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authorMichael Ellerman <michael@ellerman.id.au>2009-05-28 19:33:34 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-06-02 10:36:32 +1000
commit4a9e3f8e94d6740fbd3f149f2aa4caa82a6427ed (patch)
tree6c1e3f51142a30b4efc52ca9db3447458b6ed190 /arch
parentf03cdb3a66901bb301b9d06ac0690de00d99ad39 (diff)
powerpc/ftrace: Use ppc_function_entry() instead of GET_ADDR
Use ppc_function_entry() from code-patching.h. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/ftrace.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c
index 2d182f119d1..f7eadf5ddec 100644
--- a/arch/powerpc/kernel/ftrace.c
+++ b/arch/powerpc/kernel/ftrace.c
@@ -23,12 +23,6 @@
#include <asm/code-patching.h>
#include <asm/ftrace.h>
-#ifdef CONFIG_PPC32
-# define GET_ADDR(addr) addr
-#else
-/* PowerPC64's functions are data that points to the functions */
-# define GET_ADDR(addr) (*(unsigned long *)addr)
-#endif
#ifdef CONFIG_DYNAMIC_FTRACE
static unsigned int ftrace_nop_replace(void)
@@ -41,7 +35,7 @@ ftrace_call_replace(unsigned long ip, unsigned long addr, int link)
{
unsigned int op;
- addr = GET_ADDR(addr);
+ addr = ppc_function_entry((void *)addr);
/* if (link) set op to 'bl' else 'b' */
op = create_branch((unsigned int *)ip, addr, link ? 1 : 0);
@@ -197,7 +191,7 @@ __ftrace_make_nop(struct module *mod,
ptr = ((unsigned long)jmp[0] << 32) + jmp[1];
/* This should match what was called */
- if (ptr != GET_ADDR(addr)) {
+ if (ptr != ppc_function_entry((void *)addr)) {
printk(KERN_ERR "addr does not match %lx\n", ptr);
return -EINVAL;
}
@@ -570,7 +564,7 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
return_hooker = (unsigned long)&mod_return_to_handler;
#endif
- return_hooker = GET_ADDR(return_hooker);
+ return_hooker = ppc_function_entry((void *)return_hooker);
/*
* Protect against fault, even if it shouldn't