diff options
| author | Rob Clark <robdclark@chromium.org> | 2021-06-14 18:06:18 +0300 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2021-06-23 17:33:55 +0300 |
| commit | 5434941fd45d30dadc7e9e1227cf109bb3796d22 (patch) | |
| tree | 2c84a6bbb6b666ad237dec6df3723a9b74ddf76c /drivers/gpu/drm/msm/msm_debugfs.c | |
| parent | c96348a8fbff90ef610b0323218e9d585683bdd2 (diff) | |
| download | linux-5434941fd45d30dadc7e9e1227cf109bb3796d22.tar.xz | |
drm/msm: Add debugfs to trigger shrinker
Just for the purposes of testing. Write to it the # of objects to scan,
read back the # freed.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Link: https://lore.kernel.org/r/20210614150618.729610-1-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_debugfs.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_debugfs.c b/drivers/gpu/drm/msm/msm_debugfs.c index 6be5fdbea2f1..09d2d279c30a 100644 --- a/drivers/gpu/drm/msm/msm_debugfs.c +++ b/drivers/gpu/drm/msm/msm_debugfs.c @@ -108,6 +108,31 @@ static const struct file_operations msm_gpu_fops = { .release = msm_gpu_release, }; +static unsigned long last_shrink_freed; + +static int +shrink_get(void *data, u64 *val) +{ + *val = last_shrink_freed; + + return 0; +} + +static int +shrink_set(void *data, u64 val) +{ + struct drm_device *dev = data; + + last_shrink_freed = msm_gem_shrinker_shrink(dev, val); + + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(shrink_fops, + shrink_get, shrink_set, + "0x%08llx\n"); + + static int msm_gem_show(struct drm_device *dev, struct seq_file *m) { struct msm_drm_private *priv = dev->dev_private; @@ -229,6 +254,9 @@ void msm_debugfs_init(struct drm_minor *minor) debugfs_create_u32("hangcheck_period_ms", 0600, minor->debugfs_root, &priv->hangcheck_period); + debugfs_create_file("shrink", S_IRWXU, minor->debugfs_root, + dev, &shrink_fops); + if (priv->kms && priv->kms->funcs->debugfs_init) priv->kms->funcs->debugfs_init(priv->kms, minor); } |