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[contrib][linux] Add zstd_common module

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The zstd_common module was added upstream in commit
637a642f5c.

But the kernel specific code was inlined into the library. This commit
switches it to use the out of line method that we use for the other
modules.
This commit is contained in:
Nick Terrell 2022-10-17 13:07:41 -07:00 committed by Nick Terrell
parent dcc7228de9
commit 330558ad52
4 changed files with 44 additions and 12 deletions
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1
contrib/linux-kernel/Makefile
View File

@ -60,6 +60,7 @@ libzstd:
mv linux/lib/zstd/zstd.h linux/include/linux/zstd_lib.h
mv linux/lib/zstd/zstd_errors.h linux/include/linux/
cp linux_zstd.h linux/include/linux/zstd.h
cp zstd_common_module.c linux/lib/zstd
cp zstd_compress_module.c linux/lib/zstd
cp zstd_decompress_module.c linux/lib/zstd
cp decompress_sources.h linux/lib/zstd

21
contrib/linux-kernel/linux.mk
View File

@ -10,16 +10,10 @@
# ################################################################
obj-$(CONFIG_ZSTD_COMPRESS) += zstd_compress.o
obj-$(CONFIG_ZSTD_DECOMPRESS) += zstd_decompress.o
ccflags-y += -Wno-error=deprecated-declarations
obj-$(CONFIG_ZSTD_COMMON) += zstd_common.o
zstd_compress-y := \
zstd_compress_module.o \
common/debug.o \
common/entropy_common.o \
common/error_private.o \
common/fse_decompress.o \
common/zstd_common.o \
compress/fse_compress.o \
compress/hist.o \
compress/huf_compress.o \
@ -35,13 +29,16 @@ zstd_compress-y := \
zstd_decompress-y := \
zstd_decompress_module.o \
decompress/huf_decompress_amd64.o \
decompress/huf_decompress.o \
decompress/zstd_ddict.o \
decompress/zstd_decompress.o \
decompress/zstd_decompress_block.o \
zstd_common-y := \
zstd_common_module.o \
common/debug.o \
common/entropy_common.o \
common/error_private.o \
common/fse_decompress.o \
common/zstd_common.o \
decompress/huf_decompress.o \
decompress/huf_decompress_amd64.o \
decompress/zstd_ddict.o \
decompress/zstd_decompress.o \
decompress/zstd_decompress_block.o \

2
contrib/linux-kernel/test/include/linux/module.h
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@ -12,6 +12,8 @@
#define EXPORT_SYMBOL(symbol) \
void* __##symbol = symbol
#define EXPORT_SYMBOL_GPL(symbol) \
void* __##symbol = symbol
#define MODULE_LICENSE(license)
#define MODULE_DESCRIPTION(description)

32
contrib/linux-kernel/zstd_common_module.c Normal file
View File

@ -0,0 +1,32 @@
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
* Copyright (c) Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
#include <linux/module.h>
#include "common/huf.h"
#include "common/fse.h"
#include "common/zstd_internal.h"
// Export symbols shared by compress and decompress into a common module
#undef ZSTD_isError /* defined within zstd_internal.h */
EXPORT_SYMBOL_GPL(FSE_readNCount);
EXPORT_SYMBOL_GPL(HUF_readStats);
EXPORT_SYMBOL_GPL(HUF_readStats_wksp);
EXPORT_SYMBOL_GPL(ZSTD_isError);
EXPORT_SYMBOL_GPL(ZSTD_getErrorName);
EXPORT_SYMBOL_GPL(ZSTD_getErrorCode);
EXPORT_SYMBOL_GPL(ZSTD_customMalloc);
EXPORT_SYMBOL_GPL(ZSTD_customCalloc);
EXPORT_SYMBOL_GPL(ZSTD_customFree);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("Zstd Common");