diff options
| author | Peter Zijlstra | 2020-04-01 16:50:40 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2020-04-22 10:53:50 +0200 |
| commit | dc2745b61907cf6faeb72cc25f2cc4b38d4a3cac (patch) | |
| tree | 20739c34710df618937193230776aa5d91a0a570 /arch/x86/kernel/ftrace_64.S | |
| parent | 0298739b7983cf9bf4fcfb4bfb815c539bdb87ca (diff) | |
x86,ftrace: Use SIZEOF_PTREGS
There's a convenient macro for 'SS+8' called FRAME_SIZE. Use it to
clarify things.
(entry/calling.h calls this SIZEOF_PTREGS but we're using
asm/ptrace-abi.h)
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20200416115118.808485515@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/ftrace_64.S')
| -rw-r--r-- | arch/x86/kernel/ftrace_64.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/ftrace_64.S b/arch/x86/kernel/ftrace_64.S index 7657dc782828..be9aff20dd5f 100644 --- a/arch/x86/kernel/ftrace_64.S +++ b/arch/x86/kernel/ftrace_64.S @@ -23,7 +23,7 @@ #endif /* CONFIG_FRAME_POINTER */ /* Size of stack used to save mcount regs in save_mcount_regs */ -#define MCOUNT_REG_SIZE (SS+8 + MCOUNT_FRAME_SIZE) +#define MCOUNT_REG_SIZE (FRAME_SIZE + MCOUNT_FRAME_SIZE) /* * gcc -pg option adds a call to 'mcount' in most functions. @@ -77,7 +77,7 @@ /* * We add enough stack to save all regs. */ - subq $(MCOUNT_REG_SIZE - MCOUNT_FRAME_SIZE), %rsp + subq $(FRAME_SIZE), %rsp movq %rax, RAX(%rsp) movq %rcx, RCX(%rsp) movq %rdx, RDX(%rsp) |