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Frederic Weisbecker47788c52009-04-08 20:40:59 +02001#ifndef _TRACE_SYSCALL_H
2#define _TRACE_SYSCALL_H
3
Jason Barona871bd32009-08-10 16:52:31 -04004#include <linux/tracepoint.h>
Jason Baronfb34a082009-08-10 16:52:47 -04005#include <linux/unistd.h>
6#include <linux/ftrace_event.h>
Jason Barona871bd32009-08-10 16:52:31 -04007
Frederic Weisbecker47788c52009-04-08 20:40:59 +02008#include <asm/ptrace.h>
9
Jason Barona871bd32009-08-10 16:52:31 -040010
Frederic Weisbecker47788c52009-04-08 20:40:59 +020011/*
12 * A syscall entry in the ftrace syscalls array.
13 *
14 * @name: name of the syscall
Lai Jiangshanc252f652009-12-01 16:23:47 +080015 * @syscall_nr: number of the syscall
Frederic Weisbecker47788c52009-04-08 20:40:59 +020016 * @nb_args: number of parameters it takes
17 * @types: list of types as strings
18 * @args: list of args as strings (args[i] matches types[i])
Li Zefan540b7b82009-08-19 15:54:51 +080019 * @enter_event: associated syscall_enter trace event
20 * @exit_event: associated syscall_exit trace event
Frederic Weisbecker47788c52009-04-08 20:40:59 +020021 */
22struct syscall_metadata {
23 const char *name;
Lai Jiangshanc252f652009-12-01 16:23:47 +080024 int syscall_nr;
Frederic Weisbecker47788c52009-04-08 20:40:59 +020025 int nb_args;
26 const char **types;
27 const char **args;
Li Zefan540b7b82009-08-19 15:54:51 +080028
29 struct ftrace_event_call *enter_event;
30 struct ftrace_event_call *exit_event;
Frederic Weisbecker47788c52009-04-08 20:40:59 +020031};
32
33#ifdef CONFIG_FTRACE_SYSCALLS
Frederic Weisbeckerc44fc772009-09-19 06:50:42 +020034extern unsigned long arch_syscall_addr(int nr);
Lai Jiangshana1301da2009-12-01 16:23:55 +080035extern int init_syscall_trace(struct ftrace_event_call *call);
Masami Hiramatsubd1a5c82009-08-13 16:34:53 -040036
Li Zefan540b7b82009-08-19 15:54:51 +080037extern int syscall_enter_define_fields(struct ftrace_event_call *call);
38extern int syscall_exit_define_fields(struct ftrace_event_call *call);
Masami Hiramatsubd1a5c82009-08-13 16:34:53 -040039extern int reg_event_syscall_enter(struct ftrace_event_call *call);
40extern void unreg_event_syscall_enter(struct ftrace_event_call *call);
41extern int reg_event_syscall_exit(struct ftrace_event_call *call);
42extern void unreg_event_syscall_exit(struct ftrace_event_call *call);
43extern int
44ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s);
Jason Baron64c12e02009-08-10 16:52:53 -040045enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags);
46enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags);
Frederic Weisbecker47788c52009-04-08 20:40:59 +020047#endif
Li Zefan07b139c2009-12-21 14:27:35 +080048
49#ifdef CONFIG_PERF_EVENTS
Frederic Weisbecker97d5a222010-03-05 05:35:37 +010050int perf_sysenter_enable(struct ftrace_event_call *call);
51void perf_sysenter_disable(struct ftrace_event_call *call);
52int perf_sysexit_enable(struct ftrace_event_call *call);
53void perf_sysexit_disable(struct ftrace_event_call *call);
Jason Baronf4b5ffc2009-08-10 16:53:02 -040054#endif
Frederic Weisbecker47788c52009-04-08 20:40:59 +020055
56#endif /* _TRACE_SYSCALL_H */