Attachment 150925 Details for Bug 228540 – The kallsyms patch for RHEL5 2.6.18-8.EL5 kernel

[patch] The kallsyms patch for RHEL5 2.6.18-8.EL5 kernel

kallsyms.rhel5.patch (text/plain), 2.75 KB, created by Robert Peterson on 2007-03-26 18:13:44 UTC

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Creator: Robert Peterson

Created: 2007-03-26 18:13:44 UTC

Size: 2.75 KB

patch

obsolete

>--- linux-2.6.18.i686/include/linux/kallsyms.h	2006-09-19 22:42:06.000000000 -0500
>+++ linux-2.6.18.i686.patched/include/linux/kallsyms.h	2007-03-26 11:12:14.000000000 -0500
>@@ -7,6 +7,8 @@
> 
> 
> #define KSYM_NAME_LEN 127
>+#define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + KSYM_NAME_LEN +    \
>+		2*(BITS_PER_LONG*3/10) + MODULE_NAME_LEN + 1)
> 
> #ifdef CONFIG_KALLSYMS
> /* Lookup the address for a symbol. Returns 0 if not found. */
>@@ -18,7 +20,10 @@ const char *kallsyms_lookup(unsigned lon
> 			    unsigned long *offset,
> 			    char **modname, char *namebuf);
> 
>-/* Replace "%s" in format with address, if found */
>+/* Look up a kernel symbol and return it in a text buffer. */
>+extern int sprint_symbol(char *buffer, unsigned long address);
>+
>+/* Look up a kernel symbol and print it to the kernel messages. */ 
> extern void __print_symbol(const char *fmt, unsigned long address);
> 
> #else /* !CONFIG_KALLSYMS */
>@@ -36,6 +41,11 @@ static inline const char *kallsyms_looku
> 	return NULL;
> }
> 
>+static inline void sprint_symbol(char *buffer, unsigned long addr)
>+{
>+	return;
>+}
>+
> /* Stupid that this does nothing, but I didn't create this mess. */
> #define __print_symbol(fmt, addr)
> #endif /*CONFIG_KALLSYMS*/
>--- linux-2.6.18.i686/kernel/kallsyms.c	2007-03-20 08:38:32.000000000 -0500
>+++ linux-2.6.18.i686.patched/kernel/kallsyms.c	2007-03-26 11:11:59.000000000 -0500
>@@ -229,27 +229,33 @@ const char *kallsyms_lookup(unsigned lon
> 	return NULL;
> }
> 
>-/* Replace "%s" in format with address, or returns -errno. */
>-void __print_symbol(const char *fmt, unsigned long address)
>+/* Look up a kernel symbol and return it in a text buffer. */
>+int sprint_symbol(char *buffer, unsigned long address)
> {
> 	char *modname;
> 	const char *name;
> 	unsigned long offset, size;
> 	char namebuf[KSYM_NAME_LEN+1];
>-	char buffer[sizeof("%s+%#lx/%#lx [%s]") + KSYM_NAME_LEN +
>-		    2*(BITS_PER_LONG*3/10) + MODULE_NAME_LEN + 1];
> 
> 	name = kallsyms_lookup(address, &size, &offset, &modname, namebuf);
>-
> 	if (!name)
>-		sprintf(buffer, "0x%lx", address);
>+		return sprintf(buffer, "0x%lx", address);
> 	else {
> 		if (modname)
>-			sprintf(buffer, "%s+%#lx/%#lx [%s]", name, offset,
>-				size, modname);
>+			return sprintf(buffer, "%s+%#lx/%#lx [%s]", name,
>+				       offset, size, modname);
> 		else
>-			sprintf(buffer, "%s+%#lx/%#lx", name, offset, size);
>+			return sprintf(buffer, "%s+%#lx/%#lx", name, offset,
>+				       size);
> 	}
>+}
>+
>+/* Look up a kernel symbol and print it to the kernel messages. */
>+void __print_symbol(const char *fmt, unsigned long address)
>+{
>+	char buffer[KSYM_SYMBOL_LEN];
>+
>+	sprint_symbol(buffer, address);
> 	printk(fmt, buffer);
> }
> 
>@@ -418,3 +424,4 @@ static int __init kallsyms_init(void)
> __initcall(kallsyms_init);
> 
> EXPORT_SYMBOL(__print_symbol);
>+EXPORT_SYMBOL_GPL(sprint_symbol);

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Attachments on bug 228540: 148091 | 148880 | 149026 | 149854 | 150918 | 150925 | 150936 | 152978