diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/ftrace.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/mcount_64.S | 11 |
2 files changed, 6 insertions, 9 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index 60881d91943..2142376dc8c 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -871,7 +871,7 @@ static void *addr_from_call(void *ptr) return ptr + MCOUNT_INSN_SIZE + calc.offset; } -void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr, +void prepare_ftrace_return(unsigned long self_addr, unsigned long *parent, unsigned long frame_pointer); /* @@ -964,7 +964,7 @@ int ftrace_disable_ftrace_graph_caller(void) * Hook the return address and push it in the stack of return addrs * in current thread info. */ -void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr, +void prepare_ftrace_return(unsigned long self_addr, unsigned long *parent, unsigned long frame_pointer) { unsigned long old; diff --git a/arch/x86/kernel/mcount_64.S b/arch/x86/kernel/mcount_64.S index ddc766efa1f..94ea120fa21 100644 --- a/arch/x86/kernel/mcount_64.S +++ b/arch/x86/kernel/mcount_64.S @@ -124,7 +124,7 @@ /* * Now %rdi (the first parameter) has the return address of * where ftrace_call returns. But the callbacks expect the - * the address of the call itself. + * address of the call itself. */ subq $MCOUNT_INSN_SIZE, %rdi .endm @@ -289,21 +289,18 @@ END(function_hook) #ifdef CONFIG_FUNCTION_GRAPH_TRACER ENTRY(ftrace_graph_caller) - /* Saves rbp into %rdx */ + /* Saves rbp into %rdx and fills first parameter */ save_mcount_regs #ifdef CC_USING_FENTRY - leaq MCOUNT_REG_SIZE+8(%rsp), %rdi + leaq MCOUNT_REG_SIZE+8(%rsp), %rsi movq $0, %rdx /* No framepointers needed */ #else /* Save address of the return address of traced function */ - leaq 8(%rdx), %rdi + leaq 8(%rdx), %rsi /* ftrace does sanity checks against frame pointers */ movq (%rdx), %rdx #endif - movq RIP(%rsp), %rsi - subq $MCOUNT_INSN_SIZE, %rsi - call prepare_ftrace_return restore_mcount_regs |