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Commit 8f243af4 authored by Joe Mario's avatar Joe Mario Committed by Linus Torvalds
Browse files

sections: fix const sections for crc32 table 



Fix the const sections for the code generated by crc32 table.  There's
no ro version of the cacheline aligned section, so we cannot put in
const data without a conflict Just don't make the crc tables const for
now.

[ak@linux.intel.com: some fixes and new description]
[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: default avatarJoe Mario <jmario@redhat.com>
Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent c7fd5bc7

lib/crc32.c

+6 −3
Original line number Diff line number Diff line
@@ -188,11 +188,13 @@ u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len) 
#else

u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len)

{

	return crc32_le_generic(crc, p, len, crc32table_le, CRCPOLY_LE);

	return crc32_le_generic(crc, p, len,

			(const u32 (*)[256])crc32table_le, CRCPOLY_LE);

}

u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len)

{

	return crc32_le_generic(crc, p, len, crc32ctable_le, CRC32C_POLY_LE);

	return crc32_le_generic(crc, p, len,

			(const u32 (*)[256])crc32ctable_le, CRC32C_POLY_LE);

}

#endif

EXPORT_SYMBOL(crc32_le);
@@ -253,7 +255,8 @@ u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len) 
#else

u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)

{

	return crc32_be_generic(crc, p, len, crc32table_be, CRCPOLY_BE);

	return crc32_be_generic(crc, p, len,

			(const u32 (*)[256])crc32table_be, CRCPOLY_BE);

}

#endif

EXPORT_SYMBOL(crc32_be);

lib/gen_crc32table.c

+3 −3
Original line number Diff line number Diff line
@@ -109,7 +109,7 @@ int main(int argc, char** argv) 


	if (CRC_LE_BITS > 1) {

		crc32init_le();

		printf("static const u32 __cacheline_aligned "

		printf("static u32 __cacheline_aligned "

		       "crc32table_le[%d][%d] = {",

		       LE_TABLE_ROWS, LE_TABLE_SIZE);

		output_table(crc32table_le, LE_TABLE_ROWS,
@@ -119,7 +119,7 @@ int main(int argc, char** argv) 


	if (CRC_BE_BITS > 1) {

		crc32init_be();

		printf("static const u32 __cacheline_aligned "

		printf("static u32 __cacheline_aligned "

		       "crc32table_be[%d][%d] = {",

		       BE_TABLE_ROWS, BE_TABLE_SIZE);

		output_table(crc32table_be, LE_TABLE_ROWS,
@@ -128,7 +128,7 @@ int main(int argc, char** argv) 
	}

	if (CRC_LE_BITS > 1) {

		crc32cinit_le();

		printf("static const u32 __cacheline_aligned "

		printf("static u32 __cacheline_aligned "

		       "crc32ctable_le[%d][%d] = {",

		       LE_TABLE_ROWS, LE_TABLE_SIZE);

		output_table(crc32ctable_le, LE_TABLE_ROWS,