mirror of https://gitee.com/openkylin/linux.git
drm/i915: Make debugfs/per_file_stats scale better
Currently we walk the entire list of obj->vma for each obj within a file to find the matching vma of this context. Since we know we are searching for a particular vma bound to a user context, we can use the rbtree to search for it rather than repeatedly walk everything. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190808162407.28121-1-chris@chris-wilson.co.uk
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@ -240,7 +240,6 @@ struct file_stats {
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struct i915_address_space *vm;
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unsigned long count;
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u64 total, unbound;
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u64 global, shared;
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u64 active, inactive;
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u64 closed;
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};
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@ -251,48 +250,64 @@ static int per_file_stats(int id, void *ptr, void *data)
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struct file_stats *stats = data;
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struct i915_vma *vma;
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lockdep_assert_held(&obj->base.dev->struct_mutex);
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stats->count++;
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stats->total += obj->base.size;
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if (!atomic_read(&obj->bind_count))
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stats->unbound += obj->base.size;
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if (obj->base.name || obj->base.dma_buf)
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stats->shared += obj->base.size;
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list_for_each_entry(vma, &obj->vma.list, obj_link) {
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if (!drm_mm_node_allocated(&vma->node))
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continue;
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if (i915_vma_is_ggtt(vma)) {
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stats->global += vma->node.size;
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} else {
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if (vma->vm != stats->vm)
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spin_lock(&obj->vma.lock);
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if (!stats->vm) {
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for_each_ggtt_vma(vma, obj) {
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if (!drm_mm_node_allocated(&vma->node))
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continue;
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if (i915_vma_is_active(vma))
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stats->active += vma->node.size;
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else
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stats->inactive += vma->node.size;
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if (i915_vma_is_closed(vma))
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stats->closed += vma->node.size;
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}
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} else {
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struct rb_node *p = obj->vma.tree.rb_node;
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if (i915_vma_is_active(vma))
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stats->active += vma->node.size;
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else
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stats->inactive += vma->node.size;
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while (p) {
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long cmp;
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if (i915_vma_is_closed(vma))
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stats->closed += vma->node.size;
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vma = rb_entry(p, typeof(*vma), obj_node);
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cmp = i915_vma_compare(vma, stats->vm, NULL);
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if (cmp == 0) {
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if (drm_mm_node_allocated(&vma->node)) {
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if (i915_vma_is_active(vma))
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stats->active += vma->node.size;
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else
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stats->inactive += vma->node.size;
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if (i915_vma_is_closed(vma))
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stats->closed += vma->node.size;
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}
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break;
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}
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if (cmp < 0)
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p = p->rb_right;
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else
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p = p->rb_left;
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}
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}
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spin_unlock(&obj->vma.lock);
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return 0;
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}
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#define print_file_stats(m, name, stats) do { \
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if (stats.count) \
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seq_printf(m, "%s: %lu objects, %llu bytes (%llu active, %llu inactive, %llu global, %llu shared, %llu unbound, %llu closed)\n", \
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seq_printf(m, "%s: %lu objects, %llu bytes (%llu active, %llu inactive, %llu unbound, %llu closed)\n", \
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name, \
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stats.count, \
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stats.total, \
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stats.active, \
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stats.inactive, \
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stats.global, \
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stats.shared, \
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stats.unbound, \
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stats.closed); \
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} while (0)
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