diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2009-02-14 00:40:25 -0500 |
|---|---|---|
| committer | Steven Rostedt <srostedt@redhat.com> | 2009-02-16 17:06:02 -0500 |
| commit | f6180773d90595650e11de0118bb112018290915 (patch) | |
| tree | ccf8642d7ac584f73e7820fae64fc4daf4546f6b /include | |
| parent | e68746a271eb3393a2183840be9e903caddf765b (diff) | |
ftrace: add command interface for function selection
Allow for other tracers to add their own commands for function
selection. This interface gives a trace the ability to name a
command for function selection. Right now it is pretty limited
in what it offers, but this is a building step for more features.
The :mod: command is converted to this interface and also serves
as a template for other implementations.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ftrace.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 106b7909d50..f0a0ecc63b5 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -95,6 +95,13 @@ stack_trace_sysctl(struct ctl_table *table, int write, loff_t *ppos); #endif +struct ftrace_func_command { + struct list_head list; + char *name; + int (*func)(char *func, char *cmd, + char *params, int enable); +}; + #ifdef CONFIG_DYNAMIC_FTRACE /* asm/ftrace.h must be defined for archs supporting dynamic ftrace */ #include <asm/ftrace.h> @@ -119,6 +126,9 @@ struct dyn_ftrace { int ftrace_force_update(void); void ftrace_set_filter(unsigned char *buf, int len, int reset); +int register_ftrace_command(struct ftrace_func_command *cmd); +int unregister_ftrace_command(struct ftrace_func_command *cmd); + /* defined in arch */ extern int ftrace_ip_converted(unsigned long ip); extern int ftrace_dyn_arch_init(void *data); @@ -202,6 +212,12 @@ extern void ftrace_enable_daemon(void); # define ftrace_disable_daemon() do { } while (0) # define ftrace_enable_daemon() do { } while (0) static inline void ftrace_release(void *start, unsigned long size) { } +static inline int register_ftrace_command(struct ftrace_func_command *cmd) +{ +} +static inline int unregister_ftrace_command(char *cmd_name) +{ +} #endif /* CONFIG_DYNAMIC_FTRACE */ /* totally disable ftrace - can not re-enable after this */ |