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drm/msm: export hangcheck_period in debugfs

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While keeping the previous default value for hangcheck period,
we allow now the possibility of configuring its value via
debugfs.

Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Link: https://lore.kernel.org/r/20210607104441.184700-1-siglesias@igalia.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Samuel Iglesias Gonsalvez 2021-06-07 12:44:41 +02:00 committed by Rob Clark
parent f6d62d091c
commit 1d2fa58e0d
5 changed files with 10 additions and 3 deletions
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3
drivers/gpu/drm/msm/msm_debugfs.c
View File

@ -226,6 +226,9 @@ void msm_debugfs_init(struct drm_minor *minor)
debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root,
dev, &msm_gpu_fops);
debugfs_create_u32("hangcheck_period_ms", 0600, minor->debugfs_root,
&priv->hangcheck_period);
if (priv->kms && priv->kms->funcs->debugfs_init)
priv->kms->funcs->debugfs_init(priv->kms, minor);
}

1
drivers/gpu/drm/msm/msm_drv.c
View File

@ -459,6 +459,7 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv)
mdss = priv->mdss;
priv->wq = alloc_ordered_workqueue("msm", 0);
priv->hangcheck_period = DRM_MSM_HANGCHECK_DEFAULT_PERIOD;
INIT_LIST_HEAD(&priv->objects);
mutex_init(&priv->obj_lock);

3
drivers/gpu/drm/msm/msm_drv.h
View File

@ -244,6 +244,9 @@ struct msm_drm_private {
struct shrinker shrinker;
struct drm_atomic_state *pm_state;
/* For hang detection, in ms */
unsigned int hangcheck_period;
};
struct msm_format {

3
drivers/gpu/drm/msm/msm_gpu.c
View File

@ -561,8 +561,9 @@ static void recover_worker(struct kthread_work *work)
static void hangcheck_timer_reset(struct msm_gpu *gpu)
{
struct msm_drm_private *priv = gpu->dev->dev_private;
mod_timer(&gpu->hangcheck_timer,
round_jiffies_up(jiffies + DRM_MSM_HANGCHECK_JIFFIES));
round_jiffies_up(jiffies + msecs_to_jiffies(priv->hangcheck_period)));
}
static void hangcheck_handler(struct timer_list *t)

3
drivers/gpu/drm/msm/msm_gpu.h
View File

@ -122,8 +122,7 @@ struct msm_gpu {
*/
#define DRM_MSM_INACTIVE_PERIOD 66 /* in ms (roughly four frames) */
#define DRM_MSM_HANGCHECK_PERIOD 500 /* in ms */
#define DRM_MSM_HANGCHECK_JIFFIES msecs_to_jiffies(DRM_MSM_HANGCHECK_PERIOD)
#define DRM_MSM_HANGCHECK_DEFAULT_PERIOD 500 /* in ms */
struct timer_list hangcheck_timer;
/* work for handling GPU recovery: */