| 1 | #ifndef _TRACE_SYSCALL_H
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| 2 | #define _TRACE_SYSCALL_H
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| 3 |
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| 4 | #include <linux/tracepoint.h>
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| 5 | #include <linux/unistd.h>
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| 6 | #include <linux/ftrace_event.h>
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| 7 |
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| 8 | #include <asm/ptrace.h>
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| 9 |
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| 10 |
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| 11 | |
| 12 | * A syscall entry in the ftrace syscalls array.
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| 13 | *
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| 14 | * @name: name of the syscall
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| 15 | * @syscall_nr: number of the syscall
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| 16 | * @nb_args: number of parameters it takes
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| 17 | * @types: list of types as strings
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| 18 | * @args: list of args as strings (args[i] matches types[i])
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| 19 | * @enter_event: associated syscall_enter trace event
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| 20 | * @exit_event: associated syscall_exit trace event
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| 21 |
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| 22 | struct syscall_metadata {
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| 23 | const char *name;
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| 24 | int syscall_nr;
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| 25 | int nb_args;
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| 26 | const char **types;
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| 27 | const char **args;
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| 28 | struct list_head enter_fields;
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| 29 |
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| 30 | struct ftrace_event_call *enter_event;
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| 31 | struct ftrace_event_call *exit_event;
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| 32 | };
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| 33 |
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| 34 | #ifdef CONFIG_FTRACE_SYSCALLS
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| 35 | extern unsigned long arch_syscall_addr(int nr);
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| 36 | extern int init_syscall_trace(struct ftrace_event_call *call);
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| 37 |
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| 38 | extern int reg_event_syscall_enter(struct ftrace_event_call *call);
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| 39 | extern void unreg_event_syscall_enter(struct ftrace_event_call *call);
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| 40 | extern int reg_event_syscall_exit(struct ftrace_event_call *call);
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| 41 | extern void unreg_event_syscall_exit(struct ftrace_event_call *call);
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| 42 | extern int
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| 43 | ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s);
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| 44 | enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags,
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| 45 | struct trace_event *event);
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| 46 | enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags,
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| 47 | struct trace_event *event);
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| 48 | #endif
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| 49 |
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| 50 | #ifdef CONFIG_PERF_EVENTS
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| 51 | int perf_sysenter_enable(struct ftrace_event_call *call);
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| 52 | void perf_sysenter_disable(struct ftrace_event_call *call);
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| 53 | int perf_sysexit_enable(struct ftrace_event_call *call);
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| 54 | void perf_sysexit_disable(struct ftrace_event_call *call);
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| 55 | #endif
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| 56 |
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| 57 | #endif
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