util/disk_cache: allow drivers to pass a directory structure

In order to avoid costly fallback recompiles when cache items are
created with an old version of Mesa or for a different gpu on the
same system we want to create directories that look like this:

./{TIMESTAMP}_{LLVM_TIMESTAMP}/{GPU_ID}

Note: The disk cache util will take a single timestamp string, it is
up to the backend to concatenate the llvm string with the mesa string
if applicable.

Reviewed-by: Nicolai Hähnle <[email protected]>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/util/disk_cache.h b/src/util/disk_cache.h
index 1f2bf3d9e7d..39062f40a24 100644
--- a/src/util/disk_cache.h
+++ b/src/util/disk_cache.h
@@ -69,7 +69,7 @@ struct disk_cache;
  * assistance in computing SHA-1 signatures.
  */
 struct disk_cache *
-disk_cache_create(void);
+disk_cache_create(const char *gpu_name, const char *timestamp);
 
 /**
  * Destroy a cache object, (freeing all associated resources).
@@ -140,7 +140,7 @@ disk_cache_has_key(struct disk_cache *cache, cache_key key);
 #else
 
 static inline struct disk_cache *
-disk_cache_create(void)
+disk_cache_create(const char *gpu_name, const char *timestamp)
 {
    return NULL;
 }