diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/syscalls.h | 22 | ||||
| -rw-r--r-- | include/trace/syscall.h | 8 |
2 files changed, 26 insertions, 4 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 5e5b4d33a31..ce4b01c658e 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -116,13 +116,20 @@ struct perf_counter_attr; #define SYSCALL_TRACE_ENTER_EVENT(sname) \ static struct ftrace_event_call event_enter_##sname; \ + struct trace_event enter_syscall_print_##sname = { \ + .trace = print_syscall_enter, \ + }; \ static int init_enter_##sname(void) \ { \ - int num; \ + int num, id; \ num = syscall_name_to_nr("sys"#sname); \ if (num < 0) \ return -ENOSYS; \ - register_ftrace_event(&event_syscall_enter); \ + id = register_ftrace_event(&enter_syscall_print_##sname);\ + if (!id) \ + return -ENODEV; \ + event_enter_##sname.id = id; \ + set_syscall_enter_id(num, id); \ INIT_LIST_HEAD(&event_enter_##sname.fields); \ init_preds(&event_enter_##sname); \ return 0; \ @@ -142,13 +149,20 @@ struct perf_counter_attr; #define SYSCALL_TRACE_EXIT_EVENT(sname) \ static struct ftrace_event_call event_exit_##sname; \ + struct trace_event exit_syscall_print_##sname = { \ + .trace = print_syscall_exit, \ + }; \ static int init_exit_##sname(void) \ { \ - int num; \ + int num, id; \ num = syscall_name_to_nr("sys"#sname); \ if (num < 0) \ return -ENOSYS; \ - register_ftrace_event(&event_syscall_exit); \ + id = register_ftrace_event(&exit_syscall_print_##sname);\ + if (!id) \ + return -ENODEV; \ + event_exit_##sname.id = id; \ + set_syscall_exit_id(num, id); \ INIT_LIST_HEAD(&event_exit_##sname.fields); \ init_preds(&event_exit_##sname); \ return 0; \ diff --git a/include/trace/syscall.h b/include/trace/syscall.h index 73fb8b4a995..df628404241 100644 --- a/include/trace/syscall.h +++ b/include/trace/syscall.h @@ -32,23 +32,31 @@ DECLARE_TRACE_WITH_CALLBACK(syscall_exit, * @nb_args: number of parameters it takes * @types: list of types as strings * @args: list of args as strings (args[i] matches types[i]) + * @enter_id: associated ftrace enter event id + * @exit_id: associated ftrace exit event id */ struct syscall_metadata { const char *name; int nb_args; const char **types; const char **args; + int enter_id; + int exit_id; }; #ifdef CONFIG_FTRACE_SYSCALLS extern struct syscall_metadata *syscall_nr_to_meta(int nr); extern int syscall_name_to_nr(char *name); +void set_syscall_enter_id(int num, int id); +void set_syscall_exit_id(int num, int id); extern struct trace_event event_syscall_enter; extern struct trace_event event_syscall_exit; extern int reg_event_syscall_enter(void *ptr); extern void unreg_event_syscall_enter(void *ptr); extern int reg_event_syscall_exit(void *ptr); extern void unreg_event_syscall_exit(void *ptr); +enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags); +enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags); #endif #endif /* _TRACE_SYSCALL_H */ |