On 15/03/2024 16:28, John Ogness wrote:
On 2024-03-15, Jocelyn Falempe wrote:
+static inline int drm_panic_trylock(struct drm_device *dev, unsigned long
*flags)
+{
+ return raw_spin_trylock_irqsave(>mode_config.panic_lock, *flags);
+}
[...]
+static inline unsigned long
On 2024-03-15, Jocelyn Falempe wrote:
> +static inline int drm_panic_trylock(struct drm_device *dev, unsigned long
> *flags)
> +{
> + return raw_spin_trylock_irqsave(>mode_config.panic_lock, *flags);
> +}
[...]
> +static inline unsigned long drm_panic_lock(struct drm_device *dev)
> +{
> +
From: Daniel Vetter
Rough sketch for the locking of drm panic printing code. The upshot of
this approach is that we can pretty much entirely rely on the atomic
commit flow, with the pair of raw_spin_lock/unlock providing any
barriers we need, without having to create really big critical
sections
