ftrace: rename ftrace_instruction_pointer_set() -> ftrace_regs_set_instruction_pointer()

In subsequent patches we'll add a sew of ftrace_regs_{get,set}_*()
helpers. In preparation, this patch renames
ftrace_instruction_pointer_set() to
ftrace_regs_set_instruction_pointer().

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Florent Revest <revest@chromium.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20221103170520.931305-3-mark.rutland@arm.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h
index 3cee711..c3eb48f 100644 (file)
--- a/arch/powerpc/include/asm/ftrace.h
+++ b/arch/powerpc/include/asm/ftrace.h
@@ -37,8 +37,9 @@ static __always_inline struct pt_regs *arch_ftrace_get_regs(struct ftrace_regs *
        return fregs->regs.msr ? &fregs->regs : NULL;
 }
 
-static __always_inline void ftrace_instruction_pointer_set(struct ftrace_regs *fregs,
-                                                          unsigned long ip)
+static __always_inline void
+ftrace_regs_set_instruction_pointer(struct ftrace_regs *fregs,
+                                   unsigned long ip)
 {
        regs_set_return_ip(&fregs->regs, ip);
 }

diff --git a/arch/s390/include/asm/ftrace.h b/arch/s390/include/asm/ftrace.h
index 85bc26c..113d194 100644 (file)
--- a/arch/s390/include/asm/ftrace.h
+++ b/arch/s390/include/asm/ftrace.h
@@ -54,8 +54,9 @@ static __always_inline struct pt_regs *arch_ftrace_get_regs(struct ftrace_regs *
        return NULL;
 }
 
-static __always_inline void ftrace_instruction_pointer_set(struct ftrace_regs *fregs,
-                                                          unsigned long ip)
+static __always_inline void
+ftrace_regs_set_instruction_pointer(struct ftrace_regs *fregs,
+                                   unsigned long ip)
 {
        fregs->regs.psw.addr = ip;
 }

diff --git a/arch/x86/include/asm/ftrace.h b/arch/x86/include/asm/ftrace.h
index d2350a8..b2925d3 100644 (file)
--- a/arch/x86/include/asm/ftrace.h
+++ b/arch/x86/include/asm/ftrace.h
@@ -48,7 +48,7 @@ arch_ftrace_get_regs(struct ftrace_regs *fregs)
        return &fregs->regs;
 }
 
-#define ftrace_instruction_pointer_set(fregs, _ip)     \
+#define ftrace_regs_set_instruction_pointer(fregs, _ip)        \
        do { (fregs)->regs.ip = (_ip); } while (0)
 
 struct ftrace_ops;

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index f201fcb..ec3657a 100644 (file)
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -111,12 +111,11 @@ struct ftrace_regs {
 #define arch_ftrace_get_regs(fregs) (&(fregs)->regs)
 
 /*
- * ftrace_instruction_pointer_set() is to be defined by the architecture
- * if to allow setting of the instruction pointer from the ftrace_regs
- * when HAVE_DYNAMIC_FTRACE_WITH_ARGS is set and it supports
- * live kernel patching.
+ * ftrace_regs_set_instruction_pointer() is to be defined by the architecture
+ * if to allow setting of the instruction pointer from the ftrace_regs when
+ * HAVE_DYNAMIC_FTRACE_WITH_ARGS is set and it supports live kernel patching.
  */
-#define ftrace_instruction_pointer_set(fregs, ip) do { } while (0)
+#define ftrace_regs_set_instruction_pointer(fregs, ip) do { } while (0)
 #endif /* CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS */
 
 static __always_inline struct pt_regs *ftrace_get_regs(struct ftrace_regs *fregs)

diff --git a/kernel/livepatch/patch.c b/kernel/livepatch/patch.c
index 4c4f5a7..4152c71 100644 (file)
--- a/kernel/livepatch/patch.c
+++ b/kernel/livepatch/patch.c
@@ -118,7 +118,7 @@ static void notrace klp_ftrace_handler(unsigned long ip,
        if (func->nop)
                goto unlock;
 
-       ftrace_instruction_pointer_set(fregs, (unsigned long)func->new_func);
+       ftrace_regs_set_instruction_pointer(fregs, (unsigned long)func->new_func);
 
 unlock:
        ftrace_test_recursion_unlock(bit);