diff options
| -rw-r--r-- | target/linux/generic/config-3.7 | 1 | ||||
| -rw-r--r-- | target/linux/generic/patches-3.7/203-kallsyms_uncompressed.patch | 108 |
2 files changed, 109 insertions, 0 deletions
diff --git a/target/linux/generic/config-3.7 b/target/linux/generic/config-3.7 index b761d6c8ad..f2147e1294 100644 --- a/target/linux/generic/config-3.7 +++ b/target/linux/generic/config-3.7 @@ -1343,6 +1343,7 @@ CONFIG_JOLIET=y # CONFIG_JUMP_LABEL is not set # CONFIG_KALLSYMS is not set # CONFIG_KALLSYMS_ALL is not set +CONFIG_KALLSYMS_UNCOMPRESSED=y # CONFIG_KARMA_PARTITION is not set # CONFIG_KERNEL_BZIP2 is not set # CONFIG_KERNEL_GZIP is not set diff --git a/target/linux/generic/patches-3.7/203-kallsyms_uncompressed.patch b/target/linux/generic/patches-3.7/203-kallsyms_uncompressed.patch new file mode 100644 index 0000000000..57655aae23 --- /dev/null +++ b/target/linux/generic/patches-3.7/203-kallsyms_uncompressed.patch @@ -0,0 +1,108 @@ +--- a/scripts/kallsyms.c ++++ b/scripts/kallsyms.c +@@ -83,6 +83,7 @@ static struct text_range text_ranges[] = + static struct sym_entry *table; + static unsigned int table_size, table_cnt; + static int all_symbols = 0; ++static int uncompressed = 0; + static char symbol_prefix_char = '\0'; + + int token_profit[0x10000]; +@@ -389,6 +390,9 @@ static void write_src(void) + + free(markers); + ++ if (uncompressed) ++ return; ++ + output_label("kallsyms_token_table"); + off = 0; + for (i = 0; i < 256; i++) { +@@ -447,6 +451,9 @@ static void *find_token(unsigned char *s + { + int i; + ++ if (uncompressed) ++ return NULL; ++ + for (i = 0; i < len - 1; i++) { + if (str[i] == token[0] && str[i+1] == token[1]) + return &str[i]; +@@ -519,6 +526,9 @@ static void optimize_result(void) + { + int i, best; + ++ if (uncompressed) ++ return; ++ + /* using the '\0' symbol last allows compress_symbols to use standard + * fast string functions */ + for (i = 255; i >= 0; i--) { +@@ -675,7 +685,9 @@ int main(int argc, char **argv) + if ((*p == '"' && *(p+2) == '"') || (*p == '\'' && *(p+2) == '\'')) + p++; + symbol_prefix_char = *p; +- } else ++ } else if (strcmp(argv[i], "--uncompressed") == 0) ++ uncompressed = 1; ++ else + usage(); + } + } else if (argc != 1) +--- a/init/Kconfig ++++ b/init/Kconfig +@@ -1198,6 +1198,17 @@ config KALLSYMS_ALL + + Say N unless you really need all symbols. + ++config KALLSYMS_UNCOMPRESSED ++ bool "Keep kallsyms uncompressed" ++ depends on KALLSYMS ++ help ++ Normally kallsyms contains compressed symbols (using a token table), ++ reducing the uncompressed kernel image size. Keeping the symbol table ++ uncompressed significantly improves the size of this part in compressed ++ kernel images. ++ ++ Say N unless you need compressed kernel images to be small. ++ + config HOTPLUG + def_bool y + +--- a/scripts/link-vmlinux.sh ++++ b/scripts/link-vmlinux.sh +@@ -83,6 +83,10 @@ kallsyms() + kallsymopt="${kallsymopt} --all-symbols" + fi + ++ if [ -n "${CONFIG_KALLSYMS_UNCOMPRESSED}" ]; then ++ kallsymopt="${kallsymopt} --uncompressed" ++ fi ++ + local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \ + ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}" + +--- a/kernel/kallsyms.c ++++ b/kernel/kallsyms.c +@@ -106,6 +106,11 @@ static unsigned int kallsyms_expand_symb + * For every byte on the compressed symbol data, copy the table + * entry for that byte. + */ ++#ifdef CONFIG_KALLSYMS_UNCOMPRESSED ++ memcpy(result, data + 1, len - 1); ++ result += len - 1; ++ len = 0; ++#endif + while (len) { + tptr = &kallsyms_token_table[kallsyms_token_index[*data]]; + data++; +@@ -133,6 +138,9 @@ static unsigned int kallsyms_expand_symb + */ + static char kallsyms_get_symbol_type(unsigned int off) + { ++#ifdef CONFIG_KALLSYMS_UNCOMPRESSED ++ return kallsyms_names[off + 1]; ++#endif + /* + * Get just the first code, look it up in the token table, + * and return the first char from this token. |