Simplify out blake3_impl_module

Signed-off-by: Ryan Moeller <ryan@iXsystems.com>

Author: Ryan Moeller

module/icp/algs/blake3/blake3_impl.c

@@ -70,9 +70,6 @@ static uint32_t blake3_supp_impls_cnt = 0;
 /* Currently selected implementation */
 static uint32_t blake3_impl_chosen = IMPL_FASTEST;
 
-/* Implementation given via module paramter */
-static uint32_t blake3_impl_module = IMPL_FASTEST;
-
 static struct blake3_impl_selector {
 	const char *name;
 	uint32_t sel;
@@ -143,13 +140,6 @@ blake3_impl_set_fastest(uint32_t id)
 	/* setup fastest impl */
 	memcpy(&blake3_fastest_impl, blake3_supp_impls[id],
 	    sizeof (blake3_fastest_impl));
-
-	/* when module paramter was set, take this impl */
-	if (blake3_impl_module != IMPL_FASTEST) {
-		blake3_impl_setid(blake3_impl_module);
-	} else {
-		blake3_impl_setid(IMPL_FASTEST);
-	}
 }
 
 /* set implementation by id */
@@ -314,10 +304,7 @@ static int
 blake3_param_set(const char *val, zfs_kernel_param_t *unused)
 {
 	(void) unused;
-	int err;
-	err = blake3_impl_setname(val);
-	atomic_swap_32(&blake3_impl_module, blake3_impl_chosen);
-	return (err);
+	return (blake3_impl_setname(val));
 }
 
 #elif defined(__FreeBSD__)

module/zfs/zfs_chksum.c

@@ -291,6 +291,7 @@ chksum_benchmark(void)
 	chksum_benchit(cs);
 
 	/* blake3 */
+	uint32_t sel_save = blake3_impl_getid();
 	for (id = 0; id < blake3_impl_getcnt(); id++) {
 		blake3_impl_setid(id);
 		cs = &chksum_stat_data[cbid++];
@@ -305,9 +306,8 @@ chksum_benchmark(void)
 			fid = id;
 		}
 	}
-
-	/* init blake3 fastest impl and setup default one */
 	blake3_impl_set_fastest(fid);
+	blake3_impl_setid(sel_save);
 }
 
 void