Quoting Matthew Auld (2020-11-27 12:06:50)
From: Sudeep Dutt sudeep.dutt@intel.com
Signed-off-by: Sudeep Dutt sudeep.dutt@intel.com
drivers/gpu/drm/i915/gem/i915_gem_region.c | 16 ++++++++++++++-- drivers/gpu/drm/i915/i915_debugfs.c | 3 +++ drivers/gpu/drm/i915/i915_drv.h | 2 ++ 3 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_region.c b/drivers/gpu/drm/i915/gem/i915_gem_region.c index ed108dbcb34e..4fab9f6b4bee 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_region.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_region.c @@ -15,6 +15,7 @@ i915_gem_object_swapout_pages(struct drm_i915_gem_object *obj, { struct drm_i915_private *i915 = to_i915(obj->base.dev); struct drm_i915_gem_object *dst, *src;
unsigned long start, diff, msec; int err; GEM_BUG_ON(obj->swapto);@@ -24,6 +25,7 @@ i915_gem_object_swapout_pages(struct drm_i915_gem_object *obj, GEM_BUG_ON(!i915->params.enable_eviction);
assert_object_held(obj);
start = jiffies; /* create a shadow object on smem region */ dst = i915_gem_object_create_shmem(i915, obj->base.size);@@ -64,8 +66,12 @@ i915_gem_object_swapout_pages(struct drm_i915_gem_object *obj, else i915_gem_object_put(dst);
if (!err)
if (!err) {diff = jiffies - start;msec = diff * 1000 / HZ;atomic_long_add(msec, &i915->time_swap_out_ms); atomic_long_add(sizes, &i915->num_bytes_swapped_out);}
This can be done using a kprobe, and with prettier statistics as builtin functionality. -Chris