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authorSteven Rostedt <rostedt@goodmis.org>2008-10-23 09:33:06 -0400
committerIngo Molnar <mingo@elte.hu>2008-10-23 16:00:23 +0200
commit4d296c24326783bff1282ac72f310d8bac8df413 (patch)
tree75751fdafc0fa5818a926478e78dd9e54f1cf872
parentcb7be3b2fc2cf089ee52b16f0fd9ebb29e9944e1 (diff)
ftrace: remove mcount set
The arch dependent function ftrace_mcount_set was only used by the daemon start up code. This patch removes it. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--arch/arm/kernel/ftrace.c13
-rw-r--r--arch/powerpc/kernel/ftrace.c17
-rw-r--r--arch/sparc64/kernel/ftrace.c18
-rw-r--r--arch/x86/kernel/ftrace.c7
-rw-r--r--include/linux/ftrace.h1
-rw-r--r--kernel/trace/ftrace.c9
6 files changed, 0 insertions, 65 deletions
diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c
index 76d50e6091b..6c90479e897 100644
--- a/arch/arm/kernel/ftrace.c
+++ b/arch/arm/kernel/ftrace.c
@@ -95,19 +95,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
return ret;
}
-int ftrace_mcount_set(unsigned long *data)
-{
- unsigned long pc, old;
- unsigned long *addr = data;
- unsigned char *new;
-
- pc = (unsigned long)&mcount_call;
- memcpy(&old, &mcount_call, MCOUNT_INSN_SIZE);
- new = ftrace_call_replace(pc, *addr);
- *addr = ftrace_modify_code(pc, (unsigned char *)&old, new);
- return 0;
-}
-
/* run from kstop_machine */
int __init ftrace_dyn_arch_init(void *data)
{
diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c
index 3855ceb937b..6b75522e8b3 100644
--- a/arch/powerpc/kernel/ftrace.c
+++ b/arch/powerpc/kernel/ftrace.c
@@ -126,23 +126,6 @@ notrace int ftrace_update_ftrace_func(ftrace_func_t func)
return ret;
}
-notrace int ftrace_mcount_set(unsigned long *data)
-{
- unsigned long ip = (long)(&mcount_call);
- unsigned long *addr = data;
- unsigned char old[MCOUNT_INSN_SIZE], *new;
-
- /*
- * Replace the mcount stub with a pointer to the
- * ip recorder function.
- */
- memcpy(old, &mcount_call, MCOUNT_INSN_SIZE);
- new = ftrace_call_replace(ip, *addr);
- *addr = ftrace_modify_code(ip, old, new);
-
- return 0;
-}
-
int __init ftrace_dyn_arch_init(void *data)
{
/* This is running in kstop_machine */
diff --git a/arch/sparc64/kernel/ftrace.c b/arch/sparc64/kernel/ftrace.c
index 4298d0aee71..447942041a7 100644
--- a/arch/sparc64/kernel/ftrace.c
+++ b/arch/sparc64/kernel/ftrace.c
@@ -69,24 +69,6 @@ notrace int ftrace_update_ftrace_func(ftrace_func_t func)
return ftrace_modify_code(ip, old, new);
}
-notrace int ftrace_mcount_set(unsigned long *data)
-{
- unsigned long ip = (long)(&mcount_call);
- unsigned long *addr = data;
- unsigned char old[MCOUNT_INSN_SIZE], *new;
-
- /*
- * Replace the mcount stub with a pointer to the
- * ip recorder function.
- */
- memcpy(old, &mcount_call, MCOUNT_INSN_SIZE);
- new = ftrace_call_replace(ip, *addr);
- *addr = ftrace_modify_code(ip, old, new);
-
- return 0;
-}
-
-
int __init ftrace_dyn_arch_init(void *data)
{
ftrace_mcount_set(data);
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index da4fb0deecf..b399eed2353 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -103,13 +103,6 @@ notrace int ftrace_update_ftrace_func(ftrace_func_t func)
return ret;
}
-notrace int ftrace_mcount_set(unsigned long *data)
-{
- /* mcount is initialized as a nop */
- *data = 0;
- return 0;
-}
-
int __init ftrace_dyn_arch_init(void *data)
{
extern const unsigned char ftrace_test_p6nop[];
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index ac58e94668b..1c4835f8691 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -71,7 +71,6 @@ extern int ftrace_ip_converted(unsigned long ip);
extern unsigned char *ftrace_nop_replace(void);
extern unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr);
extern int ftrace_dyn_arch_init(void *data);
-extern int ftrace_mcount_set(unsigned long *data);
extern int ftrace_update_ftrace_func(ftrace_func_t func);
extern void ftrace_caller(void);
extern void ftrace_call(void);
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index e758cab0836..226fd9132d5 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -620,7 +620,6 @@ static int ftrace_update_code(void *ignore);
static int __ftrace_modify_code(void *data)
{
- unsigned long addr;
int *command = data;
if (*command & FTRACE_ENABLE_CALLS) {
@@ -639,14 +638,6 @@ static int __ftrace_modify_code(void *data)
if (*command & FTRACE_UPDATE_TRACE_FUNC)
ftrace_update_ftrace_func(ftrace_trace_function);
- if (*command & FTRACE_ENABLE_MCOUNT) {
- addr = (unsigned long)ftrace_record_ip;
- ftrace_mcount_set(&addr);
- } else if (*command & FTRACE_DISABLE_MCOUNT) {
- addr = (unsigned long)ftrace_stub;
- ftrace_mcount_set(&addr);
- }
-
return 0;
}