[PATCH 14/17] powerpc/ftrace: Replace use of ftrace_call_replace() with ftrace_create_branch_inst()
Naveen N Rao
naveen at kernel.org
Mon Jun 19 19:47:32 AEST 2023
ftrace_create_branch_inst() is clearer about its intent than
ftrace_call_replace().
Signed-off-by: Naveen N Rao <naveen at kernel.org>
---
arch/powerpc/kernel/trace/ftrace.c | 17 ++---------------
1 file changed, 2 insertions(+), 15 deletions(-)
diff --git a/arch/powerpc/kernel/trace/ftrace.c b/arch/powerpc/kernel/trace/ftrace.c
index c37e22c6c26521..422dd760fbe013 100644
--- a/arch/powerpc/kernel/trace/ftrace.c
+++ b/arch/powerpc/kernel/trace/ftrace.c
@@ -41,19 +41,6 @@ static ppc_inst_t ftrace_create_branch_inst(unsigned long ip, unsigned long addr
return op;
}
-static ppc_inst_t
-ftrace_call_replace(unsigned long ip, unsigned long addr, int link)
-{
- ppc_inst_t op;
-
- addr = ppc_function_entry((void *)addr);
-
- /* if (link) set op to 'bl' else 'b' */
- create_branch(&op, (u32 *)ip, addr, link ? BRANCH_SET_LINK : 0);
-
- return op;
-}
-
static inline int ftrace_read_inst(unsigned long ip, ppc_inst_t *op)
{
if (copy_inst_from_kernel_nofault(op, (void *)ip)) {
@@ -275,14 +262,14 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
int ret;
old = ppc_inst_read((u32 *)&ftrace_call);
- new = ftrace_call_replace(ip, (unsigned long)func, 1);
+ new = ftrace_create_branch_inst(ip, ppc_function_entry(func), 1);
ret = ftrace_modify_code(ip, old, new);
/* Also update the regs callback function */
if (IS_ENABLED(CONFIG_DYNAMIC_FTRACE_WITH_REGS) && !ret) {
ip = (unsigned long)(&ftrace_regs_call);
old = ppc_inst_read((u32 *)&ftrace_regs_call);
- new = ftrace_call_replace(ip, (unsigned long)func, 1);
+ new = ftrace_create_branch_inst(ip, ppc_function_entry(func), 1);
ret = ftrace_modify_code(ip, old, new);
}
--
2.40.1
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