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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-11-24 19:30:58 +0300 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-12-01 22:07:16 +0300 |
| commit | 4bcdf1522fb11b6c3a3dabe4432b54da2bd6bc0e (patch) | |
| tree | 46343572932223c431d3188b4e8b6ed54874178d /arch/x86/kernel/mcount_64.S | |
| parent | 76c2f13c5515979adab5de3ebda27c309f459a7b (diff) | |
| download | linux-4bcdf1522fb11b6c3a3dabe4432b54da2bd6bc0e.tar.xz | |
ftrace/x86: Move MCOUNT_SAVE_FRAME out of header file
Linus pointed out that MCOUNT_SAVE_FRAME is used in only a single file
and that there's no reason that it should be in a header file.
Move the macro to the code that uses it.
Link: http://lkml.kernel.org/r/CA+55aFwF+qCGSKdGaEgW4p6N65GZ5_XTV=1NbtWDvxnd5yYLiw@mail.gmail.com
Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1411262304010.3961@nanos
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'arch/x86/kernel/mcount_64.S')
| -rw-r--r-- | arch/x86/kernel/mcount_64.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/x86/kernel/mcount_64.S b/arch/x86/kernel/mcount_64.S index 24842c701660..94fe46725fe0 100644 --- a/arch/x86/kernel/mcount_64.S +++ b/arch/x86/kernel/mcount_64.S @@ -21,6 +21,35 @@ # define function_hook mcount #endif +/* skip is set if the stack was already partially adjusted */ +.macro MCOUNT_SAVE_FRAME skip=0 + /* + * We add enough stack to save all regs. + */ + subq $(SS+8-\skip), %rsp + movq %rax, RAX(%rsp) + movq %rcx, RCX(%rsp) + movq %rdx, RDX(%rsp) + movq %rsi, RSI(%rsp) + movq %rdi, RDI(%rsp) + movq %r8, R8(%rsp) + movq %r9, R9(%rsp) + /* Move RIP to its proper location */ + movq SS+8(%rsp), %rdx + movq %rdx, RIP(%rsp) + .endm + +.macro MCOUNT_RESTORE_FRAME skip=0 + movq R9(%rsp), %r9 + movq R8(%rsp), %r8 + movq RDI(%rsp), %rdi + movq RSI(%rsp), %rsi + movq RDX(%rsp), %rdx + movq RCX(%rsp), %rcx + movq RAX(%rsp), %rax + addq $(SS+8-\skip), %rsp + .endm + /* skip is set if stack has been adjusted */ .macro ftrace_caller_setup trace_label skip=0 MCOUNT_SAVE_FRAME \skip |