From 72744cb13c9ccc248331462f35468398160338bf Mon Sep 17 00:00:00 2001 From: Michel Thierry Date: Tue, 24 Mar 2015 15:46:23 +0000 Subject: [PATCH] drm/i915: Add dynamic page trace events 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 Signed-off-by: Michel Thierry Reviewed-by: Mika Kuoppala Signed-off-by: Daniel Vetter --- 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 538cae2ca94e..c13e65994654 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -3512,6 +3512,8 @@ 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 641d3f45aa1e..e33b1214c4d8 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -1225,6 +1225,7 @@ 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; @@ -1240,6 +1241,10 @@ 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 f004d3d89b87..b3070a4501ab 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), -- 2.20.1