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sections: fix const sections for crc32 table

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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.

[[email protected]: some fixes and new description]
[[email protected]: checkpatch fixes]
Signed-off-by: Joe Mario <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Joe Mario authored and Linus Torvalds committed 2012-10-06 03:04:46 +09:00
1 parent c7fd5bc77e
commit 8f243af42a
2 files changed
+9 -6
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lib/crc32.c
+6 -3
View File
@@ -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
View File
@@ -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,