generic: early (incomplete!) 4.0 support

Signed-off-by: Rafał Miłecki <zajec5@gmail.com> SVN-Revision: 44511
2015-02-23 22:59:53 +00:00
parent ad077832bf
commit 1c063070cf
177 changed files with 32126 additions and 0 deletions
--- a/target/linux/generic/patches-4.0/203-kallsyms_uncompressed.patch
+++ b/target/linux/generic/patches-4.0/203-kallsyms_uncompressed.patch
@@ -0,0 +1,108 @@
+--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
+@@ -58,6 +58,7 @@ static struct addr_range percpu_range =
+ static struct sym_entry *table;
+ static unsigned int table_size, table_cnt;
+ static int all_symbols = 0;
+static int uncompressed = 0;
+ static int absolute_percpu = 0;
+ static char symbol_prefix_char = '\0';
+ static unsigned long long kernel_start_addr = 0;
+@@ -392,6 +393,9 @@ static void write_src(void)
+ 
+ 	free(markers);
+ 
+	if (uncompressed)
+		return;
+
+ 	output_label("kallsyms_token_table");
+ 	off = 0;
+ 	for (i = 0; i < 256; i++) {
+@@ -450,6 +454,9 @@ 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];
+@@ -522,6 +529,9 @@ 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--) {
+@@ -692,7 +702,9 @@ int main(int argc, char **argv)
+ 			} else if (strncmp(argv[i], "--page-offset=", 14) == 0) {
+ 				const char *p = &argv[i][14];
+ 				kernel_start_addr = strtoull(p, NULL, 16);
+-			} else
+			} else if (strcmp(argv[i], "--uncompressed") == 0)
+				uncompressed = 1;
+			else
+ 				usage();
+ 		}
+ 	} else if (argc != 1)
+--- a/init/Kconfig
+++ b/init/Kconfig
+@@ -1324,6 +1324,17 @@ config SYSCTL_ARCH_UNALIGN_ALLOW
+ 	  the unaligned access emulation.
+ 	  see arch/parisc/kernel/unaligned.c for reference
+ 
+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 HAVE_PCSPKR_PLATFORM
+ 	bool
+ 
+--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
+@@ -90,6 +90,10 @@ kallsyms()
+ 		kallsymopt="${kallsymopt} --absolute-percpu"
+ 	fi
+ 
+	if [ -n "${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
+@@ -109,6 +109,11 @@ 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++;
+@@ -141,6 +146,9 @@ tail:
+  */
+ 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.