%llx-0x%llx",
+ __entry->vm, __get_str(name), __entry->start, __entry->end)
+);
+
+DEFINE_EVENT(i915_va, i915_va_alloc,
+ TP_PROTO(struct i915_address_space *vm, u64 start, u64 length, const char *name),
+ TP_ARGS(vm, start, length, name)
+);
+
+DECLARE_EVENT_CLASS(i915_page_table_entry,
+ TP_PROTO(struct i915_address_space *vm, u32 pde, u64 start, u64 pde_shift),
+ TP_ARGS(vm, pde, start, pde_shift),
+
+ TP_STRUCT__entry(
+ __field(struct i915_address_space *, vm)
+ __field(u32, pde)
+ __field(u64, start)
+ __field(u64, end)
+ ),
+
+ TP_fast_assign(
+ __entry->vm = vm;
+ __entry->pde = pde;
+ __entry->start = start;
+ __entry->end = ((start + (1ULL << pde_shift)) & ~((1ULL << pde_shift)-1)) - 1;
+ ),
+
+ TP_printk("vm=%p, pde=%d (0x%llx-0x%llx)",
+ __entry->vm, __entry->pde, __entry->start, __entry->end)
+);
+
+DEFINE_EVENT(i915_page_table_entry, i915_page_table_entry_alloc,
+ TP_PROTO(struct i915_address_space *vm, u32 pde, u64 start, u64 pde_shift),
+ TP_ARGS(vm, pde, start, pde_shift)
+);
+
+/* Avoid extra math because we only support two sizes. The format is defined by
+ * bitmap_scnprintf. Each 32 bits is 8 HEX digits followed by comma */
+#define TRACE_PT_SIZE(bits) \
+ ((((bits) == 1024) ? 288 : 144) + 1)
+
+DECLARE_EVENT_CLASS(i915_page_table_entry_update,
+ TP_PROTO(struct i915_address_space *vm, u32 pde,
+ struct i915_page_table_entry *pt, u32 first, u32 count, u32 bits),
+ TP_ARGS(vm, pde, pt, first, count, bits),
+
+ TP_STRUCT__entry(
+ __field(struct i915_address_space *, vm)
+ __field(u32, pde)
+ __field(u32, first)
+ __field(u32, last)
+ __dynamic_array(char, cur_ptes, TRACE_PT_SIZE(bits))
+ ),
+
+ TP_fast_assign(
+ __entry->vm = vm;
+ __entry->pde = pde;
+ __entry->first = first;
+ __entry->last = first + count - 1;
+ scnprintf(__get_str(cur_ptes),
+ TRACE_PT_SIZE(bits),
+ "%*pb",
+ bits,
+ pt->used_ptes);
+ ),
+
+ TP_printk("vm=%p, pde=%d, updating %u:%u\t%s",
+ __entry->vm, __entry->pde, __entry->last, __entry->first,
+ __get_str(cur_ptes))
+);
+
+DEFINE_EVENT(i915_page_table_entry_update, i915_page_table_entry_map,
+ TP_PROTO(struct i915_address_space *vm, u32 pde,
+ struct i915_page_table_entry *pt, u32 first, u32 count, u32 bits),
+ TP_ARGS(vm, pde, pt, first, count, bits)
+);
+
TRACE_EVENT(i915_gem_object_change_domain,
TP_PROTO(struct drm_i915_gem_object *obj, u32 old_read, u32 old_write),
TP_ARGS(obj, old_read, old_write),
--
2.1.1
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