btrfs-progs: crypto: add common function for accelerated initialization

Prepare a single location that will detect or set accelerated versions
of hash algorithms. Right now it's the crc32c, blake2 and sha256 do
an if-else switch while crc32c sets a function pointer.

Signed-off-by: David Sterba <dsterba@suse.com>

btrfs.c

@@ -22,7 +22,8 @@
 #include <stdbool.h>
 #include <strings.h>
 #include "kernel-shared/volumes.h"
-#include "crypto/crc32c.h"
+#include "crypto/hash.h"
+#include "common/cpu-utils.h"
 #include "common/utils.h"
 #include "common/string-utils.h"
 #include "common/help.h"
@@ -403,9 +404,8 @@ int main(int argc, char **argv)
 	cmd = parse_command_token(argv[0], &btrfs_cmd_group);
 
 	handle_help_options_next_level(cmd, argc, argv);
-
-	crc32c_optimization_init();
-
+	cpu_detect_flags();
+	hash_init_accel();
 	fixup_argv0(argv, cmd->token);
 
 	ret = cmd_execute(cmd, argc, argv);

convert/main.c

@@ -99,10 +99,11 @@
 #include "kernel-shared/disk-io.h"
 #include "kernel-shared/volumes.h"
 #include "kernel-shared/transaction.h"
-#include "crypto/crc32c.h"
+#include "crypto/hash.h"
 #include "common/defs.h"
 #include "common/extent-cache.h"
 #include "common/internal.h"
+#include "common/cpu-utils.h"
 #include "common/messages.h"
 #include "common/task-utils.h"
 #include "common/path-utils.h"
@@ -1834,7 +1835,8 @@ int BOX_MAIN(convert)(int argc, char *argv[])
 	u32 copy_fsid = 0;
 	char fsid[BTRFS_UUID_UNPARSED_SIZE] = {0};
 
-	crc32c_optimization_init();
+	cpu_detect_flags();
+	hash_init_accel();
 	btrfs_assert_feature_buf_size();
 	printf("btrfs-convert from %s\n\n", PACKAGE_STRING);
 

crypto/hash-speedtest.c

@@ -203,6 +203,7 @@ int main(int argc, char **argv) {
 
 	cpu_detect_flags();
 	cpu_print_flags();
+	hash_init_accel();
 
 	optind = 0;
 	while (1) {
@@ -248,7 +249,6 @@ int main(int argc, char **argv) {
 			iterations = 1;
 	}
 
-	crc32c_optimization_init();
 	memset(buf, 0, 4096);
 
 	printf("Block size:     %d\n", blocksize);

crypto/hash.c

@@ -20,6 +20,11 @@
 #include "crypto/sha.h"
 #include "crypto/blake2.h"
 
+void hash_init_accel(void)
+{
+	crc32c_optimization_init();
+}
+
 /*
  * Default builtin implementations
  */

crypto/hash.h

@@ -26,4 +26,6 @@ int hash_xxhash(const u8 *buf, size_t length, u8 *out);
 int hash_sha256(const u8 *buf, size_t length, u8 *out);
 int hash_blake2b(const u8 *buf, size_t length, u8 *out);
 
+void hash_init_accel(void);
+
 #endif

image/main.c

@@ -40,8 +40,10 @@
 #include "kernel-shared/volumes.h"
 #include "kernel-shared/extent_io.h"
 #include "crypto/crc32c.h"
+#include "crypto/hash.h"
 #include "common/internal.h"
 #include "common/messages.h"
+#include "common/cpu-utils.h"
 #include "common/box.h"
 #include "common/utils.h"
 #include "common/extent-cache.h"
@@ -494,9 +496,6 @@ static int metadump_init(struct metadump_struct *md, struct btrfs_root *root,
 	md->pending_start = (u64)-1;
 	md->compress_level = compress_level;
 	md->sanitize_names = sanitize_names;
-	if (sanitize_names == SANITIZE_COLLISIONS)
-		crc32c_optimization_init();
-
 	md->name_tree.rb_node = NULL;
 	md->num_threads = num_threads;
 	pthread_cond_init(&md->cond, NULL);
@@ -3074,6 +3073,9 @@ int BOX_MAIN(image)(int argc, char *argv[])
 	int usage_error = 0;
 	FILE *out;
 
+	cpu_detect_flags();
+	hash_init_accel();
+
 	while (1) {
 		static const struct option long_options[] = {
 			{ "help", no_argument, NULL, GETOPT_VAL_HELP},

mkfs/main.c

@@ -38,10 +38,11 @@
 #include "kernel-shared/volumes.h"
 #include "kernel-shared/transaction.h"
 #include "kernel-shared/zoned.h"
-#include "crypto/crc32c.h"
+#include "crypto/hash.h"
 #include "common/defs.h"
 #include "common/internal.h"
 #include "common/messages.h"
+#include "common/cpu-utils.h"
 #include "common/utils.h"
 #include "common/path-utils.h"
 #include "common/device-utils.h"
@@ -1034,7 +1035,8 @@ int BOX_MAIN(mkfs)(int argc, char **argv)
 	char *source_dir = NULL;
 	bool source_dir_set = false;
 
-	crc32c_optimization_init();
+	cpu_detect_flags();
+	hash_init_accel();
 	btrfs_config_init();
 	btrfs_assert_feature_buf_size();