Merge branches 'core-fixes-for-linus' and 'irq-fixes-for-linus' of git://git.kernel...

[pandora-kernel.git] / arch / powerpc / kernel / ftrace.c

diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c
index 2d182f1..bf99cfa 100644 (file)
--- a/arch/powerpc/kernel/ftrace.c
+++ b/arch/powerpc/kernel/ftrace.c
@@ -22,26 +22,16 @@
 #include <asm/cacheflush.h>
 #include <asm/code-patching.h>
 #include <asm/ftrace.h>
+#include <asm/syscall.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)
-{
-       return PPC_INST_NOP;
-}
-
 static unsigned int
 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);
@@ -49,14 +39,6 @@ ftrace_call_replace(unsigned long ip, unsigned long addr, int link)
        return op;
 }
 
-#ifdef CONFIG_PPC64
-# define _ASM_ALIGN    " .align 3 "
-# define _ASM_PTR      " .llong "
-#else
-# define _ASM_ALIGN    " .align 2 "
-# define _ASM_PTR      " .long "
-#endif
-
 static int
 ftrace_modify_code(unsigned long ip, unsigned int old, unsigned int new)
 {
@@ -197,7 +179,7 @@ __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;
        }
@@ -328,7 +310,7 @@ int ftrace_make_nop(struct module *mod,
        if (test_24bit_addr(ip, addr)) {
                /* within range */
                old = ftrace_call_replace(ip, addr, 1);
-               new = ftrace_nop_replace();
+               new = PPC_INST_NOP;
                return ftrace_modify_code(ip, old, new);
        }
 
@@ -466,7 +448,7 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
         */
        if (test_24bit_addr(ip, addr)) {
                /* within range */
-               old = ftrace_nop_replace();
+               old = PPC_INST_NOP;
                new = ftrace_call_replace(ip, addr, 1);
                return ftrace_modify_code(ip, old, new);
        }
@@ -570,7 +552,7 @@ 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
@@ -605,7 +587,7 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
                return;
        }
 
-       if (ftrace_push_return_trace(old, self_addr, &trace.depth) == -EBUSY) {
+       if (ftrace_push_return_trace(old, self_addr, &trace.depth, 0) == -EBUSY) {
                *parent = old;
                return;
        }
@@ -619,3 +601,10 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
        }
 }
 #endif /* CONFIG_FUNCTION_GRAPH_TRACER */
+
+#if defined(CONFIG_FTRACE_SYSCALLS) && defined(CONFIG_PPC64)
+unsigned long __init arch_syscall_addr(int nr)
+{
+       return sys_call_table[nr*2];
+}
+#endif /* CONFIG_FTRACE_SYSCALLS && CONFIG_PPC64 */