ipconfig: handle case of delayed DHCP server

[pandora-kernel.git] / scripts / kallsyms.c

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index ad2434b..6654cbe 100644 (file)
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -500,6 +500,51 @@ static void optimize_token_table(void)
        optimize_result();
 }
 
+/* guess for "linker script provide" symbol */
+static int may_be_linker_script_provide_symbol(const struct sym_entry *se)
+{
+       const char *symbol = (char *)se->sym + 1;
+       int len = se->len - 1;
+
+       if (len < 8)
+               return 0;
+
+       if (symbol[0] != '_' || symbol[1] != '_')
+               return 0;
+
+       /* __start_XXXXX */
+       if (!memcmp(symbol + 2, "start_", 6))
+               return 1;
+
+       /* __stop_XXXXX */
+       if (!memcmp(symbol + 2, "stop_", 5))
+               return 1;
+
+       /* __end_XXXXX */
+       if (!memcmp(symbol + 2, "end_", 4))
+               return 1;
+
+       /* __XXXXX_start */
+       if (!memcmp(symbol + len - 6, "_start", 6))
+               return 1;
+
+       /* __XXXXX_end */
+       if (!memcmp(symbol + len - 4, "_end", 4))
+               return 1;
+
+       return 0;
+}
+
+static int prefix_underscores_count(const char *str)
+{
+       const char *tail = str;
+
+       while (*tail != '_')
+               tail++;
+
+       return tail - str;
+}
+
 static int compare_symbols(const void *a, const void *b)
 {
        const struct sym_entry *sa;
@@ -521,6 +566,18 @@ static int compare_symbols(const void *a, const void *b)
        if (wa != wb)
                return wa - wb;
 
+       /* sort by "linker script provide" type */
+       wa = may_be_linker_script_provide_symbol(sa);
+       wb = may_be_linker_script_provide_symbol(sb);
+       if (wa != wb)
+               return wa - wb;
+
+       /* sort by the number of prefix underscores */
+       wa = prefix_underscores_count((const char *)sa->sym + 1);
+       wb = prefix_underscores_count((const char *)sb->sym + 1);
+       if (wa != wb)
+               return wa - wb;
+
        /* sort by initial order, so that other symbols are left undisturbed */
        return sa->start_pos - sb->start_pos;
 }