lib/crc: Move files into lib/crc/

Move all CRC files in lib/ into a subdirectory lib/crc/ to keep them
from cluttering up the main lib/ directory.

Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com>
Link: https://lore.kernel.org/r/20250607200454.73587-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

1 files changed, 0 insertions, 95 deletions

diff --git a/lib/gen_crc64table.c b/lib/gen_crc64table.c
deleted file mode 100644
index e05a4230a0a0..000000000000
--- a/lib/gen_crc64table.c
+++ /dev/null
@@ -1,95 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Generate lookup table for the table-driven CRC64 calculation.
- *
- * gen_crc64table is executed in kernel build time and generates
- * lib/crc64table.h. This header is included by lib/crc64.c for
- * the table-driven CRC64 calculation.
- *
- * See lib/crc64.c for more information about which specification
- * and polynomial arithmetic that gen_crc64table.c follows to
- * generate the lookup table.
- *
- * Copyright 2018 SUSE Linux.
- *   Author: Coly Li <colyli@suse.de>
- */
-#include <inttypes.h>
-#include <stdio.h>
-
-#define CRC64_ECMA182_POLY 0x42F0E1EBA9EA3693ULL
-#define CRC64_NVME_POLY 0x9A6C9329AC4BC9B5ULL
-
-static uint64_t crc64_table[256] = {0};
-static uint64_t crc64_nvme_table[256] = {0};
-
-static void generate_reflected_crc64_table(uint64_t table[256], uint64_t poly)
-{
-	uint64_t i, j, c, crc;
-
-	for (i = 0; i < 256; i++) {
-		crc = 0ULL;
-		c = i;
-
-		for (j = 0; j < 8; j++) {
-			if ((crc ^ (c >> j)) & 1)
-				crc = (crc >> 1) ^ poly;
-			else
-				crc >>= 1;
-		}
-		table[i] = crc;
-	}
-}
-
-static void generate_crc64_table(uint64_t table[256], uint64_t poly)
-{
-	uint64_t i, j, c, crc;
-
-	for (i = 0; i < 256; i++) {
-		crc = 0;
-		c = i << 56;
-
-		for (j = 0; j < 8; j++) {
-			if ((crc ^ c) & 0x8000000000000000ULL)
-				crc = (crc << 1) ^ poly;
-			else
-				crc <<= 1;
-			c <<= 1;
-		}
-
-		table[i] = crc;
-	}
-}
-
-static void output_table(uint64_t table[256])
-{
-	int i;
-
-	for (i = 0; i < 256; i++) {
-		printf("\t0x%016" PRIx64 "ULL", table[i]);
-		if (i & 0x1)
-			printf(",\n");
-		else
-			printf(", ");
-	}
-	printf("};\n");
-}
-
-static void print_crc64_tables(void)
-{
-	printf("/* this file is generated - do not edit */\n\n");
-	printf("#include <linux/types.h>\n");
-	printf("#include <linux/cache.h>\n\n");
-	printf("static const u64 ____cacheline_aligned crc64table[256] = {\n");
-	output_table(crc64_table);
-
-	printf("\nstatic const u64 ____cacheline_aligned crc64nvmetable[256] = {\n");
-	output_table(crc64_nvme_table);
-}
-
-int main(int argc, char *argv[])
-{
-	generate_crc64_table(crc64_table, CRC64_ECMA182_POLY);
-	generate_reflected_crc64_table(crc64_nvme_table, CRC64_NVME_POLY);
-	print_crc64_tables();
-	return 0;
-}