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| author | Jiri Kosina <jkosina@suse.cz> | 2017-05-02 11:02:41 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2017-05-02 11:02:41 +0200 |
| commit | 4d6ca227c768b50b05cf183974b40abe444e9d0c (patch) | |
| tree | bf953d8e895281053548b9967a2c4b58d641df00 /drivers/gpu/drm/lib/drm_random.h | |
| parent | 800f3eef8ebc1264e9c135bfa892c8ae41fa4792 (diff) | |
| parent | af22a610bc38508d5ea760507d31be6b6983dfa8 (diff) | |
Merge branch 'for-4.12/asus' into for-linus
Diffstat (limited to 'drivers/gpu/drm/lib/drm_random.h')
| -rw-r--r-- | drivers/gpu/drm/lib/drm_random.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/lib/drm_random.h b/drivers/gpu/drm/lib/drm_random.h new file mode 100644 index 000000000000..a78644bea7f9 --- /dev/null +++ b/drivers/gpu/drm/lib/drm_random.h @@ -0,0 +1,25 @@ +#ifndef __DRM_RANDOM_H__ +#define __DRM_RANDOM_H__ + +/* This is a temporary home for a couple of utility functions that should + * be transposed to lib/ at the earliest convenience. + */ + +#include <linux/random.h> + +#define DRM_RND_STATE_INITIALIZER(seed__) ({ \ + struct rnd_state state__; \ + prandom_seed_state(&state__, (seed__)); \ + state__; \ +}) + +#define DRM_RND_STATE(name__, seed__) \ + struct rnd_state name__ = DRM_RND_STATE_INITIALIZER(seed__) + +unsigned int *drm_random_order(unsigned int count, + struct rnd_state *state); +void drm_random_reorder(unsigned int *order, + unsigned int count, + struct rnd_state *state); + +#endif /* !__DRM_RANDOM_H__ */ |