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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 <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1464098023-3294-10-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-05-24 14:53:43 +01:00
parent 8d59bc6ae9
commit 15da95656d
1 changed files with 37 additions and 1 deletions
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38
drivers/gpu/drm/i915/i915_debugfs.c
View File

@ -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;