diff options
Diffstat (limited to 'include/drm/drm_util.h')
| -rw-r--r-- | include/drm/drm_util.h | 41 |
1 files changed, 39 insertions, 2 deletions
diff --git a/include/drm/drm_util.h b/include/drm/drm_util.h index 88abdca89baa..440199618620 100644 --- a/include/drm/drm_util.h +++ b/include/drm/drm_util.h @@ -26,7 +26,44 @@ #ifndef _DRM_UTIL_H_ #define _DRM_UTIL_H_ -/* helper for handling conditionals in various for_each macros */ -#define for_each_if(condition) if (!(condition)) {} else +/** + * DOC: drm utils + * + * Macros and inline functions that does not naturally belong in other places + */ + +#include <linux/interrupt.h> +#include <linux/kgdb.h> +#include <linux/preempt.h> +#include <linux/smp.h> +#include <linux/util_macros.h> + +/* + * Use EXPORT_SYMBOL_FOR_TESTS_ONLY() for functions that shall + * only be visible for drmselftests. + */ +#if defined(CONFIG_DRM_EXPORT_FOR_TESTS) +#define EXPORT_SYMBOL_FOR_TESTS_ONLY(x) EXPORT_SYMBOL(x) +#else +#define EXPORT_SYMBOL_FOR_TESTS_ONLY(x) +#endif + +/** + * drm_can_sleep - returns true if currently okay to sleep + * + * This function shall not be used in new code. + * The check for running in atomic context may not work - see linux/preempt.h. + * + * FIXME: All users of drm_can_sleep should be removed (see todo.rst) + * + * Returns: + * False if kgdb is active, we are in atomic context or irqs are disabled. + */ +static inline bool drm_can_sleep(void) +{ + if (in_atomic() || in_dbg_master() || irqs_disabled()) + return false; + return true; +} #endif |