From 15da95656dc44538fa71e3c00fc65db05b4a4788 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 24 May 2016 14:53:43 +0100 Subject: [PATCH] drm/i915/debugfs: Show context objects in i915_gem_objects One of the uses for i915_gem_objects is pin-pointing leaks. For this, we can compare the number of allocated objects and who owns them, a discrepancy here often indicates a kernel bug. One allocator of unreported objects is for backing context objects, so include those in the listing. v2: Take filelist_mutex which requires a little dance with struct_mutex to avoid nesting filelist_mutex inside struct_mutex. Signed-off-by: Chris Wilson Cc: Tvrtko Ursulin Cc: Joonas Lahtinen Reviewed-by: Tvrtko Ursulin Link: http://patchwork.freedesktop.org/patch/msgid/1464098023-3294-10-git-send-email-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_debugfs.c | 38 ++++++++++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 757dc0f2c0af..b29ba16c90b3 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -417,6 +417,42 @@ static void print_batch_pool_stats(struct seq_file *m, print_file_stats(m, "[k]batch pool", stats); } +static int per_file_ctx_stats(int id, void *ptr, void *data) +{ + struct i915_gem_context *ctx = ptr; + int n; + + for (n = 0; n < ARRAY_SIZE(ctx->engine); n++) { + if (ctx->engine[n].state) + per_file_stats(0, ctx->engine[n].state, data); + if (ctx->engine[n].ringbuf) + per_file_stats(0, ctx->engine[n].ringbuf->obj, data); + } + + return 0; +} + +static void print_context_stats(struct seq_file *m, + struct drm_i915_private *dev_priv) +{ + struct file_stats stats; + struct drm_file *file; + + memset(&stats, 0, sizeof(stats)); + + mutex_lock(&dev_priv->dev->struct_mutex); + if (dev_priv->kernel_context) + per_file_ctx_stats(0, dev_priv->kernel_context, &stats); + + list_for_each_entry(file, &dev_priv->dev->filelist, lhead) { + struct drm_i915_file_private *fpriv = file->driver_priv; + idr_for_each(&fpriv->context_idr, per_file_ctx_stats, &stats); + } + mutex_unlock(&dev_priv->dev->struct_mutex); + + print_file_stats(m, "[k]contexts", stats); +} + #define count_vmas(list, member) do { \ list_for_each_entry(vma, list, member) { \ size += i915_gem_obj_total_ggtt_size(vma->obj); \ @@ -521,10 +557,10 @@ static int i915_gem_object_info(struct seq_file *m, void* data) seq_putc(m, '\n'); print_batch_pool_stats(m, dev_priv); - mutex_unlock(&dev->struct_mutex); mutex_lock(&dev->filelist_mutex); + print_context_stats(m, dev_priv); list_for_each_entry_reverse(file, &dev->filelist, lhead) { struct file_stats stats; struct task_struct *task; -- 2.20.1