[PATCH RFC 4/8] powerpc: stacktrace: Make callbacks use new prototype with frame info

[He Zhe]

stack_trace_consume_fn has been changed to
bool (*stack_trace_consume_fn)(void *cookie, struct frame_info *fi);
to be able to pass more information.

Turn to use pc in struct frame_info in arch_stack_walk callbacks without
functinoal change.

Signed-off-by: He Zhe <zhe...@windriver.com>
---
 arch/powerpc/kernel/stacktrace.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/kernel/stacktrace.c b/arch/powerpc/kernel/stacktrace.c
index a2443d61728e..8640e9acfa29 100644
--- a/arch/powerpc/kernel/stacktrace.c
+++ b/arch/powerpc/kernel/stacktrace.c
@@ -28,9 +28,13 @@ void __no_sanitize_address 
arch_stack_walk(stack_trace_consume_fn consume_entry,
                                           struct task_struct *task, struct 
pt_regs *regs)
 {
        unsigned long sp;
+       struct frame_info fi;
 
-       if (regs && !consume_entry(cookie, regs->nip))
-               return;
+       if (regs) {
+               fi.pc = regs->nip;
+               if (!consume_entry(cookie, &fi))
+                       return;
+       }
 
        if (regs)
                sp = regs->gpr[1];
@@ -41,15 +45,15 @@ void __no_sanitize_address 
arch_stack_walk(stack_trace_consume_fn consume_entry,
 
        for (;;) {
                unsigned long *stack = (unsigned long *) sp;
-               unsigned long newsp, ip;
+               unsigned long newsp;
 
                if (!validate_sp(sp, task, STACK_FRAME_OVERHEAD))
                        return;
 
                newsp = stack[0];
-               ip = stack[STACK_FRAME_LR_SAVE];
+               fi.pc = stack[STACK_FRAME_LR_SAVE];
 
-               if (!consume_entry(cookie, ip))
+               if (!consume_entry(cookie, &fi))
                        return;
 
                sp = newsp;
@@ -71,6 +75,7 @@ int __no_sanitize_address 
arch_stack_walk_reliable(stack_trace_consume_fn consum
        unsigned long stack_end;
        int graph_idx = 0;
        bool firstframe;
+       struct frame_info fi;
 
        stack_end = stack_page + THREAD_SIZE;
        if (!is_idle_task(task)) {
@@ -159,7 +164,8 @@ int __no_sanitize_address 
arch_stack_walk_reliable(stack_trace_consume_fn consum
                        return -EINVAL;
 #endif
 
-               if (!consume_entry(cookie, ip))
+               fi.pc = ip;
+               if (!consume_entry(cookie, &fi))
                        return -EINVAL;
        }
        return 0;
-- 
2.25.1