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ftrace: Make ftrace_modify_all_code() global for archs to use 

Rename __ftrace_modify_code() to ftrace_modify_all_code() and make
it global for all archs to use. This will remove the duplication
of code, as archs that can modify code without stop_machine()
can use it directly outside of the stop_machine() call.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2012-04-26 14:59:43 -04:00 committed by Steven Rostedt
parent f0cf973a22
commit 8ed3e2cfe4
2 changed files with 19 additions and 12 deletions
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2
include/linux/ftrace.h
View File

@ -319,6 +319,8 @@ extern void ftrace_caller(void);
extern void ftrace_call(void);
extern void mcount_call(void);
void ftrace_modify_all_code(int command);
#ifndef FTRACE_ADDR
#define FTRACE_ADDR ((unsigned long)ftrace_caller)
#endif

29
kernel/trace/ftrace.c
View File

@ -1811,22 +1811,27 @@ int __weak ftrace_arch_code_modify_post_process(void)
return 0;
}
void ftrace_modify_all_code(int command)
{
if (command & FTRACE_UPDATE_CALLS)
ftrace_replace_code(1);
else if (command & FTRACE_DISABLE_CALLS)
ftrace_replace_code(0);
if (command & FTRACE_UPDATE_TRACE_FUNC)
ftrace_update_ftrace_func(ftrace_trace_function);
if (command & FTRACE_START_FUNC_RET)
ftrace_enable_ftrace_graph_caller();
else if (command & FTRACE_STOP_FUNC_RET)
ftrace_disable_ftrace_graph_caller();
}
static int __ftrace_modify_code(void *data)
{
int *command = data;
if (*command & FTRACE_UPDATE_CALLS)
ftrace_replace_code(1);
else if (*command & FTRACE_DISABLE_CALLS)
ftrace_replace_code(0);
if (*command & FTRACE_UPDATE_TRACE_FUNC)
ftrace_update_ftrace_func(ftrace_trace_function);
if (*command & FTRACE_START_FUNC_RET)
ftrace_enable_ftrace_graph_caller();
else if (*command & FTRACE_STOP_FUNC_RET)
ftrace_disable_ftrace_graph_caller();
ftrace_modify_all_code(*command);
return 0;
}