提交 4818d809 编写于 作者: J Jiri Olsa 提交者: Steven Rostedt

tracing/function-graph: x86_64 stack allocation cleanup

Only 24 bytes needs to be reserved on the stack for the function graph
tracer on x86_64.
Signed-off-by: NJiri Olsa <jolsa@redhat.com>
LKML-Reference: <20090729085837.GB4998@jolsa.lab.eng.brq.redhat.com>
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
上级 4b3b4c5e
......@@ -146,7 +146,7 @@ ENTRY(ftrace_graph_caller)
END(ftrace_graph_caller)
GLOBAL(return_to_handler)
subq $80, %rsp
subq $24, %rsp
/* Save the return values */
movq %rax, (%rsp)
......@@ -155,10 +155,10 @@ GLOBAL(return_to_handler)
call ftrace_return_to_handler
movq %rax, 72(%rsp)
movq %rax, 16(%rsp)
movq 8(%rsp), %rdx
movq (%rsp), %rax
addq $72, %rsp
addq $16, %rsp
retq
#endif
......
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