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ftrace: move memory management out of arch code

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This patch moves the memory management of the ftrace
records out of the arch code and into the generic code
making the arch code simpler.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Steven Rostedt 2008-05-12 21:20:43 +02:00 • committed by Thomas Gleixner
commit 3c1720f00b
3 changed files with 195 additions and 166 deletions
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18
include/linux/ftrace.h
View file

@ -42,19 +42,23 @@ extern void mcount(void);
# define FTRACE_HASHBITS 10
# define FTRACE_HASHSIZE (1<<FTRACE_HASHBITS)
enum {
FTRACE_FL_FAILED = (1<<0),
};
struct dyn_ftrace {
struct hlist_node node;
unsigned long ip;
unsigned long flags;
};
/* defined in arch */
extern struct dyn_ftrace *
ftrace_alloc_shutdown_node(unsigned long ip);
extern int ftrace_shutdown_arch_init(void);
extern void ftrace_code_disable(struct dyn_ftrace *rec);
extern void ftrace_startup_code(void);
extern void ftrace_shutdown_code(void);
extern void ftrace_shutdown_replenish(void);
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);
extern int ftrace_modify_code(unsigned long ip, unsigned char *old_code,
unsigned char *new_code);
#endif
#ifdef CONFIG_FRAME_POINTER