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-rw-r--r--arch/x86/kernel/ftrace.c15
-rw-r--r--include/linux/ftrace.h1
-rw-r--r--kernel/trace/ftrace.c4
3 files changed, 5 insertions, 15 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 4243e8bbdcb1..32ff36596ab1 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -435,7 +435,7 @@ static void run_sync(void)
435 local_irq_disable(); 435 local_irq_disable();
436} 436}
437 437
438static void ftrace_replace_code(int enable) 438void ftrace_replace_code(int enable)
439{ 439{
440 struct ftrace_rec_iter *iter; 440 struct ftrace_rec_iter *iter;
441 struct dyn_ftrace *rec; 441 struct dyn_ftrace *rec;
@@ -493,18 +493,7 @@ void arch_ftrace_update_code(int command)
493{ 493{
494 modifying_ftrace_code++; 494 modifying_ftrace_code++;
495 495
496 if (command & FTRACE_UPDATE_CALLS) 496 ftrace_modify_all_code(command);
497 ftrace_replace_code(1);
498 else if (command & FTRACE_DISABLE_CALLS)
499 ftrace_replace_code(0);
500
501 if (command & FTRACE_UPDATE_TRACE_FUNC)
502 ftrace_update_ftrace_func(ftrace_trace_function);
503
504 if (command & FTRACE_START_FUNC_RET)
505 ftrace_enable_ftrace_graph_caller();
506 else if (command & FTRACE_STOP_FUNC_RET)
507 ftrace_disable_ftrace_graph_caller();
508 497
509 modifying_ftrace_code--; 498 modifying_ftrace_code--;
510} 499}
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index cd72ace7ade3..55e6d63d46d0 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -314,6 +314,7 @@ ftrace_set_early_filter(struct ftrace_ops *ops, char *buf, int enable);
314/* defined in arch */ 314/* defined in arch */
315extern int ftrace_ip_converted(unsigned long ip); 315extern int ftrace_ip_converted(unsigned long ip);
316extern int ftrace_dyn_arch_init(void *data); 316extern int ftrace_dyn_arch_init(void *data);
317extern void ftrace_replace_code(int enable);
317extern int ftrace_update_ftrace_func(ftrace_func_t func); 318extern int ftrace_update_ftrace_func(ftrace_func_t func);
318extern void ftrace_caller(void); 319extern void ftrace_caller(void);
319extern void ftrace_call(void); 320extern void ftrace_call(void);
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 3c345825cc23..a008663d86c8 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1683,7 +1683,7 @@ __ftrace_replace_code(struct dyn_ftrace *rec, int enable)
1683 return -1; /* unknow ftrace bug */ 1683 return -1; /* unknow ftrace bug */
1684} 1684}
1685 1685
1686static void ftrace_replace_code(int update) 1686void __weak ftrace_replace_code(int enable)
1687{ 1687{
1688 struct dyn_ftrace *rec; 1688 struct dyn_ftrace *rec;
1689 struct ftrace_page *pg; 1689 struct ftrace_page *pg;
@@ -1693,7 +1693,7 @@ static void ftrace_replace_code(int update)
1693 return; 1693 return;
1694 1694
1695 do_for_each_ftrace_rec(pg, rec) { 1695 do_for_each_ftrace_rec(pg, rec) {
1696 failed = __ftrace_replace_code(rec, update); 1696 failed = __ftrace_replace_code(rec, enable);
1697 if (failed) { 1697 if (failed) {
1698 ftrace_bug(failed, rec->ip); 1698 ftrace_bug(failed, rec->ip);
1699 /* Stop processing */ 1699 /* Stop processing */