diff options
| author | Steven Rostedt <rostedt@goodmis.org> | 2013-11-13 21:20:04 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-01-09 22:24:29 +0100 |
| commit | 1739f09e33d8f66bf48ddbc3eca615574da6c4f6 (patch) | |
| tree | cb6bbe381ad28a345d4a69565835bfb328fdba1c /arch/x86/kernel/entry_32.S | |
| parent | Linux 3.13-rc7 (diff) | |
| download | linux-1739f09e33d8f66bf48ddbc3eca615574da6c4f6.tar.xz linux-1739f09e33d8f66bf48ddbc3eca615574da6c4f6.zip | |
ftrace/x86: Load ftrace_ops in parameter not the variable holding it
Function tracing callbacks expect to have the ftrace_ops that registered it
passed to them, not the address of the variable that holds the ftrace_ops
that registered it.
Use a mov instead of a lea to store the ftrace_ops into the parameter
of the function tracing callback.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Link: http://lkml.kernel.org/r/20131113152004.459787f9@gandalf.local.home
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org> # v3.8+
Diffstat (limited to 'arch/x86/kernel/entry_32.S')
| -rw-r--r-- | arch/x86/kernel/entry_32.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 51e2988c5728..a2a4f4697889 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -1082,7 +1082,7 @@ ENTRY(ftrace_caller) pushl $0 /* Pass NULL as regs pointer */ movl 4*4(%esp), %eax movl 0x4(%ebp), %edx - leal function_trace_op, %ecx + movl function_trace_op, %ecx subl $MCOUNT_INSN_SIZE, %eax .globl ftrace_call @@ -1140,7 +1140,7 @@ ENTRY(ftrace_regs_caller) movl 12*4(%esp), %eax /* Load ip (1st parameter) */ subl $MCOUNT_INSN_SIZE, %eax /* Adjust ip */ movl 0x4(%ebp), %edx /* Load parent ip (2nd parameter) */ - leal function_trace_op, %ecx /* Save ftrace_pos in 3rd parameter */ + movl function_trace_op, %ecx /* Save ftrace_pos in 3rd parameter */ pushl %esp /* Save pt_regs as 4th parameter */ GLOBAL(ftrace_regs_call) |