[RFC][PATCH 04/12] ftrace/x86_32: Push ftrace_ops in as 3rd parameter to functiontracer

From: Steven Rostedt
Date: Wed Jun 06 2012 - 00:01:13 EST


From: Steven Rostedt <srostedt@xxxxxxxxxx>

Add support of passing the current ftrace_ops into the 3rd parameter
of the callback to the function tracer.

Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
arch/x86/include/asm/ftrace.h | 3 +--
arch/x86/kernel/entry_32.S | 1 +
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/ftrace.h b/arch/x86/include/asm/ftrace.h
index 1fca3c2..aefea5b 100644
--- a/arch/x86/include/asm/ftrace.h
+++ b/arch/x86/include/asm/ftrace.h
@@ -37,9 +37,8 @@
#define MCOUNT_ADDR ((long)(mcount))
#define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */

-#if defined(CONFIG_DYNAMIC_FTRACE) && defined(CONFIG_X86_64)
+#ifdef CONFIG_DYNAMIC_FTRACE
#define ARCH_SUPPORTS_FTRACE_OPS 1
-#define ARCH_SUPPORTS_FTRACE_SAVE_REGS 1
#endif

#ifndef __ASSEMBLY__
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 01ccf9b..189c93f 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -1104,6 +1104,7 @@ ENTRY(ftrace_caller)
pushl %edx
movl 0xc(%esp), %eax
movl 0x4(%ebp), %edx
+ leal function_trace_op, %ecx
subl $MCOUNT_INSN_SIZE, %eax

.globl ftrace_call
--
1.7.10


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